diff --git a/prebuilts/gradle/ActionBarCompat-Basic/ActionBarCompat-BasicSample/build.gradle b/prebuilts/gradle/ActionBarCompat-Basic/ActionBarCompat-BasicSample/build.gradle
index eadcacf..21cf70b 100644
--- a/prebuilts/gradle/ActionBarCompat-Basic/ActionBarCompat-BasicSample/build.gradle
+++ b/prebuilts/gradle/ActionBarCompat-Basic/ActionBarCompat-BasicSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,8 +15,8 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 7
-    compile "com.android.support:support-v4:18.0.+"
-    compile "com.android.support:gridlayout-v7:18.0.+"
+    compile "com.android.support:support-v4:19.0.+"
+    compile "com.android.support:gridlayout-v7:19.0.+"
     compile "com.android.support:appcompat-v7:18.0.+"
 }
 
@@ -30,7 +30,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/ActionBarCompat-ListPopupMenu/ActionBarCompat-ListPopupMenuSample/build.gradle b/prebuilts/gradle/ActionBarCompat-ListPopupMenu/ActionBarCompat-ListPopupMenuSample/build.gradle
index c7803e6..35302c0 100644
--- a/prebuilts/gradle/ActionBarCompat-ListPopupMenu/ActionBarCompat-ListPopupMenuSample/build.gradle
+++ b/prebuilts/gradle/ActionBarCompat-ListPopupMenu/ActionBarCompat-ListPopupMenuSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,8 +15,8 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 7
-    compile "com.android.support:support-v4:18.0.+"
-    compile "com.android.support:gridlayout-v7:18.0.+"
+    compile "com.android.support:support-v4:19.0.+"
+    compile "com.android.support:gridlayout-v7:19.0.+"
     compile "com.android.support:appcompat-v7:+"
 }
 
@@ -30,7 +30,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/ActionBarCompat-ShareActionProvider/ActionBarCompat-ShareActionProviderSample/build.gradle b/prebuilts/gradle/ActionBarCompat-ShareActionProvider/ActionBarCompat-ShareActionProviderSample/build.gradle
index eadcacf..21cf70b 100644
--- a/prebuilts/gradle/ActionBarCompat-ShareActionProvider/ActionBarCompat-ShareActionProviderSample/build.gradle
+++ b/prebuilts/gradle/ActionBarCompat-ShareActionProvider/ActionBarCompat-ShareActionProviderSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,8 +15,8 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 7
-    compile "com.android.support:support-v4:18.0.+"
-    compile "com.android.support:gridlayout-v7:18.0.+"
+    compile "com.android.support:support-v4:19.0.+"
+    compile "com.android.support:gridlayout-v7:19.0.+"
     compile "com.android.support:appcompat-v7:18.0.+"
 }
 
@@ -30,7 +30,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/ActionBarCompat-Styled/ActionBarCompat-StyledSample/build.gradle b/prebuilts/gradle/ActionBarCompat-Styled/ActionBarCompat-StyledSample/build.gradle
index eadcacf..21cf70b 100644
--- a/prebuilts/gradle/ActionBarCompat-Styled/ActionBarCompat-StyledSample/build.gradle
+++ b/prebuilts/gradle/ActionBarCompat-Styled/ActionBarCompat-StyledSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,8 +15,8 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 7
-    compile "com.android.support:support-v4:18.0.+"
-    compile "com.android.support:gridlayout-v7:18.0.+"
+    compile "com.android.support:support-v4:19.0.+"
+    compile "com.android.support:gridlayout-v7:19.0.+"
     compile "com.android.support:appcompat-v7:18.0.+"
 }
 
@@ -30,7 +30,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/ActivityInstrumentation/ActivityInstrumentationSample/build.gradle b/prebuilts/gradle/ActivityInstrumentation/ActivityInstrumentationSample/build.gradle
index 7870f12..5681239 100644
--- a/prebuilts/gradle/ActivityInstrumentation/ActivityInstrumentationSample/build.gradle
+++ b/prebuilts/gradle/ActivityInstrumentation/ActivityInstrumentationSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,7 +15,7 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 4
-    compile "com.android.support:support-v4:18.0.+"
+    compile "com.android.support:support-v4:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -28,7 +28,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/AdvancedImmersiveMode/AdvancedImmersiveModeSample/build.gradle b/prebuilts/gradle/AdvancedImmersiveMode/AdvancedImmersiveModeSample/build.gradle
index 7870f12..5681239 100644
--- a/prebuilts/gradle/AdvancedImmersiveMode/AdvancedImmersiveModeSample/build.gradle
+++ b/prebuilts/gradle/AdvancedImmersiveMode/AdvancedImmersiveModeSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,7 +15,7 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 4
-    compile "com.android.support:support-v4:18.0.+"
+    compile "com.android.support:support-v4:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -28,7 +28,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/AdvancedImmersiveMode/AdvancedImmersiveModeSample/src/main/res/layout-w720dp/activity_main.xml b/prebuilts/gradle/AdvancedImmersiveMode/AdvancedImmersiveModeSample/src/main/res/layout-w720dp/activity_main.xml
new file mode 100755
index 0000000..c9a52f6
--- /dev/null
+++ b/prebuilts/gradle/AdvancedImmersiveMode/AdvancedImmersiveModeSample/src/main/res/layout-w720dp/activity_main.xml
@@ -0,0 +1,73 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+<LinearLayout
+      xmlns:android="http://schemas.android.com/apk/res/android"
+      android:orientation="horizontal"
+      android:layout_width="match_parent"
+      android:layout_height="match_parent"
+      android:id="@+id/sample_main_layout">
+
+    <LinearLayout
+          android:id="@+id/sample_output"
+          android:layout_width="0px"
+          android:layout_height="match_parent"
+          android:layout_weight="1"
+          android:orientation="vertical">
+
+        <FrameLayout
+              style="@style/Widget.SampleMessageTile"
+              android:layout_width="match_parent"
+              android:layout_height="wrap_content">
+
+            <TextView
+                  style="@style/Widget.SampleMessage"
+                  android:layout_width="match_parent"
+                  android:layout_height="wrap_content"
+                  android:paddingLeft="@dimen/margin_medium"
+                  android:paddingRight="@dimen/margin_medium"
+                  android:paddingTop="@dimen/margin_large"
+                  android:paddingBottom="@dimen/margin_large"
+                  android:text="@string/intro_message" />
+        </FrameLayout>
+
+        <View
+              android:layout_width="match_parent"
+              android:layout_height="1dp"
+              android:background="@android:color/darker_gray" />
+
+        <fragment
+              android:name="com.example.android.common.logger.LogFragment"
+              android:id="@+id/log_fragment"
+              android:layout_width="match_parent"
+              android:layout_height="0px"
+              android:layout_weight="1" />
+
+    </LinearLayout>
+
+    <View
+          android:layout_width="1dp"
+          android:layout_height="match_parent"
+          android:background="@android:color/darker_gray" />
+
+    <FrameLayout
+          android:id="@+id/sample_content_fragment"
+          android:layout_weight="2"
+          android:layout_width="0px"
+          android:layout_height="match_parent" />
+
+</LinearLayout>
+
+
diff --git a/prebuilts/gradle/AdvancedImmersiveMode/AdvancedImmersiveModeSample/src/main/res/layout/fragment_flags.xml b/prebuilts/gradle/AdvancedImmersiveMode/AdvancedImmersiveModeSample/src/main/res/layout/fragment_flags.xml
new file mode 100644
index 0000000..2c74e83
--- /dev/null
+++ b/prebuilts/gradle/AdvancedImmersiveMode/AdvancedImmersiveModeSample/src/main/res/layout/fragment_flags.xml
@@ -0,0 +1,69 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical" android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <CheckBox
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:id="@+id/flag_enable_lowprof"
+        android:text="Enable Low Profile Mode" />
+
+    <CheckBox
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:id="@+id/flag_hide_navbar"
+        android:text="Hide Navigation bar" />
+
+    <CheckBox
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:id="@+id/flag_hide_statbar"
+        android:text="Hide Status Bar" />
+
+    <CheckBox
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:id="@+id/flag_enable_immersive"
+        android:text="Enable Immersive Mode" />
+
+    <CheckBox
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:id="@+id/flag_enable_immersive_sticky"
+        android:text="Enable Immersive Mode (Sticky)" />
+
+    <Button
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Do things!"
+        android:id="@+id/btn_changeFlags" />
+
+
+    <TextView
+        android:layout_marginTop="@dimen/margin_large"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Common flag presets"/>
+    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+        android:orientation="horizontal" android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <Button
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Immersive Mode"
+            android:id="@+id/btn_immersive" />
+
+        <Button
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Leanback Mode"
+            android:id="@+id/btn_leanback" />
+
+    </LinearLayout>
+
+
+
+</LinearLayout>
\ No newline at end of file
diff --git a/prebuilts/gradle/AdvancedImmersiveMode/AdvancedImmersiveModeSample/src/main/res/values/strings.xml b/prebuilts/gradle/AdvancedImmersiveMode/AdvancedImmersiveModeSample/src/main/res/values/strings.xml
old mode 100644
new mode 100755
diff --git a/prebuilts/gradle/AppRestrictions/AppRestrictionsSample/build.gradle b/prebuilts/gradle/AppRestrictions/AppRestrictionsSample/build.gradle
index b3b385a..7bfc9ad 100644
--- a/prebuilts/gradle/AppRestrictions/AppRestrictionsSample/build.gradle
+++ b/prebuilts/gradle/AppRestrictions/AppRestrictionsSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,7 +15,7 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 18
-    compile "com.android.support:support-v13:18.0.+"
+    compile "com.android.support:support-v13:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -28,7 +28,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/BasicAccessibility/BasicAccessibilitySample/build.gradle b/prebuilts/gradle/BasicAccessibility/BasicAccessibilitySample/build.gradle
index 450bf36..6bbb9ea 100644
--- a/prebuilts/gradle/BasicAccessibility/BasicAccessibilitySample/build.gradle
+++ b/prebuilts/gradle/BasicAccessibility/BasicAccessibilitySample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,8 +15,8 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 11
-    compile "com.android.support:support-v4:18.0.+"
-    compile "com.android.support:gridlayout-v7:18.0.+"
+    compile "com.android.support:support-v4:19.0.+"
+    compile "com.android.support:gridlayout-v7:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -29,7 +29,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/BasicAndroidKeyStore/BasicAndroidKeyStoreSample/build.gradle b/prebuilts/gradle/BasicAndroidKeyStore/BasicAndroidKeyStoreSample/build.gradle
index b3b385a..7bfc9ad 100644
--- a/prebuilts/gradle/BasicAndroidKeyStore/BasicAndroidKeyStoreSample/build.gradle
+++ b/prebuilts/gradle/BasicAndroidKeyStore/BasicAndroidKeyStoreSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,7 +15,7 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 18
-    compile "com.android.support:support-v13:18.0.+"
+    compile "com.android.support:support-v13:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -28,7 +28,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/BasicAndroidKeyStore/BasicAndroidKeyStoreSample/src/main/java/com/example/android/basicandroidkeystore/MainActivity.java b/prebuilts/gradle/BasicAndroidKeyStore/BasicAndroidKeyStoreSample/src/main/java/com/example/android/basicandroidkeystore/MainActivity.java
index 9f16565..7711f35 100644
--- a/prebuilts/gradle/BasicAndroidKeyStore/BasicAndroidKeyStoreSample/src/main/java/com/example/android/basicandroidkeystore/MainActivity.java
+++ b/prebuilts/gradle/BasicAndroidKeyStore/BasicAndroidKeyStoreSample/src/main/java/com/example/android/basicandroidkeystore/MainActivity.java
@@ -19,6 +19,7 @@
 
 package com.example.android.basicandroidkeystore;
 
+import android.graphics.Color;
 import android.os.Bundle;
 import android.support.v4.app.FragmentTransaction;
 import android.view.Menu;
@@ -72,6 +73,8 @@
         LogFragment logFragment = (LogFragment) getSupportFragmentManager()
                 .findFragmentById(R.id.log_fragment);
         msgFilter.setNext(logFragment.getLogView());
+        logFragment.getLogView().setTextAppearance(this, R.style.Log);
+        logFragment.getLogView().setBackgroundColor(Color.WHITE);
 
         Log.i(TAG, "Ready");
     }
diff --git a/prebuilts/gradle/BasicAndroidKeyStore/BasicAndroidKeyStoreSample/src/main/res/layout-sw600dp-land/activity_main.xml b/prebuilts/gradle/BasicAndroidKeyStore/BasicAndroidKeyStoreSample/src/main/res/layout-sw600dp-land/activity_main.xml
new file mode 100644
index 0000000..653454b
--- /dev/null
+++ b/prebuilts/gradle/BasicAndroidKeyStore/BasicAndroidKeyStoreSample/src/main/res/layout-sw600dp-land/activity_main.xml
@@ -0,0 +1,37 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+<LinearLayout
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        android:orientation="horizontal"
+        android:layout_width="fill_parent"
+        android:layout_height="fill_parent"
+        android:id="@+id/sample_main_layout">
+    <TextView android:id="@+id/sample_output"
+              style="@style/Widget.SampleMessage"
+              android:background="@android:color/white"
+              android:layout_weight="1"
+              android:layout_width="match_parent"
+              android:layout_height="match_parent"
+              android:text="@string/intro_message"
+              android:layout_margin="16dp" />
+    <fragment
+            android:name="com.example.android.common.logger.LogFragment"
+            android:id="@+id/log_fragment"
+            android:layout_weight="1"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_margin="16dp" />
+</LinearLayout>
diff --git a/prebuilts/gradle/BasicAndroidKeyStore/BasicAndroidKeyStoreSample/src/main/res/layout-sw600dp/activity_main.xml b/prebuilts/gradle/BasicAndroidKeyStore/BasicAndroidKeyStoreSample/src/main/res/layout-sw600dp/activity_main.xml
new file mode 100644
index 0000000..11cd71b
--- /dev/null
+++ b/prebuilts/gradle/BasicAndroidKeyStore/BasicAndroidKeyStoreSample/src/main/res/layout-sw600dp/activity_main.xml
@@ -0,0 +1,36 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+<LinearLayout
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        android:orientation="vertical"
+        android:layout_width="fill_parent"
+        android:layout_height="fill_parent"
+        android:id="@+id/sample_main_layout">
+    <TextView android:id="@+id/sample_output"
+              style="@style/Widget.SampleMessage"
+              android:background="@android:color/white"
+              android:layout_width="match_parent"
+              android:layout_height="wrap_content"
+              android:text="@string/intro_message"
+              android:padding="16dp"
+              android:layout_margin="16dp"/>
+    <fragment
+            android:name="com.example.android.common.logger.LogFragment"
+            android:id="@+id/log_fragment"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_margin="16dp" />
+</LinearLayout>
diff --git a/prebuilts/gradle/BasicAndroidKeyStore/BasicAndroidKeyStoreSample/src/main/res/layout/activity_main.xml b/prebuilts/gradle/BasicAndroidKeyStore/BasicAndroidKeyStoreSample/src/main/res/layout/activity_main.xml
index bc5a575..6f41369 100644
--- a/prebuilts/gradle/BasicAndroidKeyStore/BasicAndroidKeyStoreSample/src/main/res/layout/activity_main.xml
+++ b/prebuilts/gradle/BasicAndroidKeyStore/BasicAndroidKeyStoreSample/src/main/res/layout/activity_main.xml
@@ -24,7 +24,8 @@
               android:layout_weight="1"
               android:layout_width="match_parent"
               android:layout_height="match_parent"
-              android:text="@string/intro_message" />
+              android:text="@string/intro_message"
+              android:padding="16dp" />
     <View
             android:layout_width="fill_parent"
             android:layout_height="1dp"
diff --git a/prebuilts/gradle/BasicAndroidKeyStore/BasicAndroidKeyStoreSample/src/main/res/values/template-styles.xml b/prebuilts/gradle/BasicAndroidKeyStore/BasicAndroidKeyStoreSample/src/main/res/values/template-styles.xml
index d3f82ff..cfffcbd 100644
--- a/prebuilts/gradle/BasicAndroidKeyStore/BasicAndroidKeyStoreSample/src/main/res/values/template-styles.xml
+++ b/prebuilts/gradle/BasicAndroidKeyStore/BasicAndroidKeyStoreSample/src/main/res/values/template-styles.xml
@@ -26,8 +26,11 @@
     <style name="Widget" />
 
     <style name="Widget.SampleMessage">
+        <item name="android:padding">@dimen/margin_medium</item>
         <item name="android:textAppearance">?android:textAppearanceMedium</item>
         <item name="android:lineSpacingMultiplier">1.1</item>
+        <item name="android:layout_margin">16dp</item>
+        <item name="android:shadowDy">-6.5</item>
     </style>
 
     <style name="Widget.SampleMessageTile">
diff --git a/prebuilts/gradle/BasicContactables/BasicContactablesSample/build.gradle b/prebuilts/gradle/BasicContactables/BasicContactablesSample/build.gradle
index b3b385a..7bfc9ad 100644
--- a/prebuilts/gradle/BasicContactables/BasicContactablesSample/build.gradle
+++ b/prebuilts/gradle/BasicContactables/BasicContactablesSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,7 +15,7 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 18
-    compile "com.android.support:support-v13:18.0.+"
+    compile "com.android.support:support-v13:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -28,7 +28,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/BasicGestureDetect/BasicGestureDetectSample/build.gradle b/prebuilts/gradle/BasicGestureDetect/BasicGestureDetectSample/build.gradle
index b3b385a..7bfc9ad 100644
--- a/prebuilts/gradle/BasicGestureDetect/BasicGestureDetectSample/build.gradle
+++ b/prebuilts/gradle/BasicGestureDetect/BasicGestureDetectSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,7 +15,7 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 18
-    compile "com.android.support:support-v13:18.0.+"
+    compile "com.android.support:support-v13:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -28,7 +28,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/BasicImmersiveMode/BasicImmersiveModeSample/build.gradle b/prebuilts/gradle/BasicImmersiveMode/BasicImmersiveModeSample/build.gradle
index fd83e0b..f73b206 100644
--- a/prebuilts/gradle/BasicImmersiveMode/BasicImmersiveModeSample/build.gradle
+++ b/prebuilts/gradle/BasicImmersiveMode/BasicImmersiveModeSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,7 +15,7 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 19
-    compile "com.android.support:support-v13:18.0.+"
+    compile "com.android.support:support-v13:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -28,7 +28,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/BasicMediaDecoder/BasicMediaDecoderSample/build.gradle b/prebuilts/gradle/BasicMediaDecoder/BasicMediaDecoderSample/build.gradle
index 689fabb..2a7b163 100644
--- a/prebuilts/gradle/BasicMediaDecoder/BasicMediaDecoderSample/build.gradle
+++ b/prebuilts/gradle/BasicMediaDecoder/BasicMediaDecoderSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,7 +15,7 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 17
-    compile "com.android.support:support-v13:18.0.+"
+    compile "com.android.support:support-v13:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -28,7 +28,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/BasicMediaRouter/BasicMediaRouterSample/build.gradle b/prebuilts/gradle/BasicMediaRouter/BasicMediaRouterSample/build.gradle
index 689fabb..2a7b163 100644
--- a/prebuilts/gradle/BasicMediaRouter/BasicMediaRouterSample/build.gradle
+++ b/prebuilts/gradle/BasicMediaRouter/BasicMediaRouterSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,7 +15,7 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 17
-    compile "com.android.support:support-v13:18.0.+"
+    compile "com.android.support:support-v13:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -28,7 +28,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/BasicMultitouch/BasicMultitouchSample/build.gradle b/prebuilts/gradle/BasicMultitouch/BasicMultitouchSample/build.gradle
index dd1bd91..e88b9ff 100644
--- a/prebuilts/gradle/BasicMultitouch/BasicMultitouchSample/build.gradle
+++ b/prebuilts/gradle/BasicMultitouch/BasicMultitouchSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,8 +15,8 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 8
-    compile "com.android.support:support-v4:18.0.+"
-    compile "com.android.support:gridlayout-v7:18.0.+"
+    compile "com.android.support:support-v4:19.0.+"
+    compile "com.android.support:gridlayout-v7:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -29,7 +29,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/BasicNetworking/BasicNetworkingSample/build.gradle b/prebuilts/gradle/BasicNetworking/BasicNetworkingSample/build.gradle
index 7870f12..5681239 100644
--- a/prebuilts/gradle/BasicNetworking/BasicNetworkingSample/build.gradle
+++ b/prebuilts/gradle/BasicNetworking/BasicNetworkingSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,7 +15,7 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 4
-    compile "com.android.support:support-v4:18.0.+"
+    compile "com.android.support:support-v4:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -28,7 +28,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/BasicNotifications/BasicNotificationsSample/build.gradle b/prebuilts/gradle/BasicNotifications/BasicNotificationsSample/build.gradle
index dd1bd91..e88b9ff 100644
--- a/prebuilts/gradle/BasicNotifications/BasicNotificationsSample/build.gradle
+++ b/prebuilts/gradle/BasicNotifications/BasicNotificationsSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,8 +15,8 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 8
-    compile "com.android.support:support-v4:18.0.+"
-    compile "com.android.support:gridlayout-v7:18.0.+"
+    compile "com.android.support:support-v4:19.0.+"
+    compile "com.android.support:gridlayout-v7:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -29,7 +29,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/AndroidManifest.xml b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/AndroidManifest.xml
new file mode 100644
index 0000000..1e35dc3
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/AndroidManifest.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.android.basicrenderscript"
+    android:versionCode="1"
+    android:versionName="1.0" >
+
+    <uses-sdk
+        android:minSdkVersion="8"
+        android:targetSdkVersion="19" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@drawable/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@style/AppTheme" >
+        <activity
+            android:name="com.example.android.basicrenderscript.MainActivity"
+            android:configChanges="orientation|keyboardHidden|screenSize"
+            android:label="@string/app_name"
+            android:theme="@style/FullscreenTheme" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/build.gradle b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/build.gradle
new file mode 100644
index 0000000..0f68091
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/build.gradle
@@ -0,0 +1,67 @@
+
+
+
+buildscript {
+    repositories {
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:0.8.+'
+    }
+}
+
+apply plugin: 'android'
+
+dependencies {
+    // Add the support lib that is appropriate for SDK 8
+    compile "com.android.support:support-v4:19.0.+"
+    compile "com.android.support:gridlayout-v7:19.0.+"
+    compile files('renderscript-v8.jar')
+}
+
+// The sample build uses multiple directories to
+// keep boilerplate and common code separate from
+// the main sample code.
+List<String> dirs = [
+    'main',     // main sample code; look here for the interesting stuff.
+    'common',   // components that are reused by multiple samples
+    'template'] // boilerplate code that is generated by the sample template process
+
+android {
+    compileSdkVersion 19
+    buildToolsVersion "19.0.1"
+
+    sourceSets {
+        main {
+            dirs.each { dir ->
+                java.srcDirs "src/${dir}/java"
+                res.srcDirs "src/${dir}/res"
+            }
+        }
+        instrumentTest.setRoot('tests')
+        instrumentTest.java.srcDirs = ['tests/src']
+
+        defaultConfig {
+        
+            renderscriptTargetApi 18
+            renderscriptSupportMode true
+    
+        }
+    }
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/project.properties b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/project.properties
new file mode 100644
index 0000000..aa550f1
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/project.properties
@@ -0,0 +1,15 @@
+# This file is automatically generated by Android Tools.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+#
+# This file must be checked in Version Control Systems.
+#
+# To customize properties used by the Ant build system edit
+# "ant.properties", and override values to adapt the script to your
+# project structure.
+#
+# To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
+#proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
+
+# Project target.
+target=android-19
+renderscript.support.mode=true
\ No newline at end of file
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/AndroidManifest.xml b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..e1e2dfc
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/AndroidManifest.xml
@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="UTF-8"?><!--
+ Copyright 2014 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.android.basicrenderscript"
+    android:versionCode="1"
+    android:versionName="1.0">
+
+    <uses-sdk
+        android:minSdkVersion="8"
+        android:targetSdkVersion="19" />
+
+    <application
+        android:allowBackup="true"
+        android:label="@string/app_name"
+        android:icon="@drawable/ic_launcher"
+        android:theme="@style/AppTheme">
+
+        <activity
+            android:name=".MainActivity"
+            android:label="@string/app_name"
+            android:theme="@style/FullscreenTheme">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+
+</manifest>
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/java/com/example/android/basicrenderscript/MainActivity.java b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/java/com/example/android/basicrenderscript/MainActivity.java
new file mode 100644
index 0000000..ed6d5ad
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/java/com/example/android/basicrenderscript/MainActivity.java
@@ -0,0 +1,190 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.basicrenderscript;
+
+import android.app.Activity;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.widget.ImageView;
+import android.widget.SeekBar;
+import android.widget.SeekBar.OnSeekBarChangeListener;
+import android.support.v8.renderscript.*;
+
+public class MainActivity extends Activity {
+    /* Number of bitmaps that is used for renderScript thread and UI thread synchronization.
+       Ideally, this can be reduced to 2, however in some devices, 2 buffers still showing tierings on UI.
+       Investigating a root cause.
+     */
+    private final int NUM_BITMAPS = 3;
+    private int mCurrentBitmap = 0;
+    private Bitmap mBitmapIn;
+    private Bitmap[] mBitmapsOut;
+    private ImageView mImageView;
+
+    private RenderScript mRS;
+    private Allocation mInAllocation;
+    private Allocation[] mOutAllocations;
+    private ScriptC_saturation mScript;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.main_layout);
+
+        /*
+         * Initialize UI
+         */
+        mBitmapIn = loadBitmap(R.drawable.data);
+        mBitmapsOut = new Bitmap[NUM_BITMAPS];
+        for (int i = 0; i < NUM_BITMAPS; ++i) {
+            mBitmapsOut[i] = Bitmap.createBitmap(mBitmapIn.getWidth(),
+                    mBitmapIn.getHeight(), mBitmapIn.getConfig());
+        }
+
+        mImageView = (ImageView) findViewById(R.id.imageView);
+        mImageView.setImageBitmap(mBitmapsOut[mCurrentBitmap]);
+        mCurrentBitmap += (mCurrentBitmap + 1) % NUM_BITMAPS;
+
+        SeekBar seekbar = (SeekBar) findViewById(R.id.seekBar1);
+        seekbar.setProgress(50);
+        seekbar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
+            public void onProgressChanged(SeekBar seekBar, int progress,
+                                          boolean fromUser) {
+                float max = 2.0f;
+                float min = 0.0f;
+                float f = (float) ((max - min) * (progress / 100.0) + min);
+                updateImage(f);
+            }
+
+            @Override
+            public void onStartTrackingTouch(SeekBar seekBar) {
+            }
+
+            @Override
+            public void onStopTrackingTouch(SeekBar seekBar) {
+            }
+        });
+
+        /*
+         * Create renderScript
+         */
+        createScript();
+
+        /*
+         * Invoke renderScript kernel and update imageView
+         */
+        updateImage(1.0f);
+    }
+
+    /*
+     * Initialize RenderScript
+     * In the sample, it creates RenderScript kernel that performs saturation manipulation.
+     */
+    private void createScript() {
+        //Initialize RS
+        mRS = RenderScript.create(this);
+
+        //Allocate buffers
+        mInAllocation = Allocation.createFromBitmap(mRS, mBitmapIn);
+        mOutAllocations = new Allocation[NUM_BITMAPS];
+        for (int i = 0; i < NUM_BITMAPS; ++i) {
+            mOutAllocations[i] = Allocation.createFromBitmap(mRS, mBitmapsOut[i]);
+        }
+
+        //Load script
+        mScript = new ScriptC_saturation(mRS);
+    }
+
+    /*
+     * In the AsyncTask, it invokes RenderScript intrinsics to do a filtering.
+     * After the filtering is done, an operation blocks at Allication.copyTo() in AsyncTask thread.
+     * Once all operation is finished at onPostExecute() in UI thread, it can invalidate and update ImageView UI.
+     */
+    private class RenderScriptTask extends AsyncTask<Float, Integer, Integer> {
+        Boolean issued = false;
+
+        protected Integer doInBackground(Float... values) {
+            int index = -1;
+            if (isCancelled() == false) {
+                issued = true;
+                index = mCurrentBitmap;
+
+                /*
+                 * Set global variable in RS
+                 */
+                mScript.set_saturationValue(values[0]);
+
+                /*
+                 * Invoke saturation filter kernel
+                 */
+                mScript.forEach_saturation(mInAllocation, mOutAllocations[index]);
+
+                /*
+                 * Copy to bitmap and invalidate image view
+                 */
+                mOutAllocations[index].copyTo(mBitmapsOut[index]);
+                mCurrentBitmap = (mCurrentBitmap + 1) % NUM_BITMAPS;
+            }
+            return index;
+        }
+
+        void updateView(Integer result) {
+            if (result != -1) {
+                // Request UI update
+                mImageView.setImageBitmap(mBitmapsOut[result]);
+                mImageView.invalidate();
+            }
+        }
+
+        protected void onPostExecute(Integer result) {
+            updateView(result);
+        }
+
+        protected void onCancelled(Integer result) {
+            if (issued) {
+                updateView(result);
+            }
+        }
+    }
+
+    RenderScriptTask currentTask = null;
+
+    /*
+    Invoke AsynchTask and cancel previous task.
+    When AsyncTasks are piled up (typically in slow device with heavy kernel),
+    Only the latest (and already started) task invokes RenderScript operation.
+     */
+    private void updateImage(final float f) {
+        if (currentTask != null)
+            currentTask.cancel(false);
+        currentTask = new RenderScriptTask();
+        currentTask.execute(f);
+    }
+
+    /*
+    Helper to load Bitmap from resource
+     */
+    private Bitmap loadBitmap(int resource) {
+        final BitmapFactory.Options options = new BitmapFactory.Options();
+        options.inPreferredConfig = Bitmap.Config.ARGB_8888;
+        return BitmapFactory.decodeResource(getResources(), resource, options);
+    }
+
+}
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/java/com/example/android/common/media/CameraHelper.java b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/java/com/example/android/common/media/CameraHelper.java
new file mode 100644
index 0000000..1fa8416
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/java/com/example/android/common/media/CameraHelper.java
@@ -0,0 +1,182 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.common.media;
+
+import android.annotation.TargetApi;
+import android.hardware.Camera;
+import android.os.Build;
+import android.os.Environment;
+import android.util.Log;
+
+import java.io.File;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.List;
+
+/**
+ * Camera related utilities.
+ */
+public class CameraHelper {
+
+    public static final int MEDIA_TYPE_IMAGE = 1;
+    public static final int MEDIA_TYPE_VIDEO = 2;
+
+    /**
+     * Iterate over supported camera preview sizes to see which one best fits the
+     * dimensions of the given view while maintaining the aspect ratio. If none can,
+     * be lenient with the aspect ratio.
+     *
+     * @param sizes Supported camera preview sizes.
+     * @param w The width of the view.
+     * @param h The height of the view.
+     * @return Best match camera preview size to fit in the view.
+     */
+    public static  Camera.Size getOptimalPreviewSize(List<Camera.Size> sizes, int w, int h) {
+        // Use a very small tolerance because we want an exact match.
+        final double ASPECT_TOLERANCE = 0.1;
+        double targetRatio = (double) w / h;
+        if (sizes == null)
+            return null;
+
+        Camera.Size optimalSize = null;
+
+        // Start with max value and refine as we iterate over available preview sizes. This is the
+        // minimum difference between view and camera height.
+        double minDiff = Double.MAX_VALUE;
+
+        // Target view height
+        int targetHeight = h;
+
+        // Try to find a preview size that matches aspect ratio and the target view size.
+        // Iterate over all available sizes and pick the largest size that can fit in the view and
+        // still maintain the aspect ratio.
+        for (Camera.Size size : sizes) {
+            double ratio = (double) size.width / size.height;
+            if (Math.abs(ratio - targetRatio) > ASPECT_TOLERANCE)
+                continue;
+            if (Math.abs(size.height - targetHeight) < minDiff) {
+                optimalSize = size;
+                minDiff = Math.abs(size.height - targetHeight);
+            }
+        }
+
+        // Cannot find preview size that matches the aspect ratio, ignore the requirement
+        if (optimalSize == null) {
+            minDiff = Double.MAX_VALUE;
+            for (Camera.Size size : sizes) {
+                if (Math.abs(size.height - targetHeight) < minDiff) {
+                    optimalSize = size;
+                    minDiff = Math.abs(size.height - targetHeight);
+                }
+            }
+        }
+        return optimalSize;
+    }
+
+    /**
+     * @return the default camera on the device. Return null if there is no camera on the device.
+     */
+    public static Camera getDefaultCameraInstance() {
+        return Camera.open();
+    }
+
+
+    /**
+     * @return the default rear/back facing camera on the device. Returns null if camera is not
+     * available.
+     */
+    public static Camera getDefaultBackFacingCameraInstance() {
+        return getDefaultCamera(Camera.CameraInfo.CAMERA_FACING_BACK);
+    }
+
+    /**
+     * @return the default front facing camera on the device. Returns null if camera is not
+     * available.
+     */
+    public static Camera getDefaultFrontFacingCameraInstance() {
+        return getDefaultCamera(Camera.CameraInfo.CAMERA_FACING_FRONT);
+    }
+
+
+    /**
+     *
+     * @param position Physical position of the camera i.e Camera.CameraInfo.CAMERA_FACING_FRONT
+     *                 or Camera.CameraInfo.CAMERA_FACING_BACK.
+     * @return the default camera on the device. Returns null if camera is not available.
+     */
+    @TargetApi(Build.VERSION_CODES.GINGERBREAD)
+    private static Camera getDefaultCamera(int position) {
+        // Find the total number of cameras available
+        int  mNumberOfCameras = Camera.getNumberOfCameras();
+
+        // Find the ID of the back-facing ("default") camera
+        Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
+        for (int i = 0; i < mNumberOfCameras; i++) {
+            Camera.getCameraInfo(i, cameraInfo);
+            if (cameraInfo.facing == position) {
+                return Camera.open(i);
+
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * Creates a media file in the {@code Environment.DIRECTORY_PICTURES} directory. The directory
+     * is persistent and available to other applications like gallery.
+     *
+     * @param type Media type. Can be video or image.
+     * @return A file object pointing to the newly created file.
+     */
+    public  static File getOutputMediaFile(int type){
+        // To be safe, you should check that the SDCard is mounted
+        // using Environment.getExternalStorageState() before doing this.
+        if (!Environment.getExternalStorageState().equalsIgnoreCase(Environment.MEDIA_MOUNTED)) {
+            return  null;
+        }
+
+        File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
+                Environment.DIRECTORY_PICTURES), "CameraSample");
+        // This location works best if you want the created images to be shared
+        // between applications and persist after your app has been uninstalled.
+
+        // Create the storage directory if it does not exist
+        if (! mediaStorageDir.exists()){
+            if (! mediaStorageDir.mkdirs()) {
+                Log.d("CameraSample", "failed to create directory");
+                return null;
+            }
+        }
+
+        // Create a media file name
+        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
+        File mediaFile;
+        if (type == MEDIA_TYPE_IMAGE){
+            mediaFile = new File(mediaStorageDir.getPath() + File.separator +
+                    "IMG_"+ timeStamp + ".jpg");
+        } else if(type == MEDIA_TYPE_VIDEO) {
+            mediaFile = new File(mediaStorageDir.getPath() + File.separator +
+                    "VID_"+ timeStamp + ".mp4");
+        } else {
+            return null;
+        }
+
+        return mediaFile;
+    }
+
+}
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/java/com/example/android/common/media/MediaCodecWrapper.java b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/java/com/example/android/common/media/MediaCodecWrapper.java
new file mode 100644
index 0000000..a511221
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/java/com/example/android/common/media/MediaCodecWrapper.java
@@ -0,0 +1,386 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.common.media;
+
+import android.media.*;
+import android.os.Handler;
+import android.os.Looper;
+import android.view.Surface;
+
+import java.nio.ByteBuffer;
+import java.util.ArrayDeque;
+import java.util.Queue;
+
+/**
+ * Simplifies the MediaCodec interface by wrapping around the buffer processing operations.
+ */
+public class MediaCodecWrapper {
+
+    // Handler to use for {@code OutputSampleListener} and {code OutputFormatChangedListener}
+    // callbacks
+    private Handler mHandler;
+
+
+    // Callback when media output format changes.
+    public interface OutputFormatChangedListener {
+        void outputFormatChanged(MediaCodecWrapper sender, MediaFormat newFormat);
+    }
+
+    private OutputFormatChangedListener mOutputFormatChangedListener = null;
+
+    /**
+     * Callback for decodes frames. Observers can register a listener for optional stream
+     * of decoded data
+     */
+    public interface OutputSampleListener {
+        void outputSample(MediaCodecWrapper sender, MediaCodec.BufferInfo info, ByteBuffer buffer);
+    }
+
+    /**
+     * The {@link MediaCodec} that is managed by this class.
+     */
+    private MediaCodec mDecoder;
+
+    // References to the internal buffers managed by the codec. The codec
+    // refers to these buffers by index, never by reference so it's up to us
+    // to keep track of which buffer is which.
+    private ByteBuffer[] mInputBuffers;
+    private ByteBuffer[] mOutputBuffers;
+
+    // Indices of the input buffers that are currently available for writing. We'll
+    // consume these in the order they were dequeued from the codec.
+    private Queue<Integer> mAvailableInputBuffers;
+
+    // Indices of the output buffers that currently hold valid data, in the order
+    // they were produced by the codec.
+    private Queue<Integer> mAvailableOutputBuffers;
+
+    // Information about each output buffer, by index. Each entry in this array
+    // is valid if and only if its index is currently contained in mAvailableOutputBuffers.
+    private MediaCodec.BufferInfo[] mOutputBufferInfo;
+
+    // An (optional) stream that will receive decoded data.
+    private OutputSampleListener mOutputSampleListener;
+
+    private MediaCodecWrapper(MediaCodec codec) {
+        mDecoder = codec;
+        codec.start();
+        mInputBuffers = codec.getInputBuffers();
+        mOutputBuffers = codec.getOutputBuffers();
+        mOutputBufferInfo = new MediaCodec.BufferInfo[mOutputBuffers.length];
+        mAvailableInputBuffers = new ArrayDeque<Integer>(mOutputBuffers.length);
+        mAvailableOutputBuffers = new ArrayDeque<Integer>(mInputBuffers.length);
+    }
+
+    /**
+     * Releases resources and ends the encoding/decoding session.
+     */
+    public void stopAndRelease() {
+        mDecoder.stop();
+        mDecoder.release();
+        mDecoder = null;
+        mHandler = null;
+    }
+
+    /**
+     * Getter for the registered {@link OutputFormatChangedListener}
+     */
+    public OutputFormatChangedListener getOutputFormatChangedListener() {
+        return mOutputFormatChangedListener;
+    }
+
+    /**
+     *
+     * @param outputFormatChangedListener the listener for callback.
+     * @param handler message handler for posting the callback.
+     */
+    public void setOutputFormatChangedListener(final OutputFormatChangedListener
+            outputFormatChangedListener, Handler handler) {
+        mOutputFormatChangedListener = outputFormatChangedListener;
+
+        // Making sure we don't block ourselves due to a bad implementation of the callback by
+        // using a handler provided by client.
+        Looper looper;
+        mHandler = handler;
+        if (outputFormatChangedListener != null && mHandler == null) {
+            if ((looper = Looper.myLooper()) != null) {
+                mHandler = new Handler();
+            } else {
+                throw new IllegalArgumentException(
+                        "Looper doesn't exist in the calling thread");
+            }
+        }
+    }
+
+    /**
+     * Constructs the {@link MediaCodecWrapper} wrapper object around the video codec.
+     * The codec is created using the encapsulated information in the
+     * {@link MediaFormat} object.
+     *
+     * @param trackFormat The format of the media object to be decoded.
+     * @param surface Surface to render the decoded frames.
+     * @return
+     */
+    public static MediaCodecWrapper fromVideoFormat(final MediaFormat trackFormat,
+            Surface surface) {
+        MediaCodecWrapper result = null;
+        MediaCodec videoCodec = null;
+
+        // BEGIN_INCLUDE(create_codec)
+        final String mimeType = trackFormat.getString(MediaFormat.KEY_MIME);
+
+        // Check to see if this is actually a video mime type. If it is, then create
+        // a codec that can decode this mime type.
+        if (mimeType.contains("video/")) {
+            videoCodec = MediaCodec.createDecoderByType(mimeType);
+            videoCodec.configure(trackFormat, surface, null,  0);
+
+        }
+
+        // If codec creation was successful, then create a wrapper object around the
+        // newly created codec.
+        if (videoCodec != null) {
+            result = new MediaCodecWrapper(videoCodec);
+        }
+        // END_INCLUDE(create_codec)
+
+        return result;
+    }
+
+
+    /**
+     * Write a media sample to the decoder.
+     *
+     * A "sample" here refers to a single atomic access unit in the media stream. The definition
+     * of "access unit" is dependent on the type of encoding used, but it typically refers to
+     * a single frame of video or a few seconds of audio. {@link android.media.MediaExtractor}
+     * extracts data from a stream one sample at a time.
+     *
+     * @param input A ByteBuffer containing the input data for one sample. The buffer must be set
+     * up for reading, with its position set to the beginning of the sample data and its limit
+     * set to the end of the sample data.
+     *
+     * @param presentationTimeUs  The time, relative to the beginning of the media stream,
+     * at which this buffer should be rendered.
+     *
+     * @param flags Flags to pass to the decoder. See {@link MediaCodec#queueInputBuffer(int,
+     * int, int, long, int)}
+     *
+     * @throws MediaCodec.CryptoException
+     */
+    public boolean writeSample(final ByteBuffer input,
+            final MediaCodec.CryptoInfo crypto,
+            final long presentationTimeUs,
+            final int flags) throws MediaCodec.CryptoException, WriteException {
+        boolean result = false;
+        int size = input.remaining();
+
+        // check if we have dequed input buffers available from the codec
+        if (size > 0 &&  !mAvailableInputBuffers.isEmpty()) {
+            int index = mAvailableInputBuffers.remove();
+            ByteBuffer buffer = mInputBuffers[index];
+
+            // we can't write our sample to a lesser capacity input buffer.
+            if (size > buffer.capacity()) {
+                throw new MediaCodecWrapper.WriteException(String.format(
+                        "Insufficient capacity in MediaCodec buffer: "
+                            + "tried to write %d, buffer capacity is %d.",
+                        input.remaining(),
+                        buffer.capacity()));
+            }
+
+            buffer.clear();
+            buffer.put(input);
+
+            // Submit the buffer to the codec for decoding. The presentationTimeUs
+            // indicates the position (play time) for the current sample.
+            if (crypto == null) {
+                mDecoder.queueInputBuffer(index, 0, size, presentationTimeUs, flags);
+            } else {
+                mDecoder.queueSecureInputBuffer(index, 0, crypto, presentationTimeUs, flags);
+            }
+            result = true;
+        }
+        return result;
+    }
+
+    static MediaCodec.CryptoInfo cryptoInfo= new MediaCodec.CryptoInfo();
+
+    /**
+     * Write a media sample to the decoder.
+     *
+     * A "sample" here refers to a single atomic access unit in the media stream. The definition
+     * of "access unit" is dependent on the type of encoding used, but it typically refers to
+     * a single frame of video or a few seconds of audio. {@link android.media.MediaExtractor}
+     * extracts data from a stream one sample at a time.
+     *
+     * @param extractor  Instance of {@link android.media.MediaExtractor} wrapping the media.
+     *
+     * @param presentationTimeUs The time, relative to the beginning of the media stream,
+     * at which this buffer should be rendered.
+     *
+     * @param flags  Flags to pass to the decoder. See {@link MediaCodec#queueInputBuffer(int,
+     * int, int, long, int)}
+     *
+     * @throws MediaCodec.CryptoException
+     */
+    public boolean writeSample(final MediaExtractor extractor,
+            final boolean isSecure,
+            final long presentationTimeUs,
+            int flags) {
+        boolean result = false;
+        boolean isEos = false;
+
+        if (!mAvailableInputBuffers.isEmpty()) {
+            int index = mAvailableInputBuffers.remove();
+            ByteBuffer buffer = mInputBuffers[index];
+
+            // reads the sample from the file using extractor into the buffer
+            int size = extractor.readSampleData(buffer, 0);
+            if (size <= 0) {
+                flags |= MediaCodec.BUFFER_FLAG_END_OF_STREAM;
+            }
+
+            // Submit the buffer to the codec for decoding. The presentationTimeUs
+            // indicates the position (play time) for the current sample.
+            if (!isSecure) {
+                mDecoder.queueInputBuffer(index, 0, size, presentationTimeUs, flags);
+            } else {
+                extractor.getSampleCryptoInfo(cryptoInfo);
+                mDecoder.queueSecureInputBuffer(index, 0, cryptoInfo, presentationTimeUs, flags);
+            }
+
+            result = true;
+        }
+        return result;
+    }
+
+    /**
+     * Performs a peek() operation in the queue to extract media info for the buffer ready to be
+     * released i.e. the head element of the queue.
+     *
+     * @param out_bufferInfo An output var to hold the buffer info.
+     *
+     * @return True, if the peek was successful.
+     */
+    public boolean peekSample(MediaCodec.BufferInfo out_bufferInfo) {
+        // dequeue available buffers and synchronize our data structures with the codec.
+        update();
+        boolean result = false;
+        if (!mAvailableOutputBuffers.isEmpty()) {
+            int index = mAvailableOutputBuffers.peek();
+            MediaCodec.BufferInfo info = mOutputBufferInfo[index];
+            // metadata of the sample
+            out_bufferInfo.set(
+                    info.offset,
+                    info.size,
+                    info.presentationTimeUs,
+                    info.flags);
+            result = true;
+        }
+        return result;
+    }
+
+    /**
+     * Processes, releases and optionally renders the output buffer available at the head of the
+     * queue. All observers are notified with a callback. See {@link
+     * OutputSampleListener#outputSample(MediaCodecWrapper, android.media.MediaCodec.BufferInfo,
+     * java.nio.ByteBuffer)}
+     *
+     * @param render True, if the buffer is to be rendered on the {@link Surface} configured
+     *
+     */
+    public void popSample(boolean render) {
+        // dequeue available buffers and synchronize our data structures with the codec.
+        update();
+        if (!mAvailableOutputBuffers.isEmpty()) {
+            int index = mAvailableOutputBuffers.remove();
+
+            if (render && mOutputSampleListener != null) {
+                ByteBuffer buffer = mOutputBuffers[index];
+                MediaCodec.BufferInfo info = mOutputBufferInfo[index];
+                mOutputSampleListener.outputSample(this, info, buffer);
+            }
+
+            // releases the buffer back to the codec
+            mDecoder.releaseOutputBuffer(index, render);
+        }
+    }
+
+    /**
+     * Synchronize this object's state with the internal state of the wrapped
+     * MediaCodec.
+     */
+    private void update() {
+        // BEGIN_INCLUDE(update_codec_state)
+        int index;
+
+        // Get valid input buffers from the codec to fill later in the same order they were
+        // made available by the codec.
+        while ((index = mDecoder.dequeueInputBuffer(0)) != MediaCodec.INFO_TRY_AGAIN_LATER) {
+            mAvailableInputBuffers.add(index);
+        }
+
+
+        // Likewise with output buffers. If the output buffers have changed, start using the
+        // new set of output buffers. If the output format has changed, notify listeners.
+        MediaCodec.BufferInfo info = new MediaCodec.BufferInfo();
+        while ((index = mDecoder.dequeueOutputBuffer(info, 0)) !=  MediaCodec.INFO_TRY_AGAIN_LATER) {
+            switch (index) {
+                case MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED:
+                    mOutputBuffers = mDecoder.getOutputBuffers();
+                    mOutputBufferInfo = new MediaCodec.BufferInfo[mOutputBuffers.length];
+                    mAvailableOutputBuffers.clear();
+                    break;
+                case MediaCodec.INFO_OUTPUT_FORMAT_CHANGED:
+                    if (mOutputFormatChangedListener != null) {
+                        mHandler.post(new Runnable() {
+                            @Override
+                            public void run() {
+                                mOutputFormatChangedListener
+                                        .outputFormatChanged(MediaCodecWrapper.this,
+                                                mDecoder.getOutputFormat());
+
+                            }
+                        });
+                    }
+                    break;
+                default:
+                    // Making sure the index is valid before adding to output buffers. We've already
+                    // handled INFO_TRY_AGAIN_LATER, INFO_OUTPUT_FORMAT_CHANGED &
+                    // INFO_OUTPUT_BUFFERS_CHANGED i.e all the other possible return codes but
+                    // asserting index value anyways for future-proofing the code.
+                    if(index >= 0) {
+                        mOutputBufferInfo[index] = info;
+                        mAvailableOutputBuffers.add(index);
+                    } else {
+                        throw new IllegalStateException("Unknown status from dequeueOutputBuffer");
+                    }
+                    break;
+            }
+
+        }
+        // END_INCLUDE(update_codec_state)
+
+    }
+
+    private class WriteException extends Throwable {
+        private WriteException(final String detailMessage) {
+            super(detailMessage);
+        }
+    }
+}
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/drawable-hdpi/ic_launcher.png b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/drawable-hdpi/ic_launcher.png
new file mode 100755
index 0000000..75b3c97
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/drawable-hdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/drawable-hdpi/tile.9.png b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/drawable-hdpi/tile.9.png
new file mode 100644
index 0000000..1358628
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/drawable-hdpi/tile.9.png
Binary files differ
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/drawable-mdpi/ic_launcher.png b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/drawable-mdpi/ic_launcher.png
new file mode 100755
index 0000000..4ccd98e
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/drawable-mdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/drawable-nodpi/data.jpg b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/drawable-nodpi/data.jpg
new file mode 100644
index 0000000..81a87b1
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/drawable-nodpi/data.jpg
Binary files differ
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/drawable-xhdpi/ic_launcher.png b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/drawable-xhdpi/ic_launcher.png
new file mode 100755
index 0000000..7c5aeed
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/drawable-xhdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/drawable-xxhdpi/ic_launcher.png b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/drawable-xxhdpi/ic_launcher.png
new file mode 100755
index 0000000..3c45f51
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/drawable-xxhdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/layout/activity_main.xml b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/layout/activity_main.xml
new file mode 100755
index 0000000..be1aa49
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/layout/activity_main.xml
@@ -0,0 +1,36 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <LinearLayout style="@style/Widget.SampleMessageTile"
+                  android:layout_width="match_parent"
+                  android:layout_height="wrap_content"
+                  android:orientation="vertical">
+
+        <TextView style="@style/Widget.SampleMessage"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginLeft="@dimen/horizontal_page_margin"
+            android:layout_marginRight="@dimen/horizontal_page_margin"
+            android:layout_marginTop="@dimen/vertical_page_margin"
+            android:layout_marginBottom="@dimen/vertical_page_margin"
+            android:text="@string/intro_message" />
+    </LinearLayout>
+</LinearLayout>
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/layout/main_layout.xml b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/layout/main_layout.xml
new file mode 100644
index 0000000..69695f0
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/layout/main_layout.xml
@@ -0,0 +1,22 @@
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#0099cc"
+    tools:context=".MainActivity">
+
+    <ImageView
+        android:id="@+id/imageView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:scaleType="fitCenter"
+        android:src="@drawable/data" />
+
+    <SeekBar
+        android:id="@+id/seekBar1"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_gravity="bottom"
+        android:layout_marginBottom="16dp" />
+
+</FrameLayout>
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values-sw600dp/template-dimens.xml b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values-sw600dp/template-dimens.xml
new file mode 100644
index 0000000..22074a2
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values-sw600dp/template-dimens.xml
@@ -0,0 +1,24 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <!-- Semantic definitions -->
+
+    <dimen name="horizontal_page_margin">@dimen/margin_huge</dimen>
+    <dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
+
+</resources>
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values-sw600dp/template-styles.xml b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values-sw600dp/template-styles.xml
new file mode 100644
index 0000000..03d1974
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values-sw600dp/template-styles.xml
@@ -0,0 +1,25 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <style name="Widget.SampleMessage">
+        <item name="android:textAppearance">?android:textAppearanceLarge</item>
+        <item name="android:lineSpacingMultiplier">1.2</item>
+        <item name="android:shadowDy">-6.5</item>
+    </style>
+
+</resources>
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values-v11/styles.xml b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values-v11/styles.xml
new file mode 100644
index 0000000..f3a90c6
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values-v11/styles.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <!--
+        Base application theme for API 11+. This theme completely replaces
+        AppBaseTheme from res/values/styles.xml on API 11+ devices.
+    -->
+    <style name="AppBaseTheme" parent="android:Theme.Holo.Light">
+        <!-- API 11 theme customizations can go here. -->
+    </style>
+
+    <style name="FullscreenTheme" parent="android:Theme.Holo">
+        <item name="android:actionBarStyle">@style/FullscreenActionBarStyle</item>
+        <item name="android:windowActionBarOverlay">true</item>
+        <item name="android:windowBackground">@null</item>
+        <item name="buttonBarStyle">?android:attr/buttonBarStyle</item>
+        <item name="buttonBarButtonStyle">?android:attr/buttonBarButtonStyle</item>
+    </style>
+
+    <style name="FullscreenActionBarStyle" parent="android:Widget.Holo.ActionBar">
+        <item name="android:background">@color/black_overlay</item>
+    </style>
+
+</resources>
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values-v14/styles.xml b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values-v14/styles.xml
new file mode 100644
index 0000000..a91fd03
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values-v14/styles.xml
@@ -0,0 +1,12 @@
+<resources>
+
+    <!--
+        Base application theme for API 14+. This theme completely replaces
+        AppBaseTheme from BOTH res/values/styles.xml and
+        res/values-v11/styles.xml on API 14+ devices.
+    -->
+    <style name="AppBaseTheme" parent="android:Theme.Holo.Light.DarkActionBar">
+        <!-- API 14 theme customizations can go here. -->
+    </style>
+
+</resources>
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values/attrs.xml b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values/attrs.xml
new file mode 100644
index 0000000..e67df0a
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values/attrs.xml
@@ -0,0 +1,14 @@
+<resources>
+
+    <!--
+         Declare custom theme attributes that allow changing which styles are
+         used for button bars depending on the API level.
+         ?android:attr/buttonBarStyle is new as of API 11 so this is
+         necessary to support previous API levels.
+    -->
+    <declare-styleable name="ButtonBarContainerTheme">
+        <attr name="buttonBarStyle" format="reference" />
+        <attr name="buttonBarButtonStyle" format="reference" />
+    </declare-styleable>
+
+</resources>
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values/base-strings.xml b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values/base-strings.xml
new file mode 100644
index 0000000..a35b320
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values/base-strings.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+
+
+<resources>
+    <string name="app_name">BasicRenderScript</string>
+    <string name="intro_message">
+        <![CDATA[
+        
+            
+            BasicRenderScript sample demonstrates basic steps how to use renderScript.
+			In the sample, it performs graphical filter operation on a image with renderScript.
+            
+        
+        ]]>
+    </string>
+</resources>
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values/colors.xml b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values/colors.xml
new file mode 100644
index 0000000..327c060
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values/colors.xml
@@ -0,0 +1,5 @@
+<resources>
+
+    <color name="black_overlay">#66000000</color>
+
+</resources>
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values/styles.xml b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values/styles.xml
new file mode 100644
index 0000000..49299b9
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values/styles.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+
+    <style name="FullscreenTheme" parent="android:Theme.NoTitleBar">
+        <item name="android:windowContentOverlay">@null</item>
+        <item name="android:windowBackground">@null</item>
+        <item name="buttonBarStyle">@style/ButtonBar</item>
+        <item name="buttonBarButtonStyle">@style/ButtonBarButton</item>
+    </style>
+
+    <style name="ButtonBar">
+        <item name="android:paddingLeft">2dp</item>
+        <item name="android:paddingTop">5dp</item>
+        <item name="android:paddingRight">2dp</item>
+        <item name="android:paddingBottom">0dp</item>
+        <item name="android:background">@android:drawable/bottom_bar</item>
+    </style>
+
+    <style name="ButtonBarButton" />
+
+</resources>
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values/template-dimens.xml b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values/template-dimens.xml
new file mode 100644
index 0000000..39e710b
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values/template-dimens.xml
@@ -0,0 +1,32 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <!-- Define standard dimensions to comply with Holo-style grids and rhythm. -->
+
+    <dimen name="margin_tiny">4dp</dimen>
+    <dimen name="margin_small">8dp</dimen>
+    <dimen name="margin_medium">16dp</dimen>
+    <dimen name="margin_large">32dp</dimen>
+    <dimen name="margin_huge">64dp</dimen>
+
+    <!-- Semantic definitions -->
+
+    <dimen name="horizontal_page_margin">@dimen/margin_medium</dimen>
+    <dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
+
+</resources>
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values/template-styles.xml b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values/template-styles.xml
new file mode 100644
index 0000000..404623e
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/src/main/res/values/template-styles.xml
@@ -0,0 +1,42 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <!-- Activity themes -->
+
+    <style name="Theme.Base" parent="android:Theme.Holo.Light" />
+
+    <style name="Theme.Sample" parent="Theme.Base" />
+
+    <style name="AppTheme" parent="Theme.Sample" />
+    <!-- Widget styling -->
+
+    <style name="Widget" />
+
+    <style name="Widget.SampleMessage">
+        <item name="android:textAppearance">?android:textAppearanceMedium</item>
+        <item name="android:lineSpacingMultiplier">1.1</item>
+    </style>
+
+    <style name="Widget.SampleMessageTile">
+        <item name="android:background">@drawable/tile</item>
+        <item name="android:shadowColor">#7F000000</item>
+        <item name="android:shadowDy">-3.5</item>
+        <item name="android:shadowRadius">2</item>
+    </style>
+
+</resources>
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/tests/AndroidManifest.xml b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/tests/AndroidManifest.xml
new file mode 100644
index 0000000..02a8db3
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/tests/AndroidManifest.xml
@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Copyright (C) 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+<!-- package name must be unique so suffix with "tests" so package loader doesn't ignore us -->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.example.android.basicrenderscript.tests"
+          android:versionCode="1"
+          android:versionName="1.0">
+
+    <uses-sdk
+            android:minSdkVersion="8"
+            android:targetSdkVersion="19" />
+
+    <!-- We add an application tag here just so that we can indicate that
+         this package needs to link against the android.test library,
+         which is needed when building test cases. -->
+    <application>
+        <uses-library android:name="android.test.runner" />
+    </application>
+
+    <!--
+    Specifies the instrumentation test runner used to run the tests.
+    -->
+    <instrumentation
+            android:name="android.test.InstrumentationTestRunner"
+            android:targetPackage="com.example.android.basicrenderscript"
+            android:label="Tests for com.example.android.basicrenderscript" />
+
+</manifest>
\ No newline at end of file
diff --git a/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/tests/src/com/example/android/basicrenderscript/tests/SampleTests.java b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/tests/src/com/example/android/basicrenderscript/tests/SampleTests.java
new file mode 100644
index 0000000..b361507
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/BasicRenderScriptSample/tests/src/com/example/android/basicrenderscript/tests/SampleTests.java
@@ -0,0 +1,79 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+
+/*
+* Copyright (C) 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*      http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+package com.example.android.basicrenderscript.tests;
+
+import com.example.android.basicrenderscript.*;
+
+import android.test.ActivityInstrumentationTestCase2;
+
+/**
+* Tests for BasicRenderScript sample.
+*/
+public class SampleTests extends ActivityInstrumentationTestCase2<MainActivity> {
+
+    private MainActivity mTestActivity;
+    private BasicRenderScriptFragment mTestFragment;
+
+    public SampleTests() {
+        super(MainActivity.class);
+    }
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+
+        // Starts the activity under test using the default Intent with:
+        // action = {@link Intent#ACTION_MAIN}
+        // flags = {@link Intent#FLAG_ACTIVITY_NEW_TASK}
+        // All other fields are null or empty.
+        mTestActivity = getActivity();
+        mTestFragment = (BasicRenderScriptFragment)
+            mTestActivity.getSupportFragmentManager().getFragments().get(1);
+    }
+
+    /**
+    * Test if the test fixture has been set up correctly.
+    */
+    public void testPreconditions() {
+        //Try to add a message to add context to your assertions. These messages will be shown if
+        //a tests fails and make it easy to understand why a test failed
+        assertNotNull("mTestActivity is null", mTestActivity);
+        assertNotNull("mTestFragment is null", mTestFragment);
+    }
+
+    /**
+    * Add more tests below.
+    */
+
+}
\ No newline at end of file
diff --git a/prebuilts/gradle/BasicRenderScript/README.txt b/prebuilts/gradle/BasicRenderScript/README.txt
new file mode 100644
index 0000000..9616c58
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/README.txt
@@ -0,0 +1,18 @@
+Build Instructions
+-------------------
+
+This sample uses the Gradle build system. To build this project, use the
+"gradlew build" command or use "Import Project" in Android Studio.
+
+To see a list of all available commands, run "gradlew tasks".
+
+Dependencies
+-------------
+
+- Android SDK Build-tools v18.1
+- Android Support Repository v2
+
+Dependencies are available for download via the Android SDK Manager.
+
+Android Studio is available for download at:
+    http://developer.android.com/sdk/installing/studio.html
diff --git a/prebuilts/gradle/BasicRenderScript/build.gradle b/prebuilts/gradle/BasicRenderScript/build.gradle
new file mode 100644
index 0000000..5cf5d3d
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/build.gradle
@@ -0,0 +1,14 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/prebuilts/gradle/BasicRenderScript/gradle/wrapper/gradle-wrapper.jar b/prebuilts/gradle/BasicRenderScript/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..5838598
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/gradle/wrapper/gradle-wrapper.jar
Binary files differ
diff --git a/prebuilts/gradle/BasicRenderScript/gradle/wrapper/gradle-wrapper.properties b/prebuilts/gradle/BasicRenderScript/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..8e914ab
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Thu Jan 30 14:48:26 PST 2014
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=http\://services.gradle.org/distributions/gradle-1.10-bin.zip
diff --git a/prebuilts/gradle/BasicRenderScript/gradlew b/prebuilts/gradle/BasicRenderScript/gradlew
new file mode 100755
index 0000000..91a7e26
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/gradlew
@@ -0,0 +1,164 @@
+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+esac
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched.
+if $cygwin ; then
+    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+fi
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >&-
+APP_HOME="`pwd -P`"
+cd "$SAVED" >&-
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+    JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
diff --git a/prebuilts/gradle/BasicRenderScript/gradlew.bat b/prebuilts/gradle/BasicRenderScript/gradlew.bat
new file mode 100644
index 0000000..aec9973
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/gradlew.bat
@@ -0,0 +1,90 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windowz variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+if "%@eval[2+2]" == "4" goto 4NT_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+goto execute
+
+:4NT_args
+@rem Get arguments from the 4NT Shell from JP Software
+set CMD_LINE_ARGS=%$
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/prebuilts/gradle/BasicRenderScript/settings.gradle b/prebuilts/gradle/BasicRenderScript/settings.gradle
new file mode 100644
index 0000000..cb17006
--- /dev/null
+++ b/prebuilts/gradle/BasicRenderScript/settings.gradle
@@ -0,0 +1,4 @@
+
+
+
+include 'BasicRenderScriptSample'
diff --git a/prebuilts/gradle/BasicSyncAdapter/BasicSyncAdapterSample/build.gradle b/prebuilts/gradle/BasicSyncAdapter/BasicSyncAdapterSample/build.gradle
index ae0d465..007d99d 100644
--- a/prebuilts/gradle/BasicSyncAdapter/BasicSyncAdapterSample/build.gradle
+++ b/prebuilts/gradle/BasicSyncAdapter/BasicSyncAdapterSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,8 +15,8 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 7
-    compile "com.android.support:support-v4:18.0.+"
-    compile "com.android.support:gridlayout-v7:18.0.+"
+    compile "com.android.support:support-v4:19.0.+"
+    compile "com.android.support:gridlayout-v7:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -29,7 +29,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/build.gradle b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/build.gradle
new file mode 100644
index 0000000..f73b206
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/build.gradle
@@ -0,0 +1,58 @@
+
+
+
+buildscript {
+    repositories {
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:0.8.+'
+    }
+}
+
+apply plugin: 'android'
+
+dependencies {
+    // Add the support lib that is appropriate for SDK 19
+    compile "com.android.support:support-v13:19.0.+"
+}
+
+// The sample build uses multiple directories to
+// keep boilerplate and common code separate from
+// the main sample code.
+List<String> dirs = [
+    'main',     // main sample code; look here for the interesting stuff.
+    'common',   // components that are reused by multiple samples
+    'template'] // boilerplate code that is generated by the sample template process
+
+android {
+    compileSdkVersion 19
+    buildToolsVersion "19.0.1"
+
+    sourceSets {
+        main {
+            dirs.each { dir ->
+                java.srcDirs "src/${dir}/java"
+                res.srcDirs "src/${dir}/res"
+            }
+        }
+        instrumentTest.setRoot('tests')
+        instrumentTest.java.srcDirs = ['tests/src']
+    }
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/AndroidManifest.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..2c4e4f2
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/AndroidManifest.xml
@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2014 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.android.batchstepsensor"
+    android:versionCode="1"
+    android:versionName="1.0">
+
+    <!-- This sample requires at least Android KitKat for sensor batching support -->
+    <uses-sdk android:minSdkVersion="19" android:targetSdkVersion="19" />
+
+    <!-- Require the step counter and step detector sensors.
+    See the method BatchStepSensorFragment#isKitkatWithStepSensor() for a programmatic check if
+    support is optional and the application supports a case where these sensors are not available.
+    -->
+    <uses-feature android:name="android.hardware.sensor.stepcounter" />
+    <uses-feature android:name="android.hardware.sensor.stepdetector" />
+
+
+    <application android:allowBackup="true"
+        android:label="@string/app_name"
+        android:icon="@drawable/ic_launcher"
+        android:theme="@style/AppTheme">
+
+        <activity android:name=".MainActivity"
+                  android:label="@string/app_name">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+
+</manifest>
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/BatchStepSensorFragment.java b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/BatchStepSensorFragment.java
new file mode 100644
index 0000000..aab0fc3
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/BatchStepSensorFragment.java
@@ -0,0 +1,588 @@
+/*
+* Copyright 2014 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+package com.example.android.batchstepsensor;
+
+import android.app.Activity;
+import android.content.pm.PackageManager;
+import android.hardware.Sensor;
+import android.hardware.SensorEvent;
+import android.hardware.SensorEventListener;
+import android.hardware.SensorManager;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+
+import com.example.android.common.logger.Log;
+
+public class BatchStepSensorFragment extends Fragment implements OnCardClickListener {
+
+    public static final String TAG = "StepSensorSample";
+    // Cards
+    private CardStreamFragment mCards = null;
+
+    // Card tags
+    public static final String CARD_INTRO = "intro";
+    public static final String CARD_REGISTER_DETECTOR = "register_detector";
+    public static final String CARD_REGISTER_COUNTER = "register_counter";
+    public static final String CARD_BATCHING_DESCRIPTION = "register_batching_description";
+    public static final String CARD_COUNTING = "counting";
+    public static final String CARD_EXPLANATION = "explanation";
+    public static final String CARD_NOBATCHSUPPORT = "error";
+
+    // Actions from REGISTER cards
+    public static final int ACTION_REGISTER_DETECT_NOBATCHING = 10;
+    public static final int ACTION_REGISTER_DETECT_BATCHING_5s = 11;
+    public static final int ACTION_REGISTER_DETECT_BATCHING_10s = 12;
+    public static final int ACTION_REGISTER_COUNT_NOBATCHING = 21;
+    public static final int ACTION_REGISTER_COUNT_BATCHING_5s = 22;
+    public static final int ACTION_REGISTER_COUNT_BATCHING_10s = 23;
+    // Action from COUNTING card
+    public static final int ACTION_UNREGISTER = 1;
+    // Actions from description cards
+    private static final int ACTION_BATCHING_DESCRIPTION_DISMISS = 2;
+    private static final int ACTION_EXPLANATION_DISMISS = 3;
+
+    // State of application, used to register for sensors when app is restored
+    public static final int STATE_OTHER = 0;
+    public static final int STATE_COUNTER = 1;
+    public static final int STATE_DETECTOR = 2;
+
+    // Bundle tags used to store data when restoring application state
+    private static final String BUNDLE_STATE = "state";
+    private static final String BUNDLE_LATENCY = "latency";
+    private static final String BUNDLE_STEPS = "steps";
+
+    // max batch latency is specified in microseconds
+    private static final int BATCH_LATENCY_0 = 0; // no batching
+    private static final int BATCH_LATENCY_10s = 10000000;
+    private static final int BATCH_LATENCY_5s = 5000000;
+
+    /*
+    For illustration we keep track of the last few events and show their delay from when the
+    event occurred until it was received by the event listener.
+    These variables keep track of the list of timestamps and the number of events.
+     */
+    // Number of events to keep in queue and display on card
+    private static final int EVENT_QUEUE_LENGTH = 10;
+    // List of timestamps when sensor events occurred
+    private float[] mEventDelays = new float[EVENT_QUEUE_LENGTH];
+
+    // number of events in event list
+    private int mEventLength = 0;
+    // pointer to next entry in sensor event list
+    private int mEventData = 0;
+
+    // Steps counted in current session
+    private int mSteps = 0;
+    // Value of the step counter sensor when the listener was registered.
+    // (Total steps are calculated from this value.)
+    private int mCounterSteps = 0;
+    // Steps counted by the step counter previously. Used to keep counter consistent across rotation
+    // changes
+    private int mPreviousCounterSteps = 0;
+    // State of the app (STATE_OTHER, STATE_COUNTER or STATE_DETECTOR)
+    private int mState = STATE_OTHER;
+    // When a listener is registered, the batch sensor delay in microseconds
+    private int mMaxDelay = 0;
+
+    @Override
+    public void onResume() {
+        super.onResume();
+
+        CardStreamFragment stream = getCardStream();
+        if (stream.getVisibleCardCount() < 1) {
+            // No cards are visible, started for the first time
+            // Prepare all cards and show the intro card.
+            initialiseCards();
+            showIntroCard();
+            // Show the registration card if the hardware is supported, show an error otherwise
+            if (isKitkatWithStepSensor()) {
+                showRegisterCard();
+            } else {
+                showErrorCard();
+            }
+        }
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+        // BEGIN_INCLUDE(onpause)
+        // Unregister the listener when the application is paused
+        unregisterListeners();
+        // END_INCLUDE(onpause)
+    }
+
+    /**
+     * Returns true if this device is supported. It needs to be running Android KitKat (4.4) or
+     * higher and has a step counter and step detector sensor.
+     * This check is useful when an app provides an alternative implementation or different
+     * functionality if the step sensors are not available or this code runs on a platform version
+     * below Android KitKat. If this functionality is required, then the minSDK parameter should
+     * be specified appropriately in the AndroidManifest.
+     *
+     * @return True iff the device can run this sample
+     */
+    private boolean isKitkatWithStepSensor() {
+        // BEGIN_INCLUDE(iskitkatsensor)
+        // Require at least Android KitKat
+        int currentApiVersion = android.os.Build.VERSION.SDK_INT;
+        // Check that the device supports the step counter and detector sensors
+        PackageManager packageManager = getActivity().getPackageManager();
+        return currentApiVersion >= android.os.Build.VERSION_CODES.KITKAT
+                && packageManager.hasSystemFeature(PackageManager.FEATURE_SENSOR_STEP_COUNTER)
+                && packageManager.hasSystemFeature(PackageManager.FEATURE_SENSOR_STEP_DETECTOR);
+        // END_INCLUDE(iskitkatsensor)
+    }
+
+    /**
+     * Handles a click on a card action.
+     * Registers a SensorEventListener (see {@link #registerEventListener(int, int)}) with the
+     * selected delay, dismisses cards and unregisters the listener
+     * (see {@link #unregisterListeners()}).
+     * Actions are defined when a card is created.
+     *
+     * @param cardActionId
+     * @param cardTag
+     */
+    @Override
+    public void onCardClick(int cardActionId, String cardTag) {
+
+        switch (cardActionId) {
+            // BEGIN_INCLUDE(onclick)
+            // Register Step Counter card
+            case ACTION_REGISTER_COUNT_NOBATCHING:
+                registerEventListener(BATCH_LATENCY_0, Sensor.TYPE_STEP_COUNTER);
+                break;
+            case ACTION_REGISTER_COUNT_BATCHING_5s:
+                registerEventListener(BATCH_LATENCY_5s, Sensor.TYPE_STEP_COUNTER);
+                break;
+            case ACTION_REGISTER_COUNT_BATCHING_10s:
+                registerEventListener(BATCH_LATENCY_10s, Sensor.TYPE_STEP_COUNTER);
+                break;
+
+            // Register Step Detector card
+            case ACTION_REGISTER_DETECT_NOBATCHING:
+                registerEventListener(BATCH_LATENCY_0, Sensor.TYPE_STEP_DETECTOR);
+                break;
+            case ACTION_REGISTER_DETECT_BATCHING_5s:
+                registerEventListener(BATCH_LATENCY_5s, Sensor.TYPE_STEP_DETECTOR);
+                break;
+            case ACTION_REGISTER_DETECT_BATCHING_10s:
+                registerEventListener(BATCH_LATENCY_10s, Sensor.TYPE_STEP_DETECTOR);
+                break;
+
+            // Unregister card
+            case ACTION_UNREGISTER:
+                showRegisterCard();
+                unregisterListeners();
+                // reset the application state when explicitly unregistered
+                mState = STATE_OTHER;
+                break;
+            // END_INCLUDE(onclick)
+            // Explanation cards
+            case ACTION_BATCHING_DESCRIPTION_DISMISS:
+                // permanently remove the batch description card, it will not be shown again
+                getCardStream().removeCard(CARD_BATCHING_DESCRIPTION);
+                break;
+            case ACTION_EXPLANATION_DISMISS:
+                // permanently remove the explanation card, it will not be shown again
+                getCardStream().removeCard(CARD_EXPLANATION);
+        }
+
+        // For register cards, display the counting card
+        if (cardTag.equals(CARD_REGISTER_COUNTER) || cardTag.equals(CARD_REGISTER_DETECTOR)) {
+            showCountingCards();
+        }
+    }
+
+    /**
+     * Register a {@link android.hardware.SensorEventListener} for the sensor and max batch delay.
+     * The maximum batch delay specifies the maximum duration in microseconds for which subsequent
+     * sensor events can be temporarily stored by the sensor before they are delivered to the
+     * registered SensorEventListener. A larger delay allows the system to handle sensor events more
+     * efficiently, allowing the system to switch to a lower power state while the sensor is
+     * capturing events. Once the max delay is reached, all stored events are delivered to the
+     * registered listener. Note that this value only specifies the maximum delay, the listener may
+     * receive events quicker. A delay of 0 disables batch mode and registers the listener in
+     * continuous mode.
+     * The optimium batch delay depends on the application. For example, a delay of 5 seconds or
+     * higher may be appropriate for an  application that does not update the UI in real time.
+     *
+     * @param maxdelay
+     * @param sensorType
+     */
+    private void registerEventListener(int maxdelay, int sensorType) {
+        // BEGIN_INCLUDE(register)
+
+        // Keep track of state so that the correct sensor type and batch delay can be set up when
+        // the app is restored (for example on screen rotation).
+        mMaxDelay = maxdelay;
+        if (sensorType == Sensor.TYPE_STEP_COUNTER) {
+            mState = STATE_COUNTER;
+            /*
+            Reset the initial step counter value, the first event received by the event listener is
+            stored in mCounterSteps and used to calculate the total number of steps taken.
+             */
+            mCounterSteps = 0;
+            Log.i(TAG, "Event listener for step counter sensor registered with a max delay of "
+                    + mMaxDelay);
+        } else {
+            mState = STATE_DETECTOR;
+            Log.i(TAG, "Event listener for step detector sensor registered with a max delay of "
+                    + mMaxDelay);
+        }
+
+        // Get the default sensor for the sensor type from the SenorManager
+        SensorManager sensorManager =
+                (SensorManager) getActivity().getSystemService(Activity.SENSOR_SERVICE);
+        // sensorType is either Sensor.TYPE_STEP_COUNTER or Sensor.TYPE_STEP_DETECTOR
+        Sensor sensor = sensorManager.getDefaultSensor(sensorType);
+
+        // Register the listener for this sensor in batch mode.
+        // If the max delay is 0, events will be delivered in continuous mode without batching.
+        final boolean batchMode = sensorManager.registerListener(
+                mListener, sensor, SensorManager.SENSOR_DELAY_NORMAL, maxdelay);
+
+        if (!batchMode) {
+            // Batch mode could not be enabled, show a warning message and switch to continuous mode
+            getCardStream().getCard(CARD_NOBATCHSUPPORT)
+                    .setDescription(getString(R.string.warning_nobatching));
+            getCardStream().showCard(CARD_NOBATCHSUPPORT);
+            Log.w(TAG, "Could not register sensor listener in batch mode, " +
+                    "falling back to continuous mode.");
+        }
+
+        if (maxdelay > 0 && batchMode) {
+            // Batch mode was enabled successfully, show a description card
+            getCardStream().showCard(CARD_BATCHING_DESCRIPTION);
+        }
+
+        // Show the explanation card
+        getCardStream().showCard(CARD_EXPLANATION);
+
+        // END_INCLUDE(register)
+
+    }
+
+    /**
+     * Unregisters the sensor listener if it is registered.
+     */
+    private void unregisterListeners() {
+        // BEGIN_INCLUDE(unregister)
+        SensorManager sensorManager =
+                (SensorManager) getActivity().getSystemService(Activity.SENSOR_SERVICE);
+        sensorManager.unregisterListener(mListener);
+        Log.i(TAG, "Sensor listener unregistered.");
+
+        // END_INCLUDE(unregister)
+    }
+
+    /**
+     * Resets the step counter by clearing all counting variables and lists.
+     */
+    private void resetCounter() {
+        // BEGIN_INCLUDE(reset)
+        mSteps = 0;
+        mCounterSteps = 0;
+        mEventLength = 0;
+        mEventDelays = new float[EVENT_QUEUE_LENGTH];
+        mPreviousCounterSteps = 0;
+        // END_INCLUDE(reset)
+    }
+
+
+    /**
+     * Listener that handles step sensor events for step detector and step counter sensors.
+     */
+    private final SensorEventListener mListener = new SensorEventListener() {
+        @Override
+        public void onSensorChanged(SensorEvent event) {
+            // BEGIN_INCLUDE(sensorevent)
+            // store the delay of this event
+            recordDelay(event);
+            final String delayString = getDelayString();
+
+            if (event.sensor.getType() == Sensor.TYPE_STEP_DETECTOR) {
+                // A step detector event is received for each step.
+                // This means we need to count steps ourselves
+
+                mSteps += event.values.length;
+
+                // Update the card with the latest step count
+                getCardStream().getCard(CARD_COUNTING)
+                        .setTitle(getString(R.string.counting_title, mSteps))
+                        .setDescription(getString(R.string.counting_description,
+                                getString(R.string.sensor_detector), mMaxDelay, delayString));
+
+                Log.i(TAG,
+                        "New step detected by STEP_DETECTOR sensor. Total step count: " + mSteps);
+
+            } else if (event.sensor.getType() == Sensor.TYPE_STEP_COUNTER) {
+
+                /*
+                A step counter event contains the total number of steps since the listener
+                was first registered. We need to keep track of this initial value to calculate the
+                number of steps taken, as the first value a listener receives is undefined.
+                 */
+                if (mCounterSteps < 1) {
+                    // initial value
+                    mCounterSteps = (int) event.values[0];
+                }
+
+                // Calculate steps taken based on first counter value received.
+                mSteps = (int) event.values[0] - mCounterSteps;
+
+                // Add the number of steps previously taken, otherwise the counter would start at 0.
+                // This is needed to keep the counter consistent across rotation changes.
+                mSteps = mSteps + mPreviousCounterSteps;
+
+                // Update the card with the latest step count
+                getCardStream().getCard(CARD_COUNTING)
+                        .setTitle(getString(R.string.counting_title, mSteps))
+                        .setDescription(getString(R.string.counting_description,
+                                getString(R.string.sensor_counter), mMaxDelay, delayString));
+                Log.i(TAG, "New step detected by STEP_COUNTER sensor. Total step count: " + mSteps);
+                // END_INCLUDE(sensorevent)
+            }
+        }
+
+        @Override
+        public void onAccuracyChanged(Sensor sensor, int accuracy) {
+
+        }
+    };
+
+    /**
+     * Records the delay for the event.
+     *
+     * @param event
+     */
+    private void recordDelay(SensorEvent event) {
+        // Calculate the delay from when event was recorded until it was received here in ms
+        // Event timestamp is recorded in us accuracy, but ms accuracy is sufficient here
+        mEventDelays[mEventData] = System.currentTimeMillis() - (event.timestamp / 1000000L);
+
+        // Increment length counter
+        mEventLength = Math.min(EVENT_QUEUE_LENGTH, mEventLength + 1);
+        // Move pointer to the next (oldest) location
+        mEventData = (mEventData + 1) % EVENT_QUEUE_LENGTH;
+    }
+
+    private final StringBuffer mDelayStringBuffer = new StringBuffer();
+
+    /**
+     * Returns a string describing the sensor delays recorded in
+     * {@link #recordDelay(android.hardware.SensorEvent)}.
+     *
+     * @return
+     */
+    private String getDelayString() {
+        // Empty the StringBuffer
+        mDelayStringBuffer.setLength(0);
+
+        // Loop over all recorded delays and append them to the buffer as a decimal
+        for (int i = 0; i < mEventLength; i++) {
+            if (i > 0) {
+                mDelayStringBuffer.append(", ");
+            }
+            final int index = (mEventData + i) % EVENT_QUEUE_LENGTH;
+            final float delay = mEventDelays[index] / 1000f; // convert delay from ms into s
+            mDelayStringBuffer.append(String.format("%1.1f", delay));
+        }
+
+        return mDelayStringBuffer.toString();
+    }
+
+    /**
+     * Records the state of the application into the {@link android.os.Bundle}.
+     *
+     * @param outState
+     */
+    @Override
+    public void onSaveInstanceState(Bundle outState) {
+        // BEGIN_INCLUDE(saveinstance)
+        super.onSaveInstanceState(outState);
+        // Store all variables required to restore the state of the application
+        outState.putInt(BUNDLE_LATENCY, mMaxDelay);
+        outState.putInt(BUNDLE_STATE, mState);
+        outState.putInt(BUNDLE_STEPS, mSteps);
+        // END_INCLUDE(saveinstance)
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+        // BEGIN_INCLUDE(restore)
+        // Fragment is being restored, reinitialise its state with data from the bundle
+        if (savedInstanceState != null) {
+            resetCounter();
+            mSteps = savedInstanceState.getInt(BUNDLE_STEPS);
+            mState = savedInstanceState.getInt(BUNDLE_STATE);
+            mMaxDelay = savedInstanceState.getInt(BUNDLE_LATENCY);
+
+            // Register listeners again if in detector or counter states with restored delay
+            if (mState == STATE_DETECTOR) {
+                registerEventListener(mMaxDelay, Sensor.TYPE_STEP_DETECTOR);
+            } else if (mState == STATE_COUNTER) {
+                // store the previous number of steps to keep  step counter count consistent
+                mPreviousCounterSteps = mSteps;
+                registerEventListener(mMaxDelay, Sensor.TYPE_STEP_COUNTER);
+            }
+        }
+        // END_INCLUDE(restore)
+    }
+
+    /**
+     * Hides the registration cards, reset the counter and show the step counting card.
+     */
+    private void showCountingCards() {
+        // Hide the registration cards
+        getCardStream().hideCard(CARD_REGISTER_DETECTOR);
+        getCardStream().hideCard(CARD_REGISTER_COUNTER);
+
+        // Show the explanation card if it has not been dismissed
+        getCardStream().showCard(CARD_EXPLANATION);
+
+        // Reset the step counter, then show the step counting card
+        resetCounter();
+
+        // Set the inital text for the step counting card before a step is recorded
+        String sensor = "-";
+        if (mState == STATE_COUNTER) {
+            sensor = getString(R.string.sensor_counter);
+        } else if (mState == STATE_DETECTOR) {
+            sensor = getString(R.string.sensor_detector);
+        }
+        // Set initial text
+        getCardStream().getCard(CARD_COUNTING)
+                .setTitle(getString(R.string.counting_title, 0))
+                .setDescription(getString(R.string.counting_description, sensor, mMaxDelay, "-"));
+
+        // Show the counting card and make it undismissable
+        getCardStream().showCard(CARD_COUNTING, false);
+
+    }
+
+    /**
+     * Show the introduction card
+     */
+    private void showIntroCard() {
+        Card c = new Card.Builder(this, CARD_INTRO)
+                .setTitle(getString(R.string.intro_title))
+                .setDescription(getString(R.string.intro_message))
+                .build(getActivity());
+        getCardStream().addCard(c, true);
+    }
+
+    /**
+     * Show two registration cards, one for the step detector and counter sensors.
+     */
+    private void showRegisterCard() {
+        // Hide the counting and explanation cards
+        getCardStream().hideCard(CARD_BATCHING_DESCRIPTION);
+        getCardStream().hideCard(CARD_EXPLANATION);
+        getCardStream().hideCard(CARD_COUNTING);
+
+        // Show two undismissable registration cards, one for each step sensor
+        getCardStream().showCard(CARD_REGISTER_DETECTOR, false);
+        getCardStream().showCard(CARD_REGISTER_COUNTER, false);
+    }
+
+    /**
+     * Show the error card.
+     */
+    private void showErrorCard() {
+        getCardStream().showCard(CARD_NOBATCHSUPPORT, false);
+    }
+
+    /**
+     * Initialise Cards.
+     */
+    private void initialiseCards() {
+        // Step counting
+        Card c = new Card.Builder(this, CARD_COUNTING)
+                .setTitle("Steps")
+                .setDescription("")
+                .addAction("Unregister Listener", ACTION_UNREGISTER, Card.ACTION_NEGATIVE)
+                .build(getActivity());
+        getCardStream().addCard(c);
+
+        // Register step detector listener
+        c = new Card.Builder(this, CARD_REGISTER_DETECTOR)
+                .setTitle(getString(R.string.register_detector_title))
+                .setDescription(getString(R.string.register_detector_description))
+                .addAction(getString(R.string.register_0),
+                        ACTION_REGISTER_DETECT_NOBATCHING, Card.ACTION_NEUTRAL)
+                .addAction(getString(R.string.register_5),
+                        ACTION_REGISTER_DETECT_BATCHING_5s, Card.ACTION_NEUTRAL)
+                .addAction(getString(R.string.register_10),
+                        ACTION_REGISTER_DETECT_BATCHING_10s, Card.ACTION_NEUTRAL)
+                .build(getActivity());
+        getCardStream().addCard(c);
+
+        // Register step counter listener
+        c = new Card.Builder(this, CARD_REGISTER_COUNTER)
+                .setTitle(getString(R.string.register_counter_title))
+                .setDescription(getString(R.string.register_counter_description))
+                .addAction(getString(R.string.register_0),
+                        ACTION_REGISTER_COUNT_NOBATCHING, Card.ACTION_NEUTRAL)
+                .addAction(getString(R.string.register_5),
+                        ACTION_REGISTER_COUNT_BATCHING_5s, Card.ACTION_NEUTRAL)
+                .addAction(getString(R.string.register_10),
+                        ACTION_REGISTER_COUNT_BATCHING_10s, Card.ACTION_NEUTRAL)
+                .build(getActivity());
+        getCardStream().addCard(c);
+
+
+        // Batching description
+        c = new Card.Builder(this, CARD_BATCHING_DESCRIPTION)
+                .setTitle(getString(R.string.batching_queue_title))
+                .setDescription(getString(R.string.batching_queue_description))
+                .addAction(getString(R.string.action_notagain),
+                        ACTION_BATCHING_DESCRIPTION_DISMISS, Card.ACTION_POSITIVE)
+                .build(getActivity());
+        getCardStream().addCard(c);
+
+        // Explanation
+        c = new Card.Builder(this, CARD_EXPLANATION)
+                .setDescription(getString(R.string.explanation_description))
+                .addAction(getString(R.string.action_notagain),
+                        ACTION_EXPLANATION_DISMISS, Card.ACTION_POSITIVE)
+                .build(getActivity());
+        getCardStream().addCard(c);
+
+        // Error
+        c = new Card.Builder(this, CARD_NOBATCHSUPPORT)
+                .setTitle(getString(R.string.error_title))
+                .setDescription(getString(R.string.error_nosensor))
+                .build(getActivity());
+        getCardStream().addCard(c);
+    }
+
+    /**
+     * Returns the cached CardStreamFragment used to show cards.
+     *
+     * @return
+     */
+    private CardStreamFragment getCardStream() {
+        if (mCards == null) {
+            mCards = ((CardStream) getActivity()).getCardStream();
+        }
+        return mCards;
+    }
+
+}
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/Card.java b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/Card.java
new file mode 100644
index 0000000..fb885c7
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/Card.java
@@ -0,0 +1,750 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+
+
+package com.example.android.batchstepsensor;
+
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
+import android.animation.ObjectAnimator;
+import android.app.Activity;
+import android.graphics.Color;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.ProgressBar;
+import android.widget.TextView;
+
+import java.util.ArrayList;
+
+/**
+ * A Card contains a description and has a visual state. Optionally a card also contains a title,
+ * progress indicator and zero or more actions. It is constructed through the {@link Builder}.
+ */
+public class Card {
+
+    public static final int ACTION_POSITIVE = 1;
+    public static final int ACTION_NEGATIVE = 2;
+    public static final int ACTION_NEUTRAL = 3;
+
+    public static final int PROGRESS_TYPE_NO_PROGRESS = 0;
+    public static final int PROGRESS_TYPE_NORMAL = 1;
+    public static final int PROGRESS_TYPE_INDETERMINATE = 2;
+    public static final int PROGRESS_TYPE_LABEL = 3;
+
+    private OnCardClickListener mClickListener;
+
+
+    // The card model contains a reference to its desired layout (for extensibility), title,
+    // description, zero to many action buttons, and zero or 1 progress indicators.
+    private int mLayoutId = R.layout.card;
+
+    /**
+     * Tag that uniquely identifies this card.
+     */
+    private String mTag = null;
+
+    private String mTitle = null;
+    private String mDescription = null;
+
+    private View mCardView = null;
+    private View mOverlayView = null;
+    private TextView mTitleView = null;
+    private TextView mDescView = null;
+    private View mActionAreaView = null;
+
+    private Animator mOngoingAnimator = null;
+
+    /**
+     * Visual state, either {@link #CARD_STATE_NORMAL}, {@link #CARD_STATE_FOCUSED} or
+     * {@link #CARD_STATE_INACTIVE}.
+     */
+    private int mCardState = CARD_STATE_NORMAL;
+    public static final int CARD_STATE_NORMAL = 1;
+    public static final int CARD_STATE_FOCUSED = 2;
+    public static final int CARD_STATE_INACTIVE = 3;
+
+    /**
+     * Represent actions that can be taken from the card.  Stylistically the developer can
+     * designate the action as positive, negative (ok/cancel, for instance), or neutral.
+     * This "type" can be used as a UI hint.
+     * @see com.example.android.sensors.batchstepsensor.Card.CardAction
+     */
+    private ArrayList<CardAction> mCardActions = new ArrayList<CardAction>();
+
+    /**
+     * Some cards will have a sense of "progress" which should be associated with, but separated
+     * from its "parent" card.  To push for simplicity in samples, Cards are designed to have
+     * a maximum of one progress indicator per Card.
+     */
+    private CardProgress mCardProgress = null;
+
+    public Card() {
+    }
+
+    public String getTag() {
+        return mTag;
+    }
+
+    public View getView() {
+        return mCardView;
+    }
+
+
+    public Card setDescription(String desc) {
+        if (mDescView != null) {
+            mDescription = desc;
+            mDescView.setText(desc);
+        }
+        return this;
+    }
+
+    public Card setTitle(String title) {
+        if (mTitleView != null) {
+            mTitle = title;
+            mTitleView.setText(title);
+        }
+        return this;
+    }
+
+
+    /**
+     * Return the UI state, either {@link #CARD_STATE_NORMAL}, {@link #CARD_STATE_FOCUSED}
+     * or {@link #CARD_STATE_INACTIVE}.
+     */
+    public int getState() {
+        return mCardState;
+    }
+
+    /**
+     * Set the UI state. The parameter describes the state and must be either
+     * {@link #CARD_STATE_NORMAL}, {@link #CARD_STATE_FOCUSED} or {@link #CARD_STATE_INACTIVE}.
+     * Note: This method must be called from the UI Thread.
+     * @param state
+     * @return The card itself, allows for chaining of calls
+     */
+    public Card setState(int state) {
+        mCardState = state;
+        if (null != mOverlayView) {
+            if (null != mOngoingAnimator) {
+                mOngoingAnimator.end();
+                mOngoingAnimator = null;
+            }
+            switch (state) {
+                case CARD_STATE_NORMAL: {
+                    mOverlayView.setVisibility(View.GONE);
+                    mOverlayView.setAlpha(1.f);
+                    break;
+                }
+                case CARD_STATE_FOCUSED: {
+                    mOverlayView.setVisibility(View.VISIBLE);
+                    mOverlayView.setBackgroundResource(R.drawable.card_overlay_focused);
+                    ObjectAnimator animator = ObjectAnimator.ofFloat(mOverlayView, "alpha", 0.f);
+                    animator.setRepeatMode(ObjectAnimator.REVERSE);
+                    animator.setRepeatCount(ObjectAnimator.INFINITE);
+                    animator.setDuration(1000);
+                    animator.start();
+                    mOngoingAnimator = animator;
+                    break;
+                }
+                case CARD_STATE_INACTIVE: {
+                    mOverlayView.setVisibility(View.VISIBLE);
+                    mOverlayView.setAlpha(1.f);
+                    mOverlayView.setBackgroundColor(Color.argb(0xaa, 0xcc, 0xcc, 0xcc));
+                    break;
+                }
+            }
+        }
+        return this;
+    }
+
+    /**
+     * Set the type of progress indicator.
+     * The progress type can only be changed if the Card was initially build with a progress
+     * indicator.
+     * See {@link Builder#setProgressType(int)}.
+     * Must be a value of either {@link #PROGRESS_TYPE_NORMAL},
+     * {@link #PROGRESS_TYPE_INDETERMINATE}, {@link #PROGRESS_TYPE_LABEL} or
+     * {@link #PROGRESS_TYPE_NO_PROGRESS}.
+     * @param progressType
+     * @return The card itself, allows for chaining of calls
+     */
+    public Card setProgressType(int progressType) {
+        if (mCardProgress == null) {
+            mCardProgress = new CardProgress();
+        }
+        mCardProgress.setProgressType(progressType);
+        return this;
+    }
+
+    /**
+     * Return the progress indicator type. A value of either {@link #PROGRESS_TYPE_NORMAL},
+     * {@link #PROGRESS_TYPE_INDETERMINATE}, {@link #PROGRESS_TYPE_LABEL}. Otherwise if no progress
+     * indicator is enabled, {@link #PROGRESS_TYPE_NO_PROGRESS} is returned.
+     * @return
+     */
+    public int getProgressType() {
+        if (mCardProgress == null) {
+            return PROGRESS_TYPE_NO_PROGRESS;
+        }
+        return mCardProgress.progressType;
+    }
+
+    /**
+     * Set the progress to the specified value. Only applicable if the card has a
+     * {@link #PROGRESS_TYPE_NORMAL} progress type.
+     * @param progress
+     * @return
+     * @see #setMaxProgress(int)
+     */
+    public Card setProgress(int progress) {
+        if (mCardProgress != null) {
+            mCardProgress.setProgress(progress);
+        }
+        return this;
+    }
+
+    /**
+     * Set the range of the progress to 0...max. Only applicable if the card has a
+     * {@link #PROGRESS_TYPE_NORMAL} progress type.
+     * @return
+     */
+    public Card setMaxProgress(int max){
+        if (mCardProgress != null) {
+            mCardProgress.setMax(max);
+        }
+        return this;
+    }
+
+    /**
+     * Set the label text for the progress if the card has a progress type of
+     * {@link #PROGRESS_TYPE_NORMAL}, {@link #PROGRESS_TYPE_INDETERMINATE} or
+     * {@link #PROGRESS_TYPE_LABEL}
+     * @param text
+     * @return
+     */
+    public Card setProgressLabel(String text) {
+        if (mCardProgress != null) {
+            mCardProgress.setProgressLabel(text);
+        }
+        return this;
+    }
+
+    /**
+     * Toggle the visibility of the progress section of the card. Only applicable if
+     * the card has a progress type of
+     * {@link #PROGRESS_TYPE_NORMAL}, {@link #PROGRESS_TYPE_INDETERMINATE} or
+     * {@link #PROGRESS_TYPE_LABEL}.
+     * @param isVisible
+     * @return
+     */
+    public Card setProgressVisibility(boolean isVisible) {
+        if (mCardProgress.progressView == null) {
+            return this; // Card does not have progress
+        }
+        mCardProgress.progressView.setVisibility(isVisible ? View.VISIBLE : View.GONE);
+
+        return this;
+    }
+
+    /**
+     * Adds an action to this card during build time.
+     *
+     * @param label
+     * @param id
+     * @param type
+     */
+    private void addAction(String label, int id, int type) {
+        CardAction cardAction = new CardAction();
+        cardAction.label = label;
+        cardAction.id = id;
+        cardAction.type = type;
+        mCardActions.add(cardAction);
+    }
+
+    /**
+     * Toggles the visibility of a card action.
+     * @param actionId
+     * @param isVisible
+     * @return
+     */
+    public Card setActionVisibility(int actionId, boolean isVisible) {
+        int visibilityFlag = isVisible ? View.VISIBLE : View.GONE;
+        for (CardAction action : mCardActions) {
+            if (action.id == actionId && action.actionView != null) {
+                action.actionView.setVisibility(visibilityFlag);
+            }
+        }
+        return this;
+    }
+
+    /**
+     * Toggles visibility of the action area of this Card through an animation.
+     * @param isVisible
+     * @return
+     */
+    public Card setActionAreaVisibility(boolean isVisible) {
+        if (mActionAreaView == null) {
+            return this; // Card does not have an action area
+        }
+
+        if (isVisible) {
+            // Show the action area
+            mActionAreaView.setVisibility(View.VISIBLE);
+            mActionAreaView.setPivotY(0.f);
+            mActionAreaView.setPivotX(mCardView.getWidth() / 2.f);
+            mActionAreaView.setAlpha(0.5f);
+            mActionAreaView.setRotationX(-90.f);
+            mActionAreaView.animate().rotationX(0.f).alpha(1.f).setDuration(400);
+        } else {
+            // Hide the action area
+            mActionAreaView.setPivotY(0.f);
+            mActionAreaView.setPivotX(mCardView.getWidth() / 2.f);
+            mActionAreaView.animate().rotationX(-90.f).alpha(0.f).setDuration(400).setListener(
+                    new AnimatorListenerAdapter() {
+                        @Override
+                        public void onAnimationEnd(Animator animation) {
+                            mActionAreaView.setVisibility(View.GONE);
+                        }
+                    });
+        }
+        return this;
+    }
+
+
+    /**
+     * Creates a shallow clone of the card.  Shallow means all values are present, but no views.
+     * This is useful for saving/restoring in the case of configuration changes, like screen
+     * rotation.
+     *
+     * @return A shallow clone of the card instance
+     */
+    public Card createShallowClone() {
+        Card cloneCard = new Card();
+
+        // Outer card values
+        cloneCard.mTitle = mTitle;
+        cloneCard.mDescription = mDescription;
+        cloneCard.mTag = mTag;
+        cloneCard.mLayoutId = mLayoutId;
+        cloneCard.mCardState = mCardState;
+
+        // Progress
+        if (mCardProgress != null) {
+            cloneCard.mCardProgress = mCardProgress.createShallowClone();
+        }
+
+        // Actions
+        for (CardAction action : mCardActions) {
+            cloneCard.mCardActions.add(action.createShallowClone());
+        }
+
+        return cloneCard;
+    }
+
+
+    /**
+     * Prepare the card to be stored for configuration change.
+     */
+    public void prepareForConfigurationChange() {
+        // Null out views.
+        mCardView = null;
+        for (CardAction action : mCardActions) {
+            action.actionView = null;
+        }
+        mCardProgress.progressView = null;
+    }
+
+    /**
+     * Creates a new {@link #Card}.
+     */
+    public static class Builder {
+        private Card mCard;
+
+        /**
+         * Instantiate the builder with data from a shallow clone.
+         * @param listener
+         * @param card
+         * @see Card#createShallowClone()
+         */
+        protected Builder(OnCardClickListener listener, Card card) {
+            mCard = card;
+            mCard.mClickListener = listener;
+        }
+
+        /**
+         * Instantiate the builder with the tag of the card.
+         * @param listener
+         * @param tag
+         */
+        public Builder(OnCardClickListener listener, String tag) {
+            mCard = new Card();
+            mCard.mTag = tag;
+            mCard.mClickListener = listener;
+        }
+
+        public Builder setTitle(String title) {
+            mCard.mTitle = title;
+            return this;
+        }
+
+        public Builder setDescription(String desc) {
+            mCard.mDescription = desc;
+            return this;
+        }
+
+        /**
+         * Add an action.
+         * The type describes how this action will be displayed. Accepted values are
+         * {@link #ACTION_NEUTRAL}, {@link #ACTION_POSITIVE} or {@link #ACTION_NEGATIVE}.
+         *
+         * @param label The text to display for this action
+         * @param id Identifier for this action, supplied in the click listener
+         * @param type UI style of action
+         * @return
+         */
+        public Builder addAction(String label, int id, int type) {
+            mCard.addAction(label, id, type);
+            return this;
+        }
+
+        /**
+         * Override the default layout.
+         * The referenced layout file has to contain the same identifiers as defined in the default
+         * layout configuration.
+         * @param layout
+         * @return
+         * @see R.layout.card
+         */
+        public Builder setLayout(int layout) {
+            mCard.mLayoutId = layout;
+            return this;
+        }
+
+        /**
+         * Set the type of progress bar to display.
+         * Accepted values are:
+         * <ul>
+         *     <li>{@link #PROGRESS_TYPE_NO_PROGRESS} disables the progress indicator</li>
+         *     <li>{@link #PROGRESS_TYPE_NORMAL} 
+         *     displays a standard, linear progress indicator.</li>
+         *     <li>{@link #PROGRESS_TYPE_INDETERMINATE} displays an indeterminate (infite) progress
+         *     indicator.</li>
+         *     <li>{@link #PROGRESS_TYPE_LABEL} only displays a label text in the progress area
+         *     of the card.</li>
+         * </ul>
+         *
+         * @param progressType
+         * @return
+         */
+        public Builder setProgressType(int progressType) {
+            mCard.setProgressType(progressType);
+            return this;
+        }
+
+        public Builder setProgressLabel(String label) {
+            // ensure the progress layout has been initialized, use 'no progress' by default
+            if (mCard.mCardProgress == null) {
+                mCard.setProgressType(PROGRESS_TYPE_NO_PROGRESS);
+            }
+            mCard.mCardProgress.label = label;
+            return this;
+        }
+
+        public Builder setProgressMaxValue(int maxValue) {
+            // ensure the progress layout has been initialized, use 'no progress' by default
+            if (mCard.mCardProgress == null) {
+                mCard.setProgressType(PROGRESS_TYPE_NO_PROGRESS);
+            }
+            mCard.mCardProgress.maxValue = maxValue;
+            return this;
+        }
+
+        public Builder setStatus(int status) {
+            mCard.setState(status);
+            return this;
+        }
+
+        public Card build(Activity activity) {
+            LayoutInflater inflater = activity.getLayoutInflater();
+            // Inflating the card.
+            ViewGroup cardView = (ViewGroup) inflater.inflate(mCard.mLayoutId,
+                    (ViewGroup) activity.findViewById(R.id.card_stream), false);
+
+            // Check that the layout contains a TextView with the card_title id
+            View viewTitle = cardView.findViewById(R.id.card_title);
+            if (mCard.mTitle != null && viewTitle != null) {
+                mCard.mTitleView = (TextView) viewTitle;
+                mCard.mTitleView.setText(mCard.mTitle);
+            } else if (viewTitle != null) {
+                viewTitle.setVisibility(View.GONE);
+            }
+
+            // Check that the layout contains a TextView with the card_content id
+            View viewDesc = cardView.findViewById(R.id.card_content);
+            if (mCard.mDescription != null && viewDesc != null) {
+                mCard.mDescView = (TextView) viewDesc;
+                mCard.mDescView.setText(mCard.mDescription);
+            } else if (viewDesc != null) {
+                cardView.findViewById(R.id.card_content).setVisibility(View.GONE);
+            }
+
+
+            ViewGroup actionArea = (ViewGroup) cardView.findViewById(R.id.card_actionarea);
+
+            // Inflate Progress
+            initializeProgressView(inflater, actionArea);
+
+            // Inflate all action views.
+            initializeActionViews(inflater, cardView, actionArea);
+
+            mCard.mCardView = cardView;
+            mCard.mOverlayView = cardView.findViewById(R.id.card_overlay);
+
+            return mCard;
+        }
+
+        /**
+         * Initialize data from the given card.
+         * @param card
+         * @return
+         * @see Card#createShallowClone()
+         */
+        public Builder cloneFromCard(Card card) {
+            mCard = card.createShallowClone();
+            return this;
+        }
+
+        /**
+         * Build the action views by inflating the appropriate layouts and setting the text and 
+         * values.
+         * @param inflater
+         * @param cardView
+         * @param actionArea
+         */
+        private void initializeActionViews(LayoutInflater inflater, ViewGroup cardView,
+                                           ViewGroup actionArea) {
+            if (!mCard.mCardActions.isEmpty()) {
+                // Set action area to visible only when actions are visible
+                actionArea.setVisibility(View.VISIBLE);
+                mCard.mActionAreaView = actionArea;
+            }
+
+            // Inflate all card actions
+            for (final CardAction action : mCard.mCardActions) {
+
+                int useActionLayout = 0;
+                switch (action.type) {
+                    case Card.ACTION_POSITIVE:
+                        useActionLayout = R.layout.card_button_positive;
+                        break;
+                    case Card.ACTION_NEGATIVE:
+                        useActionLayout = R.layout.card_button_negative;
+                        break;
+                    case Card.ACTION_NEUTRAL:
+                    default:
+                        useActionLayout = R.layout.card_button_neutral;
+                        break;
+                }
+
+                action.actionView = inflater.inflate(useActionLayout, actionArea, false);
+                Button actionButton = (Button) action.actionView.findViewById(R.id.card_button);
+
+                actionButton.setText(action.label);
+                actionButton.setOnClickListener(new View.OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        mCard.mClickListener.onCardClick(action.id, mCard.mTag);
+                    }
+                });
+                actionArea.addView(action.actionView);
+            }
+        }
+
+        /**
+         * Build the progress view into the given ViewGroup.
+         *
+         * @param inflater
+         * @param actionArea
+         */
+        private void initializeProgressView(LayoutInflater inflater, ViewGroup actionArea) {
+
+            // Only inflate progress layout if a progress type other than NO_PROGRESS was set.
+            if (mCard.mCardProgress != null) {
+                //Setup progress card.
+                View progressView = inflater.inflate(R.layout.card_progress, actionArea, false);
+                ProgressBar progressBar = 
+                        (ProgressBar) progressView.findViewById(R.id.card_progress);
+                ((TextView) progressView.findViewById(R.id.card_progress_text))
+                        .setText(mCard.mCardProgress.label);
+                progressBar.setMax(mCard.mCardProgress.maxValue);
+                progressBar.setProgress(0);
+                mCard.mCardProgress.progressView = progressView;
+                mCard.mCardProgress.setProgressType(mCard.getProgressType());
+                actionArea.addView(progressView);
+            }
+        }
+    }
+
+    /**
+     * Represents a clickable action, accessible from the bottom of the card.
+     * Fields include the label, an ID to specify the action that was performed in the callback,
+     * an action type (positive, negative, neutral), and the callback.
+     */
+    public class CardAction {
+
+        public String label;
+        public int id;
+        public int type;
+        public View actionView;
+
+        public CardAction createShallowClone() {
+            CardAction actionClone = new CardAction();
+            actionClone.label = label;
+            actionClone.id = id;
+            actionClone.type = type;
+            return actionClone;
+            // Not the view.  Never the view (don't want to hold view references for
+            // onConfigurationChange.
+        }
+
+    }
+
+    /**
+     * Describes the progress of a {@link Card}.
+     * Three types of progress are supported:
+     * <ul><li>{@link Card#PROGRESS_TYPE_NORMAL: Standard progress bar with label text</li>
+     * <li>{@link Card#PROGRESS_TYPE_INDETERMINATE}: Indeterminate progress bar with label txt</li>
+     * <li>{@link Card#PROGRESS_TYPE_LABEL}: Label only, no progresss bar</li>
+     * </ul>
+     */
+    public class CardProgress {
+        private int progressType = Card.PROGRESS_TYPE_NO_PROGRESS;
+        private String label = "";
+        private int currProgress = 0;
+        private int maxValue = 100;
+
+        public View progressView = null;
+        private ProgressBar progressBar = null;
+        private TextView progressLabel = null;
+
+        public CardProgress createShallowClone() {
+            CardProgress progressClone = new CardProgress();
+            progressClone.label = label;
+            progressClone.currProgress = currProgress;
+            progressClone.maxValue = maxValue;
+            progressClone.progressType = progressType;
+            return progressClone;
+        }
+
+        /**
+         * Set the progress. Only useful for the type {@link #PROGRESS_TYPE_NORMAL}.
+         * @param progress
+         * @see android.widget.ProgressBar#setProgress(int)
+         */
+        public void setProgress(int progress) {
+            currProgress = progress;
+            final ProgressBar bar = getProgressBar();
+            if (bar != null) {
+                bar.setProgress(currProgress);
+                bar.invalidate();
+            }
+        }
+
+        /**
+         * Set the range of the progress to 0...max.
+         * Only useful for the type {@link #PROGRESS_TYPE_NORMAL}.
+         * @param max
+         * @see android.widget.ProgressBar#setMax(int)
+         */
+        public void setMax(int max) {
+            maxValue = max;
+            final ProgressBar bar = getProgressBar();
+            if (bar != null) {
+                bar.setMax(maxValue);
+            }
+        }
+
+        /**
+         * Set the label text that appears near the progress indicator.
+         * @param text
+         */
+        public void setProgressLabel(String text) {
+            label = text;
+            final TextView labelView = getProgressLabel();
+            if (labelView != null) {
+                labelView.setText(text);
+            }
+        }
+
+        /**
+         * Set how progress is displayed. The parameter must be one of three supported types:
+         * <ul><li>{@link Card#PROGRESS_TYPE_NORMAL: Standard progress bar with label text</li>
+         * <li>{@link Card#PROGRESS_TYPE_INDETERMINATE}: 
+         * Indeterminate progress bar with label txt</li>
+         * <li>{@link Card#PROGRESS_TYPE_LABEL}: Label only, no progresss bar</li>
+         * @param type
+         */
+        public void setProgressType(int type) {
+            progressType = type;
+            if (progressView != null) {
+                switch (type) {
+                    case PROGRESS_TYPE_NO_PROGRESS: {
+                        progressView.setVisibility(View.GONE);
+                        break;
+                    }
+                    case PROGRESS_TYPE_NORMAL: {
+                        progressView.setVisibility(View.VISIBLE);
+                        getProgressBar().setIndeterminate(false);
+                        break;
+                    }
+                    case PROGRESS_TYPE_INDETERMINATE: {
+                        progressView.setVisibility(View.VISIBLE);
+                        getProgressBar().setIndeterminate(true);
+                        break;
+                    }
+                }
+            }
+        }
+
+        private TextView getProgressLabel() {
+            if (progressLabel != null) {
+                return progressLabel;
+            } else if (progressView != null) {
+                progressLabel = (TextView) progressView.findViewById(R.id.card_progress_text);
+                return progressLabel;
+            } else {
+                return null;
+            }
+        }
+
+        private ProgressBar getProgressBar() {
+            if (progressBar != null) {
+                return progressBar;
+            } else if (progressView != null) {
+                progressBar = (ProgressBar) progressView.findViewById(R.id.card_progress);
+                return progressBar;
+            } else {
+                return null;
+            }
+        }
+
+    }
+}
+
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/CardActionButton.java b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/CardActionButton.java
new file mode 100644
index 0000000..ea37e66
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/CardActionButton.java
@@ -0,0 +1,69 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+
+
+package com.example.android.batchstepsensor;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+import android.view.animation.BounceInterpolator;
+import android.view.animation.DecelerateInterpolator;
+import android.widget.Button;
+
+/**
+ * Custom Button with a special 'pressed' effect for touch events.
+ */
+public class CardActionButton extends Button {
+
+    public CardActionButton(Context context) {
+        super(context);
+    }
+
+    public CardActionButton(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public CardActionButton(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    @Override
+    public boolean onTouchEvent(MotionEvent event) {
+
+        switch(event.getAction()){
+            case MotionEvent.ACTION_DOWN:
+                setPressed(true);
+                animate().scaleX(0.98f).scaleY(0.98f).alpha(0.8f).setDuration(100).
+                        setInterpolator(new DecelerateInterpolator());
+                break;
+            case MotionEvent.ACTION_UP:
+                animate().scaleX(1.0f).scaleY(1.f).alpha(1.0f).setDuration(50).
+                        setInterpolator(new BounceInterpolator());
+                break;
+            case MotionEvent.ACTION_CANCEL:
+                animate().scaleX(1.0f).scaleY(1.f).alpha(1.0f).setDuration(50).
+                        setInterpolator(new BounceInterpolator());
+                break;
+        }
+
+        return super.onTouchEvent(event);
+    }
+
+}
+
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/CardLayout.java b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/CardLayout.java
new file mode 100644
index 0000000..8215275
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/CardLayout.java
@@ -0,0 +1,94 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+
+
+package com.example.android.batchstepsensor;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+import android.view.ViewConfiguration;
+import android.widget.RelativeLayout;
+
+/**
+ * Custom Button with a special 'pressed' effect for touch events.
+ */
+public class CardLayout extends RelativeLayout {
+
+    private boolean mSwiping = false;
+    private float mDownX = 0.f;
+    private float mDownY = 0.f;
+    private float mTouchSlop = 0.f;
+
+    public CardLayout(Context context) {
+        super(context);
+        init();
+    }
+
+    public CardLayout(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        init();
+    }
+
+    public CardLayout(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+        init();
+    }
+
+    private void init(){
+        setFocusable(true);
+        setDescendantFocusability(FOCUS_AFTER_DESCENDANTS);
+        setWillNotDraw(false);
+        setClickable(true);
+
+        mTouchSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop() * 2.f;
+    }
+
+    @Override
+    public boolean onTouchEvent(MotionEvent event) {
+        switch(event.getAction()){
+            case MotionEvent.ACTION_CANCEL:
+            case MotionEvent.ACTION_UP:
+                mSwiping = false;
+                break;
+        }
+        return super.onTouchEvent(event);
+    }
+
+    @Override
+    public boolean onInterceptTouchEvent(MotionEvent event) {
+
+        switch(event.getAction()){
+            case MotionEvent.ACTION_MOVE:
+                if( !mSwiping ){
+                    mSwiping = Math.abs(mDownX - event.getX()) > mTouchSlop;
+                }
+                break;
+            case MotionEvent.ACTION_DOWN:
+                mDownX = event.getX();
+                mDownY = event.getY();
+                mSwiping = false;
+                break;
+            case MotionEvent.ACTION_CANCEL:
+            case MotionEvent.ACTION_UP:
+                mSwiping = false;
+                break;
+        }
+        return mSwiping;
+    }
+}
\ No newline at end of file
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/CardStream.java b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/CardStream.java
new file mode 100644
index 0000000..5de9852
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/CardStream.java
@@ -0,0 +1,25 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+
+
+package com.example.android.batchstepsensor;
+
+public interface CardStream {
+    public CardStreamFragment getCardStream();
+}
+
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/CardStreamAnimator.java b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/CardStreamAnimator.java
new file mode 100644
index 0000000..a22ddd7
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/CardStreamAnimator.java
@@ -0,0 +1,120 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+
+
+package com.example.android.batchstepsensor;
+
+import android.animation.ObjectAnimator;
+import android.content.Context;
+import android.view.View;
+
+/**
+ * An abstract class which defines animators for CardStreamLinearLayout.
+ */
+abstract class CardStreamAnimator {
+
+    protected float mSpeedFactor = 1.f;
+
+    /**
+     * Set speed factor of animations. Higher value means longer duration & slow animation.
+     *
+     * @param speedFactor speed type 1: SLOW, 2: NORMAL, 3:FAST
+     */
+    public void setSpeedFactor(float speedFactor) {
+        mSpeedFactor = speedFactor;
+    }
+
+    /**
+     * Define initial animation of each child which fired when a user rotate a screen.
+     *
+     * @param context
+     * @return ObjectAnimator for initial animation
+     */
+    public abstract ObjectAnimator getInitalAnimator(Context context);
+
+    /**
+     * Define disappearing animation of a child which fired when a view is removed programmatically
+     *
+     * @param context
+     * @return ObjectAnimator for disappearing animation
+     */
+    public abstract ObjectAnimator getDisappearingAnimator(Context context);
+
+    /**
+     * Define appearing animation of a child which fired when a view is added programmatically
+     *
+     * @param context
+     * @return ObjectAnimator for appearing animation
+     */
+    public abstract ObjectAnimator getAppearingAnimator(Context context);
+
+    /**
+     * Define swipe-in (back to the origin position) animation of a child
+     * which fired when a view is not moved enough to be removed.
+     *
+     * @param view   target view
+     * @param deltaX delta distance by x-axis
+     * @param deltaY delta distance by y-axis
+     * @return ObjectAnimator for swipe-in animation
+     */
+    public abstract ObjectAnimator getSwipeInAnimator(View view, float deltaX, float deltaY);
+
+    /**
+     * Define swipe-out animation of a child
+     * which fired when a view is removing by a user swipe action.
+     *
+     * @param view   target view
+     * @param deltaX delta distance by x-axis
+     * @param deltaY delta distance by y-axis
+     * @return ObjectAnimator for swipe-out animation
+     */
+    public abstract ObjectAnimator getSwipeOutAnimator(View view, float deltaX, float deltaY);
+
+    /**
+     * A simple CardStreamAnimator implementation which is used to turn animations off.
+     */
+    public static class EmptyAnimator extends CardStreamAnimator {
+
+        @Override
+        public ObjectAnimator getInitalAnimator(Context context) {
+            return null;
+        }
+
+        @Override
+        public ObjectAnimator getDisappearingAnimator(Context context) {
+            return null;
+        }
+
+        @Override
+        public ObjectAnimator getAppearingAnimator(Context context) {
+            return null;
+        }
+
+        @Override
+        public ObjectAnimator getSwipeInAnimator(View view, float deltaX, float deltaY) {
+            return null;
+        }
+
+        @Override
+        public ObjectAnimator getSwipeOutAnimator(View view, float deltaX, float deltaY) {
+            return null;
+        }
+    }
+
+}
+
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/CardStreamFragment.java b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/CardStreamFragment.java
new file mode 100644
index 0000000..9f8b7cb
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/CardStreamFragment.java
@@ -0,0 +1,275 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+
+
+package com.example.android.batchstepsensor;
+
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.LinkedHashMap;
+
+
+/**
+ * A Fragment that handles a stream of cards.
+ * Cards can be shown or hidden. When a card is shown it can also be marked as not-dismissible, see
+ * {@link CardStreamLinearLayout#addCard(android.view.View, boolean)}.
+ */
+public class CardStreamFragment extends Fragment {
+
+    private static final int INITIAL_SIZE = 15;
+    private CardStreamLinearLayout mLayout = null;
+    private LinkedHashMap<String, Card> mVisibleCards = new LinkedHashMap<String, Card>(INITIAL_SIZE);
+    private HashMap<String, Card> mHiddenCards = new HashMap<String, Card>(INITIAL_SIZE);
+    private HashSet<String> mDismissibleCards = new HashSet<String>(INITIAL_SIZE);
+
+    // Set the listener to handle dismissed cards by moving them to the hidden cards map.
+    private CardStreamLinearLayout.OnDissmissListener mCardDismissListener =
+            new CardStreamLinearLayout.OnDissmissListener() {
+                @Override
+                public void onDismiss(String tag) {
+                    dismissCard(tag);
+                }
+            };
+
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+
+        View view = inflater.inflate(R.layout.cardstream, container, false);
+        mLayout = (CardStreamLinearLayout) view.findViewById(R.id.card_stream);
+        mLayout.setOnDismissListener(mCardDismissListener);
+
+        return view;
+    }
+
+    /**
+     * Add a visible, dismissible card to the card stream.
+     *
+     * @param card
+     */
+    public void addCard(Card card) {
+        final String tag = card.getTag();
+
+        if (!mVisibleCards.containsKey(tag) && !mHiddenCards.containsKey(tag)) {
+            final View view = card.getView();
+            view.setTag(tag);
+            mHiddenCards.put(tag, card);
+        }
+    }
+
+    /**
+     * Add and show a card.
+     *
+     * @param card
+     * @param show
+     */
+    public void addCard(Card card, boolean show) {
+        addCard(card);
+        if (show) {
+            showCard(card.getTag());
+        }
+    }
+
+    /**
+     * Remove a card and return true if it has been successfully removed.
+     *
+     * @param tag
+     * @return
+     */
+    public boolean removeCard(String tag) {
+        // Attempt to remove a visible card first
+        Card card = mVisibleCards.get(tag);
+        if (card != null) {
+            // Card is visible, also remove from layout
+            mVisibleCards.remove(tag);
+            mLayout.removeView(card.getView());
+            return true;
+        } else {
+            // Card is hidden, no need to remove from layout
+            card = mHiddenCards.remove(tag);
+            return card != null;
+        }
+    }
+
+    /**
+     * Show a dismissible card, returns false if the card could not be shown.
+     *
+     * @param tag
+     * @return
+     */
+    public boolean showCard(String tag) {
+        return showCard(tag, true);
+    }
+
+    /**
+     * Show a card, returns false if the card could not be shown.
+     *
+     * @param tag
+     * @param dismissible
+     * @return
+     */
+    public boolean showCard(String tag, boolean dismissible) {
+        final Card card = mHiddenCards.get(tag);
+        // ensure the card is hidden and not already visible
+        if (card != null && !mVisibleCards.containsValue(tag)) {
+            mHiddenCards.remove(tag);
+            mVisibleCards.put(tag, card);
+            mLayout.addCard(card.getView(), dismissible);
+            if (dismissible) {
+                mDismissibleCards.add(tag);
+            }
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * Hides the card, returns false if the card could not be hidden.
+     *
+     * @param tag
+     * @return
+     */
+    public boolean hideCard(String tag) {
+        final Card card = mVisibleCards.get(tag);
+        if (card != null) {
+            mVisibleCards.remove(tag);
+            mDismissibleCards.remove(tag);
+            mHiddenCards.put(tag, card);
+
+            mLayout.removeView(card.getView());
+            return true;
+        }
+        return mHiddenCards.containsValue(tag);
+    }
+
+
+    private void dismissCard(String tag) {
+        final Card card = mVisibleCards.get(tag);
+        if (card != null) {
+            mDismissibleCards.remove(tag);
+            mVisibleCards.remove(tag);
+            mHiddenCards.put(tag, card);
+        }
+    }
+
+
+    public boolean isCardVisible(String tag) {
+        return mVisibleCards.containsValue(tag);
+    }
+
+    /**
+     * Returns true if the card is shown and is dismissible.
+     *
+     * @param tag
+     * @return
+     */
+    public boolean isCardDismissible(String tag) {
+        return mDismissibleCards.contains(tag);
+    }
+
+    /**
+     * Returns the Card for this tag.
+     *
+     * @param tag
+     * @return
+     */
+    public Card getCard(String tag) {
+        final Card card = mVisibleCards.get(tag);
+        if (card != null) {
+            return card;
+        } else {
+            return mHiddenCards.get(tag);
+        }
+    }
+
+    /**
+     * Moves the view port to show the card with this tag.
+     *
+     * @param tag
+     * @see CardStreamLinearLayout#setFirstVisibleCard(String)
+     */
+    public void setFirstVisibleCard(String tag) {
+        final Card card = mVisibleCards.get(tag);
+        if (card != null) {
+            mLayout.setFirstVisibleCard(tag);
+        }
+    }
+
+    public int getVisibleCardCount() {
+        return mVisibleCards.size();
+    }
+
+    public Collection<Card> getVisibleCards() {
+        return mVisibleCards.values();
+    }
+
+    public void restoreState(CardStreamState state, OnCardClickListener callback) {
+        // restore hidden cards
+        for (Card c : state.hiddenCards) {
+            Card card = new Card.Builder(callback,c).build(getActivity());
+            mHiddenCards.put(card.getTag(), card);
+        }
+
+        // temporarily set up list of dismissible
+        final HashSet<String> dismissibleCards = state.dismissibleCards;
+
+        //restore shown cards
+        for (Card c : state.visibleCards) {
+            Card card = new Card.Builder(callback,c).build(getActivity());
+            addCard(card);
+            final String tag = card.getTag();
+            showCard(tag, dismissibleCards.contains(tag));
+        }
+
+        // move to first visible card
+        final String firstShown = state.shownTag;
+        if (firstShown != null) {
+            mLayout.setFirstVisibleCard(firstShown);
+        }
+
+        mLayout.triggerShowInitialAnimation();
+    }
+
+    public CardStreamState dumpState() {
+        final Card[] visible = cloneCards(mVisibleCards.values());
+        final Card[] hidden = cloneCards(mHiddenCards.values());
+        final HashSet<String> dismissible = new HashSet<String>(mDismissibleCards);
+        final String firstVisible = mLayout.getFirstVisibleCardTag();
+
+        return new CardStreamState(visible, hidden, dismissible, firstVisible);
+    }
+
+    private Card[] cloneCards(Collection<Card> cards) {
+        Card[] cardArray = new Card[cards.size()];
+        int i = 0;
+        for (Card c : cards) {
+            cardArray[i++] = c.createShallowClone();
+        }
+
+        return cardArray;
+    }
+
+}
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/CardStreamLinearLayout.java b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/CardStreamLinearLayout.java
new file mode 100644
index 0000000..aeab770
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/CardStreamLinearLayout.java
@@ -0,0 +1,569 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+
+
+package com.example.android.batchstepsensor;
+
+import android.animation.Animator;
+import android.animation.LayoutTransition;
+import android.animation.ObjectAnimator;
+import android.annotation.SuppressLint;
+import android.annotation.TargetApi;
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.graphics.Rect;
+import android.os.Build;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.ViewConfiguration;
+import android.view.ViewGroup;
+import android.view.ViewParent;
+import android.widget.LinearLayout;
+import android.widget.ScrollView;
+
+import com.example.android.common.logger.Log;
+
+import java.util.ArrayList;
+
+/**
+ * A Layout that contains a stream of card views.
+ */
+public class CardStreamLinearLayout extends LinearLayout {
+
+    public static final int ANIMATION_SPEED_SLOW = 1001;
+    public static final int ANIMATION_SPEED_NORMAL = 1002;
+    public static final int ANIMATION_SPEED_FAST = 1003;
+
+    private static final String TAG = "CardStreamLinearLayout";
+    private final ArrayList<View> mFixedViewList = new ArrayList<View>();
+    private final Rect mChildRect = new Rect();
+    private CardStreamAnimator mAnimators;
+    private OnDissmissListener mDismissListener = null;
+    private boolean mLayouted = false;
+    private boolean mSwiping = false;
+    private String mFirstVisibleCardTag = null;
+    private boolean mShowInitialAnimation = false;
+
+    /**
+     * Handle touch events to fade/move dragged items as they are swiped out
+     */
+    private OnTouchListener mTouchListener = new OnTouchListener() {
+
+        private float mDownX;
+        private float mDownY;
+
+        @Override
+        public boolean onTouch(final View v, MotionEvent event) {
+
+            switch (event.getAction()) {
+                case MotionEvent.ACTION_DOWN:
+                    mDownX = event.getX();
+                    mDownY = event.getY();
+                    break;
+                case MotionEvent.ACTION_CANCEL:
+                    resetAnimatedView(v);
+                    mSwiping = false;
+                    mDownX = 0.f;
+                    mDownY = 0.f;
+                    break;
+                case MotionEvent.ACTION_MOVE: {
+
+                    float x = event.getX() + v.getTranslationX();
+                    float y = event.getY() + v.getTranslationY();
+
+                    mDownX = mDownX == 0.f ? x : mDownX;
+                    mDownY = mDownY == 0.f ? x : mDownY;
+
+                    float deltaX = x - mDownX;
+                    float deltaY = y - mDownY;
+
+                    if (!mSwiping && isSwiping(deltaX, deltaY)) {
+                        mSwiping = true;
+                        v.getParent().requestDisallowInterceptTouchEvent(true);
+                    } else {
+                        swipeView(v, deltaX, deltaY);
+                    }
+                }
+                break;
+                case MotionEvent.ACTION_UP: {
+                    // User let go - figure out whether to animate the view out, or back into place
+                    if (mSwiping) {
+                        float x = event.getX() + v.getTranslationX();
+                        float y = event.getY() + v.getTranslationY();
+
+                        float deltaX = x - mDownX;
+                        float deltaY = y - mDownX;
+                        float deltaXAbs = Math.abs(deltaX);
+
+                        // User let go - figure out whether to animate the view out, or back into place
+                        boolean remove = deltaXAbs > v.getWidth() / 4 && !isFixedView(v);
+                        if( remove )
+                            handleViewSwipingOut(v, deltaX, deltaY);
+                        else
+                            handleViewSwipingIn(v, deltaX, deltaY);
+                    }
+                    mDownX = 0.f;
+                    mDownY = 0.f;
+                    mSwiping = false;
+                }
+                break;
+                default:
+                    return false;
+            }
+            return false;
+        }
+    };
+    private int mSwipeSlop = -1;
+    /**
+     * Handle end-transition animation event of each child and launch a following animation.
+     */
+    private LayoutTransition.TransitionListener mTransitionListener
+            = new LayoutTransition.TransitionListener() {
+
+        @Override
+        public void startTransition(LayoutTransition transition, ViewGroup container, View
+                view, int transitionType) {
+            Log.d(TAG, "Start LayoutTransition animation:" + transitionType);
+        }
+
+        @Override
+        public void endTransition(LayoutTransition transition, ViewGroup container,
+                                  final View view, int transitionType) {
+
+            Log.d(TAG, "End LayoutTransition animation:" + transitionType);
+            if (transitionType == LayoutTransition.APPEARING) {
+                final View area = view.findViewById(R.id.card_actionarea);
+                if (area != null) {
+                    runShowActionAreaAnimation(container, area);
+                }
+            }
+        }
+    };
+    /**
+     * Handle a hierarchy change event
+     * when a new child is added, scroll to bottom and hide action area..
+     */
+    private OnHierarchyChangeListener mOnHierarchyChangeListener
+            = new OnHierarchyChangeListener() {
+        @Override
+        public void onChildViewAdded(final View parent, final View child) {
+
+            Log.d(TAG, "child is added: " + child);
+
+            ViewParent scrollView = parent.getParent();
+            if (scrollView != null && scrollView instanceof ScrollView) {
+                ((ScrollView) scrollView).fullScroll(FOCUS_DOWN);
+            }
+
+            if (getLayoutTransition() != null) {
+                View view = child.findViewById(R.id.card_actionarea);
+                if (view != null)
+                    view.setAlpha(0.f);
+            }
+        }
+
+        @Override
+        public void onChildViewRemoved(View parent, View child) {
+            Log.d(TAG, "child is removed: " + child);
+            mFixedViewList.remove(child);
+        }
+    };
+    private int mLastDownX;
+
+    public CardStreamLinearLayout(Context context) {
+        super(context);
+        initialize(null, 0);
+    }
+
+    public CardStreamLinearLayout(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        initialize(attrs, 0);
+    }
+
+    @SuppressLint("NewApi")
+    public CardStreamLinearLayout(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+        initialize(attrs, defStyle);
+    }
+
+    /**
+     * add a card view w/ canDismiss flag.
+     *
+     * @param cardView   a card view
+     * @param canDismiss flag to indicate this card is dismissible or not.
+     */
+    public void addCard(View cardView, boolean canDismiss) {
+        if (cardView.getParent() == null) {
+            initCard(cardView, canDismiss);
+
+            ViewGroup.LayoutParams param = cardView.getLayoutParams();
+            if(param == null)
+                param = generateDefaultLayoutParams();
+
+            super.addView(cardView, -1, param);
+        }
+    }
+
+    @Override
+    public void addView(View child, int index, ViewGroup.LayoutParams params) {
+        if (child.getParent() == null) {
+            initCard(child, true);
+            super.addView(child, index, params);
+        }
+    }
+
+    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
+    @Override
+    protected void onLayout(boolean changed, int l, int t, int r, int b) {
+        super.onLayout(changed, l, t, r, b);
+        Log.d(TAG, "onLayout: " + changed);
+
+        if( changed && !mLayouted ){
+            mLayouted = true;
+
+            ObjectAnimator animator;
+            LayoutTransition layoutTransition = new LayoutTransition();
+
+            animator = mAnimators.getDisappearingAnimator(getContext());
+            layoutTransition.setAnimator(LayoutTransition.DISAPPEARING, animator);
+
+            animator = mAnimators.getAppearingAnimator(getContext());
+            layoutTransition.setAnimator(LayoutTransition.APPEARING, animator);
+
+            layoutTransition.addTransitionListener(mTransitionListener);
+
+            if( animator != null )
+                layoutTransition.setDuration(animator.getDuration());
+
+            setLayoutTransition(layoutTransition);
+
+            if( mShowInitialAnimation )
+                runInitialAnimations();
+
+            if (mFirstVisibleCardTag != null) {
+                scrollToCard(mFirstVisibleCardTag);
+                mFirstVisibleCardTag = null;
+            }
+        }
+    }
+
+    /**
+     * Check whether a user moved enough distance to start a swipe action or not.
+     *
+     * @param deltaX
+     * @param deltaY
+     * @return true if a user is swiping.
+     */
+    protected boolean isSwiping(float deltaX, float deltaY) {
+
+        if (mSwipeSlop < 0) {
+            //get swipping slop from ViewConfiguration;
+            mSwipeSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop();
+        }
+
+        boolean swipping = false;
+        float absDeltaX = Math.abs(deltaX);
+
+        if( absDeltaX > mSwipeSlop )
+            return true;
+
+        return swipping;
+    }
+
+    /**
+     * Swipe a view by moving distance
+     *
+     * @param child a target view
+     * @param deltaX x moving distance by x-axis.
+     * @param deltaY y moving distance by y-axis.
+     */
+    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
+    protected void swipeView(View child, float deltaX, float deltaY) {
+        if (isFixedView(child)){
+            deltaX = deltaX / 4;
+        }
+
+        float deltaXAbs = Math.abs(deltaX);
+        float fractionCovered = deltaXAbs / (float) child.getWidth();
+
+        child.setTranslationX(deltaX);
+        child.setAlpha(1.f - fractionCovered);
+
+        if (deltaX > 0)
+            child.setRotationY(-15.f * fractionCovered);
+        else
+            child.setRotationY(15.f * fractionCovered);
+    }
+
+    protected void notifyOnDismissEvent( View child ){
+        if( child == null || mDismissListener == null )
+            return;
+
+        mDismissListener.onDismiss((String) child.getTag());
+    }
+
+    /**
+     * get the tag of the first visible child in this layout
+     *
+     * @return tag of the first visible child or null
+     */
+    public String getFirstVisibleCardTag() {
+
+        final int count = getChildCount();
+
+        if (count == 0)
+            return null;
+
+        for (int index = 0; index < count; ++index) {
+            //check the position of each view.
+            View child = getChildAt(index);
+            if (child.getGlobalVisibleRect(mChildRect) == true)
+                return (String) child.getTag();
+        }
+
+        return null;
+    }
+
+    /**
+     * Set the first visible card of this linear layout.
+     *
+     * @param tag tag of a card which should already added to this layout.
+     */
+    public void setFirstVisibleCard(String tag) {
+        if (tag == null)
+            return; //do nothing.
+
+        if (mLayouted) {
+            scrollToCard(tag);
+        } else {
+            //keep the tag for next use.
+            mFirstVisibleCardTag = tag;
+        }
+    }
+
+    /**
+     * If this flag is set,
+     * after finishing initial onLayout event, an initial animation which is defined in DefaultCardStreamAnimator is launched.
+     */
+    public void triggerShowInitialAnimation(){
+        mShowInitialAnimation = true;
+    }
+
+    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
+    public void setCardStreamAnimator( CardStreamAnimator animators ){
+
+        if( animators == null )
+            mAnimators = new CardStreamAnimator.EmptyAnimator();
+        else
+            mAnimators = animators;
+
+        LayoutTransition layoutTransition = getLayoutTransition();
+
+        if( layoutTransition != null ){
+            layoutTransition.setAnimator( LayoutTransition.APPEARING,
+                    mAnimators.getAppearingAnimator(getContext()) );
+            layoutTransition.setAnimator( LayoutTransition.DISAPPEARING,
+                    mAnimators.getDisappearingAnimator(getContext()) );
+        }
+    }
+
+    /**
+     * set a OnDismissListener which called when user dismiss a card.
+     *
+     * @param listener
+     */
+    public void setOnDismissListener(OnDissmissListener listener) {
+        mDismissListener = listener;
+    }
+
+    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
+    private void initialize(AttributeSet attrs, int defStyle) {
+
+        float speedFactor = 1.f;
+
+        if (attrs != null) {
+            TypedArray a = getContext().obtainStyledAttributes(attrs,
+                    R.styleable.CardStream, defStyle, 0);
+
+            if( a != null ){
+                int speedType = a.getInt(R.styleable.CardStream_animationDuration, 1001);
+                switch (speedType){
+                    case ANIMATION_SPEED_FAST:
+                        speedFactor = 0.5f;
+                        break;
+                    case ANIMATION_SPEED_NORMAL:
+                        speedFactor = 1.f;
+                        break;
+                    case ANIMATION_SPEED_SLOW:
+                        speedFactor = 2.f;
+                        break;
+                }
+
+                String animatorName = a.getString(R.styleable.CardStream_animators);
+
+                try {
+                    if( animatorName != null )
+                        mAnimators = (CardStreamAnimator) getClass().getClassLoader()
+                                .loadClass(animatorName).newInstance();
+                } catch (Exception e) {
+                    Log.e(TAG, "Fail to load animator:" + animatorName, e);
+                } finally {
+                    if(mAnimators == null)
+                        mAnimators = new DefaultCardStreamAnimator();
+                }
+                a.recycle();
+            }
+        }
+
+        mAnimators.setSpeedFactor(speedFactor);
+        mSwipeSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop();
+        setOnHierarchyChangeListener(mOnHierarchyChangeListener);
+    }
+
+    private void initCard(View cardView, boolean canDismiss) {
+        resetAnimatedView(cardView);
+        cardView.setOnTouchListener(mTouchListener);
+        if (!canDismiss)
+            mFixedViewList.add(cardView);
+    }
+
+    private boolean isFixedView(View v) {
+        return mFixedViewList.contains(v);
+    }
+
+    private void resetAnimatedView(View child) {
+        child.setAlpha(1.f);
+        child.setTranslationX(0.f);
+        child.setTranslationY(0.f);
+        child.setRotation(0.f);
+        child.setRotationY(0.f);
+        child.setRotationX(0.f);
+        child.setScaleX(1.f);
+        child.setScaleY(1.f);
+    }
+
+    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
+    private void runInitialAnimations() {
+        if( mAnimators == null )
+            return;
+
+        final int count = getChildCount();
+
+        for (int index = 0; index < count; ++index) {
+            final View child = getChildAt(index);
+            ObjectAnimator animator =  mAnimators.getInitalAnimator(getContext());
+            if( animator != null ){
+                animator.setTarget(child);
+                animator.start();
+            }
+        }
+    }
+
+    private void runShowActionAreaAnimation(View parent, View area) {
+        area.setPivotY(0.f);
+        area.setPivotX(parent.getWidth() / 2.f);
+
+        area.setAlpha(0.5f);
+        area.setRotationX(-90.f);
+        area.animate().rotationX(0.f).alpha(1.f).setDuration(400);
+    }
+
+    private void handleViewSwipingOut(final View child, float deltaX, float deltaY) {
+        ObjectAnimator animator = mAnimators.getSwipeOutAnimator(child, deltaX, deltaY);
+        if( animator != null ){
+            animator.addListener(new EndAnimationWrapper() {
+                @Override
+                public void onAnimationEnd(Animator animation) {
+                    removeView(child);
+                    notifyOnDismissEvent(child);
+                }
+            });
+        } else {
+            removeView(child);
+            notifyOnDismissEvent(child);
+        }
+
+        if( animator != null ){
+            animator.setTarget(child);
+            animator.start();
+        }
+    }
+
+    private void handleViewSwipingIn(final View child, float deltaX, float deltaY) {
+        ObjectAnimator animator = mAnimators.getSwipeInAnimator(child, deltaX, deltaY);
+        if( animator != null ){
+            animator.addListener(new EndAnimationWrapper() {
+                @Override
+                public void onAnimationEnd(Animator animation) {
+                    child.setTranslationY(0.f);
+                    child.setTranslationX(0.f);
+                }
+            });
+        } else {
+            child.setTranslationY(0.f);
+            child.setTranslationX(0.f);
+        }
+
+        if( animator != null ){
+            animator.setTarget(child);
+            animator.start();
+        }
+    }
+
+    private void scrollToCard(String tag) {
+
+
+        final int count = getChildCount();
+        for (int index = 0; index < count; ++index) {
+            View child = getChildAt(index);
+
+            if (tag.equals(child.getTag())) {
+
+                ViewParent parent = getParent();
+                if( parent != null && parent instanceof ScrollView ){
+                    ((ScrollView)parent).smoothScrollTo(
+                            0, child.getTop() - getPaddingTop() - child.getPaddingTop());
+                }
+                return;
+            }
+        }
+    }
+
+    public interface OnDissmissListener {
+        public void onDismiss(String tag);
+    }
+
+    /**
+     * Empty default AnimationListener
+     */
+    private abstract class EndAnimationWrapper implements Animator.AnimatorListener {
+
+        @Override
+        public void onAnimationStart(Animator animation) {
+        }
+
+        @Override
+        public void onAnimationCancel(Animator animation) {
+        }
+
+        @Override
+        public void onAnimationRepeat(Animator animation) {
+        }
+    }//end of inner class
+}
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/CardStreamState.java b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/CardStreamState.java
new file mode 100644
index 0000000..08432a9
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/CardStreamState.java
@@ -0,0 +1,40 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+
+
+package com.example.android.batchstepsensor;
+
+import java.util.HashSet;
+
+/**
+ * A struct object that holds the state of a {@link CardStreamFragment}.
+ */
+class CardStreamState{
+    protected Card[] visibleCards;
+    protected Card[] hiddenCards;
+    protected HashSet<String> dismissibleCards;
+    protected String shownTag;
+
+    protected CardStreamState(Card[] visible, Card[] hidden, HashSet<String> dismissible, String shownTag) {
+        visibleCards = visible;
+        hiddenCards = hidden;
+        dismissibleCards = dismissible;
+        this.shownTag = shownTag;
+    }
+
+}
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/DefaultCardStreamAnimator.java b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/DefaultCardStreamAnimator.java
new file mode 100644
index 0000000..19ef43b
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/DefaultCardStreamAnimator.java
@@ -0,0 +1,124 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+
+
+package com.example.android.batchstepsensor;
+
+import android.animation.ObjectAnimator;
+import android.animation.PropertyValuesHolder;
+import android.annotation.TargetApi;
+import android.content.Context;
+import android.graphics.Point;
+import android.os.Build;
+import android.view.View;
+import android.view.WindowManager;
+import android.view.animation.BounceInterpolator;
+
+class DefaultCardStreamAnimator extends CardStreamAnimator {
+
+    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
+    @Override
+    public ObjectAnimator getDisappearingAnimator(Context context){
+
+        ObjectAnimator animator = ObjectAnimator.ofPropertyValuesHolder(new Object(),
+                PropertyValuesHolder.ofFloat("alpha", 1.f, 0.f),
+                PropertyValuesHolder.ofFloat("scaleX", 1.f, 0.f),
+                PropertyValuesHolder.ofFloat("scaleY", 1.f, 0.f),
+                PropertyValuesHolder.ofFloat("rotation", 0.f, 270.f));
+
+        animator.setDuration((long) (200 * mSpeedFactor));
+        return animator;
+    }
+
+    @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
+    @Override
+    public ObjectAnimator getAppearingAnimator(Context context){
+
+        final Point outPoint = new Point();
+        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
+        wm.getDefaultDisplay().getSize(outPoint);
+
+        ObjectAnimator animator = ObjectAnimator.ofPropertyValuesHolder(new Object(),
+                PropertyValuesHolder.ofFloat("alpha", 0.f, 1.f),
+                PropertyValuesHolder.ofFloat("translationY", outPoint.y / 2.f, 0.f),
+                PropertyValuesHolder.ofFloat("rotation", -45.f, 0.f));
+
+        animator.setDuration((long) (200 * mSpeedFactor));
+        return animator;
+    }
+
+    @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
+    @Override
+    public ObjectAnimator getInitalAnimator(Context context){
+
+        ObjectAnimator animator = ObjectAnimator.ofPropertyValuesHolder(new Object(),
+                PropertyValuesHolder.ofFloat("alpha", 0.5f, 1.f),
+                PropertyValuesHolder.ofFloat("rotation", 60.f, 0.f));
+
+        animator.setDuration((long) (200 * mSpeedFactor));
+        return animator;
+    }
+
+    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
+    @Override
+    public ObjectAnimator getSwipeInAnimator(View view, float deltaX, float deltaY){
+
+        float deltaXAbs = Math.abs(deltaX);
+
+        float fractionCovered = 1.f - (deltaXAbs / view.getWidth());
+        long duration = Math.abs((int) ((1 - fractionCovered) * 200 * mSpeedFactor));
+
+        // Animate position and alpha of swiped item
+
+        ObjectAnimator animator = ObjectAnimator.ofPropertyValuesHolder(view,
+                PropertyValuesHolder.ofFloat("alpha", 1.f),
+                PropertyValuesHolder.ofFloat("translationX", 0.f),
+                PropertyValuesHolder.ofFloat("rotationY", 0.f));
+
+        animator.setDuration(duration).setInterpolator(new BounceInterpolator());
+
+        return  animator;
+    }
+
+    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
+    @Override
+    public ObjectAnimator getSwipeOutAnimator(View view, float deltaX, float deltaY){
+
+        float endX;
+        float endRotationY;
+
+        float deltaXAbs = Math.abs(deltaX);
+
+        float fractionCovered = 1.f - (deltaXAbs / view.getWidth());
+        long duration = Math.abs((int) ((1 - fractionCovered) * 200 * mSpeedFactor));
+
+        endX = deltaX < 0 ? -view.getWidth() : view.getWidth();
+        if (deltaX > 0)
+            endRotationY = -15.f;
+        else
+            endRotationY = 15.f;
+
+        // Animate position and alpha of swiped item
+        return ObjectAnimator.ofPropertyValuesHolder(view,
+                PropertyValuesHolder.ofFloat("alpha", 0.f),
+                PropertyValuesHolder.ofFloat("translationX", endX),
+                PropertyValuesHolder.ofFloat("rotationY", endRotationY)).setDuration(duration);
+
+    }
+
+}
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/MainActivity.java b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/MainActivity.java
new file mode 100644
index 0000000..bb1f9a1
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/MainActivity.java
@@ -0,0 +1,91 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+
+package com.example.android.batchstepsensor;
+
+import android.os.Bundle;
+import android.support.v4.app.FragmentManager;
+import android.support.v4.app.FragmentTransaction;
+import android.view.Menu;
+
+import com.example.android.common.activities.SampleActivityBase;
+import com.example.android.common.logger.Log;
+
+public class MainActivity extends SampleActivityBase implements CardStream {
+    public static final String TAG = "MainActivity";
+    public static final String FRAGTAG = "BatchStepSensorFragment";
+
+    private CardStreamFragment mCardStreamFragment;
+
+    private StreamRetentionFragment mRetentionFragment;
+    private static final String RETENTION_TAG = "retention";
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        FragmentManager fm = getSupportFragmentManager();
+        BatchStepSensorFragment fragment =
+                (BatchStepSensorFragment) fm.findFragmentByTag(FRAGTAG);
+
+        if (fragment == null) {
+            FragmentTransaction transaction = fm.beginTransaction();
+            fragment = new BatchStepSensorFragment();
+            transaction.add(fragment, FRAGTAG);
+            transaction.commit();
+        }
+
+        // Use fragment as click listener for cards, but must implement correct interface
+        if(!(fragment instanceof OnCardClickListener)){
+            throw new ClassCastException("BatchStepSensorFragment must " +
+                    "implement OnCardClickListener interface.");
+        }
+        OnCardClickListener clickListener = (OnCardClickListener) fm.findFragmentByTag(FRAGTAG);
+
+        mRetentionFragment = (StreamRetentionFragment) fm.findFragmentByTag(RETENTION_TAG);
+        if (mRetentionFragment == null) {
+            mRetentionFragment = new StreamRetentionFragment();
+            fm.beginTransaction().add(mRetentionFragment, RETENTION_TAG).commit();
+        } else {
+            // If the retention fragment already existed, we need to pull some state.
+            // pull state out
+            CardStreamState state = mRetentionFragment.getCardStream();
+
+            // dump it in CardStreamFragment.
+            mCardStreamFragment =
+                    (CardStreamFragment) fm.findFragmentById(R.id.fragment_cardstream);
+            mCardStreamFragment.restoreState(state, clickListener);
+        }
+    }
+
+    public CardStreamFragment getCardStream() {
+        if (mCardStreamFragment == null) {
+            mCardStreamFragment = (CardStreamFragment)
+                    getSupportFragmentManager().findFragmentById(R.id.fragment_cardstream);
+        }
+        return mCardStreamFragment;
+    }
+
+    @Override
+    protected void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+        CardStreamState state = getCardStream().dumpState();
+        mRetentionFragment.storeCardStream(state);
+    }
+}
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/OnCardClickListener.java b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/OnCardClickListener.java
new file mode 100644
index 0000000..f024110
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/OnCardClickListener.java
@@ -0,0 +1,24 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+
+
+package com.example.android.batchstepsensor;
+
+public interface OnCardClickListener {
+    public void onCardClick(int cardActionId, String cardTag);
+}
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/StreamRetentionFragment.java b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/StreamRetentionFragment.java
new file mode 100644
index 0000000..7cd7f2b
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/batchstepsensor/StreamRetentionFragment.java
@@ -0,0 +1,41 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+
+package com.example.android.batchstepsensor;
+
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+
+public class StreamRetentionFragment extends Fragment {
+
+    CardStreamState mState;
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+        setRetainInstance(true);
+    }
+
+    public void storeCardStream(CardStreamState state) {
+        mState = state;
+    }
+
+    public CardStreamState getCardStream() {
+        return mState;
+    }
+}
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/common/activities/SampleActivityBase.java b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/common/activities/SampleActivityBase.java
new file mode 100644
index 0000000..3228927
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/common/activities/SampleActivityBase.java
@@ -0,0 +1,52 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+package com.example.android.common.activities;
+
+import android.os.Bundle;
+import android.support.v4.app.FragmentActivity;
+
+import com.example.android.common.logger.Log;
+import com.example.android.common.logger.LogWrapper;
+
+/**
+ * Base launcher activity, to handle most of the common plumbing for samples.
+ */
+public class SampleActivityBase extends FragmentActivity {
+
+    public static final String TAG = "SampleActivityBase";
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+    }
+
+    @Override
+    protected  void onStart() {
+        super.onStart();
+        initializeLogging();
+    }
+
+    /** Set up targets to receive log data */
+    public void initializeLogging() {
+        // Using Log, front-end to the logging chain, emulates android.util.log method signatures.
+        // Wraps Android's native log framework
+        LogWrapper logWrapper = new LogWrapper();
+        Log.setLogNode(logWrapper);
+
+        Log.i(TAG, "Ready");
+    }
+}
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/common/logger/Log.java b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/common/logger/Log.java
new file mode 100644
index 0000000..17503c5
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/common/logger/Log.java
@@ -0,0 +1,236 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Helper class for a list (or tree) of LoggerNodes.
+ *
+ * <p>When this is set as the head of the list,
+ * an instance of it can function as a drop-in replacement for {@link android.util.Log}.
+ * Most of the methods in this class server only to map a method call in Log to its equivalent
+ * in LogNode.</p>
+ */
+public class Log {
+    // Grabbing the native values from Android's native logging facilities,
+    // to make for easy migration and interop.
+    public static final int NONE = -1;
+    public static final int VERBOSE = android.util.Log.VERBOSE;
+    public static final int DEBUG = android.util.Log.DEBUG;
+    public static final int INFO = android.util.Log.INFO;
+    public static final int WARN = android.util.Log.WARN;
+    public static final int ERROR = android.util.Log.ERROR;
+    public static final int ASSERT = android.util.Log.ASSERT;
+
+    // Stores the beginning of the LogNode topology.
+    private static LogNode mLogNode;
+
+    /**
+     * Returns the next LogNode in the linked list.
+     */
+    public static LogNode getLogNode() {
+        return mLogNode;
+    }
+
+    /**
+     * Sets the LogNode data will be sent to.
+     */
+    public static void setLogNode(LogNode node) {
+        mLogNode = node;
+    }
+
+    /**
+     * Instructs the LogNode to print the log data provided. Other LogNodes can
+     * be chained to the end of the LogNode as desired.
+     *
+     * @param priority Log level of the data being logged. Verbose, Error, etc.
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void println(int priority, String tag, String msg, Throwable tr) {
+        if (mLogNode != null) {
+            mLogNode.println(priority, tag, msg, tr);
+        }
+    }
+
+    /**
+     * Instructs the LogNode to print the log data provided. Other LogNodes can
+     * be chained to the end of the LogNode as desired.
+     *
+     * @param priority Log level of the data being logged. Verbose, Error, etc.
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     */
+    public static void println(int priority, String tag, String msg) {
+        println(priority, tag, msg, null);
+    }
+
+   /**
+     * Prints a message at VERBOSE priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void v(String tag, String msg, Throwable tr) {
+        println(VERBOSE, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at VERBOSE priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void v(String tag, String msg) {
+        v(tag, msg, null);
+    }
+
+
+    /**
+     * Prints a message at DEBUG priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void d(String tag, String msg, Throwable tr) {
+        println(DEBUG, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at DEBUG priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void d(String tag, String msg) {
+        d(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at INFO priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void i(String tag, String msg, Throwable tr) {
+        println(INFO, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at INFO priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void i(String tag, String msg) {
+        i(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at WARN priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void w(String tag, String msg, Throwable tr) {
+        println(WARN, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at WARN priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void w(String tag, String msg) {
+        w(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at WARN priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void w(String tag, Throwable tr) {
+        w(tag, null, tr);
+    }
+
+    /**
+     * Prints a message at ERROR priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void e(String tag, String msg, Throwable tr) {
+        println(ERROR, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at ERROR priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void e(String tag, String msg) {
+        e(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at ASSERT priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void wtf(String tag, String msg, Throwable tr) {
+        println(ASSERT, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at ASSERT priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void wtf(String tag, String msg) {
+        wtf(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at ASSERT priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void wtf(String tag, Throwable tr) {
+        wtf(tag, null, tr);
+    }
+}
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/common/logger/LogFragment.java b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/common/logger/LogFragment.java
new file mode 100644
index 0000000..b302acd
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/common/logger/LogFragment.java
@@ -0,0 +1,109 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.common.logger;
+
+import android.graphics.Typeface;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.view.Gravity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ScrollView;
+
+/**
+ * Simple fraggment which contains a LogView and uses is to output log data it receives
+ * through the LogNode interface.
+ */
+public class LogFragment extends Fragment {
+
+    private LogView mLogView;
+    private ScrollView mScrollView;
+
+    public LogFragment() {}
+
+    public View inflateViews() {
+        mScrollView = new ScrollView(getActivity());
+        ViewGroup.LayoutParams scrollParams = new ViewGroup.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                ViewGroup.LayoutParams.MATCH_PARENT);
+        mScrollView.setLayoutParams(scrollParams);
+
+        mLogView = new LogView(getActivity());
+        ViewGroup.LayoutParams logParams = new ViewGroup.LayoutParams(scrollParams);
+        logParams.height = ViewGroup.LayoutParams.WRAP_CONTENT;
+        mLogView.setLayoutParams(logParams);
+        mLogView.setClickable(true);
+        mLogView.setFocusable(true);
+        mLogView.setTypeface(Typeface.MONOSPACE);
+
+        // Want to set padding as 16 dips, setPadding takes pixels.  Hooray math!
+        int paddingDips = 16;
+        double scale = getResources().getDisplayMetrics().density;
+        int paddingPixels = (int) ((paddingDips * (scale)) + .5);
+        mLogView.setPadding(paddingPixels, paddingPixels, paddingPixels, paddingPixels);
+        mLogView.setCompoundDrawablePadding(paddingPixels);
+
+        mLogView.setGravity(Gravity.BOTTOM);
+        mLogView.setTextAppearance(getActivity(), android.R.style.TextAppearance_Holo_Medium);
+
+        mScrollView.addView(mLogView);
+        return mScrollView;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+
+        View result = inflateViews();
+
+        mLogView.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {}
+
+            @Override
+            public void afterTextChanged(Editable s) {
+                mScrollView.fullScroll(ScrollView.FOCUS_DOWN);
+            }
+        });
+        return result;
+    }
+
+    public LogView getLogView() {
+        return mLogView;
+    }
+}
\ No newline at end of file
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/common/logger/LogNode.java b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/common/logger/LogNode.java
new file mode 100644
index 0000000..bc37cab
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/common/logger/LogNode.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Basic interface for a logging system that can output to one or more targets.
+ * Note that in addition to classes that will output these logs in some format,
+ * one can also implement this interface over a filter and insert that in the chain,
+ * such that no targets further down see certain data, or see manipulated forms of the data.
+ * You could, for instance, write a "ToHtmlLoggerNode" that just converted all the log data
+ * it received to HTML and sent it along to the next node in the chain, without printing it
+ * anywhere.
+ */
+public interface LogNode {
+
+    /**
+     * Instructs first LogNode in the list to print the log data provided.
+     * @param priority Log level of the data being logged.  Verbose, Error, etc.
+     * @param tag Tag for for the log data.  Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public void println(int priority, String tag, String msg, Throwable tr);
+
+}
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/common/logger/LogView.java b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/common/logger/LogView.java
new file mode 100644
index 0000000..c01542b
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/common/logger/LogView.java
@@ -0,0 +1,145 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+import android.app.Activity;
+import android.content.Context;
+import android.util.*;
+import android.widget.TextView;
+
+/** Simple TextView which is used to output log data received through the LogNode interface.
+*/
+public class LogView extends TextView implements LogNode {
+
+    public LogView(Context context) {
+        super(context);
+    }
+
+    public LogView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public LogView(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    /**
+     * Formats the log data and prints it out to the LogView.
+     * @param priority Log level of the data being logged.  Verbose, Error, etc.
+     * @param tag Tag for for the log data.  Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    @Override
+    public void println(int priority, String tag, String msg, Throwable tr) {
+
+        
+        String priorityStr = null;
+
+        // For the purposes of this View, we want to print the priority as readable text.
+        switch(priority) {
+            case android.util.Log.VERBOSE:
+                priorityStr = "VERBOSE";
+                break;
+            case android.util.Log.DEBUG:
+                priorityStr = "DEBUG";
+                break;
+            case android.util.Log.INFO:
+                priorityStr = "INFO";
+                break;
+            case android.util.Log.WARN:
+                priorityStr = "WARN";
+                break;
+            case android.util.Log.ERROR:
+                priorityStr = "ERROR";
+                break;
+            case android.util.Log.ASSERT:
+                priorityStr = "ASSERT";
+                break;
+            default:
+                break;
+        }
+
+        // Handily, the Log class has a facility for converting a stack trace into a usable string.
+        String exceptionStr = null;
+        if (tr != null) {
+            exceptionStr = android.util.Log.getStackTraceString(tr);
+        }
+
+        // Take the priority, tag, message, and exception, and concatenate as necessary
+        // into one usable line of text.
+        final StringBuilder outputBuilder = new StringBuilder();
+
+        String delimiter = "\t";
+        appendIfNotNull(outputBuilder, priorityStr, delimiter);
+        appendIfNotNull(outputBuilder, tag, delimiter);
+        appendIfNotNull(outputBuilder, msg, delimiter);
+        appendIfNotNull(outputBuilder, exceptionStr, delimiter);
+
+        // In case this was originally called from an AsyncTask or some other off-UI thread,
+        // make sure the update occurs within the UI thread.
+        ((Activity) getContext()).runOnUiThread( (new Thread(new Runnable() {
+            @Override
+            public void run() {
+                // Display the text we just generated within the LogView.
+                appendToLog(outputBuilder.toString());
+            }
+        })));
+
+        if (mNext != null) {
+            mNext.println(priority, tag, msg, tr);
+        }
+    }
+
+    public LogNode getNext() {
+        return mNext;
+    }
+
+    public void setNext(LogNode node) {
+        mNext = node;
+    }
+
+    /** Takes a string and adds to it, with a separator, if the bit to be added isn't null. Since
+     * the logger takes so many arguments that might be null, this method helps cut out some of the
+     * agonizing tedium of writing the same 3 lines over and over.
+     * @param source StringBuilder containing the text to append to.
+     * @param addStr The String to append
+     * @param delimiter The String to separate the source and appended strings. A tab or comma,
+     *                  for instance.
+     * @return The fully concatenated String as a StringBuilder
+     */
+    private StringBuilder appendIfNotNull(StringBuilder source, String addStr, String delimiter) {
+        if (addStr != null) {
+            if (addStr.length() == 0) {
+                delimiter = "";
+            }
+
+            return source.append(addStr).append(delimiter);
+        }
+        return source;
+    }
+
+    // The next LogNode in the chain.
+    LogNode mNext;
+
+    /** Outputs the string as a new line of log data in the LogView. */
+    public void appendToLog(String s) {
+        append("\n" + s);
+    }
+
+
+}
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/common/logger/LogWrapper.java b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/common/logger/LogWrapper.java
new file mode 100644
index 0000000..16a9e7b
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/common/logger/LogWrapper.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+import android.util.Log;
+
+/**
+ * Helper class which wraps Android's native Log utility in the Logger interface.  This way
+ * normal DDMS output can be one of the many targets receiving and outputting logs simultaneously.
+ */
+public class LogWrapper implements LogNode {
+
+    // For piping:  The next node to receive Log data after this one has done its work.
+    private LogNode mNext;
+
+    /**
+     * Returns the next LogNode in the linked list.
+     */
+    public LogNode getNext() {
+        return mNext;
+    }
+
+    /**
+     * Sets the LogNode data will be sent to..
+     */
+    public void setNext(LogNode node) {
+        mNext = node;
+    }
+
+    /**
+     * Prints data out to the console using Android's native log mechanism.
+     * @param priority Log level of the data being logged.  Verbose, Error, etc.
+     * @param tag Tag for for the log data.  Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    @Override
+    public void println(int priority, String tag, String msg, Throwable tr) {
+        // There actually are log methods that don't take a msg parameter.  For now,
+        // if that's the case, just convert null to the empty string and move on.
+        String useMsg = msg;
+        if (useMsg == null) {
+            useMsg = "";
+        }
+
+        // If an exeption was provided, convert that exception to a usable string and attach
+        // it to the end of the msg method.
+        if (tr != null) {
+            msg += "\n" + Log.getStackTraceString(tr);
+        }
+
+        // This is functionally identical to Log.x(tag, useMsg);
+        // For instance, if priority were Log.VERBOSE, this would be the same as Log.v(tag, useMsg)
+        Log.println(priority, tag, useMsg);
+
+        // If this isn't the last node in the chain, move things along.
+        if (mNext != null) {
+            mNext.println(priority, tag, msg, tr);
+        }
+    }
+}
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java
new file mode 100644
index 0000000..19967dc
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Simple {@link LogNode} filter, removes everything except the message.
+ * Useful for situations like on-screen log output where you don't want a lot of metadata displayed,
+ * just easy-to-read message updates as they're happening.
+ */
+public class MessageOnlyLogFilter implements LogNode {
+
+    LogNode mNext;
+
+    /**
+     * Takes the "next" LogNode as a parameter, to simplify chaining.
+     *
+     * @param next The next LogNode in the pipeline.
+     */
+    public MessageOnlyLogFilter(LogNode next) {
+        mNext = next;
+    }
+
+    public MessageOnlyLogFilter() {
+    }
+
+    @Override
+    public void println(int priority, String tag, String msg, Throwable tr) {
+        if (mNext != null) {
+            getNext().println(Log.NONE, null, msg, null);
+        }
+    }
+
+    /**
+     * Returns the next LogNode in the chain.
+     */
+    public LogNode getNext() {
+        return mNext;
+    }
+
+    /**
+     * Sets the LogNode data will be sent to..
+     */
+    public void setNext(LogNode node) {
+        mNext = node;
+    }
+
+}
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-hdpi/ic_action_cancel.png b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-hdpi/ic_action_cancel.png
new file mode 100644
index 0000000..f889617
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-hdpi/ic_action_cancel.png
Binary files differ
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-hdpi/ic_launcher.png b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-hdpi/ic_launcher.png
new file mode 100644
index 0000000..564742c
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-hdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-hdpi/tile.9.png b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-hdpi/tile.9.png
new file mode 100644
index 0000000..1358628
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-hdpi/tile.9.png
Binary files differ
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-mdpi/ic_action_cancel.png b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-mdpi/ic_action_cancel.png
new file mode 100644
index 0000000..d5a9384
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-mdpi/ic_action_cancel.png
Binary files differ
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-mdpi/ic_launcher.png b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-mdpi/ic_launcher.png
new file mode 100644
index 0000000..08abe57
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-mdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/card_bg.9.png b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/card_bg.9.png
new file mode 100644
index 0000000..23b30c1
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/card_bg.9.png
Binary files differ
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/ic_cardaction_negative.png b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/ic_cardaction_negative.png
new file mode 100644
index 0000000..1e6a64e
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/ic_cardaction_negative.png
Binary files differ
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/ic_cardaction_negative_pressed.png b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/ic_cardaction_negative_pressed.png
new file mode 100644
index 0000000..13c105e
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/ic_cardaction_negative_pressed.png
Binary files differ
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/ic_cardaction_neutral.png b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/ic_cardaction_neutral.png
new file mode 100644
index 0000000..f8874cd
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/ic_cardaction_neutral.png
Binary files differ
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/ic_cardaction_neutral_pressed.png b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/ic_cardaction_neutral_pressed.png
new file mode 100644
index 0000000..a8f5e67
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/ic_cardaction_neutral_pressed.png
Binary files differ
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/ic_cardaction_positive.png b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/ic_cardaction_positive.png
new file mode 100644
index 0000000..b0a68c3
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/ic_cardaction_positive.png
Binary files differ
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/ic_cardaction_positive_pressed.png b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/ic_cardaction_positive_pressed.png
new file mode 100644
index 0000000..528b5aa
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/ic_cardaction_positive_pressed.png
Binary files differ
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/ic_launcher.png b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/ic_launcher.png
new file mode 100644
index 0000000..15bafae
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xhdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xxhdpi/ic_action_cancel.png b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xxhdpi/ic_action_cancel.png
new file mode 100644
index 0000000..331c545
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xxhdpi/ic_action_cancel.png
Binary files differ
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xxhdpi/ic_launcher.png b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xxhdpi/ic_launcher.png
new file mode 100644
index 0000000..40bdd35
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable-xxhdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_bg.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_bg.xml
new file mode 100644
index 0000000..f86cf2f
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_bg.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@color/card_action" android:state_pressed="true" />
+    <item android:drawable="@color/card_action_focused" android:state_focused="true" />
+    <item android:drawable="@color/card_action_item_bg" />
+</selector>
\ No newline at end of file
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_bg_negative.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_bg_negative.xml
new file mode 100644
index 0000000..05d38ac
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_bg_negative.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@color/card_action_negative" android:state_pressed="true" />
+    <item android:drawable="@color/card_action_negative_focused" android:state_focused="true" />
+    <item android:drawable="@color/card_action_item_bg" />
+</selector>
\ No newline at end of file
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_bg_positive.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_bg_positive.xml
new file mode 100644
index 0000000..4e92f24
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_bg_positive.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@color/card_action_positive" android:state_pressed="true" />
+    <item android:drawable="@color/card_action_positive_focused" android:state_focused="true" />
+    <item android:drawable="@color/card_action_item_bg" />
+</selector>
\ No newline at end of file
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_icon_negative.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_icon_negative.xml
new file mode 100644
index 0000000..6a797dc
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_icon_negative.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@drawable/ic_cardaction_negative_pressed" android:state_pressed="true" />
+    <item android:drawable="@drawable/ic_cardaction_negative" />
+</selector>
\ No newline at end of file
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_icon_neutral.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_icon_neutral.xml
new file mode 100644
index 0000000..73e9214
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_icon_neutral.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@drawable/ic_cardaction_neutral_pressed" android:state_pressed="true" />
+    <item android:drawable="@drawable/ic_cardaction_neutral" />
+</selector>
\ No newline at end of file
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_icon_positive.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_icon_positive.xml
new file mode 100644
index 0000000..63f82d6
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_icon_positive.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@drawable/ic_cardaction_positive_pressed" android:state_pressed="true" />
+    <item android:drawable="@drawable/ic_cardaction_positive" />
+</selector>
\ No newline at end of file
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_text.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_text.xml
new file mode 100644
index 0000000..cddf5cd
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_text.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_pressed="true" android:color="@color/card_action_inverted" />
+    <item android:state_focused="true" android:color="@color/card_action_inverted" />
+    <item android:color="@color/card_action" />
+</selector>
\ No newline at end of file
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_text_negative.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_text_negative.xml
new file mode 100644
index 0000000..90f2c05
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_text_negative.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_pressed="true" android:color="@color/card_action_inverted"/>
+    <item android:state_focused="true" android:color="@color/card_action_inverted"/>
+    <item android:color="@color/card_action_negative"/>
+</selector>
\ No newline at end of file
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_text_positive.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_text_positive.xml
new file mode 100644
index 0000000..c3ff402
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_action_text_positive.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_pressed="true" android:color="@color/card_action_inverted"/>
+    <item android:state_focused="true" android:color="@color/card_action_inverted"/>
+    <item android:color="@color/card_action_positive"/>
+</selector>
\ No newline at end of file
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_overlay_focused.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_overlay_focused.xml
new file mode 100644
index 0000000..787167d
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_overlay_focused.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+       android:shape="rectangle">
+    <stroke
+        android:width="5dp"
+        android:color="#aa99CC00"/>
+</shape>
\ No newline at end of file
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_separator.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_separator.xml
new file mode 100644
index 0000000..6bb5630
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/drawable/card_separator.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="line">
+    <stroke android:color="#CCC" />
+    <size android:height="1dp" />
+</shape>
\ No newline at end of file
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/activity_main.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/activity_main.xml
new file mode 100755
index 0000000..b8a123e
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/activity_main.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+
+
+<fragment
+    android:id="@+id/fragment_cardstream"
+    android:name="com.example.android.batchstepsensor.CardStreamFragment"
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity"
+    tools:layout="@layout/cardstream"/>
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/card.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/card.xml
new file mode 100644
index 0000000..24bffeb
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/card.xml
@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+
+
+<com.example.android.batchstepsensor.CardLayout
+    android:id="@+id/card_layout"
+    style="@style/Card"
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <LinearLayout
+        android:id="@+id/card_actionarea"
+        android:layout_width="fill_parent"
+        android:layout_height="wrap_content"
+        android:layout_below="@+id/card_contentarea"
+        android:background="@color/card_action_bg"
+        android:orientation="vertical"
+        android:paddingBottom="@dimen/card_action_margin"
+        android:visibility="gone"
+        >
+        <include layout="@layout/card_button_seperator"/>
+    </LinearLayout>
+
+
+    <LinearLayout
+        android:id="@id/card_contentarea"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        style="@style/CardContentArea">
+
+        <TextView
+            android:id="@+id/card_title"
+            style="@style/CardTitle"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"/>
+
+        <TextView
+            android:id="@+id/card_content"
+            style="@style/CardContent"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_below="@id/card_title"/>
+
+    </LinearLayout>
+
+    <View
+        android:id="@+id/card_overlay"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_alignBottom="@id/card_contentarea"
+        android:layout_alignLeft="@id/card_contentarea"
+        android:layout_alignRight="@id/card_contentarea"
+        android:layout_alignTop="@id/card_contentarea"
+        android:layout_alignWithParentIfMissing="false"
+        android:visibility="invisible"/>
+
+</com.example.android.batchstepsensor.CardLayout>
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/card_button_negative.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/card_button_negative.xml
new file mode 100644
index 0000000..bf66150
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/card_button_negative.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+
+
+<com.example.android.batchstepsensor.CardActionButton xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/card_button"
+    style="@style/CardActionNegative"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:gravity="center_vertical" />
\ No newline at end of file
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/card_button_neutral.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/card_button_neutral.xml
new file mode 100644
index 0000000..7f759fc
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/card_button_neutral.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+
+
+<com.example.android.batchstepsensor.CardActionButton xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/card_button"
+    style="@style/CardActionNeutral"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:gravity="center_vertical" />
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/card_button_positive.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/card_button_positive.xml
new file mode 100644
index 0000000..2011f9c
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/card_button_positive.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+
+
+<com.example.android.batchstepsensor.CardActionButton xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/card_button"
+    style="@style/CardActionPositive"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:gravity="center_vertical" />
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/card_button_seperator.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/card_button_seperator.xml
new file mode 100644
index 0000000..6731242
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/card_button_seperator.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<merge xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <ImageView
+        android:id="@+id/card_separator"
+        android:layout_width="fill_parent"
+        android:layout_height="wrap_content"
+        android:src="@drawable/card_separator" />
+
+</merge>
\ No newline at end of file
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/card_progress.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/card_progress.xml
new file mode 100644
index 0000000..1bf349f
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/card_progress.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    style="@style/CardProgressLayout">
+
+    <TextView
+        android:id="@+id/card_progress_text"
+        style="@style/CardProgressText"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        />
+
+    <ProgressBar
+        android:id="@+id/card_progress"
+        style="@android:style/Widget.Holo.ProgressBar.Horizontal"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        />
+
+</LinearLayout>
\ No newline at end of file
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/cardstream.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/cardstream.xml
new file mode 100644
index 0000000..463af5c
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/layout/cardstream.xml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+
+
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:fillViewport="true">
+
+    <com.example.android.batchstepsensor.CardStreamLinearLayout
+        style="@style/CardStream"
+        android:id="@+id/card_stream"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+    </com.example.android.batchstepsensor.CardStreamLinearLayout>
+</ScrollView>
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values-sw600dp/template-dimens.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values-sw600dp/template-dimens.xml
new file mode 100644
index 0000000..22074a2
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values-sw600dp/template-dimens.xml
@@ -0,0 +1,24 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <!-- Semantic definitions -->
+
+    <dimen name="horizontal_page_margin">@dimen/margin_huge</dimen>
+    <dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
+
+</resources>
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values-sw600dp/template-styles.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values-sw600dp/template-styles.xml
new file mode 100644
index 0000000..03d1974
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values-sw600dp/template-styles.xml
@@ -0,0 +1,25 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <style name="Widget.SampleMessage">
+        <item name="android:textAppearance">?android:textAppearanceLarge</item>
+        <item name="android:lineSpacingMultiplier">1.2</item>
+        <item name="android:shadowDy">-6.5</item>
+    </style>
+
+</resources>
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values-sw720dp-land/dimens.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values-sw720dp-land/dimens.xml
new file mode 100644
index 0000000..00059fc
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values-sw720dp-land/dimens.xml
@@ -0,0 +1,5 @@
+<resources>
+    <!-- Customize dimensions originally defined in res/values/dimens.xml (such as
+         screen margins) for sw720dp devices (e.g. 10" tablets) in landscape here. -->
+    <dimen name="activity_horizontal_margin">128dp</dimen>
+</resources>
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values-v11/styles.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values-v11/styles.xml
new file mode 100644
index 0000000..3c02242
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values-v11/styles.xml
@@ -0,0 +1,11 @@
+<resources>
+
+    <!--
+        Base application theme for API 11+. This theme completely replaces
+        AppBaseTheme from res/values/styles.xml on API 11+ devices.
+    -->
+    <style name="AppBaseTheme" parent="android:Theme.Holo.Light">
+        <!-- API 11 theme customizations can go here. -->
+    </style>
+
+</resources>
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values-v14/styles.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values-v14/styles.xml
new file mode 100644
index 0000000..a91fd03
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values-v14/styles.xml
@@ -0,0 +1,12 @@
+<resources>
+
+    <!--
+        Base application theme for API 14+. This theme completely replaces
+        AppBaseTheme from BOTH res/values/styles.xml and
+        res/values-v11/styles.xml on API 14+ devices.
+    -->
+    <style name="AppBaseTheme" parent="android:Theme.Holo.Light.DarkActionBar">
+        <!-- API 14 theme customizations can go here. -->
+    </style>
+
+</resources>
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values-v16/styles.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values-v16/styles.xml
new file mode 100644
index 0000000..2b380aa
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values-v16/styles.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <style name="CardTitle" parent="@style/CardTitleBase">
+        <item name="android:fontFamily">sans-serif-condensed</item>
+    </style>
+
+    <style name="CardContent" parent="@style/CardContentBase">
+        <item name="android:fontFamily">sans-serif-light</item>
+    </style>
+</resources>
\ No newline at end of file
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/attrs.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/attrs.xml
new file mode 100644
index 0000000..16b5260
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/attrs.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <declare-styleable name="CardStream">
+        <attr name="animationDuration" format="enum">
+            <enum name="slow" value="1001"/>
+            <enum name="normal" value="1002"/>
+            <enum name="fast" value="1003"/>
+        </attr>
+        <attr name="animators" format="string"/>
+    </declare-styleable>
+
+
+</resources>
\ No newline at end of file
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/base-strings.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/base-strings.xml
new file mode 100644
index 0000000..341b6bc
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/base-strings.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+
+
+<resources>
+    <string name="app_name">BatchStepSensor</string>
+    <string name="intro_message">
+        <![CDATA[
+        
+            
+            This sample demonstrates the use of the two step sensors (step detector and counter) and
+            sensor batching.\n\n It shows how to register a SensorEventListener with and without
+            batching and shows how these events are received.\n\nThe Step Detector sensor fires an
+            event when a step is detected, while the step counter returns the total number of
+            steps since a listener was first registered for this sensor.
+            Both sensors only count steps while a listener is registered. This sample only covers the
+            basic case, where a listener is only registered while the app is running. Likewise,
+            batched sensors can be used in the background (when the CPU is suspended), which
+            requires manually flushing the sensor event queue before it overflows, which is not
+            covered in this sample.
+            
+        
+        ]]>
+    </string>
+</resources>
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/color.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/color.xml
new file mode 100644
index 0000000..98717d8
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/color.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <color name="card_action_inverted">@android:color/white</color>
+
+    <color name="card_content_textcolor">#444</color>
+
+    <color name="card_action_bg">#DDD</color>
+    <color name="card_action_item_bg">#F4F4F4</color>
+
+    <!-- Neutral Actions -->
+    <color name="card_action_focused">#FFE3F4FC</color>
+    <color name="card_action">#FF47B4EA</color>
+
+    <!-- Negative Actions -->
+    <color name="card_action_negative_focused">#FFFBCBCA</color>
+    <color name="card_action_negative">#FFF64940</color>
+
+    <!-- Positive Actions -->
+    <color name="card_action_positive_focused">#FFE4F0AF</color>
+    <color name="card_action_positive">#FFA0CC00</color>
+</resources>
\ No newline at end of file
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/dimens.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/dimens.xml
new file mode 100644
index 0000000..b025f1f
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/dimens.xml
@@ -0,0 +1,14 @@
+<resources>
+
+    <dimen name="card_content_text">14sp</dimen>
+    <dimen name="card_content_title">24sp</dimen>
+
+    <dimen name="card_padding">15dp</dimen>
+    <dimen name="card_margin">10dp</dimen>
+
+    <dimen name="card_action_margin">3dp</dimen>
+    <dimen name="card_action_padding">8dp</dimen>
+
+    <dimen name="card_stream_bottom_padding">90dp</dimen>
+
+</resources>
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/ids.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/ids.xml
new file mode 100644
index 0000000..c5d1b78
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/ids.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <item name="card_layout" type="id"/>
+    <item name="card_actionarea" type="id"/>
+    <item name="card_contentarea" type="id"/>
+    <item name="card_title" type="id"/>
+    <item name="card_content" type="id"/>
+    <item name="card_overlay" type="id"/>
+</resources>
\ No newline at end of file
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/strings.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/strings.xml
new file mode 100644
index 0000000..9c0a8ad
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/strings.xml
@@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ Copyright 2014 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<resources>
+    <string name="intro_title">Introduction</string>
+
+    <string name="batching_queue_title">Background sensor batching</string>
+    <string name="batching_queue_description">Batching allows the sensor to report sensor events at
+        a specified frequency.\n\nThe system delays calls to the SensorEventListener and deliver
+        them in intervals, based on the maximum report latency specified when the listener is
+        registered. Note that this only means that the call to onSensorChanged() is delayed, the
+        total number of calls is identical as if no batching was used. Sensors only deliver events
+        while the CPU is awake. If the CPU is asleep and a batched sensor event listener is still
+        registered, the sensor will continue to collect events until it runs out of memory and
+        overwrites old values. This use case is not covered by this sample. (The sensor event queue
+        should be flushed using a scheduled background thread.) \n\nIn this sample app data is only
+        collected while the app is running and the CPU is awake. In this case the sensor will
+        deliver events before the queue fills up.
+    </string>
+
+    <string name="explanation_description">The age of a sensor event describes the delay between
+        when it was recorded by the sensor until it was delivered to the SensorEventListener.
+    </string>
+
+    <string name="register_detector_title">Register step detector sensor</string>
+    <string name="register_detector_description">Register a listener for the STEP DETECTOR
+        sensor.\n\nThis sensor delivers an event when the user takes a step. One event is received
+        per step.
+    </string>
+
+    <string name="register_counter_title">Register step counter sensor</string>
+    <string name="register_counter_description">Register a listener for the STEP COUNTER
+        sensor.\n\nThis sensor triggers events when a step is detected, but applies algorithms to
+        filter out false positives. Events from this sensor have higher latency than the step
+        detector and contain the total number of steps taken since the sensor was first registered.
+    </string>
+
+    <string name="register_0">No batching (delay=0)</string>
+    <string name="register_5">5s batching (delay=5000ms)</string>
+    <string name="register_10">10s batching (delay=10000ms)</string>
+
+    <string name="counting_title">Total Steps: %1$d</string>
+    <string name="sensor_counter">Step Counter</string>
+    <string name="sensor_detector">Step Detector</string>
+    <string name="counting_description">Sensor: %1$s\nMax sensor event delay: %2$,d \u00B5s\nAge of
+        events in s:\n%3$s
+    </string>
+
+    <string name="error_title">Error</string>
+    <string name="error_nosensor">This sample requires at least Android KitKat (4.4) and a device
+        with the step sensor.\n\nThis device does not appear to meet these requirements, as an
+        alternative you may want to consider using the gyro sensor and implement your own step
+        recognition as a fallback.
+    </string>
+    <string name="warning_nobatching">The listener has been registered, but batch mode could not be
+        enabled.\n\nIt is likely that it is not supported by this device.\n\nSensor events will be
+        delivered in continuous mode.
+    </string>
+
+    <string name="action_notagain">Do not show again</string>
+</resources>
\ No newline at end of file
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/styles.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/styles.xml
new file mode 100644
index 0000000..23e8181
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/styles.xml
@@ -0,0 +1,92 @@
+<resources>
+
+    <!-- Card Stream -->
+    <style name="CardStream">
+        <item name="android:paddingBottom">@dimen/card_stream_bottom_padding</item>
+        <item name="android:divider">@null</item>
+        <item name="android:orientation">vertical</item>
+    </style>
+
+    <!-- Main card -->
+    <style name="Card">
+        <item name="android:background">@drawable/card_bg</item>
+        <item name="android:layout_margin">@dimen/card_margin</item>
+    </style>
+
+    <style name="CardContentArea">
+        <item name="android:paddingBottom">@dimen/card_padding</item>
+    </style>
+
+    <style name="CardActionArea">
+        <item name="android:background">@color/card_action_bg</item>
+        <item name="android:orientation">vertical</item>
+        <item name="android:paddingBottom">@dimen/card_action_margin</item>
+    </style>
+
+    <style name="CardElement">
+        <item name="android:paddingLeft">@dimen/card_padding</item>
+        <item name="android:paddingRight">@dimen/card_padding</item>
+    </style>
+
+    <!-- Content of main card -->
+    <style name="CardTitleBase" parent="@style/CardElement">
+        <item name="android:paddingTop">@dimen/card_padding</item>
+        <item name="android:textSize">@dimen/card_content_title</item>
+    </style>
+
+    <style name="CardTitle" parent="@style/CardTitleBase">
+    </style>
+
+    <style name="CardContentBase" parent="@style/CardElement">
+        <item name="android:paddingTop">@dimen/card_padding</item>
+        <item name="android:textSize">@dimen/card_content_text</item>
+        <item name="android:textColor">@color/card_content_textcolor</item>
+    </style>
+
+    <style name="CardContent" parent="@style/CardContentBase">
+    </style>
+
+    <!-- Action Area Items -->
+    <style name="CardAction">
+        <item name="android:textSize">17sp</item>
+        <item name="android:layout_marginTop">@dimen/card_action_margin</item>
+        <item name="android:layout_marginLeft">@dimen/card_action_margin</item>
+        <item name="android:layout_marginRight">@dimen/card_action_margin</item>
+        <item name="android:paddingLeft">@dimen/card_action_padding</item>
+        <item name="android:drawablePadding">@dimen/card_action_padding</item>
+    </style>
+
+    <style name="CardActionNeutral" parent="@style/CardAction">
+        <item name="android:background">@drawable/card_action_bg</item>
+        <item name="android:drawableStart">@drawable/card_action_icon_neutral</item>
+        <item name="android:textColor">@drawable/card_action_text</item>
+    </style>
+
+    <style name="CardActionNegative" parent="@style/CardAction">
+        <item name="android:background">@drawable/card_action_bg_negative</item>
+        <item name="android:drawableStart">@drawable/card_action_icon_negative</item>
+        <item name="android:textColor">@drawable/card_action_text_negative</item>
+    </style>
+
+    <style name="CardActionPositive" parent="@style/CardAction">
+        <item name="android:background">@drawable/card_action_bg_positive</item>
+        <item name="android:drawableStart">@drawable/card_action_icon_positive</item>
+        <item name="android:textColor">@drawable/card_action_text_positive</item>
+    </style>
+
+    <!-- Card Action Progress -->
+    <style name="CardProgressLayout" parent="@style/CardAction">
+        <item name="android:layout_marginLeft">@dimen/card_action_margin</item>
+        <item name="android:layout_marginRight">@dimen/card_action_margin</item>
+        <item name="android:paddingLeft">@dimen/card_action_padding</item>
+        <item name="android:paddingRight">@dimen/card_action_padding</item>
+        <item name="android:background">#EEE</item>
+    </style>
+
+    <style name="CardProgressText" parent="@style/CardAction">
+        <item name="android:textColor">#77000000</item>
+        <item name="android:textSize">12sp</item>
+        <item name="android:paddingLeft">0dp</item>
+    </style>
+
+</resources>
\ No newline at end of file
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/template-dimens.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/template-dimens.xml
new file mode 100644
index 0000000..39e710b
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/template-dimens.xml
@@ -0,0 +1,32 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <!-- Define standard dimensions to comply with Holo-style grids and rhythm. -->
+
+    <dimen name="margin_tiny">4dp</dimen>
+    <dimen name="margin_small">8dp</dimen>
+    <dimen name="margin_medium">16dp</dimen>
+    <dimen name="margin_large">32dp</dimen>
+    <dimen name="margin_huge">64dp</dimen>
+
+    <!-- Semantic definitions -->
+
+    <dimen name="horizontal_page_margin">@dimen/margin_medium</dimen>
+    <dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
+
+</resources>
diff --git a/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/template-styles.xml b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/template-styles.xml
new file mode 100644
index 0000000..404623e
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/BatchStepSensorSample/src/main/res/values/template-styles.xml
@@ -0,0 +1,42 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <!-- Activity themes -->
+
+    <style name="Theme.Base" parent="android:Theme.Holo.Light" />
+
+    <style name="Theme.Sample" parent="Theme.Base" />
+
+    <style name="AppTheme" parent="Theme.Sample" />
+    <!-- Widget styling -->
+
+    <style name="Widget" />
+
+    <style name="Widget.SampleMessage">
+        <item name="android:textAppearance">?android:textAppearanceMedium</item>
+        <item name="android:lineSpacingMultiplier">1.1</item>
+    </style>
+
+    <style name="Widget.SampleMessageTile">
+        <item name="android:background">@drawable/tile</item>
+        <item name="android:shadowColor">#7F000000</item>
+        <item name="android:shadowDy">-3.5</item>
+        <item name="android:shadowRadius">2</item>
+    </style>
+
+</resources>
diff --git a/prebuilts/gradle/BatchStepSensor/README.txt b/prebuilts/gradle/BatchStepSensor/README.txt
new file mode 100644
index 0000000..9616c58
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/README.txt
@@ -0,0 +1,18 @@
+Build Instructions
+-------------------
+
+This sample uses the Gradle build system. To build this project, use the
+"gradlew build" command or use "Import Project" in Android Studio.
+
+To see a list of all available commands, run "gradlew tasks".
+
+Dependencies
+-------------
+
+- Android SDK Build-tools v18.1
+- Android Support Repository v2
+
+Dependencies are available for download via the Android SDK Manager.
+
+Android Studio is available for download at:
+    http://developer.android.com/sdk/installing/studio.html
diff --git a/prebuilts/gradle/BatchStepSensor/build.gradle b/prebuilts/gradle/BatchStepSensor/build.gradle
new file mode 100644
index 0000000..5cf5d3d
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/build.gradle
@@ -0,0 +1,14 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/prebuilts/gradle/BatchStepSensor/gradle/wrapper/gradle-wrapper.jar b/prebuilts/gradle/BatchStepSensor/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..8c0fb64
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/gradle/wrapper/gradle-wrapper.jar
Binary files differ
diff --git a/prebuilts/gradle/BatchStepSensor/gradle/wrapper/gradle-wrapper.properties b/prebuilts/gradle/BatchStepSensor/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..56f685a
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Wed Apr 10 15:27:10 PDT 2013
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=http\://services.gradle.org/distributions/gradle-1.10-bin.zip
diff --git a/prebuilts/gradle/BatchStepSensor/gradlew b/prebuilts/gradle/BatchStepSensor/gradlew
new file mode 100755
index 0000000..91a7e26
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/gradlew
@@ -0,0 +1,164 @@
+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+esac
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched.
+if $cygwin ; then
+    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+fi
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >&-
+APP_HOME="`pwd -P`"
+cd "$SAVED" >&-
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+    JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
diff --git a/prebuilts/gradle/BatchStepSensor/gradlew.bat b/prebuilts/gradle/BatchStepSensor/gradlew.bat
new file mode 100644
index 0000000..aec9973
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/gradlew.bat
@@ -0,0 +1,90 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windowz variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+if "%@eval[2+2]" == "4" goto 4NT_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+goto execute
+
+:4NT_args
+@rem Get arguments from the 4NT Shell from JP Software
+set CMD_LINE_ARGS=%$
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/prebuilts/gradle/BatchStepSensor/settings.gradle b/prebuilts/gradle/BatchStepSensor/settings.gradle
new file mode 100644
index 0000000..18ebefc
--- /dev/null
+++ b/prebuilts/gradle/BatchStepSensor/settings.gradle
@@ -0,0 +1,4 @@
+
+
+
+include 'BatchStepSensorSample'
diff --git a/prebuilts/gradle/BluetoothLeGatt/BluetoothLeGattSample/build.gradle b/prebuilts/gradle/BluetoothLeGatt/BluetoothLeGattSample/build.gradle
index b3b385a..7bfc9ad 100644
--- a/prebuilts/gradle/BluetoothLeGatt/BluetoothLeGattSample/build.gradle
+++ b/prebuilts/gradle/BluetoothLeGatt/BluetoothLeGattSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,7 +15,7 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 18
-    compile "com.android.support:support-v13:18.0.+"
+    compile "com.android.support:support-v13:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -28,7 +28,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/BorderlessButtons/BorderlessButtonsSample/build.gradle b/prebuilts/gradle/BorderlessButtons/BorderlessButtonsSample/build.gradle
index a36923c..506795f 100644
--- a/prebuilts/gradle/BorderlessButtons/BorderlessButtonsSample/build.gradle
+++ b/prebuilts/gradle/BorderlessButtons/BorderlessButtonsSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,7 +15,7 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 14
-    compile "com.android.support:support-v13:18.0.+"
+    compile "com.android.support:support-v13:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -28,7 +28,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/build.gradle b/prebuilts/gradle/CardEmulation/CardEmulationSample/build.gradle
new file mode 100644
index 0000000..f73b206
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/build.gradle
@@ -0,0 +1,58 @@
+
+
+
+buildscript {
+    repositories {
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:0.8.+'
+    }
+}
+
+apply plugin: 'android'
+
+dependencies {
+    // Add the support lib that is appropriate for SDK 19
+    compile "com.android.support:support-v13:19.0.+"
+}
+
+// The sample build uses multiple directories to
+// keep boilerplate and common code separate from
+// the main sample code.
+List<String> dirs = [
+    'main',     // main sample code; look here for the interesting stuff.
+    'common',   // components that are reused by multiple samples
+    'template'] // boilerplate code that is generated by the sample template process
+
+android {
+    compileSdkVersion 19
+    buildToolsVersion "19.0.1"
+
+    sourceSets {
+        main {
+            dirs.each { dir ->
+                java.srcDirs "src/${dir}/java"
+                res.srcDirs "src/${dir}/res"
+            }
+        }
+        instrumentTest.setRoot('tests')
+        instrumentTest.java.srcDirs = ['tests/src']
+    }
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/AndroidManifest.xml b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..4a4af08
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/AndroidManifest.xml
@@ -0,0 +1,61 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.android.cardemulation"
+    android:versionCode="1"
+    android:versionName="1.0">
+
+    <!-- Card emulation was introduced in API 19. -->
+    <uses-sdk android:minSdkVersion="19" android:targetSdkVersion="19" />
+    <uses-feature android:name="android.hardware.nfc.hce" android:required="true" />
+    <uses-permission android:name="android.permission.NFC" />
+
+    <application android:allowBackup="true"
+        android:label="@string/app_name"
+        android:icon="@drawable/ic_launcher"
+        android:theme="@style/AppTheme">
+
+        <!-- Basic UI for sample discoverability. -->
+        <activity android:name=".MainActivity"
+                  android:label="@string/app_name">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+        <!-- BEGIN_INCLUDE(CardEmulationManifest) -->
+        <!-- Service for handling communication with NFC terminal. -->
+        <service android:name=".CardService"
+                 android:exported="true"
+                 android:permission="android.permission.BIND_NFC_SERVICE">
+            <!-- Intent filter indicating that we support card emulation. -->
+            <intent-filter>
+                <action android:name="android.nfc.cardemulation.action.HOST_APDU_SERVICE"/>
+                <category android:name="android.intent.category.DEFAULT"/>
+            </intent-filter>
+            <!-- Required XML configuration file, listing the AIDs that we are emulating cards
+                 for. This defines what protocols our card emulation service supports. -->
+            <meta-data android:name="android.nfc.cardemulation.host_apdu_service"
+                       android:resource="@xml/aid_list"/>
+        </service>
+        <!-- END_INCLUDE(CardEmulationManifest) -->
+    </application>
+
+
+</manifest>
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/cardemulation/AccountStorage.java b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/cardemulation/AccountStorage.java
new file mode 100644
index 0000000..e02d480
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/cardemulation/AccountStorage.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.cardemulation;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.preference.PreferenceManager;
+import android.util.Log;
+
+/**
+ * Utility class for persisting account numbers to disk.
+ *
+ * <p>The default SharedPreferences instance is used as the backing storage. Values are cached
+ * in memory for performance.
+ *
+ * <p>This class is thread-safe.
+ */
+public class AccountStorage {
+    private static final String PREF_ACCOUNT_NUMBER = "account_number";
+    private static final String DEFAULT_ACCOUNT_NUMBER = "00000000";
+    private static final String TAG = "AccountStorage";
+    private static String sAccount = null;
+    private static final Object sAccountLock = new Object();
+
+    public static void SetAccount(Context c, String s) {
+        synchronized(sAccountLock) {
+            Log.i(TAG, "Setting account number: " + s);
+            SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(c);
+            prefs.edit().putString(PREF_ACCOUNT_NUMBER, s).commit();
+            sAccount = s;
+        }
+    }
+
+    public static String GetAccount(Context c) {
+        synchronized (sAccountLock) {
+            if (sAccount == null) {
+                SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(c);
+                String account = prefs.getString(PREF_ACCOUNT_NUMBER, DEFAULT_ACCOUNT_NUMBER);
+                sAccount = account;
+            }
+            return sAccount;
+        }
+    }
+}
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/cardemulation/CardEmulationFragment.java b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/cardemulation/CardEmulationFragment.java
new file mode 100644
index 0000000..f26efda
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/cardemulation/CardEmulationFragment.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.cardemulation;
+
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.EditText;
+
+/**
+ * Generic UI for sample discovery.
+ */
+public class CardEmulationFragment extends Fragment {
+
+    public static final String TAG = "CardEmulationFragment";
+
+    /** Called when sample is created. Displays generic UI with welcome text. */
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        View v = inflater.inflate(R.layout.main_fragment, container, false);
+        EditText account = (EditText) v.findViewById(R.id.card_account_field);
+        account.setText(AccountStorage.GetAccount(getActivity()));
+        account.addTextChangedListener(new AccountUpdater());
+        return v;
+    }
+
+
+    private class AccountUpdater implements TextWatcher {
+        @Override
+        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+            // Not implemented.
+        }
+
+        @Override
+        public void onTextChanged(CharSequence s, int start, int before, int count) {
+            // Not implemented.
+        }
+
+        @Override
+        public void afterTextChanged(Editable s) {
+            String account = s.toString();
+            AccountStorage.SetAccount(getActivity(), account);
+        }
+    }
+}
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/cardemulation/CardService.java b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/cardemulation/CardService.java
new file mode 100644
index 0000000..a409d28
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/cardemulation/CardService.java
@@ -0,0 +1,173 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.cardemulation;
+
+import android.nfc.cardemulation.HostApduService;
+import android.os.Bundle;
+import com.example.android.common.logger.Log;
+
+import java.util.Arrays;
+
+/**
+ * This is a sample APDU Service which demonstrates how to interface with the card emulation support
+ * added in Android 4.4, KitKat.
+ *
+ * <p>This sample replies to any requests sent with the string "Hello World". In real-world
+ * situations, you would need to modify this code to implement your desired communication
+ * protocol.
+ *
+ * <p>This sample will be invoked for any terminals selecting AIDs of 0xF11111111, 0xF22222222, or
+ * 0xF33333333. See src/main/res/xml/aid_list.xml for more details.
+ *
+ * <p class="note">Note: This is a low-level interface. Unlike the NdefMessage many developers
+ * are familiar with for implementing Android Beam in apps, card emulation only provides a
+ * byte-array based communication channel. It is left to developers to implement higher level
+ * protocol support as needed.
+ */
+public class CardService extends HostApduService {
+    private static final String TAG = "CardService";
+    // AID for our loyalty card service.
+    private static final String SAMPLE_LOYALTY_CARD_AID = "F222222222";
+    // ISO-DEP command HEADER for selecting an AID.
+    // Format: [Class | Instruction | Parameter 1 | Parameter 2]
+    private static final String SELECT_APDU_HEADER = "00A40400";
+    // "OK" status word sent in response to SELECT AID command (0x9000)
+    private static final byte[] SELECT_OK_SW = HexStringToByteArray("9000");
+    // "UNKNOWN" status word sent in response to invalid APDU command (0x0000)
+    private static final byte[] UNKNOWN_CMD_SW = HexStringToByteArray("0000");
+    private static final byte[] SELECT_APDU = BuildSelectApdu(SAMPLE_LOYALTY_CARD_AID);
+
+    /**
+     * Called if the connection to the NFC card is lost, in order to let the application know the
+     * cause for the disconnection (either a lost link, or another AID being selected by the
+     * reader).
+     *
+     * @param reason Either DEACTIVATION_LINK_LOSS or DEACTIVATION_DESELECTED
+     */
+    @Override
+    public void onDeactivated(int reason) { }
+
+    /**
+     * This method will be called when a command APDU has been received from a remote device. A
+     * response APDU can be provided directly by returning a byte-array in this method. In general
+     * response APDUs must be sent as quickly as possible, given the fact that the user is likely
+     * holding his device over an NFC reader when this method is called.
+     *
+     * <p class="note">If there are multiple services that have registered for the same AIDs in
+     * their meta-data entry, you will only get called if the user has explicitly selected your
+     * service, either as a default or just for the next tap.
+     *
+     * <p class="note">This method is running on the main thread of your application. If you
+     * cannot return a response APDU immediately, return null and use the {@link
+     * #sendResponseApdu(byte[])} method later.
+     *
+     * @param commandApdu The APDU that received from the remote device
+     * @param extras A bundle containing extra data. May be null.
+     * @return a byte-array containing the response APDU, or null if no response APDU can be sent
+     * at this point.
+     */
+    // BEGIN_INCLUDE(processCommandApdu)
+    @Override
+    public byte[] processCommandApdu(byte[] commandApdu, Bundle extras) {
+        Log.i(TAG, "Received APDU: " + ByteArrayToHexString(commandApdu));
+        // If the APDU matches the SELECT AID command for this service,
+        // send the loyalty card account number, followed by a SELECT_OK status trailer (0x9000).
+        if (Arrays.equals(SELECT_APDU, commandApdu)) {
+            String account = AccountStorage.GetAccount(this);
+            byte[] accountBytes = account.getBytes();
+            Log.i(TAG, "Sending account number: " + account);
+            return ConcatArrays(accountBytes, SELECT_OK_SW);
+        } else {
+            return UNKNOWN_CMD_SW;
+        }
+    }
+    // END_INCLUDE(processCommandApdu)
+
+    /**
+     * Build APDU for SELECT AID command. This command indicates which service a reader is
+     * interested in communicating with. See ISO 7816-4.
+     *
+     * @param aid Application ID (AID) to select
+     * @return APDU for SELECT AID command
+     */
+    public static byte[] BuildSelectApdu(String aid) {
+        // Format: [CLASS | INSTRUCTION | PARAMETER 1 | PARAMETER 2 | LENGTH | DATA]
+        return HexStringToByteArray(SELECT_APDU_HEADER + String.format("%02X",
+                aid.length() / 2) + aid);
+    }
+
+    /**
+     * Utility method to convert a byte array to a hexadecimal string.
+     *
+     * @param bytes Bytes to convert
+     * @return String, containing hexadecimal representation.
+     */
+    public static String ByteArrayToHexString(byte[] bytes) {
+        final char[] hexArray = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
+        char[] hexChars = new char[bytes.length * 2]; // Each byte has two hex characters (nibbles)
+        int v;
+        for (int j = 0; j < bytes.length; j++) {
+            v = bytes[j] & 0xFF; // Cast bytes[j] to int, treating as unsigned value
+            hexChars[j * 2] = hexArray[v >>> 4]; // Select hex character from upper nibble
+            hexChars[j * 2 + 1] = hexArray[v & 0x0F]; // Select hex character from lower nibble
+        }
+        return new String(hexChars);
+    }
+
+    /**
+     * Utility method to convert a hexadecimal string to a byte string.
+     *
+     * <p>Behavior with input strings containing non-hexadecimal characters is undefined.
+     *
+     * @param s String containing hexadecimal characters to convert
+     * @return Byte array generated from input
+     * @throws java.lang.IllegalArgumentException if input length is incorrect
+     */
+    public static byte[] HexStringToByteArray(String s) throws IllegalArgumentException {
+        int len = s.length();
+        if (len % 2 == 1) {
+            throw new IllegalArgumentException("Hex string must have even number of characters");
+        }
+        byte[] data = new byte[len / 2]; // Allocate 1 byte per 2 hex characters
+        for (int i = 0; i < len; i += 2) {
+            // Convert each character into a integer (base-16), then bit-shift into place
+            data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4)
+                    + Character.digit(s.charAt(i+1), 16));
+        }
+        return data;
+    }
+
+    /**
+     * Utility method to concatenate two byte arrays.
+     * @param first First array
+     * @param rest Any remaining arrays
+     * @return Concatenated copy of input arrays
+     */
+    public static byte[] ConcatArrays(byte[] first, byte[]... rest) {
+        int totalLength = first.length;
+        for (byte[] array : rest) {
+            totalLength += array.length;
+        }
+        byte[] result = Arrays.copyOf(first, totalLength);
+        int offset = first.length;
+        for (byte[] array : rest) {
+            System.arraycopy(array, 0, result, offset, array.length);
+            offset += array.length;
+        }
+        return result;
+    }
+}
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/cardemulation/MainActivity.java b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/cardemulation/MainActivity.java
new file mode 100644
index 0000000..0515609
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/cardemulation/MainActivity.java
@@ -0,0 +1,110 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+
+
+package com.example.android.cardemulation;
+
+import android.os.Bundle;
+import android.support.v4.app.FragmentTransaction;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.widget.ViewAnimator;
+
+import com.example.android.common.activities.SampleActivityBase;
+import com.example.android.common.logger.Log;
+import com.example.android.common.logger.LogFragment;
+import com.example.android.common.logger.LogWrapper;
+import com.example.android.common.logger.MessageOnlyLogFilter;
+
+/**
+ * A simple launcher activity containing a summary sample description, sample log and a custom
+ * {@link android.support.v4.app.Fragment} which can display a view.
+ * <p>
+ * For devices with displays with a width of 720dp or greater, the sample log is always visible,
+ * on other devices it's visibility is controlled by an item on the Action Bar.
+ */
+public class MainActivity extends SampleActivityBase {
+
+    public static final String TAG = "MainActivity";
+
+    // Whether the Log Fragment is currently shown
+    private boolean mLogShown;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
+        CardEmulationFragment fragment = new CardEmulationFragment();
+        transaction.replace(R.id.sample_content_fragment, fragment);
+        transaction.commit();
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.main, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onPrepareOptionsMenu(Menu menu) {
+        MenuItem logToggle = menu.findItem(R.id.menu_toggle_log);
+        logToggle.setVisible(findViewById(R.id.sample_output) instanceof ViewAnimator);
+        logToggle.setTitle(mLogShown ? R.string.sample_hide_log : R.string.sample_show_log);
+
+        return super.onPrepareOptionsMenu(menu);
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch(item.getItemId()) {
+            case R.id.menu_toggle_log:
+                mLogShown = !mLogShown;
+                ViewAnimator output = (ViewAnimator) findViewById(R.id.sample_output);
+                if (mLogShown) {
+                    output.setDisplayedChild(1);
+                } else {
+                    output.setDisplayedChild(0);
+                }
+                supportInvalidateOptionsMenu();
+                return true;
+        }
+        return super.onOptionsItemSelected(item);
+    }
+
+    /** Create a chain of targets that will receive log data */
+    @Override
+    public void initializeLogging() {
+        // Wraps Android's native log framework.
+        LogWrapper logWrapper = new LogWrapper();
+        // Using Log, front-end to the logging chain, emulates android.util.log method signatures.
+        Log.setLogNode(logWrapper);
+
+        // Filter strips out everything except the message text.
+        MessageOnlyLogFilter msgFilter = new MessageOnlyLogFilter();
+        logWrapper.setNext(msgFilter);
+
+        // On screen logging via a fragment with a TextView.
+        LogFragment logFragment = (LogFragment) getSupportFragmentManager()
+                .findFragmentById(R.id.log_fragment);
+        msgFilter.setNext(logFragment.getLogView());
+
+        Log.i(TAG, "Ready");
+    }
+}
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/common/activities/SampleActivityBase.java b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/common/activities/SampleActivityBase.java
new file mode 100644
index 0000000..3228927
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/common/activities/SampleActivityBase.java
@@ -0,0 +1,52 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+package com.example.android.common.activities;
+
+import android.os.Bundle;
+import android.support.v4.app.FragmentActivity;
+
+import com.example.android.common.logger.Log;
+import com.example.android.common.logger.LogWrapper;
+
+/**
+ * Base launcher activity, to handle most of the common plumbing for samples.
+ */
+public class SampleActivityBase extends FragmentActivity {
+
+    public static final String TAG = "SampleActivityBase";
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+    }
+
+    @Override
+    protected  void onStart() {
+        super.onStart();
+        initializeLogging();
+    }
+
+    /** Set up targets to receive log data */
+    public void initializeLogging() {
+        // Using Log, front-end to the logging chain, emulates android.util.log method signatures.
+        // Wraps Android's native log framework
+        LogWrapper logWrapper = new LogWrapper();
+        Log.setLogNode(logWrapper);
+
+        Log.i(TAG, "Ready");
+    }
+}
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/common/logger/Log.java b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/common/logger/Log.java
new file mode 100644
index 0000000..17503c5
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/common/logger/Log.java
@@ -0,0 +1,236 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Helper class for a list (or tree) of LoggerNodes.
+ *
+ * <p>When this is set as the head of the list,
+ * an instance of it can function as a drop-in replacement for {@link android.util.Log}.
+ * Most of the methods in this class server only to map a method call in Log to its equivalent
+ * in LogNode.</p>
+ */
+public class Log {
+    // Grabbing the native values from Android's native logging facilities,
+    // to make for easy migration and interop.
+    public static final int NONE = -1;
+    public static final int VERBOSE = android.util.Log.VERBOSE;
+    public static final int DEBUG = android.util.Log.DEBUG;
+    public static final int INFO = android.util.Log.INFO;
+    public static final int WARN = android.util.Log.WARN;
+    public static final int ERROR = android.util.Log.ERROR;
+    public static final int ASSERT = android.util.Log.ASSERT;
+
+    // Stores the beginning of the LogNode topology.
+    private static LogNode mLogNode;
+
+    /**
+     * Returns the next LogNode in the linked list.
+     */
+    public static LogNode getLogNode() {
+        return mLogNode;
+    }
+
+    /**
+     * Sets the LogNode data will be sent to.
+     */
+    public static void setLogNode(LogNode node) {
+        mLogNode = node;
+    }
+
+    /**
+     * Instructs the LogNode to print the log data provided. Other LogNodes can
+     * be chained to the end of the LogNode as desired.
+     *
+     * @param priority Log level of the data being logged. Verbose, Error, etc.
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void println(int priority, String tag, String msg, Throwable tr) {
+        if (mLogNode != null) {
+            mLogNode.println(priority, tag, msg, tr);
+        }
+    }
+
+    /**
+     * Instructs the LogNode to print the log data provided. Other LogNodes can
+     * be chained to the end of the LogNode as desired.
+     *
+     * @param priority Log level of the data being logged. Verbose, Error, etc.
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     */
+    public static void println(int priority, String tag, String msg) {
+        println(priority, tag, msg, null);
+    }
+
+   /**
+     * Prints a message at VERBOSE priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void v(String tag, String msg, Throwable tr) {
+        println(VERBOSE, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at VERBOSE priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void v(String tag, String msg) {
+        v(tag, msg, null);
+    }
+
+
+    /**
+     * Prints a message at DEBUG priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void d(String tag, String msg, Throwable tr) {
+        println(DEBUG, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at DEBUG priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void d(String tag, String msg) {
+        d(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at INFO priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void i(String tag, String msg, Throwable tr) {
+        println(INFO, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at INFO priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void i(String tag, String msg) {
+        i(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at WARN priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void w(String tag, String msg, Throwable tr) {
+        println(WARN, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at WARN priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void w(String tag, String msg) {
+        w(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at WARN priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void w(String tag, Throwable tr) {
+        w(tag, null, tr);
+    }
+
+    /**
+     * Prints a message at ERROR priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void e(String tag, String msg, Throwable tr) {
+        println(ERROR, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at ERROR priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void e(String tag, String msg) {
+        e(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at ASSERT priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void wtf(String tag, String msg, Throwable tr) {
+        println(ASSERT, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at ASSERT priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void wtf(String tag, String msg) {
+        wtf(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at ASSERT priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void wtf(String tag, Throwable tr) {
+        wtf(tag, null, tr);
+    }
+}
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/common/logger/LogFragment.java b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/common/logger/LogFragment.java
new file mode 100644
index 0000000..b302acd
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/common/logger/LogFragment.java
@@ -0,0 +1,109 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.common.logger;
+
+import android.graphics.Typeface;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.view.Gravity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ScrollView;
+
+/**
+ * Simple fraggment which contains a LogView and uses is to output log data it receives
+ * through the LogNode interface.
+ */
+public class LogFragment extends Fragment {
+
+    private LogView mLogView;
+    private ScrollView mScrollView;
+
+    public LogFragment() {}
+
+    public View inflateViews() {
+        mScrollView = new ScrollView(getActivity());
+        ViewGroup.LayoutParams scrollParams = new ViewGroup.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                ViewGroup.LayoutParams.MATCH_PARENT);
+        mScrollView.setLayoutParams(scrollParams);
+
+        mLogView = new LogView(getActivity());
+        ViewGroup.LayoutParams logParams = new ViewGroup.LayoutParams(scrollParams);
+        logParams.height = ViewGroup.LayoutParams.WRAP_CONTENT;
+        mLogView.setLayoutParams(logParams);
+        mLogView.setClickable(true);
+        mLogView.setFocusable(true);
+        mLogView.setTypeface(Typeface.MONOSPACE);
+
+        // Want to set padding as 16 dips, setPadding takes pixels.  Hooray math!
+        int paddingDips = 16;
+        double scale = getResources().getDisplayMetrics().density;
+        int paddingPixels = (int) ((paddingDips * (scale)) + .5);
+        mLogView.setPadding(paddingPixels, paddingPixels, paddingPixels, paddingPixels);
+        mLogView.setCompoundDrawablePadding(paddingPixels);
+
+        mLogView.setGravity(Gravity.BOTTOM);
+        mLogView.setTextAppearance(getActivity(), android.R.style.TextAppearance_Holo_Medium);
+
+        mScrollView.addView(mLogView);
+        return mScrollView;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+
+        View result = inflateViews();
+
+        mLogView.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {}
+
+            @Override
+            public void afterTextChanged(Editable s) {
+                mScrollView.fullScroll(ScrollView.FOCUS_DOWN);
+            }
+        });
+        return result;
+    }
+
+    public LogView getLogView() {
+        return mLogView;
+    }
+}
\ No newline at end of file
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/common/logger/LogNode.java b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/common/logger/LogNode.java
new file mode 100644
index 0000000..bc37cab
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/common/logger/LogNode.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Basic interface for a logging system that can output to one or more targets.
+ * Note that in addition to classes that will output these logs in some format,
+ * one can also implement this interface over a filter and insert that in the chain,
+ * such that no targets further down see certain data, or see manipulated forms of the data.
+ * You could, for instance, write a "ToHtmlLoggerNode" that just converted all the log data
+ * it received to HTML and sent it along to the next node in the chain, without printing it
+ * anywhere.
+ */
+public interface LogNode {
+
+    /**
+     * Instructs first LogNode in the list to print the log data provided.
+     * @param priority Log level of the data being logged.  Verbose, Error, etc.
+     * @param tag Tag for for the log data.  Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public void println(int priority, String tag, String msg, Throwable tr);
+
+}
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/common/logger/LogView.java b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/common/logger/LogView.java
new file mode 100644
index 0000000..c01542b
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/common/logger/LogView.java
@@ -0,0 +1,145 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+import android.app.Activity;
+import android.content.Context;
+import android.util.*;
+import android.widget.TextView;
+
+/** Simple TextView which is used to output log data received through the LogNode interface.
+*/
+public class LogView extends TextView implements LogNode {
+
+    public LogView(Context context) {
+        super(context);
+    }
+
+    public LogView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public LogView(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    /**
+     * Formats the log data and prints it out to the LogView.
+     * @param priority Log level of the data being logged.  Verbose, Error, etc.
+     * @param tag Tag for for the log data.  Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    @Override
+    public void println(int priority, String tag, String msg, Throwable tr) {
+
+        
+        String priorityStr = null;
+
+        // For the purposes of this View, we want to print the priority as readable text.
+        switch(priority) {
+            case android.util.Log.VERBOSE:
+                priorityStr = "VERBOSE";
+                break;
+            case android.util.Log.DEBUG:
+                priorityStr = "DEBUG";
+                break;
+            case android.util.Log.INFO:
+                priorityStr = "INFO";
+                break;
+            case android.util.Log.WARN:
+                priorityStr = "WARN";
+                break;
+            case android.util.Log.ERROR:
+                priorityStr = "ERROR";
+                break;
+            case android.util.Log.ASSERT:
+                priorityStr = "ASSERT";
+                break;
+            default:
+                break;
+        }
+
+        // Handily, the Log class has a facility for converting a stack trace into a usable string.
+        String exceptionStr = null;
+        if (tr != null) {
+            exceptionStr = android.util.Log.getStackTraceString(tr);
+        }
+
+        // Take the priority, tag, message, and exception, and concatenate as necessary
+        // into one usable line of text.
+        final StringBuilder outputBuilder = new StringBuilder();
+
+        String delimiter = "\t";
+        appendIfNotNull(outputBuilder, priorityStr, delimiter);
+        appendIfNotNull(outputBuilder, tag, delimiter);
+        appendIfNotNull(outputBuilder, msg, delimiter);
+        appendIfNotNull(outputBuilder, exceptionStr, delimiter);
+
+        // In case this was originally called from an AsyncTask or some other off-UI thread,
+        // make sure the update occurs within the UI thread.
+        ((Activity) getContext()).runOnUiThread( (new Thread(new Runnable() {
+            @Override
+            public void run() {
+                // Display the text we just generated within the LogView.
+                appendToLog(outputBuilder.toString());
+            }
+        })));
+
+        if (mNext != null) {
+            mNext.println(priority, tag, msg, tr);
+        }
+    }
+
+    public LogNode getNext() {
+        return mNext;
+    }
+
+    public void setNext(LogNode node) {
+        mNext = node;
+    }
+
+    /** Takes a string and adds to it, with a separator, if the bit to be added isn't null. Since
+     * the logger takes so many arguments that might be null, this method helps cut out some of the
+     * agonizing tedium of writing the same 3 lines over and over.
+     * @param source StringBuilder containing the text to append to.
+     * @param addStr The String to append
+     * @param delimiter The String to separate the source and appended strings. A tab or comma,
+     *                  for instance.
+     * @return The fully concatenated String as a StringBuilder
+     */
+    private StringBuilder appendIfNotNull(StringBuilder source, String addStr, String delimiter) {
+        if (addStr != null) {
+            if (addStr.length() == 0) {
+                delimiter = "";
+            }
+
+            return source.append(addStr).append(delimiter);
+        }
+        return source;
+    }
+
+    // The next LogNode in the chain.
+    LogNode mNext;
+
+    /** Outputs the string as a new line of log data in the LogView. */
+    public void appendToLog(String s) {
+        append("\n" + s);
+    }
+
+
+}
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/common/logger/LogWrapper.java b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/common/logger/LogWrapper.java
new file mode 100644
index 0000000..16a9e7b
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/common/logger/LogWrapper.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+import android.util.Log;
+
+/**
+ * Helper class which wraps Android's native Log utility in the Logger interface.  This way
+ * normal DDMS output can be one of the many targets receiving and outputting logs simultaneously.
+ */
+public class LogWrapper implements LogNode {
+
+    // For piping:  The next node to receive Log data after this one has done its work.
+    private LogNode mNext;
+
+    /**
+     * Returns the next LogNode in the linked list.
+     */
+    public LogNode getNext() {
+        return mNext;
+    }
+
+    /**
+     * Sets the LogNode data will be sent to..
+     */
+    public void setNext(LogNode node) {
+        mNext = node;
+    }
+
+    /**
+     * Prints data out to the console using Android's native log mechanism.
+     * @param priority Log level of the data being logged.  Verbose, Error, etc.
+     * @param tag Tag for for the log data.  Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    @Override
+    public void println(int priority, String tag, String msg, Throwable tr) {
+        // There actually are log methods that don't take a msg parameter.  For now,
+        // if that's the case, just convert null to the empty string and move on.
+        String useMsg = msg;
+        if (useMsg == null) {
+            useMsg = "";
+        }
+
+        // If an exeption was provided, convert that exception to a usable string and attach
+        // it to the end of the msg method.
+        if (tr != null) {
+            msg += "\n" + Log.getStackTraceString(tr);
+        }
+
+        // This is functionally identical to Log.x(tag, useMsg);
+        // For instance, if priority were Log.VERBOSE, this would be the same as Log.v(tag, useMsg)
+        Log.println(priority, tag, useMsg);
+
+        // If this isn't the last node in the chain, move things along.
+        if (mNext != null) {
+            mNext.println(priority, tag, msg, tr);
+        }
+    }
+}
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java
new file mode 100644
index 0000000..19967dc
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Simple {@link LogNode} filter, removes everything except the message.
+ * Useful for situations like on-screen log output where you don't want a lot of metadata displayed,
+ * just easy-to-read message updates as they're happening.
+ */
+public class MessageOnlyLogFilter implements LogNode {
+
+    LogNode mNext;
+
+    /**
+     * Takes the "next" LogNode as a parameter, to simplify chaining.
+     *
+     * @param next The next LogNode in the pipeline.
+     */
+    public MessageOnlyLogFilter(LogNode next) {
+        mNext = next;
+    }
+
+    public MessageOnlyLogFilter() {
+    }
+
+    @Override
+    public void println(int priority, String tag, String msg, Throwable tr) {
+        if (mNext != null) {
+            getNext().println(Log.NONE, null, msg, null);
+        }
+    }
+
+    /**
+     * Returns the next LogNode in the chain.
+     */
+    public LogNode getNext() {
+        return mNext;
+    }
+
+    /**
+     * Sets the LogNode data will be sent to..
+     */
+    public void setNext(LogNode node) {
+        mNext = node;
+    }
+
+}
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/drawable-hdpi/ic_launcher.png b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/drawable-hdpi/ic_launcher.png
new file mode 100644
index 0000000..0be8f85
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/drawable-hdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/drawable-hdpi/tile.9.png b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/drawable-hdpi/tile.9.png
new file mode 100644
index 0000000..1358628
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/drawable-hdpi/tile.9.png
Binary files differ
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/drawable-mdpi/ic_launcher.png b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/drawable-mdpi/ic_launcher.png
new file mode 100644
index 0000000..eb13405
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/drawable-mdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/drawable-xhdpi/ic_launcher.png b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/drawable-xhdpi/ic_launcher.png
new file mode 100644
index 0000000..8d1e6a6
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/drawable-xhdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/drawable-xxhdpi/card_background.png b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/drawable-xxhdpi/card_background.png
new file mode 100644
index 0000000..86a7ba7
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/drawable-xxhdpi/card_background.png
Binary files differ
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/drawable-xxhdpi/ic_launcher.png b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/drawable-xxhdpi/ic_launcher.png
new file mode 100644
index 0000000..7ea109f
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/drawable-xxhdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/layout-w720dp/activity_main.xml b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/layout-w720dp/activity_main.xml
new file mode 100755
index 0000000..c9a52f6
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/layout-w720dp/activity_main.xml
@@ -0,0 +1,73 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+<LinearLayout
+      xmlns:android="http://schemas.android.com/apk/res/android"
+      android:orientation="horizontal"
+      android:layout_width="match_parent"
+      android:layout_height="match_parent"
+      android:id="@+id/sample_main_layout">
+
+    <LinearLayout
+          android:id="@+id/sample_output"
+          android:layout_width="0px"
+          android:layout_height="match_parent"
+          android:layout_weight="1"
+          android:orientation="vertical">
+
+        <FrameLayout
+              style="@style/Widget.SampleMessageTile"
+              android:layout_width="match_parent"
+              android:layout_height="wrap_content">
+
+            <TextView
+                  style="@style/Widget.SampleMessage"
+                  android:layout_width="match_parent"
+                  android:layout_height="wrap_content"
+                  android:paddingLeft="@dimen/margin_medium"
+                  android:paddingRight="@dimen/margin_medium"
+                  android:paddingTop="@dimen/margin_large"
+                  android:paddingBottom="@dimen/margin_large"
+                  android:text="@string/intro_message" />
+        </FrameLayout>
+
+        <View
+              android:layout_width="match_parent"
+              android:layout_height="1dp"
+              android:background="@android:color/darker_gray" />
+
+        <fragment
+              android:name="com.example.android.common.logger.LogFragment"
+              android:id="@+id/log_fragment"
+              android:layout_width="match_parent"
+              android:layout_height="0px"
+              android:layout_weight="1" />
+
+    </LinearLayout>
+
+    <View
+          android:layout_width="1dp"
+          android:layout_height="match_parent"
+          android:background="@android:color/darker_gray" />
+
+    <FrameLayout
+          android:id="@+id/sample_content_fragment"
+          android:layout_weight="2"
+          android:layout_width="0px"
+          android:layout_height="match_parent" />
+
+</LinearLayout>
+
+
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/layout/activity_main.xml b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/layout/activity_main.xml
new file mode 100755
index 0000000..1ae4f98
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/layout/activity_main.xml
@@ -0,0 +1,65 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+<LinearLayout
+      xmlns:android="http://schemas.android.com/apk/res/android"
+      android:orientation="vertical"
+      android:layout_width="match_parent"
+      android:layout_height="match_parent"
+      android:id="@+id/sample_main_layout">
+
+    <ViewAnimator
+          android:id="@+id/sample_output"
+          android:layout_width="match_parent"
+          android:layout_height="0px"
+          android:layout_weight="1">
+
+        <ScrollView
+              style="@style/Widget.SampleMessageTile"
+              android:layout_width="match_parent"
+              android:layout_height="match_parent">
+
+            <TextView
+                  style="@style/Widget.SampleMessage"
+                  android:layout_width="match_parent"
+                  android:layout_height="wrap_content"
+                  android:paddingLeft="@dimen/horizontal_page_margin"
+                  android:paddingRight="@dimen/horizontal_page_margin"
+                  android:paddingTop="@dimen/vertical_page_margin"
+                  android:paddingBottom="@dimen/vertical_page_margin"
+                  android:text="@string/intro_message" />
+        </ScrollView>
+
+        <fragment
+              android:name="com.example.android.common.logger.LogFragment"
+              android:id="@+id/log_fragment"
+              android:layout_width="match_parent"
+              android:layout_height="match_parent" />
+
+    </ViewAnimator>
+
+    <View
+          android:layout_width="match_parent"
+          android:layout_height="1dp"
+          android:background="@android:color/darker_gray" />
+
+    <FrameLayout
+          android:id="@+id/sample_content_fragment"
+          android:layout_weight="2"
+          android:layout_width="match_parent"
+          android:layout_height="0px" />
+
+</LinearLayout>
+
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/layout/main_fragment.xml b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/layout/main_fragment.xml
new file mode 100644
index 0000000..2c69743
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/layout/main_fragment.xml
@@ -0,0 +1,65 @@
+<!--
+Copyright (C) 2013 The Android Open Source Project
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<FrameLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="380dp"
+    android:layout_height="242.25dp"
+    android:layout_gravity="center"
+    android:layout_margin="20dp">
+    <ImageView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:src="@drawable/card_background"
+        />
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical"
+        android:padding="20dp"
+        android:layout_gravity="center"
+        android:clickable="true">
+        <TextView
+            android:id="@+id/card_title"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/card_title"
+            android:fontFamily="sans-serif-condensed"
+            android:textStyle="bold"
+            android:textSize="32dp"
+            />
+        <TextView
+            android:id="@+id/card_account_label"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/account_number"
+            android:fontFamily="sans-serif"
+            android:textStyle="bold"
+            android:textSize="18dp"
+            android:layout_marginTop="40dp"
+            />
+        <EditText
+            android:id="@+id/card_account_field"
+            android:width="360dp"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:fontFamily="sans-serif-condensed"
+            android:textStyle="bold"
+            android:textSize="42dp"
+            android:singleLine="true"
+            android:inputType="number" />
+    </LinearLayout>
+</FrameLayout>
\ No newline at end of file
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/menu/main.xml b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/menu/main.xml
new file mode 100644
index 0000000..b49c2c5
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/menu/main.xml
@@ -0,0 +1,21 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:id="@+id/menu_toggle_log"
+          android:showAsAction="always"
+          android:title="@string/sample_show_log" />
+</menu>
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/values-sw600dp/template-dimens.xml b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/values-sw600dp/template-dimens.xml
new file mode 100644
index 0000000..22074a2
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/values-sw600dp/template-dimens.xml
@@ -0,0 +1,24 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <!-- Semantic definitions -->
+
+    <dimen name="horizontal_page_margin">@dimen/margin_huge</dimen>
+    <dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
+
+</resources>
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/values-sw600dp/template-styles.xml b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/values-sw600dp/template-styles.xml
new file mode 100644
index 0000000..03d1974
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/values-sw600dp/template-styles.xml
@@ -0,0 +1,25 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <style name="Widget.SampleMessage">
+        <item name="android:textAppearance">?android:textAppearanceLarge</item>
+        <item name="android:lineSpacingMultiplier">1.2</item>
+        <item name="android:shadowDy">-6.5</item>
+    </style>
+
+</resources>
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/values/base-strings.xml b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/values/base-strings.xml
new file mode 100644
index 0000000..9062a23
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/values/base-strings.xml
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+
+
+<resources>
+    <string name="app_name">CardEmulation</string>
+    <string name="intro_message">
+        <![CDATA[
+        
+            
+            This sample demonstrates how to emulate an NFC card, using the "host card emulation"
+            feature added in Android 4.4. This sample makes the device appear as a loyalty card
+            whenever the screen is on and the user taps their device on an appropriately configured
+            NFC reader.
+
+            The "CardReader" sample can be used to read the loyalty card implemented in this sample.
+            
+        
+        ]]>
+    </string>
+</resources>
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/values/strings.xml b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/values/strings.xml
new file mode 100755
index 0000000..7b9d9ec
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/values/strings.xml
@@ -0,0 +1,19 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+<resources>
+    <string name="sample_show_log">Show Log</string>
+    <string name="sample_hide_log">Hide Log</string>
+</resources>
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/values/template-dimens.xml b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/values/template-dimens.xml
new file mode 100644
index 0000000..39e710b
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/values/template-dimens.xml
@@ -0,0 +1,32 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <!-- Define standard dimensions to comply with Holo-style grids and rhythm. -->
+
+    <dimen name="margin_tiny">4dp</dimen>
+    <dimen name="margin_small">8dp</dimen>
+    <dimen name="margin_medium">16dp</dimen>
+    <dimen name="margin_large">32dp</dimen>
+    <dimen name="margin_huge">64dp</dimen>
+
+    <!-- Semantic definitions -->
+
+    <dimen name="horizontal_page_margin">@dimen/margin_medium</dimen>
+    <dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
+
+</resources>
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/values/template-styles.xml b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/values/template-styles.xml
new file mode 100644
index 0000000..404623e
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/values/template-styles.xml
@@ -0,0 +1,42 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <!-- Activity themes -->
+
+    <style name="Theme.Base" parent="android:Theme.Holo.Light" />
+
+    <style name="Theme.Sample" parent="Theme.Base" />
+
+    <style name="AppTheme" parent="Theme.Sample" />
+    <!-- Widget styling -->
+
+    <style name="Widget" />
+
+    <style name="Widget.SampleMessage">
+        <item name="android:textAppearance">?android:textAppearanceMedium</item>
+        <item name="android:lineSpacingMultiplier">1.1</item>
+    </style>
+
+    <style name="Widget.SampleMessageTile">
+        <item name="android:background">@drawable/tile</item>
+        <item name="android:shadowColor">#7F000000</item>
+        <item name="android:shadowDy">-3.5</item>
+        <item name="android:shadowRadius">2</item>
+    </style>
+
+</resources>
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/xml/aid_list.xml b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/xml/aid_list.xml
new file mode 100644
index 0000000..15ed754
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/src/main/res/xml/aid_list.xml
@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+Copyright (C) 2013 The Android Open Source Project
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<!-- This file defines which AIDs this application should emulate cards for.
+
+     Vendor-specific AIDs should always start with an "F", according to the ISO 7816 spec. We
+     recommended vendor-specific AIDs be at least 6 characters long, to provide sufficient
+     uniqueness. Note, however, that longer AIDs may impose a burden on non-Android NFC terminals.
+     AIDs may not exceed 32 characters (16 bytes).
+
+     Additionally, AIDs must always contain an even number of characters, in hexadecimal format.
+
+     In order to avoid prompting the user to select which service they want to use when the device
+     is scanned, this app must be selected as the default handler for an AID group by the user, or
+     the terminal must select *all* AIDs defined in the category simultaneously ("exact match").
+-->
+<!-- BEGIN_INCLUDE(CardEmulationXML) -->
+<host-apdu-service xmlns:android="http://schemas.android.com/apk/res/android"
+    android:description="@string/service_name"
+    android:requireDeviceUnlock="false">
+    <!--
+    If category="payment" is used for any aid-groups, you must also add an android:apduServiceBanner
+    attribute above, like so:
+
+    android:apduServiceBanner="@drawable/settings_banner"
+
+     apduServiceBanner should be 260x96 dp. In pixels, that works out to...
+       - drawable-xxhdpi: 780x288 px
+       - drawable-xhdpi:  520x192 px
+       - drawable-hdpi:   390x144 px
+       - drawable-mdpi:   260x96  px
+
+    The apduServiceBanner is displayed in the "Tap & Pay" menu in the system Settings app, and
+    is only displayed for apps which implement the "payment" AID category.
+
+    Since this sample is implementing a non-standard card type (a loyalty card, specifically), we
+    do not need to define a banner.
+
+    Important: category="payment" should only be used for industry-standard payment cards. If you are
+        implementing a closed-loop payment system (e.g. stored value cards for a specific merchant
+        or transit system), use category="other". This is because only one "payment" card may be
+        active at a time, whereas all "other" cards are active simultaneously (subject to AID
+        dispatch).
+    -->
+
+    <aid-group android:description="@string/card_title" android:category="other">
+        <aid-filter android:name="F222222222"/>
+    </aid-group>
+<!-- END_INCLUDE(CardEmulationXML) -->
+</host-apdu-service>
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/tests/AndroidManifest.xml b/prebuilts/gradle/CardEmulation/CardEmulationSample/tests/AndroidManifest.xml
new file mode 100644
index 0000000..447d041
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/tests/AndroidManifest.xml
@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Copyright (C) 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+<!-- package name must be unique so suffix with "tests" so package loader doesn't ignore us -->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="${sample.package}.tests"
+          android:versionCode="1"
+          android:versionName="1.0">
+
+    <uses-sdk
+            android:minSdkVersion="19"
+            android:targetSdkVersion="19" />
+
+    <!-- We add an application tag here just so that we can indicate that
+         this package needs to link against the android.test library,
+         which is needed when building test cases. -->
+    <application>
+        <uses-library android:name="android.test.runner" />
+    </application>
+
+    <!--
+    Specifies the instrumentation test runner used to run the tests.
+    -->
+    <instrumentation
+            android:name="android.test.InstrumentationTestRunner"
+            android:targetPackage="com.example.android.cardemulation"
+            android:label="Tests for com.example.android.cardemulation" />
+
+</manifest>
\ No newline at end of file
diff --git a/prebuilts/gradle/CardEmulation/CardEmulationSample/tests/src/com/example/android/cardemulation/tests/SampleTests.java b/prebuilts/gradle/CardEmulation/CardEmulationSample/tests/src/com/example/android/cardemulation/tests/SampleTests.java
new file mode 100644
index 0000000..b9828c2
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/CardEmulationSample/tests/src/com/example/android/cardemulation/tests/SampleTests.java
@@ -0,0 +1,169 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+/*
+* Copyright (C) 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*      http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+package com.example.android.cardemulation.tests;
+
+import com.example.android.cardemulation.*;
+
+import android.test.ActivityInstrumentationTestCase2;
+
+/**
+* Tests for CardEmulation sample.
+*/
+public class SampleTests extends ActivityInstrumentationTestCase2<MainActivity> {
+
+    private MainActivity mTestActivity;
+    private CardEmulationFragment mTestFragment;
+
+    public SampleTests() {
+        super(MainActivity.class);
+    }
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+
+        // Starts the activity under test using the default Intent with:
+        // action = {@link Intent#ACTION_MAIN}
+        // flags = {@link Intent#FLAG_ACTIVITY_NEW_TASK}
+        // All other fields are null or empty.
+        mTestActivity = getActivity();
+        mTestFragment = (CardEmulationFragment)
+            mTestActivity.getSupportFragmentManager().getFragments().get(1);
+    }
+
+    /**
+    * Test if the test fixture has been set up correctly.
+    */
+    public void testPreconditions() {
+        //Try to add a message to add context to your assertions. These messages will be shown if
+        //a tests fails and make it easy to understand why a test failed
+        assertNotNull("mTestActivity is null", mTestActivity);
+        assertNotNull("mTestFragment is null", mTestFragment);
+    }
+
+    /**
+     * Test converting from a hex string to binary.
+     */
+    public void testHexToBinary() {
+        final byte[] testData = {(byte) 0xc0, (byte) 0xff, (byte) 0xee};
+        final byte[] output = CardService.HexStringToByteArray("C0FFEE");
+        for (int i = 0; i < testData.length; i++) {
+            assertEquals(testData[i], output[i]);
+        }
+    }
+
+    /**
+     * Test converting from binary to a hex string
+     */
+    public void testBinaryToHex() {
+        final byte[] input = {(byte) 0xc0, (byte) 0xff, (byte) 0xee};
+        final String output = CardService.ByteArrayToHexString(input);
+        assertEquals("C0FFEE", output);
+    }
+
+    /**
+     * Verify that account number is returned in response to APDU.
+     */
+    public void testRequestAccoutNumber() {
+        AccountStorage.SetAccount(this.getActivity(), "1234");
+        final byte[] command = {(byte) 0x00, (byte) 0xA4, (byte) 0x04, (byte) 0x00, (byte) 0x05,
+                (byte) 0xF2, (byte) 0x22, (byte) 0x22, (byte) 0x22, (byte) 0x22};
+        final byte[] expectedResponse = {(byte) 0x31, (byte) 0x32, (byte) 0x33, (byte) 0x34,
+                (byte) 0x90, (byte) 0x00};
+        final CardService cs = new CardService();
+        final byte[] output = cs.processCommandApdu(command, null);
+
+        assertEquals(expectedResponse.length, output.length);
+        for (int i = 0; i < expectedResponse.length; i++) {
+            assertEquals(expectedResponse[i], output[i]);
+        }
+
+    }
+
+
+    /**
+     * Verify that account number is returned in response to APDU.
+     */
+    public void testInvalidCommand() {
+        AccountStorage.SetAccount(this.getActivity(), "1234");
+        final byte[] command = {(byte) 0x01, (byte) 0xA4, (byte) 0x04, (byte) 0x00, (byte) 0x05,
+                (byte) 0xF2, (byte) 0x22, (byte) 0x22, (byte) 0x22, (byte) 0x22};
+        final byte[] expectedResponse = {(byte) 0x00, (byte) 0x00};
+        final CardService cs = new CardService();
+        final byte[] output = cs.processCommandApdu(command, null);
+
+        assertEquals(expectedResponse.length, output.length);
+        for (int i = 0; i < expectedResponse.length; i++) {
+            assertEquals(expectedResponse[i], output[i]);
+        }
+    }
+
+    /**
+     * Test functionality fo ConcatArrays method.
+     */
+    public void testArrayConcat() {
+        final byte[] a = {(byte) 0x01, (byte) 0x02};
+        final byte[] b = {(byte) 0x03, (byte) 0x04};
+        final byte[] c = {(byte) 0x05, (byte) 0x06};
+        final byte[] expected = {(byte) 0x01, (byte) 0x02, (byte) 0x03, (byte) 0x04, (byte) 0x05,
+                (byte) 0x06};
+        final byte[] result = CardService.ConcatArrays(a, b, c);
+
+        assertEquals(expected.length, result.length);
+        for (int i = 0; i < expected.length; i++) {
+            assertEquals(expected[i], result[i]);
+        }
+    }
+
+    /**
+     * Test setting and getting account number
+     */
+    public void testSetAccountNumber() {
+        final String account = "3456";
+        AccountStorage.SetAccount(getActivity(), account);
+        this.assertEquals(account, AccountStorage.GetAccount(getActivity()));
+    }
+
+    /**
+     * Test building SELECT APDU from AID string.
+     */
+    public void testBuildSelectApdu() {
+        final String aid = "1234";
+        final byte[] expectedResult = {(byte) 0x00, (byte) 0xA4, 04, (byte) 0x00, (byte) 0x02,
+                (byte) 0x12, (byte) 0x34};
+        final byte[] result = CardService.BuildSelectApdu(aid);
+
+        assertEquals(expectedResult.length, result.length);
+        for (int i = 0; i < expectedResult.length; i++) {
+            assertEquals(expectedResult[i], result[i]);
+        }
+    }
+}
\ No newline at end of file
diff --git a/prebuilts/gradle/CardEmulation/README.txt b/prebuilts/gradle/CardEmulation/README.txt
new file mode 100644
index 0000000..9616c58
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/README.txt
@@ -0,0 +1,18 @@
+Build Instructions
+-------------------
+
+This sample uses the Gradle build system. To build this project, use the
+"gradlew build" command or use "Import Project" in Android Studio.
+
+To see a list of all available commands, run "gradlew tasks".
+
+Dependencies
+-------------
+
+- Android SDK Build-tools v18.1
+- Android Support Repository v2
+
+Dependencies are available for download via the Android SDK Manager.
+
+Android Studio is available for download at:
+    http://developer.android.com/sdk/installing/studio.html
diff --git a/prebuilts/gradle/CardEmulation/build.gradle b/prebuilts/gradle/CardEmulation/build.gradle
new file mode 100644
index 0000000..12a6f48
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/build.gradle
@@ -0,0 +1,8 @@
+
+
+
+
+
+
+
+
diff --git a/prebuilts/gradle/CardEmulation/gradle/wrapper/gradle-wrapper.jar b/prebuilts/gradle/CardEmulation/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..8c0fb64
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/gradle/wrapper/gradle-wrapper.jar
Binary files differ
diff --git a/prebuilts/gradle/CardEmulation/gradle/wrapper/gradle-wrapper.properties b/prebuilts/gradle/CardEmulation/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..56f685a
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Wed Apr 10 15:27:10 PDT 2013
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=http\://services.gradle.org/distributions/gradle-1.10-bin.zip
diff --git a/prebuilts/gradle/CardEmulation/gradlew b/prebuilts/gradle/CardEmulation/gradlew
new file mode 100755
index 0000000..91a7e26
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/gradlew
@@ -0,0 +1,164 @@
+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+esac
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched.
+if $cygwin ; then
+    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+fi
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >&-
+APP_HOME="`pwd -P`"
+cd "$SAVED" >&-
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+    JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
diff --git a/prebuilts/gradle/CardEmulation/gradlew.bat b/prebuilts/gradle/CardEmulation/gradlew.bat
new file mode 100644
index 0000000..aec9973
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/gradlew.bat
@@ -0,0 +1,90 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windowz variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+if "%@eval[2+2]" == "4" goto 4NT_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+goto execute
+
+:4NT_args
+@rem Get arguments from the 4NT Shell from JP Software
+set CMD_LINE_ARGS=%$
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/prebuilts/gradle/CardEmulation/settings.gradle b/prebuilts/gradle/CardEmulation/settings.gradle
new file mode 100644
index 0000000..32b4942
--- /dev/null
+++ b/prebuilts/gradle/CardEmulation/settings.gradle
@@ -0,0 +1 @@
+include 'CardEmulationSample'
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/build.gradle b/prebuilts/gradle/CardReader/CardReaderSample/build.gradle
new file mode 100644
index 0000000..f73b206
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/build.gradle
@@ -0,0 +1,58 @@
+
+
+
+buildscript {
+    repositories {
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:0.8.+'
+    }
+}
+
+apply plugin: 'android'
+
+dependencies {
+    // Add the support lib that is appropriate for SDK 19
+    compile "com.android.support:support-v13:19.0.+"
+}
+
+// The sample build uses multiple directories to
+// keep boilerplate and common code separate from
+// the main sample code.
+List<String> dirs = [
+    'main',     // main sample code; look here for the interesting stuff.
+    'common',   // components that are reused by multiple samples
+    'template'] // boilerplate code that is generated by the sample template process
+
+android {
+    compileSdkVersion 19
+    buildToolsVersion "19.0.1"
+
+    sourceSets {
+        main {
+            dirs.each { dir ->
+                java.srcDirs "src/${dir}/java"
+                res.srcDirs "src/${dir}/res"
+            }
+        }
+        instrumentTest.setRoot('tests')
+        instrumentTest.java.srcDirs = ['tests/src']
+    }
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/AndroidManifest.xml b/prebuilts/gradle/CardReader/CardReaderSample/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..a8ebd13
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/AndroidManifest.xml
@@ -0,0 +1,53 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.android.cardreader"
+    android:versionCode="1"
+    android:versionName="1.0">
+
+    <!-- NFC Reader Mode was added in API 19. -->
+    <uses-sdk android:minSdkVersion="19" android:targetSdkVersion="19" />
+    <uses-permission android:name="android.permission.NFC" />
+    <uses-feature android:name="android.hardware.nfc" android:required="true" />
+
+    <application android:allowBackup="true"
+        android:label="@string/app_name"
+        android:icon="@drawable/ic_launcher"
+        android:theme="@style/AppTheme">
+        <activity android:name=".MainActivity"
+                  android:label="@string/app_name"
+                  android:launchMode="singleTop">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+
+            <!-- NFC-related intent filter. Allows application to handle messages from any
+                 NFC-A devices discovered. Other Android devices are required to support NFC-A.
+                 See: res/xml/nfc_tech_filter.xml -->
+            <intent-filter>
+                <action android:name="android.nfc.action.TECH_DISCOVERED" />
+            </intent-filter>
+            <meta-data
+                android:name="android.nfc.action.TECH_DISCOVERED"
+                android:resource="@xml/nfc_tech_filter" />
+        </activity>
+    </application>
+
+
+</manifest>
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/cardreader/CardReaderFragment.java b/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/cardreader/CardReaderFragment.java
new file mode 100644
index 0000000..3f27e9b
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/cardreader/CardReaderFragment.java
@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.cardreader;
+
+import android.app.Activity;
+import android.nfc.NfcAdapter;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import com.example.android.common.logger.Log;
+
+/**
+ * Generic UI for sample discovery.
+ */
+public class CardReaderFragment extends Fragment implements LoyaltyCardReader.AccountCallback {
+
+    public static final String TAG = "CardReaderFragment";
+    // Recommend NfcAdapter flags for reading from other Android devices. Indicates that this
+    // activity is interested in NFC-A devices (including other Android devices), and that the
+    // system should not check for the presence of NDEF-formatted data (e.g. Android Beam).
+    public static int READER_FLAGS =
+            NfcAdapter.FLAG_READER_NFC_A | NfcAdapter.FLAG_READER_SKIP_NDEF_CHECK;
+    public LoyaltyCardReader mLoyaltyCardReader;
+    private TextView mAccountField;
+
+    /** Called when sample is created. Displays generic UI with welcome text. */
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        View v = inflater.inflate(R.layout.main_fragment, container, false);
+        if (v != null) {
+            mAccountField = (TextView) v.findViewById(R.id.card_account_field);
+            mAccountField.setText("Waiting...");
+
+            mLoyaltyCardReader = new LoyaltyCardReader(this);
+
+            // Disable Android Beam and register our card reader callback
+            enableReaderMode();
+        }
+
+        return v;
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+        disableReaderMode();
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        enableReaderMode();
+    }
+
+    private void enableReaderMode() {
+        Log.i(TAG, "Enabling reader mode");
+        Activity activity = getActivity();
+        NfcAdapter nfc = NfcAdapter.getDefaultAdapter(activity);
+        if (nfc != null) {
+            nfc.enableReaderMode(activity, mLoyaltyCardReader, READER_FLAGS, null);
+        }
+    }
+
+    private void disableReaderMode() {
+        Log.i(TAG, "Disabling reader mode");
+        Activity activity = getActivity();
+        NfcAdapter nfc = NfcAdapter.getDefaultAdapter(activity);
+        if (nfc != null) {
+            nfc.disableReaderMode(activity);
+        }
+    }
+
+    @Override
+    public void onAccountReceived(final String account) {
+        // This callback is run on a background thread, but updates to UI elements must be performed
+        // on the UI thread.
+        getActivity().runOnUiThread(new Runnable() {
+            @Override
+            public void run() {
+                mAccountField.setText(account);
+            }
+        });
+    }
+}
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/cardreader/LoyaltyCardReader.java b/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/cardreader/LoyaltyCardReader.java
new file mode 100644
index 0000000..c29bdfd
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/cardreader/LoyaltyCardReader.java
@@ -0,0 +1,149 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.cardreader;
+
+import android.nfc.NfcAdapter;
+import android.nfc.Tag;
+import android.nfc.tech.IsoDep;
+
+import com.example.android.common.logger.Log;
+
+import java.io.IOException;
+import java.lang.ref.WeakReference;
+import java.util.Arrays;
+
+/**
+ * Callback class, invoked when an NFC card is scanned while the device is running in reader mode.
+ *
+ * Reader mode can be invoked by calling NfcAdapter
+ */
+public class LoyaltyCardReader implements NfcAdapter.ReaderCallback {
+    private static final String TAG = "LoyaltyCardReader";
+    // AID for our loyalty card service.
+    private static final String SAMPLE_LOYALTY_CARD_AID = "F222222222";
+    // ISO-DEP command HEADER for selecting an AID.
+    // Format: [Class | Instruction | Parameter 1 | Parameter 2]
+    private static final String SELECT_APDU_HEADER = "00A40400";
+    // "OK" status word sent in response to SELECT AID command (0x9000)
+    private static final byte[] SELECT_OK_SW = {(byte) 0x90, (byte) 0x00};
+
+    // Weak reference to prevent retain loop. mAccountCallback is responsible for exiting
+    // foreground mode before it becomes invalid (e.g. during onPause() or onStop()).
+    private WeakReference<AccountCallback> mAccountCallback;
+
+    public interface AccountCallback {
+        public void onAccountReceived(String account);
+    }
+
+    public LoyaltyCardReader(AccountCallback accountCallback) {
+        mAccountCallback = new WeakReference<AccountCallback>(accountCallback);
+    }
+
+    /**
+     * Callback when a new tag is discovered by the system.
+     *
+     * <p>Communication with the card should take place here.
+     *
+     * @param tag Discovered tag
+     */
+    @Override
+    public void onTagDiscovered(Tag tag) {
+        Log.i(TAG, "New tag discovered");
+        // Android's Host-based Card Emulation (HCE) feature implements the ISO-DEP (ISO 14443-4)
+        // protocol.
+        //
+        // In order to communicate with a device using HCE, the discovered tag should be processed
+        // using the IsoDep class.
+        IsoDep isoDep = IsoDep.get(tag);
+        if (isoDep != null) {
+            try {
+                // Connect to the remote NFC device
+                isoDep.connect();
+                // Build SELECT AID command for our loyalty card service.
+                // This command tells the remote device which service we wish to communicate with.
+                Log.i(TAG, "Requesting remote AID: " + SAMPLE_LOYALTY_CARD_AID);
+                byte[] command = BuildSelectApdu(SAMPLE_LOYALTY_CARD_AID);
+                // Send command to remote device
+                Log.i(TAG, "Sending: " + ByteArrayToHexString(command));
+                byte[] result = isoDep.transceive(command);
+                // If AID is successfully selected, 0x9000 is returned as the status word (last 2
+                // bytes of the result) by convention. Everything before the status word is
+                // optional payload, which is used here to hold the account number.
+                int resultLength = result.length;
+                byte[] statusWord = {result[resultLength-2], result[resultLength-1]};
+                byte[] payload = Arrays.copyOf(result, resultLength-2);
+                if (Arrays.equals(SELECT_OK_SW, statusWord)) {
+                    // The remote NFC device will immediately respond with its stored account number
+                    String accountNumber = new String(payload, "UTF-8");
+                    Log.i(TAG, "Received: " + accountNumber);
+                    // Inform CardReaderFragment of received account number
+                    mAccountCallback.get().onAccountReceived(accountNumber);
+                }
+            } catch (IOException e) {
+                Log.e(TAG, "Error communicating with card: " + e.toString());
+            }
+        }
+    }
+
+    /**
+     * Build APDU for SELECT AID command. This command indicates which service a reader is
+     * interested in communicating with. See ISO 7816-4.
+     *
+     * @param aid Application ID (AID) to select
+     * @return APDU for SELECT AID command
+     */
+    public static byte[] BuildSelectApdu(String aid) {
+        // Format: [CLASS | INSTRUCTION | PARAMETER 1 | PARAMETER 2 | LENGTH | DATA]
+        return HexStringToByteArray(SELECT_APDU_HEADER + String.format("%02X", aid.length() / 2) + aid);
+    }
+
+    /**
+     * Utility class to convert a byte array to a hexadecimal string.
+     *
+     * @param bytes Bytes to convert
+     * @return String, containing hexadecimal representation.
+     */
+    public static String ByteArrayToHexString(byte[] bytes) {
+        final char[] hexArray = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
+        char[] hexChars = new char[bytes.length * 2];
+        int v;
+        for ( int j = 0; j < bytes.length; j++ ) {
+            v = bytes[j] & 0xFF;
+            hexChars[j * 2] = hexArray[v >>> 4];
+            hexChars[j * 2 + 1] = hexArray[v & 0x0F];
+        }
+        return new String(hexChars);
+    }
+
+    /**
+     * Utility class to convert a hexadecimal string to a byte string.
+     *
+     * <p>Behavior with input strings containing non-hexadecimal characters is undefined.
+     *
+     * @param s String containing hexadecimal characters to convert
+     * @return Byte array generated from input
+     */
+    public static byte[] HexStringToByteArray(String s) {
+        int len = s.length();
+        byte[] data = new byte[len / 2];
+        for (int i = 0; i < len; i += 2) {
+            data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4)
+                    + Character.digit(s.charAt(i+1), 16));
+        }
+        return data;
+    }
+
+}
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/cardreader/MainActivity.java b/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/cardreader/MainActivity.java
new file mode 100644
index 0000000..e0280e9
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/cardreader/MainActivity.java
@@ -0,0 +1,110 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+
+
+package com.example.android.cardreader;
+
+import android.os.Bundle;
+import android.support.v4.app.FragmentTransaction;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.widget.ViewAnimator;
+
+import com.example.android.common.activities.SampleActivityBase;
+import com.example.android.common.logger.Log;
+import com.example.android.common.logger.LogFragment;
+import com.example.android.common.logger.LogWrapper;
+import com.example.android.common.logger.MessageOnlyLogFilter;
+
+/**
+ * A simple launcher activity containing a summary sample description, sample log and a custom
+ * {@link android.support.v4.app.Fragment} which can display a view.
+ * <p>
+ * For devices with displays with a width of 720dp or greater, the sample log is always visible,
+ * on other devices it's visibility is controlled by an item on the Action Bar.
+ */
+public class MainActivity extends SampleActivityBase {
+
+    public static final String TAG = "MainActivity";
+
+    // Whether the Log Fragment is currently shown
+    private boolean mLogShown;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
+        CardReaderFragment fragment = new CardReaderFragment();
+        transaction.replace(R.id.sample_content_fragment, fragment);
+        transaction.commit();
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.main, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onPrepareOptionsMenu(Menu menu) {
+        MenuItem logToggle = menu.findItem(R.id.menu_toggle_log);
+        logToggle.setVisible(findViewById(R.id.sample_output) instanceof ViewAnimator);
+        logToggle.setTitle(mLogShown ? R.string.sample_hide_log : R.string.sample_show_log);
+
+        return super.onPrepareOptionsMenu(menu);
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch(item.getItemId()) {
+            case R.id.menu_toggle_log:
+                mLogShown = !mLogShown;
+                ViewAnimator output = (ViewAnimator) findViewById(R.id.sample_output);
+                if (mLogShown) {
+                    output.setDisplayedChild(1);
+                } else {
+                    output.setDisplayedChild(0);
+                }
+                supportInvalidateOptionsMenu();
+                return true;
+        }
+        return super.onOptionsItemSelected(item);
+    }
+
+    /** Create a chain of targets that will receive log data */
+    @Override
+    public void initializeLogging() {
+        // Wraps Android's native log framework.
+        LogWrapper logWrapper = new LogWrapper();
+        // Using Log, front-end to the logging chain, emulates android.util.log method signatures.
+        Log.setLogNode(logWrapper);
+
+        // Filter strips out everything except the message text.
+        MessageOnlyLogFilter msgFilter = new MessageOnlyLogFilter();
+        logWrapper.setNext(msgFilter);
+
+        // On screen logging via a fragment with a TextView.
+        LogFragment logFragment = (LogFragment) getSupportFragmentManager()
+                .findFragmentById(R.id.log_fragment);
+        msgFilter.setNext(logFragment.getLogView());
+
+        Log.i(TAG, "Ready");
+    }
+}
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/common/activities/SampleActivityBase.java b/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/common/activities/SampleActivityBase.java
new file mode 100644
index 0000000..3228927
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/common/activities/SampleActivityBase.java
@@ -0,0 +1,52 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+package com.example.android.common.activities;
+
+import android.os.Bundle;
+import android.support.v4.app.FragmentActivity;
+
+import com.example.android.common.logger.Log;
+import com.example.android.common.logger.LogWrapper;
+
+/**
+ * Base launcher activity, to handle most of the common plumbing for samples.
+ */
+public class SampleActivityBase extends FragmentActivity {
+
+    public static final String TAG = "SampleActivityBase";
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+    }
+
+    @Override
+    protected  void onStart() {
+        super.onStart();
+        initializeLogging();
+    }
+
+    /** Set up targets to receive log data */
+    public void initializeLogging() {
+        // Using Log, front-end to the logging chain, emulates android.util.log method signatures.
+        // Wraps Android's native log framework
+        LogWrapper logWrapper = new LogWrapper();
+        Log.setLogNode(logWrapper);
+
+        Log.i(TAG, "Ready");
+    }
+}
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/common/logger/Log.java b/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/common/logger/Log.java
new file mode 100644
index 0000000..17503c5
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/common/logger/Log.java
@@ -0,0 +1,236 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Helper class for a list (or tree) of LoggerNodes.
+ *
+ * <p>When this is set as the head of the list,
+ * an instance of it can function as a drop-in replacement for {@link android.util.Log}.
+ * Most of the methods in this class server only to map a method call in Log to its equivalent
+ * in LogNode.</p>
+ */
+public class Log {
+    // Grabbing the native values from Android's native logging facilities,
+    // to make for easy migration and interop.
+    public static final int NONE = -1;
+    public static final int VERBOSE = android.util.Log.VERBOSE;
+    public static final int DEBUG = android.util.Log.DEBUG;
+    public static final int INFO = android.util.Log.INFO;
+    public static final int WARN = android.util.Log.WARN;
+    public static final int ERROR = android.util.Log.ERROR;
+    public static final int ASSERT = android.util.Log.ASSERT;
+
+    // Stores the beginning of the LogNode topology.
+    private static LogNode mLogNode;
+
+    /**
+     * Returns the next LogNode in the linked list.
+     */
+    public static LogNode getLogNode() {
+        return mLogNode;
+    }
+
+    /**
+     * Sets the LogNode data will be sent to.
+     */
+    public static void setLogNode(LogNode node) {
+        mLogNode = node;
+    }
+
+    /**
+     * Instructs the LogNode to print the log data provided. Other LogNodes can
+     * be chained to the end of the LogNode as desired.
+     *
+     * @param priority Log level of the data being logged. Verbose, Error, etc.
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void println(int priority, String tag, String msg, Throwable tr) {
+        if (mLogNode != null) {
+            mLogNode.println(priority, tag, msg, tr);
+        }
+    }
+
+    /**
+     * Instructs the LogNode to print the log data provided. Other LogNodes can
+     * be chained to the end of the LogNode as desired.
+     *
+     * @param priority Log level of the data being logged. Verbose, Error, etc.
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     */
+    public static void println(int priority, String tag, String msg) {
+        println(priority, tag, msg, null);
+    }
+
+   /**
+     * Prints a message at VERBOSE priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void v(String tag, String msg, Throwable tr) {
+        println(VERBOSE, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at VERBOSE priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void v(String tag, String msg) {
+        v(tag, msg, null);
+    }
+
+
+    /**
+     * Prints a message at DEBUG priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void d(String tag, String msg, Throwable tr) {
+        println(DEBUG, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at DEBUG priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void d(String tag, String msg) {
+        d(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at INFO priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void i(String tag, String msg, Throwable tr) {
+        println(INFO, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at INFO priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void i(String tag, String msg) {
+        i(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at WARN priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void w(String tag, String msg, Throwable tr) {
+        println(WARN, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at WARN priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void w(String tag, String msg) {
+        w(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at WARN priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void w(String tag, Throwable tr) {
+        w(tag, null, tr);
+    }
+
+    /**
+     * Prints a message at ERROR priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void e(String tag, String msg, Throwable tr) {
+        println(ERROR, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at ERROR priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void e(String tag, String msg) {
+        e(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at ASSERT priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void wtf(String tag, String msg, Throwable tr) {
+        println(ASSERT, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at ASSERT priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void wtf(String tag, String msg) {
+        wtf(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at ASSERT priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void wtf(String tag, Throwable tr) {
+        wtf(tag, null, tr);
+    }
+}
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/common/logger/LogFragment.java b/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/common/logger/LogFragment.java
new file mode 100644
index 0000000..b302acd
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/common/logger/LogFragment.java
@@ -0,0 +1,109 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.common.logger;
+
+import android.graphics.Typeface;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.view.Gravity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ScrollView;
+
+/**
+ * Simple fraggment which contains a LogView and uses is to output log data it receives
+ * through the LogNode interface.
+ */
+public class LogFragment extends Fragment {
+
+    private LogView mLogView;
+    private ScrollView mScrollView;
+
+    public LogFragment() {}
+
+    public View inflateViews() {
+        mScrollView = new ScrollView(getActivity());
+        ViewGroup.LayoutParams scrollParams = new ViewGroup.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                ViewGroup.LayoutParams.MATCH_PARENT);
+        mScrollView.setLayoutParams(scrollParams);
+
+        mLogView = new LogView(getActivity());
+        ViewGroup.LayoutParams logParams = new ViewGroup.LayoutParams(scrollParams);
+        logParams.height = ViewGroup.LayoutParams.WRAP_CONTENT;
+        mLogView.setLayoutParams(logParams);
+        mLogView.setClickable(true);
+        mLogView.setFocusable(true);
+        mLogView.setTypeface(Typeface.MONOSPACE);
+
+        // Want to set padding as 16 dips, setPadding takes pixels.  Hooray math!
+        int paddingDips = 16;
+        double scale = getResources().getDisplayMetrics().density;
+        int paddingPixels = (int) ((paddingDips * (scale)) + .5);
+        mLogView.setPadding(paddingPixels, paddingPixels, paddingPixels, paddingPixels);
+        mLogView.setCompoundDrawablePadding(paddingPixels);
+
+        mLogView.setGravity(Gravity.BOTTOM);
+        mLogView.setTextAppearance(getActivity(), android.R.style.TextAppearance_Holo_Medium);
+
+        mScrollView.addView(mLogView);
+        return mScrollView;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+
+        View result = inflateViews();
+
+        mLogView.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {}
+
+            @Override
+            public void afterTextChanged(Editable s) {
+                mScrollView.fullScroll(ScrollView.FOCUS_DOWN);
+            }
+        });
+        return result;
+    }
+
+    public LogView getLogView() {
+        return mLogView;
+    }
+}
\ No newline at end of file
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/common/logger/LogNode.java b/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/common/logger/LogNode.java
new file mode 100644
index 0000000..bc37cab
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/common/logger/LogNode.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Basic interface for a logging system that can output to one or more targets.
+ * Note that in addition to classes that will output these logs in some format,
+ * one can also implement this interface over a filter and insert that in the chain,
+ * such that no targets further down see certain data, or see manipulated forms of the data.
+ * You could, for instance, write a "ToHtmlLoggerNode" that just converted all the log data
+ * it received to HTML and sent it along to the next node in the chain, without printing it
+ * anywhere.
+ */
+public interface LogNode {
+
+    /**
+     * Instructs first LogNode in the list to print the log data provided.
+     * @param priority Log level of the data being logged.  Verbose, Error, etc.
+     * @param tag Tag for for the log data.  Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public void println(int priority, String tag, String msg, Throwable tr);
+
+}
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/common/logger/LogView.java b/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/common/logger/LogView.java
new file mode 100644
index 0000000..c01542b
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/common/logger/LogView.java
@@ -0,0 +1,145 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+import android.app.Activity;
+import android.content.Context;
+import android.util.*;
+import android.widget.TextView;
+
+/** Simple TextView which is used to output log data received through the LogNode interface.
+*/
+public class LogView extends TextView implements LogNode {
+
+    public LogView(Context context) {
+        super(context);
+    }
+
+    public LogView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public LogView(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    /**
+     * Formats the log data and prints it out to the LogView.
+     * @param priority Log level of the data being logged.  Verbose, Error, etc.
+     * @param tag Tag for for the log data.  Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    @Override
+    public void println(int priority, String tag, String msg, Throwable tr) {
+
+        
+        String priorityStr = null;
+
+        // For the purposes of this View, we want to print the priority as readable text.
+        switch(priority) {
+            case android.util.Log.VERBOSE:
+                priorityStr = "VERBOSE";
+                break;
+            case android.util.Log.DEBUG:
+                priorityStr = "DEBUG";
+                break;
+            case android.util.Log.INFO:
+                priorityStr = "INFO";
+                break;
+            case android.util.Log.WARN:
+                priorityStr = "WARN";
+                break;
+            case android.util.Log.ERROR:
+                priorityStr = "ERROR";
+                break;
+            case android.util.Log.ASSERT:
+                priorityStr = "ASSERT";
+                break;
+            default:
+                break;
+        }
+
+        // Handily, the Log class has a facility for converting a stack trace into a usable string.
+        String exceptionStr = null;
+        if (tr != null) {
+            exceptionStr = android.util.Log.getStackTraceString(tr);
+        }
+
+        // Take the priority, tag, message, and exception, and concatenate as necessary
+        // into one usable line of text.
+        final StringBuilder outputBuilder = new StringBuilder();
+
+        String delimiter = "\t";
+        appendIfNotNull(outputBuilder, priorityStr, delimiter);
+        appendIfNotNull(outputBuilder, tag, delimiter);
+        appendIfNotNull(outputBuilder, msg, delimiter);
+        appendIfNotNull(outputBuilder, exceptionStr, delimiter);
+
+        // In case this was originally called from an AsyncTask or some other off-UI thread,
+        // make sure the update occurs within the UI thread.
+        ((Activity) getContext()).runOnUiThread( (new Thread(new Runnable() {
+            @Override
+            public void run() {
+                // Display the text we just generated within the LogView.
+                appendToLog(outputBuilder.toString());
+            }
+        })));
+
+        if (mNext != null) {
+            mNext.println(priority, tag, msg, tr);
+        }
+    }
+
+    public LogNode getNext() {
+        return mNext;
+    }
+
+    public void setNext(LogNode node) {
+        mNext = node;
+    }
+
+    /** Takes a string and adds to it, with a separator, if the bit to be added isn't null. Since
+     * the logger takes so many arguments that might be null, this method helps cut out some of the
+     * agonizing tedium of writing the same 3 lines over and over.
+     * @param source StringBuilder containing the text to append to.
+     * @param addStr The String to append
+     * @param delimiter The String to separate the source and appended strings. A tab or comma,
+     *                  for instance.
+     * @return The fully concatenated String as a StringBuilder
+     */
+    private StringBuilder appendIfNotNull(StringBuilder source, String addStr, String delimiter) {
+        if (addStr != null) {
+            if (addStr.length() == 0) {
+                delimiter = "";
+            }
+
+            return source.append(addStr).append(delimiter);
+        }
+        return source;
+    }
+
+    // The next LogNode in the chain.
+    LogNode mNext;
+
+    /** Outputs the string as a new line of log data in the LogView. */
+    public void appendToLog(String s) {
+        append("\n" + s);
+    }
+
+
+}
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/common/logger/LogWrapper.java b/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/common/logger/LogWrapper.java
new file mode 100644
index 0000000..16a9e7b
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/common/logger/LogWrapper.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+import android.util.Log;
+
+/**
+ * Helper class which wraps Android's native Log utility in the Logger interface.  This way
+ * normal DDMS output can be one of the many targets receiving and outputting logs simultaneously.
+ */
+public class LogWrapper implements LogNode {
+
+    // For piping:  The next node to receive Log data after this one has done its work.
+    private LogNode mNext;
+
+    /**
+     * Returns the next LogNode in the linked list.
+     */
+    public LogNode getNext() {
+        return mNext;
+    }
+
+    /**
+     * Sets the LogNode data will be sent to..
+     */
+    public void setNext(LogNode node) {
+        mNext = node;
+    }
+
+    /**
+     * Prints data out to the console using Android's native log mechanism.
+     * @param priority Log level of the data being logged.  Verbose, Error, etc.
+     * @param tag Tag for for the log data.  Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    @Override
+    public void println(int priority, String tag, String msg, Throwable tr) {
+        // There actually are log methods that don't take a msg parameter.  For now,
+        // if that's the case, just convert null to the empty string and move on.
+        String useMsg = msg;
+        if (useMsg == null) {
+            useMsg = "";
+        }
+
+        // If an exeption was provided, convert that exception to a usable string and attach
+        // it to the end of the msg method.
+        if (tr != null) {
+            msg += "\n" + Log.getStackTraceString(tr);
+        }
+
+        // This is functionally identical to Log.x(tag, useMsg);
+        // For instance, if priority were Log.VERBOSE, this would be the same as Log.v(tag, useMsg)
+        Log.println(priority, tag, useMsg);
+
+        // If this isn't the last node in the chain, move things along.
+        if (mNext != null) {
+            mNext.println(priority, tag, msg, tr);
+        }
+    }
+}
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java b/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java
new file mode 100644
index 0000000..19967dc
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Simple {@link LogNode} filter, removes everything except the message.
+ * Useful for situations like on-screen log output where you don't want a lot of metadata displayed,
+ * just easy-to-read message updates as they're happening.
+ */
+public class MessageOnlyLogFilter implements LogNode {
+
+    LogNode mNext;
+
+    /**
+     * Takes the "next" LogNode as a parameter, to simplify chaining.
+     *
+     * @param next The next LogNode in the pipeline.
+     */
+    public MessageOnlyLogFilter(LogNode next) {
+        mNext = next;
+    }
+
+    public MessageOnlyLogFilter() {
+    }
+
+    @Override
+    public void println(int priority, String tag, String msg, Throwable tr) {
+        if (mNext != null) {
+            getNext().println(Log.NONE, null, msg, null);
+        }
+    }
+
+    /**
+     * Returns the next LogNode in the chain.
+     */
+    public LogNode getNext() {
+        return mNext;
+    }
+
+    /**
+     * Sets the LogNode data will be sent to..
+     */
+    public void setNext(LogNode node) {
+        mNext = node;
+    }
+
+}
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/drawable-hdpi/ic_launcher.png b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/drawable-hdpi/ic_launcher.png
new file mode 100644
index 0000000..9114e44
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/drawable-hdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/drawable-hdpi/tile.9.png b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/drawable-hdpi/tile.9.png
new file mode 100644
index 0000000..1358628
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/drawable-hdpi/tile.9.png
Binary files differ
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/drawable-mdpi/ic_launcher.png b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/drawable-mdpi/ic_launcher.png
new file mode 100644
index 0000000..604fbd8
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/drawable-mdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/drawable-xhdpi/ic_launcher.png b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/drawable-xhdpi/ic_launcher.png
new file mode 100644
index 0000000..9e58d22
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/drawable-xhdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/drawable-xxhdpi/card_background.png b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/drawable-xxhdpi/card_background.png
new file mode 100644
index 0000000..86a7ba7
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/drawable-xxhdpi/card_background.png
Binary files differ
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/drawable-xxhdpi/ic_launcher.png b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/drawable-xxhdpi/ic_launcher.png
new file mode 100644
index 0000000..c550c04
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/drawable-xxhdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/layout-w720dp/activity_main.xml b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/layout-w720dp/activity_main.xml
new file mode 100755
index 0000000..c9a52f6
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/layout-w720dp/activity_main.xml
@@ -0,0 +1,73 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+<LinearLayout
+      xmlns:android="http://schemas.android.com/apk/res/android"
+      android:orientation="horizontal"
+      android:layout_width="match_parent"
+      android:layout_height="match_parent"
+      android:id="@+id/sample_main_layout">
+
+    <LinearLayout
+          android:id="@+id/sample_output"
+          android:layout_width="0px"
+          android:layout_height="match_parent"
+          android:layout_weight="1"
+          android:orientation="vertical">
+
+        <FrameLayout
+              style="@style/Widget.SampleMessageTile"
+              android:layout_width="match_parent"
+              android:layout_height="wrap_content">
+
+            <TextView
+                  style="@style/Widget.SampleMessage"
+                  android:layout_width="match_parent"
+                  android:layout_height="wrap_content"
+                  android:paddingLeft="@dimen/margin_medium"
+                  android:paddingRight="@dimen/margin_medium"
+                  android:paddingTop="@dimen/margin_large"
+                  android:paddingBottom="@dimen/margin_large"
+                  android:text="@string/intro_message" />
+        </FrameLayout>
+
+        <View
+              android:layout_width="match_parent"
+              android:layout_height="1dp"
+              android:background="@android:color/darker_gray" />
+
+        <fragment
+              android:name="com.example.android.common.logger.LogFragment"
+              android:id="@+id/log_fragment"
+              android:layout_width="match_parent"
+              android:layout_height="0px"
+              android:layout_weight="1" />
+
+    </LinearLayout>
+
+    <View
+          android:layout_width="1dp"
+          android:layout_height="match_parent"
+          android:background="@android:color/darker_gray" />
+
+    <FrameLayout
+          android:id="@+id/sample_content_fragment"
+          android:layout_weight="2"
+          android:layout_width="0px"
+          android:layout_height="match_parent" />
+
+</LinearLayout>
+
+
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/layout/activity_main.xml b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/layout/activity_main.xml
new file mode 100755
index 0000000..1ae4f98
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/layout/activity_main.xml
@@ -0,0 +1,65 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+<LinearLayout
+      xmlns:android="http://schemas.android.com/apk/res/android"
+      android:orientation="vertical"
+      android:layout_width="match_parent"
+      android:layout_height="match_parent"
+      android:id="@+id/sample_main_layout">
+
+    <ViewAnimator
+          android:id="@+id/sample_output"
+          android:layout_width="match_parent"
+          android:layout_height="0px"
+          android:layout_weight="1">
+
+        <ScrollView
+              style="@style/Widget.SampleMessageTile"
+              android:layout_width="match_parent"
+              android:layout_height="match_parent">
+
+            <TextView
+                  style="@style/Widget.SampleMessage"
+                  android:layout_width="match_parent"
+                  android:layout_height="wrap_content"
+                  android:paddingLeft="@dimen/horizontal_page_margin"
+                  android:paddingRight="@dimen/horizontal_page_margin"
+                  android:paddingTop="@dimen/vertical_page_margin"
+                  android:paddingBottom="@dimen/vertical_page_margin"
+                  android:text="@string/intro_message" />
+        </ScrollView>
+
+        <fragment
+              android:name="com.example.android.common.logger.LogFragment"
+              android:id="@+id/log_fragment"
+              android:layout_width="match_parent"
+              android:layout_height="match_parent" />
+
+    </ViewAnimator>
+
+    <View
+          android:layout_width="match_parent"
+          android:layout_height="1dp"
+          android:background="@android:color/darker_gray" />
+
+    <FrameLayout
+          android:id="@+id/sample_content_fragment"
+          android:layout_weight="2"
+          android:layout_width="match_parent"
+          android:layout_height="0px" />
+
+</LinearLayout>
+
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/layout/main_fragment.xml b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/layout/main_fragment.xml
new file mode 100644
index 0000000..1e3886c
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/layout/main_fragment.xml
@@ -0,0 +1,64 @@
+<!--
+Copyright (C) 2013 The Android Open Source Project
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+<FrameLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="380dp"
+    android:layout_height="242.25dp"
+    android:layout_gravity="center"
+    android:layout_margin="20dp">
+    <ImageView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:src="@drawable/card_background"
+        />
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical"
+        android:padding="20dp"
+        android:layout_gravity="center"
+        android:clickable="true">
+        <TextView
+            android:id="@+id/card_title"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/card_title"
+            android:fontFamily="sans-serif-condensed"
+            android:textStyle="bold"
+            android:textSize="32dp"
+            />
+        <TextView
+            android:id="@+id/card_account_label"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/account_number"
+            android:fontFamily="sans-serif"
+            android:textStyle="bold"
+            android:textSize="18dp"
+            android:layout_marginTop="40dp"
+            />
+        <TextView
+            android:id="@+id/card_account_field"
+            android:width="360dp"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:fontFamily="sans-serif-condensed"
+            android:textStyle="bold"
+            android:textSize="42dp"
+            android:singleLine="true"
+            />
+    </LinearLayout>
+</FrameLayout>
\ No newline at end of file
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/menu/main.xml b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/menu/main.xml
new file mode 100644
index 0000000..b49c2c5
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/menu/main.xml
@@ -0,0 +1,21 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:id="@+id/menu_toggle_log"
+          android:showAsAction="always"
+          android:title="@string/sample_show_log" />
+</menu>
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/values-sw600dp/template-dimens.xml b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/values-sw600dp/template-dimens.xml
new file mode 100644
index 0000000..22074a2
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/values-sw600dp/template-dimens.xml
@@ -0,0 +1,24 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <!-- Semantic definitions -->
+
+    <dimen name="horizontal_page_margin">@dimen/margin_huge</dimen>
+    <dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
+
+</resources>
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/values-sw600dp/template-styles.xml b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/values-sw600dp/template-styles.xml
new file mode 100644
index 0000000..03d1974
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/values-sw600dp/template-styles.xml
@@ -0,0 +1,25 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <style name="Widget.SampleMessage">
+        <item name="android:textAppearance">?android:textAppearanceLarge</item>
+        <item name="android:lineSpacingMultiplier">1.2</item>
+        <item name="android:shadowDy">-6.5</item>
+    </style>
+
+</resources>
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/values/base-strings.xml b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/values/base-strings.xml
new file mode 100644
index 0000000..ac12480
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/values/base-strings.xml
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+
+
+<resources>
+    <string name="app_name">CardReader</string>
+    <string name="intro_message">
+        <![CDATA[
+        
+            
+            This sample demonstrates how to implement a low-level NFC card reader, for reading cards
+            that do not contain NDEF or Android Beam data. This sample is designed to read the virtual
+            loyalty card implemented in the "CardEmulation" sample.\n\n
+
+            In particular, this sample demonstrates how to disable Android Beam, select which AIDs the
+            reader is interested, and establish communication with the card
+            
+        
+        ]]>
+    </string>
+</resources>
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/values/strings.xml b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/values/strings.xml
new file mode 100755
index 0000000..7b9d9ec
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/values/strings.xml
@@ -0,0 +1,19 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+<resources>
+    <string name="sample_show_log">Show Log</string>
+    <string name="sample_hide_log">Hide Log</string>
+</resources>
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/values/template-dimens.xml b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/values/template-dimens.xml
new file mode 100644
index 0000000..39e710b
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/values/template-dimens.xml
@@ -0,0 +1,32 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <!-- Define standard dimensions to comply with Holo-style grids and rhythm. -->
+
+    <dimen name="margin_tiny">4dp</dimen>
+    <dimen name="margin_small">8dp</dimen>
+    <dimen name="margin_medium">16dp</dimen>
+    <dimen name="margin_large">32dp</dimen>
+    <dimen name="margin_huge">64dp</dimen>
+
+    <!-- Semantic definitions -->
+
+    <dimen name="horizontal_page_margin">@dimen/margin_medium</dimen>
+    <dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
+
+</resources>
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/values/template-styles.xml b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/values/template-styles.xml
new file mode 100644
index 0000000..404623e
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/values/template-styles.xml
@@ -0,0 +1,42 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <!-- Activity themes -->
+
+    <style name="Theme.Base" parent="android:Theme.Holo.Light" />
+
+    <style name="Theme.Sample" parent="Theme.Base" />
+
+    <style name="AppTheme" parent="Theme.Sample" />
+    <!-- Widget styling -->
+
+    <style name="Widget" />
+
+    <style name="Widget.SampleMessage">
+        <item name="android:textAppearance">?android:textAppearanceMedium</item>
+        <item name="android:lineSpacingMultiplier">1.1</item>
+    </style>
+
+    <style name="Widget.SampleMessageTile">
+        <item name="android:background">@drawable/tile</item>
+        <item name="android:shadowColor">#7F000000</item>
+        <item name="android:shadowDy">-3.5</item>
+        <item name="android:shadowRadius">2</item>
+    </style>
+
+</resources>
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/xml/nfc_tech_filter.xml b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/xml/nfc_tech_filter.xml
new file mode 100644
index 0000000..dcfc979
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/src/main/res/xml/nfc_tech_filter.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- This file is used as part of the filter for incoming NFC TECH_DISCOVERED intents. -->
+<resources xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- Android's host card emulation feature only supports the IsoDep protocol. -->
+    <tech-list>
+        <tech>android.nfc.tech.IsoDep</tech>
+    </tech-list>
+</resources>
\ No newline at end of file
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/tests/AndroidManifest.xml b/prebuilts/gradle/CardReader/CardReaderSample/tests/AndroidManifest.xml
new file mode 100644
index 0000000..1098859
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/tests/AndroidManifest.xml
@@ -0,0 +1,61 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+
+
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Copyright (C) 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+<!-- package name must be unique so suffix with "tests" so package loader doesn't ignore us -->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.example.android.cardreader.tests"
+          android:versionCode="1"
+          android:versionName="1.0">
+
+    <uses-sdk
+            android:minSdkVersion="19"
+            android:targetSdkVersion="19" />
+
+    <!-- We add an application tag here just so that we can indicate that
+         this package needs to link against the android.test library,
+         which is needed when building test cases. -->
+    <application>
+        <uses-library android:name="android.test.runner" />
+    </application>
+
+    <!--
+    Specifies the instrumentation test runner used to run the tests.
+    -->
+    <instrumentation
+            android:name="android.test.InstrumentationTestRunner"
+            android:targetPackage="com.example.android.cardreader"
+            android:label="Tests for com.example.android.cardreader" />
+
+</manifest>
\ No newline at end of file
diff --git a/prebuilts/gradle/CardReader/CardReaderSample/tests/src/com/example/android/cardreader/tests/SampleTests.java b/prebuilts/gradle/CardReader/CardReaderSample/tests/src/com/example/android/cardreader/tests/SampleTests.java
new file mode 100644
index 0000000..d9d2cc5
--- /dev/null
+++ b/prebuilts/gradle/CardReader/CardReaderSample/tests/src/com/example/android/cardreader/tests/SampleTests.java
@@ -0,0 +1,110 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+
+/*
+* Copyright (C) 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*      http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+package com.example.android.cardreader.tests;
+
+import com.example.android.cardreader.*;
+
+import android.test.ActivityInstrumentationTestCase2;
+
+/**
+* Tests for CardReader sample.
+*/
+public class SampleTests extends ActivityInstrumentationTestCase2<MainActivity> {
+
+    private MainActivity mTestActivity;
+    private CardReaderFragment mTestFragment;
+
+    public SampleTests() {
+        super(MainActivity.class);
+    }
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+
+        // Starts the activity under test using the default Intent with:
+        // action = {@link Intent#ACTION_MAIN}
+        // flags = {@link Intent#FLAG_ACTIVITY_NEW_TASK}
+        // All other fields are null or empty.
+        mTestActivity = getActivity();
+        mTestFragment = (CardReaderFragment)
+            mTestActivity.getSupportFragmentManager().getFragments().get(1);
+    }
+
+    /**
+    * Test if the test fixture has been set up correctly.
+    */
+    public void testPreconditions() {
+        //Try to add a message to add context to your assertions. These messages will be shown if
+        //a tests fails and make it easy to understand why a test failed
+        assertNotNull("mTestActivity is null", mTestActivity);
+        assertNotNull("mTestFragment is null", mTestFragment);
+    }
+
+    /**
+     * Test building SELECT APDU from AID string.
+     */
+    public void testBuildSelectApdu() {
+        final String aid = "1234";
+        final byte[] expectedResult = {(byte) 0x00, (byte) 0xA4, 04, (byte) 0x00, (byte) 0x02,
+                (byte) 0x12, (byte) 0x34};
+        final byte[] result = LoyaltyCardReader.BuildSelectApdu(aid);
+
+        assertEquals(expectedResult.length, result.length);
+        for (int i = 0; i < expectedResult.length; i++) {
+            assertEquals(expectedResult[i], result[i]);
+        }
+    }
+
+    /**
+     * Test converting from a hex string to binary.
+     */
+    public void testHexToBinary() {
+        final byte[] testData = {(byte) 0xc0, (byte) 0xff, (byte) 0xee};
+        final byte[] output = LoyaltyCardReader.HexStringToByteArray("C0FFEE");
+        for (int i = 0; i < testData.length; i++) {
+            assertEquals(testData[i], output[i]);
+        }
+    }
+
+    /**
+     * Test converting from binary to a hex string
+     */
+    public void testBinaryToHex() {
+        final byte[] input = {(byte) 0xc0, (byte) 0xff, (byte) 0xee};
+        final String output = LoyaltyCardReader.ByteArrayToHexString(input);
+        assertEquals("C0FFEE", output);
+    }
+
+}
\ No newline at end of file
diff --git a/prebuilts/gradle/CardReader/README.txt b/prebuilts/gradle/CardReader/README.txt
new file mode 100644
index 0000000..9616c58
--- /dev/null
+++ b/prebuilts/gradle/CardReader/README.txt
@@ -0,0 +1,18 @@
+Build Instructions
+-------------------
+
+This sample uses the Gradle build system. To build this project, use the
+"gradlew build" command or use "Import Project" in Android Studio.
+
+To see a list of all available commands, run "gradlew tasks".
+
+Dependencies
+-------------
+
+- Android SDK Build-tools v18.1
+- Android Support Repository v2
+
+Dependencies are available for download via the Android SDK Manager.
+
+Android Studio is available for download at:
+    http://developer.android.com/sdk/installing/studio.html
diff --git a/prebuilts/gradle/CardReader/build.gradle b/prebuilts/gradle/CardReader/build.gradle
new file mode 100644
index 0000000..5cf5d3d
--- /dev/null
+++ b/prebuilts/gradle/CardReader/build.gradle
@@ -0,0 +1,14 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/prebuilts/gradle/CardReader/gradle/wrapper/gradle-wrapper.jar b/prebuilts/gradle/CardReader/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..8c0fb64
--- /dev/null
+++ b/prebuilts/gradle/CardReader/gradle/wrapper/gradle-wrapper.jar
Binary files differ
diff --git a/prebuilts/gradle/CardReader/gradle/wrapper/gradle-wrapper.properties b/prebuilts/gradle/CardReader/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..1cfd865
--- /dev/null
+++ b/prebuilts/gradle/CardReader/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Thu Jan 02 15:37:05 PST 2014
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=http\://services.gradle.org/distributions/gradle-1.8-all.zip
diff --git a/prebuilts/gradle/CardReader/gradlew b/prebuilts/gradle/CardReader/gradlew
new file mode 100755
index 0000000..91a7e26
--- /dev/null
+++ b/prebuilts/gradle/CardReader/gradlew
@@ -0,0 +1,164 @@
+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+esac
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched.
+if $cygwin ; then
+    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+fi
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >&-
+APP_HOME="`pwd -P`"
+cd "$SAVED" >&-
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+    JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
diff --git a/prebuilts/gradle/CardReader/gradlew.bat b/prebuilts/gradle/CardReader/gradlew.bat
new file mode 100644
index 0000000..aec9973
--- /dev/null
+++ b/prebuilts/gradle/CardReader/gradlew.bat
@@ -0,0 +1,90 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windowz variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+if "%@eval[2+2]" == "4" goto 4NT_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+goto execute
+
+:4NT_args
+@rem Get arguments from the 4NT Shell from JP Software
+set CMD_LINE_ARGS=%$
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/prebuilts/gradle/CardReader/settings.gradle b/prebuilts/gradle/CardReader/settings.gradle
new file mode 100644
index 0000000..d1d7333
--- /dev/null
+++ b/prebuilts/gradle/CardReader/settings.gradle
@@ -0,0 +1,4 @@
+
+
+
+include 'CardReaderSample'
diff --git a/prebuilts/gradle/CustomChoiceList/CustomChoiceListSample/build.gradle b/prebuilts/gradle/CustomChoiceList/CustomChoiceListSample/build.gradle
index 32b18d6..1d9eedf 100644
--- a/prebuilts/gradle/CustomChoiceList/CustomChoiceListSample/build.gradle
+++ b/prebuilts/gradle/CustomChoiceList/CustomChoiceListSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,7 +15,7 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 3
-    compile "com.android.support:support-v4:18.0.+"
+    compile "com.android.support:support-v4:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -28,7 +28,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/CustomNotifications/CustomNotificationsSample/build.gradle b/prebuilts/gradle/CustomNotifications/CustomNotificationsSample/build.gradle
index 7870f12..5681239 100644
--- a/prebuilts/gradle/CustomNotifications/CustomNotificationsSample/build.gradle
+++ b/prebuilts/gradle/CustomNotifications/CustomNotificationsSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,7 +15,7 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 4
-    compile "com.android.support:support-v4:18.0.+"
+    compile "com.android.support:support-v4:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -28,7 +28,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/DoneBar/DoneBarSample/build.gradle b/prebuilts/gradle/DoneBar/DoneBarSample/build.gradle
index a36923c..506795f 100644
--- a/prebuilts/gradle/DoneBar/DoneBarSample/build.gradle
+++ b/prebuilts/gradle/DoneBar/DoneBarSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,7 +15,7 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 14
-    compile "com.android.support:support-v13:18.0.+"
+    compile "com.android.support:support-v13:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -28,7 +28,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/HorizontalPaging/HorizontalPagingSample/build.gradle b/prebuilts/gradle/HorizontalPaging/HorizontalPagingSample/build.gradle
index 450bf36..6bbb9ea 100644
--- a/prebuilts/gradle/HorizontalPaging/HorizontalPagingSample/build.gradle
+++ b/prebuilts/gradle/HorizontalPaging/HorizontalPagingSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,8 +15,8 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 11
-    compile "com.android.support:support-v4:18.0.+"
-    compile "com.android.support:gridlayout-v7:18.0.+"
+    compile "com.android.support:support-v4:19.0.+"
+    compile "com.android.support:gridlayout-v7:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -29,7 +29,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/ImmersiveMode/ImmersiveModeSample/build.gradle b/prebuilts/gradle/ImmersiveMode/ImmersiveModeSample/build.gradle
index 7870f12..5681239 100644
--- a/prebuilts/gradle/ImmersiveMode/ImmersiveModeSample/build.gradle
+++ b/prebuilts/gradle/ImmersiveMode/ImmersiveModeSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,7 +15,7 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 4
-    compile "com.android.support:support-v4:18.0.+"
+    compile "com.android.support:support-v4:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -28,7 +28,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/MediaRecorder/MediaRecorderSample/build.gradle b/prebuilts/gradle/MediaRecorder/MediaRecorderSample/build.gradle
index a36923c..506795f 100644
--- a/prebuilts/gradle/MediaRecorder/MediaRecorderSample/build.gradle
+++ b/prebuilts/gradle/MediaRecorder/MediaRecorderSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,7 +15,7 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 14
-    compile "com.android.support:support-v13:18.0.+"
+    compile "com.android.support:support-v13:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -28,7 +28,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/NetworkConnect/NetworkConnectSample/build.gradle b/prebuilts/gradle/NetworkConnect/NetworkConnectSample/build.gradle
index dd1bd91..e88b9ff 100644
--- a/prebuilts/gradle/NetworkConnect/NetworkConnectSample/build.gradle
+++ b/prebuilts/gradle/NetworkConnect/NetworkConnectSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,8 +15,8 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 8
-    compile "com.android.support:support-v4:18.0.+"
-    compile "com.android.support:gridlayout-v7:18.0.+"
+    compile "com.android.support:support-v4:19.0.+"
+    compile "com.android.support:gridlayout-v7:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -29,7 +29,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/README.txt b/prebuilts/gradle/RenderScriptIntrinsic/README.txt
new file mode 100644
index 0000000..9616c58
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/README.txt
@@ -0,0 +1,18 @@
+Build Instructions
+-------------------
+
+This sample uses the Gradle build system. To build this project, use the
+"gradlew build" command or use "Import Project" in Android Studio.
+
+To see a list of all available commands, run "gradlew tasks".
+
+Dependencies
+-------------
+
+- Android SDK Build-tools v18.1
+- Android Support Repository v2
+
+Dependencies are available for download via the Android SDK Manager.
+
+Android Studio is available for download at:
+    http://developer.android.com/sdk/installing/studio.html
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/build.gradle b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/build.gradle
new file mode 100644
index 0000000..4240bc2
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/build.gradle
@@ -0,0 +1,67 @@
+
+
+
+buildscript {
+    repositories {
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:0.8.+'
+    }
+}
+
+apply plugin: 'android'
+
+dependencies {
+    // Add the support lib that is appropriate for SDK 8
+    compile "com.android.support:support-v4:19.0.+"
+    compile "com.android.support:gridlayout-v7:19.0.+"
+    compile files('renderscript-v8.jar')
+}
+
+// The sample build uses multiple directories to
+// keep boilerplate and common code separate from
+// the main sample code.
+List<String> dirs = [
+    'main',     // main sample code; look here for the interesting stuff.
+    'common',   // components that are reused by multiple samples
+    'template'] // boilerplate code that is generated by the sample template process
+
+android {
+    compileSdkVersion 19
+    buildToolsVersion "19.0.1"
+
+    sourceSets {
+        main {
+            dirs.each { dir ->
+                java.srcDirs "src/${dir}/java"
+                res.srcDirs "src/${dir}/res"
+            }
+        }
+        instrumentTest.setRoot('tests')
+        instrumentTest.java.srcDirs = ['tests/src']
+
+        defaultConfig {
+        
+        renderscriptTargetApi 18
+        renderscriptSupportMode true
+    
+        }
+    }
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/AndroidManifest.xml b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..566ef8a
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/AndroidManifest.xml
@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="UTF-8"?><!--
+ Copyright 2014 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.android.renderscriptintrinsic"
+    android:versionCode="1"
+    android:versionName="1.0">
+
+    <uses-sdk
+        android:minSdkVersion="8"
+        android:targetSdkVersion="19" />
+
+    <application
+        android:allowBackup="true"
+        android:label="RenderScriptIntrinsic"
+        android:icon="@drawable/ic_launcher"
+        android:theme="@style/AppTheme">
+
+        <activity
+            android:name=".MainActivity"
+            android:label="RenderScriptIntrinsic"
+            android:theme="@style/FullscreenTheme">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+
+</manifest>
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/common/logger/Log.java b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/common/logger/Log.java
new file mode 100644
index 0000000..17503c5
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/common/logger/Log.java
@@ -0,0 +1,236 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Helper class for a list (or tree) of LoggerNodes.
+ *
+ * <p>When this is set as the head of the list,
+ * an instance of it can function as a drop-in replacement for {@link android.util.Log}.
+ * Most of the methods in this class server only to map a method call in Log to its equivalent
+ * in LogNode.</p>
+ */
+public class Log {
+    // Grabbing the native values from Android's native logging facilities,
+    // to make for easy migration and interop.
+    public static final int NONE = -1;
+    public static final int VERBOSE = android.util.Log.VERBOSE;
+    public static final int DEBUG = android.util.Log.DEBUG;
+    public static final int INFO = android.util.Log.INFO;
+    public static final int WARN = android.util.Log.WARN;
+    public static final int ERROR = android.util.Log.ERROR;
+    public static final int ASSERT = android.util.Log.ASSERT;
+
+    // Stores the beginning of the LogNode topology.
+    private static LogNode mLogNode;
+
+    /**
+     * Returns the next LogNode in the linked list.
+     */
+    public static LogNode getLogNode() {
+        return mLogNode;
+    }
+
+    /**
+     * Sets the LogNode data will be sent to.
+     */
+    public static void setLogNode(LogNode node) {
+        mLogNode = node;
+    }
+
+    /**
+     * Instructs the LogNode to print the log data provided. Other LogNodes can
+     * be chained to the end of the LogNode as desired.
+     *
+     * @param priority Log level of the data being logged. Verbose, Error, etc.
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void println(int priority, String tag, String msg, Throwable tr) {
+        if (mLogNode != null) {
+            mLogNode.println(priority, tag, msg, tr);
+        }
+    }
+
+    /**
+     * Instructs the LogNode to print the log data provided. Other LogNodes can
+     * be chained to the end of the LogNode as desired.
+     *
+     * @param priority Log level of the data being logged. Verbose, Error, etc.
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     */
+    public static void println(int priority, String tag, String msg) {
+        println(priority, tag, msg, null);
+    }
+
+   /**
+     * Prints a message at VERBOSE priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void v(String tag, String msg, Throwable tr) {
+        println(VERBOSE, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at VERBOSE priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void v(String tag, String msg) {
+        v(tag, msg, null);
+    }
+
+
+    /**
+     * Prints a message at DEBUG priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void d(String tag, String msg, Throwable tr) {
+        println(DEBUG, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at DEBUG priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void d(String tag, String msg) {
+        d(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at INFO priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void i(String tag, String msg, Throwable tr) {
+        println(INFO, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at INFO priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void i(String tag, String msg) {
+        i(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at WARN priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void w(String tag, String msg, Throwable tr) {
+        println(WARN, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at WARN priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void w(String tag, String msg) {
+        w(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at WARN priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void w(String tag, Throwable tr) {
+        w(tag, null, tr);
+    }
+
+    /**
+     * Prints a message at ERROR priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void e(String tag, String msg, Throwable tr) {
+        println(ERROR, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at ERROR priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void e(String tag, String msg) {
+        e(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at ASSERT priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void wtf(String tag, String msg, Throwable tr) {
+        println(ASSERT, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at ASSERT priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void wtf(String tag, String msg) {
+        wtf(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at ASSERT priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void wtf(String tag, Throwable tr) {
+        wtf(tag, null, tr);
+    }
+}
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/common/logger/LogFragment.java b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/common/logger/LogFragment.java
new file mode 100644
index 0000000..b302acd
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/common/logger/LogFragment.java
@@ -0,0 +1,109 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.common.logger;
+
+import android.graphics.Typeface;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.view.Gravity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ScrollView;
+
+/**
+ * Simple fraggment which contains a LogView and uses is to output log data it receives
+ * through the LogNode interface.
+ */
+public class LogFragment extends Fragment {
+
+    private LogView mLogView;
+    private ScrollView mScrollView;
+
+    public LogFragment() {}
+
+    public View inflateViews() {
+        mScrollView = new ScrollView(getActivity());
+        ViewGroup.LayoutParams scrollParams = new ViewGroup.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                ViewGroup.LayoutParams.MATCH_PARENT);
+        mScrollView.setLayoutParams(scrollParams);
+
+        mLogView = new LogView(getActivity());
+        ViewGroup.LayoutParams logParams = new ViewGroup.LayoutParams(scrollParams);
+        logParams.height = ViewGroup.LayoutParams.WRAP_CONTENT;
+        mLogView.setLayoutParams(logParams);
+        mLogView.setClickable(true);
+        mLogView.setFocusable(true);
+        mLogView.setTypeface(Typeface.MONOSPACE);
+
+        // Want to set padding as 16 dips, setPadding takes pixels.  Hooray math!
+        int paddingDips = 16;
+        double scale = getResources().getDisplayMetrics().density;
+        int paddingPixels = (int) ((paddingDips * (scale)) + .5);
+        mLogView.setPadding(paddingPixels, paddingPixels, paddingPixels, paddingPixels);
+        mLogView.setCompoundDrawablePadding(paddingPixels);
+
+        mLogView.setGravity(Gravity.BOTTOM);
+        mLogView.setTextAppearance(getActivity(), android.R.style.TextAppearance_Holo_Medium);
+
+        mScrollView.addView(mLogView);
+        return mScrollView;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+
+        View result = inflateViews();
+
+        mLogView.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {}
+
+            @Override
+            public void afterTextChanged(Editable s) {
+                mScrollView.fullScroll(ScrollView.FOCUS_DOWN);
+            }
+        });
+        return result;
+    }
+
+    public LogView getLogView() {
+        return mLogView;
+    }
+}
\ No newline at end of file
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/common/logger/LogNode.java b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/common/logger/LogNode.java
new file mode 100644
index 0000000..bc37cab
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/common/logger/LogNode.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Basic interface for a logging system that can output to one or more targets.
+ * Note that in addition to classes that will output these logs in some format,
+ * one can also implement this interface over a filter and insert that in the chain,
+ * such that no targets further down see certain data, or see manipulated forms of the data.
+ * You could, for instance, write a "ToHtmlLoggerNode" that just converted all the log data
+ * it received to HTML and sent it along to the next node in the chain, without printing it
+ * anywhere.
+ */
+public interface LogNode {
+
+    /**
+     * Instructs first LogNode in the list to print the log data provided.
+     * @param priority Log level of the data being logged.  Verbose, Error, etc.
+     * @param tag Tag for for the log data.  Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public void println(int priority, String tag, String msg, Throwable tr);
+
+}
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/common/logger/LogView.java b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/common/logger/LogView.java
new file mode 100644
index 0000000..c01542b
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/common/logger/LogView.java
@@ -0,0 +1,145 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+import android.app.Activity;
+import android.content.Context;
+import android.util.*;
+import android.widget.TextView;
+
+/** Simple TextView which is used to output log data received through the LogNode interface.
+*/
+public class LogView extends TextView implements LogNode {
+
+    public LogView(Context context) {
+        super(context);
+    }
+
+    public LogView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public LogView(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    /**
+     * Formats the log data and prints it out to the LogView.
+     * @param priority Log level of the data being logged.  Verbose, Error, etc.
+     * @param tag Tag for for the log data.  Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    @Override
+    public void println(int priority, String tag, String msg, Throwable tr) {
+
+        
+        String priorityStr = null;
+
+        // For the purposes of this View, we want to print the priority as readable text.
+        switch(priority) {
+            case android.util.Log.VERBOSE:
+                priorityStr = "VERBOSE";
+                break;
+            case android.util.Log.DEBUG:
+                priorityStr = "DEBUG";
+                break;
+            case android.util.Log.INFO:
+                priorityStr = "INFO";
+                break;
+            case android.util.Log.WARN:
+                priorityStr = "WARN";
+                break;
+            case android.util.Log.ERROR:
+                priorityStr = "ERROR";
+                break;
+            case android.util.Log.ASSERT:
+                priorityStr = "ASSERT";
+                break;
+            default:
+                break;
+        }
+
+        // Handily, the Log class has a facility for converting a stack trace into a usable string.
+        String exceptionStr = null;
+        if (tr != null) {
+            exceptionStr = android.util.Log.getStackTraceString(tr);
+        }
+
+        // Take the priority, tag, message, and exception, and concatenate as necessary
+        // into one usable line of text.
+        final StringBuilder outputBuilder = new StringBuilder();
+
+        String delimiter = "\t";
+        appendIfNotNull(outputBuilder, priorityStr, delimiter);
+        appendIfNotNull(outputBuilder, tag, delimiter);
+        appendIfNotNull(outputBuilder, msg, delimiter);
+        appendIfNotNull(outputBuilder, exceptionStr, delimiter);
+
+        // In case this was originally called from an AsyncTask or some other off-UI thread,
+        // make sure the update occurs within the UI thread.
+        ((Activity) getContext()).runOnUiThread( (new Thread(new Runnable() {
+            @Override
+            public void run() {
+                // Display the text we just generated within the LogView.
+                appendToLog(outputBuilder.toString());
+            }
+        })));
+
+        if (mNext != null) {
+            mNext.println(priority, tag, msg, tr);
+        }
+    }
+
+    public LogNode getNext() {
+        return mNext;
+    }
+
+    public void setNext(LogNode node) {
+        mNext = node;
+    }
+
+    /** Takes a string and adds to it, with a separator, if the bit to be added isn't null. Since
+     * the logger takes so many arguments that might be null, this method helps cut out some of the
+     * agonizing tedium of writing the same 3 lines over and over.
+     * @param source StringBuilder containing the text to append to.
+     * @param addStr The String to append
+     * @param delimiter The String to separate the source and appended strings. A tab or comma,
+     *                  for instance.
+     * @return The fully concatenated String as a StringBuilder
+     */
+    private StringBuilder appendIfNotNull(StringBuilder source, String addStr, String delimiter) {
+        if (addStr != null) {
+            if (addStr.length() == 0) {
+                delimiter = "";
+            }
+
+            return source.append(addStr).append(delimiter);
+        }
+        return source;
+    }
+
+    // The next LogNode in the chain.
+    LogNode mNext;
+
+    /** Outputs the string as a new line of log data in the LogView. */
+    public void appendToLog(String s) {
+        append("\n" + s);
+    }
+
+
+}
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/common/logger/LogWrapper.java b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/common/logger/LogWrapper.java
new file mode 100644
index 0000000..16a9e7b
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/common/logger/LogWrapper.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+import android.util.Log;
+
+/**
+ * Helper class which wraps Android's native Log utility in the Logger interface.  This way
+ * normal DDMS output can be one of the many targets receiving and outputting logs simultaneously.
+ */
+public class LogWrapper implements LogNode {
+
+    // For piping:  The next node to receive Log data after this one has done its work.
+    private LogNode mNext;
+
+    /**
+     * Returns the next LogNode in the linked list.
+     */
+    public LogNode getNext() {
+        return mNext;
+    }
+
+    /**
+     * Sets the LogNode data will be sent to..
+     */
+    public void setNext(LogNode node) {
+        mNext = node;
+    }
+
+    /**
+     * Prints data out to the console using Android's native log mechanism.
+     * @param priority Log level of the data being logged.  Verbose, Error, etc.
+     * @param tag Tag for for the log data.  Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    @Override
+    public void println(int priority, String tag, String msg, Throwable tr) {
+        // There actually are log methods that don't take a msg parameter.  For now,
+        // if that's the case, just convert null to the empty string and move on.
+        String useMsg = msg;
+        if (useMsg == null) {
+            useMsg = "";
+        }
+
+        // If an exeption was provided, convert that exception to a usable string and attach
+        // it to the end of the msg method.
+        if (tr != null) {
+            msg += "\n" + Log.getStackTraceString(tr);
+        }
+
+        // This is functionally identical to Log.x(tag, useMsg);
+        // For instance, if priority were Log.VERBOSE, this would be the same as Log.v(tag, useMsg)
+        Log.println(priority, tag, useMsg);
+
+        // If this isn't the last node in the chain, move things along.
+        if (mNext != null) {
+            mNext.println(priority, tag, msg, tr);
+        }
+    }
+}
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java
new file mode 100644
index 0000000..19967dc
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Simple {@link LogNode} filter, removes everything except the message.
+ * Useful for situations like on-screen log output where you don't want a lot of metadata displayed,
+ * just easy-to-read message updates as they're happening.
+ */
+public class MessageOnlyLogFilter implements LogNode {
+
+    LogNode mNext;
+
+    /**
+     * Takes the "next" LogNode as a parameter, to simplify chaining.
+     *
+     * @param next The next LogNode in the pipeline.
+     */
+    public MessageOnlyLogFilter(LogNode next) {
+        mNext = next;
+    }
+
+    public MessageOnlyLogFilter() {
+    }
+
+    @Override
+    public void println(int priority, String tag, String msg, Throwable tr) {
+        if (mNext != null) {
+            getNext().println(Log.NONE, null, msg, null);
+        }
+    }
+
+    /**
+     * Returns the next LogNode in the chain.
+     */
+    public LogNode getNext() {
+        return mNext;
+    }
+
+    /**
+     * Sets the LogNode data will be sent to..
+     */
+    public void setNext(LogNode node) {
+        mNext = node;
+    }
+
+}
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/renderscriptintrinsic/MainActivity.java b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/renderscriptintrinsic/MainActivity.java
new file mode 100644
index 0000000..4b6f5ce
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/renderscriptintrinsic/MainActivity.java
@@ -0,0 +1,370 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.renderscriptintrinsic;
+
+import android.app.Activity;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.widget.CompoundButton;
+import android.widget.CompoundButton.OnCheckedChangeListener;
+import android.widget.ImageView;
+import android.widget.RadioButton;
+import android.widget.SeekBar;
+import android.widget.SeekBar.OnSeekBarChangeListener;
+import android.support.v8.renderscript.*;
+
+public class MainActivity extends Activity {
+    /* Number of bitmaps that is used for renderScript thread and UI thread synchronization.
+       Ideally, this can be reduced to 2, however in some devices, 2 buffers still showing tierings on UI.
+       Investigating a root cause.
+     */
+    private final int NUM_BITMAPS = 3;
+    private int mCurrentBitmap = 0;
+    private Bitmap mBitmapIn;
+    private Bitmap[] mBitmapsOut;
+    private ImageView mImageView;
+
+    private RenderScript mRS;
+    private Allocation mInAllocation;
+    private Allocation[] mOutAllocations;
+
+    private ScriptIntrinsicBlur mScriptBlur;
+    private ScriptIntrinsicConvolve5x5 mScriptConvolve;
+    private ScriptIntrinsicColorMatrix mScriptMatrix;
+
+    private final int MODE_BLUR = 0;
+    private final int MODE_CONVOLVE = 1;
+    private final int MODE_COLORMATRIX = 2;
+
+    private int mFilterMode = MODE_BLUR;
+
+    private RenderScriptTask mLatestTask = null;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.main_layout);
+
+        /*
+         * Initialize UI
+         */
+
+        //Set up main image view
+        mBitmapIn = loadBitmap(R.drawable.data);
+        mBitmapsOut = new Bitmap[NUM_BITMAPS];
+        for (int i = 0; i < NUM_BITMAPS; ++i) {
+            mBitmapsOut[i] = Bitmap.createBitmap(mBitmapIn.getWidth(),
+                    mBitmapIn.getHeight(), mBitmapIn.getConfig());
+        }
+
+        mImageView = (ImageView) findViewById(R.id.imageView);
+        mImageView.setImageBitmap(mBitmapsOut[mCurrentBitmap]);
+        mCurrentBitmap += (mCurrentBitmap + 1) % NUM_BITMAPS;
+
+        //Set up seekbar
+        final SeekBar seekbar = (SeekBar) findViewById(R.id.seekBar1);
+        seekbar.setProgress(50);
+        seekbar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
+            public void onProgressChanged(SeekBar seekBar, int progress,
+                                          boolean fromUser) {
+                updateImage(progress);
+            }
+
+            @Override
+            public void onStartTrackingTouch(SeekBar seekBar) {
+            }
+
+            @Override
+            public void onStopTrackingTouch(SeekBar seekBar) {
+            }
+        });
+
+        //Setup effect selector
+        RadioButton radio0 = (RadioButton) findViewById(R.id.radio0);
+        radio0.setOnCheckedChangeListener(new OnCheckedChangeListener() {
+
+            @Override
+            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+                if (isChecked) {
+                    mFilterMode = MODE_BLUR;
+                    updateImage(seekbar.getProgress());
+                }
+            }
+        });
+        RadioButton radio1 = (RadioButton) findViewById(R.id.radio1);
+        radio1.setOnCheckedChangeListener(new OnCheckedChangeListener() {
+
+            @Override
+            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+                if (isChecked) {
+                    mFilterMode = MODE_CONVOLVE;
+                    updateImage(seekbar.getProgress());
+                }
+            }
+        });
+        RadioButton radio2 = (RadioButton) findViewById(R.id.radio2);
+        radio2.setOnCheckedChangeListener(new OnCheckedChangeListener() {
+
+            @Override
+            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+                if (isChecked) {
+                    mFilterMode = MODE_COLORMATRIX;
+                    updateImage(seekbar.getProgress());
+                }
+            }
+        });
+
+        /*
+         * Create renderScript
+         */
+        createScript();
+
+        /*
+         * Create thumbnails
+         */
+        createThumbnail();
+
+
+        /*
+         * Invoke renderScript kernel and update imageView
+         */
+        mFilterMode = MODE_BLUR;
+        updateImage(50);
+    }
+
+    private void createScript() {
+        mRS = RenderScript.create(this);
+
+        mInAllocation = Allocation.createFromBitmap(mRS, mBitmapIn);
+
+        mOutAllocations = new Allocation[NUM_BITMAPS];
+        for (int i = 0; i < NUM_BITMAPS; ++i) {
+            mOutAllocations[i] = Allocation.createFromBitmap(mRS, mBitmapsOut[i]);
+        }
+
+        /*
+        Create intrinsics.
+        RenderScript has built-in features such as blur, convolve filter etc.
+        These intrinsics are handy for specific operations without writing RenderScript kernel.
+        In the sample, it's creating blur, convolve and matrix intrinsics.
+         */
+
+        mScriptBlur = ScriptIntrinsicBlur.create(mRS, Element.U8_4(mRS));
+        mScriptConvolve = ScriptIntrinsicConvolve5x5.create(mRS,
+                Element.U8_4(mRS));
+        mScriptMatrix = ScriptIntrinsicColorMatrix.create(mRS,
+                Element.U8_4(mRS));
+    }
+
+    private void performFilter(Allocation inAllocation,
+                               Allocation outAllocation, Bitmap bitmapOut, float value) {
+        switch (mFilterMode) {
+            case MODE_BLUR:
+            /*
+             * Set blur kernel size
+             */
+                mScriptBlur.setRadius(value);
+
+            /*
+             * Invoke filter kernel
+             */
+                mScriptBlur.setInput(inAllocation);
+                mScriptBlur.forEach(outAllocation);
+                break;
+            case MODE_CONVOLVE: {
+                float f1 = value;
+                float f2 = 1.0f - f1;
+
+                // Emboss filter kernel
+                float coefficients[] = {-f1 * 2, 0, -f1, 0, 0, 0, -f2 * 2, -f2, 0,
+                        0, -f1, -f2, 1, f2, f1, 0, 0, f2, f2 * 2, 0, 0, 0, f1, 0,
+                        f1 * 2,};
+            /*
+             * Set kernel parameter
+             */
+                mScriptConvolve.setCoefficients(coefficients);
+
+            /*
+             * Invoke filter kernel
+             */
+                mScriptConvolve.setInput(inAllocation);
+                mScriptConvolve.forEach(outAllocation);
+                break;
+            }
+            case MODE_COLORMATRIX: {
+            /*
+             * Set HUE rotation matrix
+             * The matrix below performs a combined operation of,
+             * RGB->HSV transform * HUE rotation * HSV->RGB transform
+             */
+                float cos = (float) Math.cos((double) value);
+                float sin = (float) Math.sin((double) value);
+                Matrix3f mat = new Matrix3f();
+                mat.set(0, 0, (float) (.299 + .701 * cos + .168 * sin));
+                mat.set(1, 0, (float) (.587 - .587 * cos + .330 * sin));
+                mat.set(2, 0, (float) (.114 - .114 * cos - .497 * sin));
+                mat.set(0, 1, (float) (.299 - .299 * cos - .328 * sin));
+                mat.set(1, 1, (float) (.587 + .413 * cos + .035 * sin));
+                mat.set(2, 1, (float) (.114 - .114 * cos + .292 * sin));
+                mat.set(0, 2, (float) (.299 - .3 * cos + 1.25 * sin));
+                mat.set(1, 2, (float) (.587 - .588 * cos - 1.05 * sin));
+                mat.set(2, 2, (float) (.114 + .886 * cos - .203 * sin));
+                mScriptMatrix.setColorMatrix(mat);
+
+            /*
+             * Invoke filter kernel
+             */
+                mScriptMatrix.forEach(inAllocation, outAllocation);
+            }
+            break;
+        }
+
+        /*
+         * Copy to bitmap and invalidate image view
+         */
+        outAllocation.copyTo(bitmapOut);
+    }
+
+    /*
+    Convert seekBar progress parameter (0-100 in range) to parameter for each intrinsic filter.
+    (e.g. 1.0-25.0 in Blur filter)
+     */
+    private float getFilterParameter(int i) {
+        float f = 0.f;
+        switch (mFilterMode) {
+            case MODE_BLUR: {
+                final float max = 25.0f;
+                final float min = 1.f;
+                f = (float) ((max - min) * (i / 100.0) + min);
+            }
+            break;
+            case MODE_CONVOLVE: {
+                final float max = 2.f;
+                final float min = 0.f;
+                f = (float) ((max - min) * (i / 100.0) + min);
+            }
+            break;
+            case MODE_COLORMATRIX: {
+                final float max = (float) Math.PI;
+                final float min = (float) -Math.PI;
+                f = (float) ((max - min) * (i / 100.0) + min);
+            }
+            break;
+        }
+        return f;
+
+    }
+
+    /*
+     * In the AsyncTask, it invokes RenderScript intrinsics to do a filtering.
+     * After the filtering is done, an operation blocks at Allication.copyTo() in AsyncTask thread.
+     * Once all operation is finished at onPostExecute() in UI thread, it can invalidate and update ImageView UI.
+     */
+    private class RenderScriptTask extends AsyncTask<Float, Integer, Integer> {
+        Boolean issued = false;
+
+        protected Integer doInBackground(Float... values) {
+            int index = -1;
+            if (isCancelled() == false) {
+                issued = true;
+                index = mCurrentBitmap;
+
+                performFilter(mInAllocation, mOutAllocations[index], mBitmapsOut[index], values[0]);
+                mCurrentBitmap = (mCurrentBitmap + 1) % NUM_BITMAPS;
+            }
+            return index;
+        }
+
+        void updateView(Integer result) {
+            if (result != -1) {
+                // Request UI update
+                mImageView.setImageBitmap(mBitmapsOut[result]);
+                mImageView.invalidate();
+            }
+        }
+
+        protected void onPostExecute(Integer result) {
+            updateView(result);
+        }
+
+        protected void onCancelled(Integer result) {
+            if (issued) {
+                updateView(result);
+            }
+        }
+    }
+
+    /*
+    Invoke AsynchTask and cancel previous task.
+    When AsyncTasks are piled up (typically in slow device with heavy kernel),
+    Only the latest (and already started) task invokes RenderScript operation.
+     */
+    private void updateImage(int progress) {
+        float f = getFilterParameter(progress);
+
+        if (mLatestTask != null)
+            mLatestTask.cancel(false);
+        mLatestTask = new RenderScriptTask();
+
+        mLatestTask.execute(f);
+    }
+
+    /*
+    Helper to load Bitmap from resource
+     */
+    private Bitmap loadBitmap(int resource) {
+        final BitmapFactory.Options options = new BitmapFactory.Options();
+        options.inPreferredConfig = Bitmap.Config.ARGB_8888;
+        return BitmapFactory.decodeResource(getResources(), resource, options);
+    }
+
+    /*
+    Create thumbNail for UI. It invokes RenderScript kernel synchronously in UI-thread,
+    which is OK for small thumbnail (but not ideal).
+     */
+    private void createThumbnail() {
+        int width = 72;
+        int height = 96;
+        float scale = getResources().getDisplayMetrics().density;
+        int pixelsWidth = (int) (width * scale + 0.5f);
+        int pixelsHeight = (int) (height * scale + 0.5f);
+
+        //Temporary image
+        Bitmap tempBitmap = Bitmap.createScaledBitmap(mBitmapIn, pixelsWidth, pixelsHeight, false);
+        Allocation inAllocation = Allocation.createFromBitmap(mRS, tempBitmap);
+
+        //Create thumbnail with each RS intrinsic and set it to radio buttons
+        int[] modes = {MODE_BLUR, MODE_CONVOLVE, MODE_COLORMATRIX};
+        int[] ids = {R.id.radio0, R.id.radio1, R.id.radio2};
+        int[] parameter = {50, 100, 25};
+        for (int mode : modes) {
+            mFilterMode = mode;
+            float f = getFilterParameter(parameter[mode]);
+
+            Bitmap destBitpmap = Bitmap.createBitmap(tempBitmap.getWidth(),
+                    tempBitmap.getHeight(), tempBitmap.getConfig());
+            Allocation outAllocation = Allocation.createFromBitmap(mRS, destBitpmap);
+            performFilter(inAllocation, outAllocation, destBitpmap, f);
+
+            ThumbnailRadioButton button = (ThumbnailRadioButton) findViewById(ids[mode]);
+            button.setThumbnail(destBitpmap);
+        }
+    }
+}
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/renderscriptintrinsic/ThumbnailRadioButton.java b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/renderscriptintrinsic/ThumbnailRadioButton.java
new file mode 100644
index 0000000..160e970
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/java/com/example/android/renderscriptintrinsic/ThumbnailRadioButton.java
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.renderscriptintrinsic;
+
+import android.graphics.Bitmap;
+import android.graphics.Color;
+import android.graphics.Paint;
+import android.graphics.drawable.BitmapDrawable;
+import android.graphics.drawable.Drawable;
+import android.graphics.drawable.LayerDrawable;
+import android.graphics.drawable.ShapeDrawable;
+import android.graphics.drawable.StateListDrawable;
+import android.graphics.drawable.shapes.RectShape;
+import android.os.Build;
+import android.view.Gravity;
+import android.widget.RadioButton;
+import android.content.Context;
+import android.util.AttributeSet;
+
+/*
+ A button with Thumbnail which extends Radio Button.
+ The widget override a background drawable of Radio Button with a StateList Drawable.
+ Each state has a LayerDrawable with a Thumbnail image and a Focus rectangle.
+ It's using original Radio Buttons text as a label, because LayerDrawable showed some issues with Canvas.drawText().
+ */
+public class ThumbnailRadioButton extends RadioButton {
+    public ThumbnailRadioButton(Context context) {
+        super(context);
+        init();
+    }
+
+    public ThumbnailRadioButton(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        init();
+    }
+
+    public ThumbnailRadioButton(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+        init();
+    }
+
+    private void init() {
+        setButtonDrawable(android.R.color.transparent);
+    }
+
+    public void setThumbnail(Bitmap bitmap) {
+        //Bitmap drawable
+        BitmapDrawable bmp = new BitmapDrawable(getResources(), bitmap);
+        bmp.setGravity(Gravity.CENTER);
+
+        int strokeWidth = 24;
+        //Checked state
+        ShapeDrawable rectChecked = new ShapeDrawable(new RectShape());
+        rectChecked.getPaint().setColor(0xFFFFFFFF);
+        rectChecked.getPaint().setStyle(Paint.Style.STROKE);
+        rectChecked.getPaint().setStrokeWidth(strokeWidth);
+        rectChecked.setIntrinsicWidth(bitmap.getWidth() + strokeWidth);
+        rectChecked.setIntrinsicHeight(bitmap.getHeight() + strokeWidth);
+        Drawable drawableArray[] = new Drawable[]{bmp, rectChecked};
+        LayerDrawable layerChecked = new LayerDrawable(drawableArray);
+
+        //Unchecked state
+        ShapeDrawable rectUnchecked = new ShapeDrawable(new RectShape());
+        rectUnchecked.getPaint().setColor(0x0);
+        rectUnchecked.getPaint().setStyle(Paint.Style.STROKE);
+        rectUnchecked.getPaint().setStrokeWidth(strokeWidth);
+        rectUnchecked.setIntrinsicWidth(bitmap.getWidth() + strokeWidth);
+        rectUnchecked.setIntrinsicHeight(bitmap.getHeight() + strokeWidth);
+        Drawable drawableArray2[] = new Drawable[]{bmp, rectUnchecked};
+        LayerDrawable layerUnchecked = new LayerDrawable(drawableArray2);
+
+        //Statelist drawable
+        StateListDrawable states = new StateListDrawable();
+        states.addState(new int[]{android.R.attr.state_checked},
+                layerChecked);
+        states.addState(new int[]{},
+                layerUnchecked);
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN)
+            setBackground(states);
+        else
+            setBackgroundDrawable(states);
+
+        //Offset text to center/bottom of the checkbox
+        Paint paint = new Paint();
+        paint.setAntiAlias(true);
+        paint.setTextSize(getTextSize());
+        paint.setTypeface(getTypeface());
+        float w = paint.measureText(getText(), 0, getText().length());
+        setPadding(getPaddingLeft() + (int) ((bitmap.getWidth() - w) / 2.f + .5f),
+                getPaddingTop() + (int) (bitmap.getHeight() * 0.70),
+                getPaddingRight(),
+                getPaddingBottom());
+
+        setShadowLayer(5, 0, 0, Color.BLACK);
+    }
+}
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/drawable-hdpi/ic_launcher.png b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/drawable-hdpi/ic_launcher.png
new file mode 100755
index 0000000..75b3c97
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/drawable-hdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/drawable-hdpi/tile.9.png b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/drawable-hdpi/tile.9.png
new file mode 100644
index 0000000..1358628
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/drawable-hdpi/tile.9.png
Binary files differ
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/drawable-mdpi/ic_launcher.png b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/drawable-mdpi/ic_launcher.png
new file mode 100755
index 0000000..4ccd98e
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/drawable-mdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/drawable-nodpi/data.jpg b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/drawable-nodpi/data.jpg
new file mode 100644
index 0000000..48e48e6
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/drawable-nodpi/data.jpg
Binary files differ
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/drawable-xhdpi/ic_launcher.png b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/drawable-xhdpi/ic_launcher.png
new file mode 100755
index 0000000..7c5aeed
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/drawable-xhdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/drawable-xxhdpi/ic_launcher.png b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/drawable-xxhdpi/ic_launcher.png
new file mode 100755
index 0000000..3c45f51
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/drawable-xxhdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/layout/activity_main.xml b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/layout/activity_main.xml
new file mode 100755
index 0000000..be1aa49
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/layout/activity_main.xml
@@ -0,0 +1,36 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <LinearLayout style="@style/Widget.SampleMessageTile"
+                  android:layout_width="match_parent"
+                  android:layout_height="wrap_content"
+                  android:orientation="vertical">
+
+        <TextView style="@style/Widget.SampleMessage"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginLeft="@dimen/horizontal_page_margin"
+            android:layout_marginRight="@dimen/horizontal_page_margin"
+            android:layout_marginTop="@dimen/vertical_page_margin"
+            android:layout_marginBottom="@dimen/vertical_page_margin"
+            android:text="@string/intro_message" />
+    </LinearLayout>
+</LinearLayout>
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/layout/main_layout.xml b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/layout/main_layout.xml
new file mode 100644
index 0000000..13516d8
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/layout/main_layout.xml
@@ -0,0 +1,51 @@
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#0099cc"
+    tools:context=".MainActivity">
+
+    <ImageView
+        android:id="@+id/imageView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:scaleType="centerCrop"
+        android:src="@drawable/data" />
+
+    <RadioGroup
+        android:id="@+id/radioGroup1"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_centerHorizontal="true"
+        android:orientation="horizontal"
+        android:layout_above="@+id/seekBar1"
+        android:layout_marginBottom="8dp">
+
+        <com.example.android.renderscriptintrinsic.ThumbnailRadioButton
+            android:id="@+id/radio0"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:checked="true"
+            android:text="Blur" />
+
+        <com.example.android.renderscriptintrinsic.ThumbnailRadioButton
+            android:id="@+id/radio1"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Emboss" />
+
+        <com.example.android.renderscriptintrinsic.ThumbnailRadioButton
+            android:id="@+id/radio2"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Hue" />
+    </RadioGroup>
+
+    <SeekBar
+        android:id="@+id/seekBar1"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_alignParentBottom="true"
+        android:layout_marginBottom="16dp" />
+
+</RelativeLayout>
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values-sw600dp/template-dimens.xml b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values-sw600dp/template-dimens.xml
new file mode 100644
index 0000000..22074a2
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values-sw600dp/template-dimens.xml
@@ -0,0 +1,24 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <!-- Semantic definitions -->
+
+    <dimen name="horizontal_page_margin">@dimen/margin_huge</dimen>
+    <dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
+
+</resources>
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values-sw600dp/template-styles.xml b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values-sw600dp/template-styles.xml
new file mode 100644
index 0000000..03d1974
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values-sw600dp/template-styles.xml
@@ -0,0 +1,25 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <style name="Widget.SampleMessage">
+        <item name="android:textAppearance">?android:textAppearanceLarge</item>
+        <item name="android:lineSpacingMultiplier">1.2</item>
+        <item name="android:shadowDy">-6.5</item>
+    </style>
+
+</resources>
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values-v11/styles.xml b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values-v11/styles.xml
new file mode 100644
index 0000000..f3a90c6
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values-v11/styles.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <!--
+        Base application theme for API 11+. This theme completely replaces
+        AppBaseTheme from res/values/styles.xml on API 11+ devices.
+    -->
+    <style name="AppBaseTheme" parent="android:Theme.Holo.Light">
+        <!-- API 11 theme customizations can go here. -->
+    </style>
+
+    <style name="FullscreenTheme" parent="android:Theme.Holo">
+        <item name="android:actionBarStyle">@style/FullscreenActionBarStyle</item>
+        <item name="android:windowActionBarOverlay">true</item>
+        <item name="android:windowBackground">@null</item>
+        <item name="buttonBarStyle">?android:attr/buttonBarStyle</item>
+        <item name="buttonBarButtonStyle">?android:attr/buttonBarButtonStyle</item>
+    </style>
+
+    <style name="FullscreenActionBarStyle" parent="android:Widget.Holo.ActionBar">
+        <item name="android:background">@color/black_overlay</item>
+    </style>
+
+</resources>
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values-v14/styles.xml b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values-v14/styles.xml
new file mode 100644
index 0000000..a91fd03
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values-v14/styles.xml
@@ -0,0 +1,12 @@
+<resources>
+
+    <!--
+        Base application theme for API 14+. This theme completely replaces
+        AppBaseTheme from BOTH res/values/styles.xml and
+        res/values-v11/styles.xml on API 14+ devices.
+    -->
+    <style name="AppBaseTheme" parent="android:Theme.Holo.Light.DarkActionBar">
+        <!-- API 14 theme customizations can go here. -->
+    </style>
+
+</resources>
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values/attrs.xml b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values/attrs.xml
new file mode 100644
index 0000000..e67df0a
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values/attrs.xml
@@ -0,0 +1,14 @@
+<resources>
+
+    <!--
+         Declare custom theme attributes that allow changing which styles are
+         used for button bars depending on the API level.
+         ?android:attr/buttonBarStyle is new as of API 11 so this is
+         necessary to support previous API levels.
+    -->
+    <declare-styleable name="ButtonBarContainerTheme">
+        <attr name="buttonBarStyle" format="reference" />
+        <attr name="buttonBarButtonStyle" format="reference" />
+    </declare-styleable>
+
+</resources>
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values/base-strings.xml b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values/base-strings.xml
new file mode 100644
index 0000000..c8488be
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values/base-strings.xml
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+
+
+<resources>
+    <string name="app_name">RenderScriptIntrinsic</string>
+    <string name="intro_message">
+        <![CDATA[
+        
+            
+            RenderScriptIntrinsic sample that demonstrates how to use RenderScript intrinsics.
+            Creates several RenderScript intrinsics and shows a filtering result with various parameters.
+            Also shows how to extends RedioButton with StateListDrawable.
+            
+        
+        ]]>
+    </string>
+</resources>
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values/colors.xml b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values/colors.xml
new file mode 100644
index 0000000..327c060
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values/colors.xml
@@ -0,0 +1,5 @@
+<resources>
+
+    <color name="black_overlay">#66000000</color>
+
+</resources>
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values/styles.xml b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values/styles.xml
new file mode 100644
index 0000000..12eb930
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values/styles.xml
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <!--
+        Base application theme, dependent on API level. This theme is replaced
+        by AppBaseTheme from res/values-vXX/styles.xml on newer devices.
+    -->
+    <style name="AppBaseTheme" parent="android:Theme.Light">
+        <!--
+            Theme customizations available in newer API levels can go in
+            res/values-vXX/styles.xml, while customizations related to
+            backward-compatibility can go here.
+        -->
+    </style>
+
+    <style name="FullscreenTheme" parent="android:Theme.NoTitleBar">
+        <item name="android:windowContentOverlay">@null</item>
+        <item name="android:windowBackground">@null</item>
+        <item name="buttonBarStyle">@style/ButtonBar</item>
+        <item name="buttonBarButtonStyle">@style/ButtonBarButton</item>
+    </style>
+
+    <style name="ButtonBar">
+        <item name="android:paddingLeft">2dp</item>
+        <item name="android:paddingTop">5dp</item>
+        <item name="android:paddingRight">2dp</item>
+        <item name="android:paddingBottom">0dp</item>
+        <item name="android:background">@android:drawable/bottom_bar</item>
+    </style>
+
+    <style name="ButtonBarButton" />
+
+</resources>
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values/template-dimens.xml b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values/template-dimens.xml
new file mode 100644
index 0000000..39e710b
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values/template-dimens.xml
@@ -0,0 +1,32 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <!-- Define standard dimensions to comply with Holo-style grids and rhythm. -->
+
+    <dimen name="margin_tiny">4dp</dimen>
+    <dimen name="margin_small">8dp</dimen>
+    <dimen name="margin_medium">16dp</dimen>
+    <dimen name="margin_large">32dp</dimen>
+    <dimen name="margin_huge">64dp</dimen>
+
+    <!-- Semantic definitions -->
+
+    <dimen name="horizontal_page_margin">@dimen/margin_medium</dimen>
+    <dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
+
+</resources>
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values/template-styles.xml b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values/template-styles.xml
new file mode 100644
index 0000000..404623e
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/src/main/res/values/template-styles.xml
@@ -0,0 +1,42 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <!-- Activity themes -->
+
+    <style name="Theme.Base" parent="android:Theme.Holo.Light" />
+
+    <style name="Theme.Sample" parent="Theme.Base" />
+
+    <style name="AppTheme" parent="Theme.Sample" />
+    <!-- Widget styling -->
+
+    <style name="Widget" />
+
+    <style name="Widget.SampleMessage">
+        <item name="android:textAppearance">?android:textAppearanceMedium</item>
+        <item name="android:lineSpacingMultiplier">1.1</item>
+    </style>
+
+    <style name="Widget.SampleMessageTile">
+        <item name="android:background">@drawable/tile</item>
+        <item name="android:shadowColor">#7F000000</item>
+        <item name="android:shadowDy">-3.5</item>
+        <item name="android:shadowRadius">2</item>
+    </style>
+
+</resources>
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/tests/AndroidManifest.xml b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/tests/AndroidManifest.xml
new file mode 100644
index 0000000..96fa207
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/tests/AndroidManifest.xml
@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Copyright (C) 2014 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+<!-- package name must be unique so suffix with "tests" so package loader doesn't ignore us -->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.example.android.renderscriptintrinsic.tests"
+          android:versionCode="1"
+          android:versionName="1.0">
+
+    <uses-sdk
+            android:minSdkVersion="8"
+            android:targetSdkVersion="19" />
+
+    <!-- We add an application tag here just so that we can indicate that
+         this package needs to link against the android.test library,
+         which is needed when building test cases. -->
+    <application>
+        <uses-library android:name="android.test.runner" />
+    </application>
+
+    <!--
+    Specifies the instrumentation test runner used to run the tests.
+    -->
+    <instrumentation
+            android:name="android.test.InstrumentationTestRunner"
+            android:targetPackage="com.example.android.renderscriptintrinsic"
+            android:label="Tests for com.example.android.renderscriptintrinsic" />
+
+</manifest>
\ No newline at end of file
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/tests/src/com/example/android/renderscriptintrinsic/tests/SampleTests.java b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/tests/src/com/example/android/renderscriptintrinsic/tests/SampleTests.java
new file mode 100644
index 0000000..c1864f0
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/RenderScriptIntrinsicSample/tests/src/com/example/android/renderscriptintrinsic/tests/SampleTests.java
@@ -0,0 +1,79 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+
+/*
+* Copyright (C) 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*      http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+package com.example.android.renderscriptintrinsic.tests;
+
+import com.example.android.renderscriptintrinsic.*;
+
+import android.test.ActivityInstrumentationTestCase2;
+
+/**
+* Tests for RenderScriptIntrinsic sample.
+*/
+public class SampleTests extends ActivityInstrumentationTestCase2<MainActivity> {
+
+    private MainActivity mTestActivity;
+    private RenderScriptIntrinsicFragment mTestFragment;
+
+    public SampleTests() {
+        super(MainActivity.class);
+    }
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+
+        // Starts the activity under test using the default Intent with:
+        // action = {@link Intent#ACTION_MAIN}
+        // flags = {@link Intent#FLAG_ACTIVITY_NEW_TASK}
+        // All other fields are null or empty.
+        mTestActivity = getActivity();
+        mTestFragment = (RenderScriptIntrinsicFragment)
+            mTestActivity.getSupportFragmentManager().getFragments().get(1);
+    }
+
+    /**
+    * Test if the test fixture has been set up correctly.
+    */
+    public void testPreconditions() {
+        //Try to add a message to add context to your assertions. These messages will be shown if
+        //a tests fails and make it easy to understand why a test failed
+        assertNotNull("mTestActivity is null", mTestActivity);
+        assertNotNull("mTestFragment is null", mTestFragment);
+    }
+
+    /**
+    * Add more tests below.
+    */
+
+}
\ No newline at end of file
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/build.gradle b/prebuilts/gradle/RenderScriptIntrinsic/build.gradle
new file mode 100644
index 0000000..5cf5d3d
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/build.gradle
@@ -0,0 +1,14 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/gradle/wrapper/gradle-wrapper.jar b/prebuilts/gradle/RenderScriptIntrinsic/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..5838598
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/gradle/wrapper/gradle-wrapper.jar
Binary files differ
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/gradle/wrapper/gradle-wrapper.properties b/prebuilts/gradle/RenderScriptIntrinsic/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..0f9e485
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Thu Jan 30 18:12:33 PST 2014
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=http\://services.gradle.org/distributions/gradle-1.10-bin.zip
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/gradlew b/prebuilts/gradle/RenderScriptIntrinsic/gradlew
new file mode 100755
index 0000000..91a7e26
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/gradlew
@@ -0,0 +1,164 @@
+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+esac
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched.
+if $cygwin ; then
+    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+fi
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >&-
+APP_HOME="`pwd -P`"
+cd "$SAVED" >&-
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+    JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/gradlew.bat b/prebuilts/gradle/RenderScriptIntrinsic/gradlew.bat
new file mode 100644
index 0000000..aec9973
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/gradlew.bat
@@ -0,0 +1,90 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windowz variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+if "%@eval[2+2]" == "4" goto 4NT_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+goto execute
+
+:4NT_args
+@rem Get arguments from the 4NT Shell from JP Software
+set CMD_LINE_ARGS=%$
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/prebuilts/gradle/RenderScriptIntrinsic/settings.gradle b/prebuilts/gradle/RenderScriptIntrinsic/settings.gradle
new file mode 100644
index 0000000..702ca57
--- /dev/null
+++ b/prebuilts/gradle/RenderScriptIntrinsic/settings.gradle
@@ -0,0 +1,4 @@
+
+
+
+include 'RenderScriptIntrinsicSample'
diff --git a/prebuilts/gradle/RepeatingAlarm/RepeatingAlarmSample/build.gradle b/prebuilts/gradle/RepeatingAlarm/RepeatingAlarmSample/build.gradle
index 7870f12..5681239 100644
--- a/prebuilts/gradle/RepeatingAlarm/RepeatingAlarmSample/build.gradle
+++ b/prebuilts/gradle/RepeatingAlarm/RepeatingAlarmSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,7 +15,7 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 4
-    compile "com.android.support:support-v4:18.0.+"
+    compile "com.android.support:support-v4:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -28,7 +28,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/RepeatingAlarm/gradle/wrapper/gradle-wrapper.properties b/prebuilts/gradle/RepeatingAlarm/gradle/wrapper/gradle-wrapper.properties
index 861eddc..56f685a 100644
--- a/prebuilts/gradle/RepeatingAlarm/gradle/wrapper/gradle-wrapper.properties
+++ b/prebuilts/gradle/RepeatingAlarm/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=http\://services.gradle.org/distributions/gradle-1.8-bin.zip
+distributionUrl=http\://services.gradle.org/distributions/gradle-1.10-bin.zip
diff --git a/prebuilts/gradle/SlidingTabsBasic/README.txt b/prebuilts/gradle/SlidingTabsBasic/README.txt
new file mode 100644
index 0000000..9616c58
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/README.txt
@@ -0,0 +1,18 @@
+Build Instructions
+-------------------
+
+This sample uses the Gradle build system. To build this project, use the
+"gradlew build" command or use "Import Project" in Android Studio.
+
+To see a list of all available commands, run "gradlew tasks".
+
+Dependencies
+-------------
+
+- Android SDK Build-tools v18.1
+- Android Support Repository v2
+
+Dependencies are available for download via the Android SDK Manager.
+
+Android Studio is available for download at:
+    http://developer.android.com/sdk/installing/studio.html
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/build.gradle b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/build.gradle
new file mode 100644
index 0000000..5681239
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/build.gradle
@@ -0,0 +1,58 @@
+
+
+
+buildscript {
+    repositories {
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:0.8.+'
+    }
+}
+
+apply plugin: 'android'
+
+dependencies {
+    // Add the support lib that is appropriate for SDK 4
+    compile "com.android.support:support-v4:19.0.+"
+}
+
+// The sample build uses multiple directories to
+// keep boilerplate and common code separate from
+// the main sample code.
+List<String> dirs = [
+    'main',     // main sample code; look here for the interesting stuff.
+    'common',   // components that are reused by multiple samples
+    'template'] // boilerplate code that is generated by the sample template process
+
+android {
+    compileSdkVersion 19
+    buildToolsVersion "19.0.1"
+
+    sourceSets {
+        main {
+            dirs.each { dir ->
+                java.srcDirs "src/${dir}/java"
+                res.srcDirs "src/${dir}/res"
+            }
+        }
+        instrumentTest.setRoot('tests')
+        instrumentTest.java.srcDirs = ['tests/src']
+    }
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/AndroidManifest.xml b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..31cbfb8
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/AndroidManifest.xml
@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.android.slidingtabsbasic"
+    android:versionCode="1"
+    android:versionName="1.0">
+
+    <uses-sdk android:minSdkVersion="4" android:targetSdkVersion="19" />
+
+    <application android:allowBackup="true"
+        android:label="@string/app_name"
+        android:icon="@drawable/ic_launcher"
+        android:theme="@style/AppTheme">
+
+        <activity android:name=".MainActivity"
+                  android:label="@string/app_name">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+
+</manifest>
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/activities/SampleActivityBase.java b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/activities/SampleActivityBase.java
new file mode 100644
index 0000000..3228927
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/activities/SampleActivityBase.java
@@ -0,0 +1,52 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+package com.example.android.common.activities;
+
+import android.os.Bundle;
+import android.support.v4.app.FragmentActivity;
+
+import com.example.android.common.logger.Log;
+import com.example.android.common.logger.LogWrapper;
+
+/**
+ * Base launcher activity, to handle most of the common plumbing for samples.
+ */
+public class SampleActivityBase extends FragmentActivity {
+
+    public static final String TAG = "SampleActivityBase";
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+    }
+
+    @Override
+    protected  void onStart() {
+        super.onStart();
+        initializeLogging();
+    }
+
+    /** Set up targets to receive log data */
+    public void initializeLogging() {
+        // Using Log, front-end to the logging chain, emulates android.util.log method signatures.
+        // Wraps Android's native log framework
+        LogWrapper logWrapper = new LogWrapper();
+        Log.setLogNode(logWrapper);
+
+        Log.i(TAG, "Ready");
+    }
+}
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/logger/Log.java b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/logger/Log.java
new file mode 100644
index 0000000..17503c5
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/logger/Log.java
@@ -0,0 +1,236 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Helper class for a list (or tree) of LoggerNodes.
+ *
+ * <p>When this is set as the head of the list,
+ * an instance of it can function as a drop-in replacement for {@link android.util.Log}.
+ * Most of the methods in this class server only to map a method call in Log to its equivalent
+ * in LogNode.</p>
+ */
+public class Log {
+    // Grabbing the native values from Android's native logging facilities,
+    // to make for easy migration and interop.
+    public static final int NONE = -1;
+    public static final int VERBOSE = android.util.Log.VERBOSE;
+    public static final int DEBUG = android.util.Log.DEBUG;
+    public static final int INFO = android.util.Log.INFO;
+    public static final int WARN = android.util.Log.WARN;
+    public static final int ERROR = android.util.Log.ERROR;
+    public static final int ASSERT = android.util.Log.ASSERT;
+
+    // Stores the beginning of the LogNode topology.
+    private static LogNode mLogNode;
+
+    /**
+     * Returns the next LogNode in the linked list.
+     */
+    public static LogNode getLogNode() {
+        return mLogNode;
+    }
+
+    /**
+     * Sets the LogNode data will be sent to.
+     */
+    public static void setLogNode(LogNode node) {
+        mLogNode = node;
+    }
+
+    /**
+     * Instructs the LogNode to print the log data provided. Other LogNodes can
+     * be chained to the end of the LogNode as desired.
+     *
+     * @param priority Log level of the data being logged. Verbose, Error, etc.
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void println(int priority, String tag, String msg, Throwable tr) {
+        if (mLogNode != null) {
+            mLogNode.println(priority, tag, msg, tr);
+        }
+    }
+
+    /**
+     * Instructs the LogNode to print the log data provided. Other LogNodes can
+     * be chained to the end of the LogNode as desired.
+     *
+     * @param priority Log level of the data being logged. Verbose, Error, etc.
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     */
+    public static void println(int priority, String tag, String msg) {
+        println(priority, tag, msg, null);
+    }
+
+   /**
+     * Prints a message at VERBOSE priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void v(String tag, String msg, Throwable tr) {
+        println(VERBOSE, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at VERBOSE priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void v(String tag, String msg) {
+        v(tag, msg, null);
+    }
+
+
+    /**
+     * Prints a message at DEBUG priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void d(String tag, String msg, Throwable tr) {
+        println(DEBUG, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at DEBUG priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void d(String tag, String msg) {
+        d(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at INFO priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void i(String tag, String msg, Throwable tr) {
+        println(INFO, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at INFO priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void i(String tag, String msg) {
+        i(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at WARN priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void w(String tag, String msg, Throwable tr) {
+        println(WARN, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at WARN priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void w(String tag, String msg) {
+        w(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at WARN priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void w(String tag, Throwable tr) {
+        w(tag, null, tr);
+    }
+
+    /**
+     * Prints a message at ERROR priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void e(String tag, String msg, Throwable tr) {
+        println(ERROR, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at ERROR priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void e(String tag, String msg) {
+        e(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at ASSERT priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void wtf(String tag, String msg, Throwable tr) {
+        println(ASSERT, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at ASSERT priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void wtf(String tag, String msg) {
+        wtf(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at ASSERT priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void wtf(String tag, Throwable tr) {
+        wtf(tag, null, tr);
+    }
+}
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/logger/LogFragment.java b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/logger/LogFragment.java
new file mode 100644
index 0000000..b302acd
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/logger/LogFragment.java
@@ -0,0 +1,109 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.common.logger;
+
+import android.graphics.Typeface;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.view.Gravity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ScrollView;
+
+/**
+ * Simple fraggment which contains a LogView and uses is to output log data it receives
+ * through the LogNode interface.
+ */
+public class LogFragment extends Fragment {
+
+    private LogView mLogView;
+    private ScrollView mScrollView;
+
+    public LogFragment() {}
+
+    public View inflateViews() {
+        mScrollView = new ScrollView(getActivity());
+        ViewGroup.LayoutParams scrollParams = new ViewGroup.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                ViewGroup.LayoutParams.MATCH_PARENT);
+        mScrollView.setLayoutParams(scrollParams);
+
+        mLogView = new LogView(getActivity());
+        ViewGroup.LayoutParams logParams = new ViewGroup.LayoutParams(scrollParams);
+        logParams.height = ViewGroup.LayoutParams.WRAP_CONTENT;
+        mLogView.setLayoutParams(logParams);
+        mLogView.setClickable(true);
+        mLogView.setFocusable(true);
+        mLogView.setTypeface(Typeface.MONOSPACE);
+
+        // Want to set padding as 16 dips, setPadding takes pixels.  Hooray math!
+        int paddingDips = 16;
+        double scale = getResources().getDisplayMetrics().density;
+        int paddingPixels = (int) ((paddingDips * (scale)) + .5);
+        mLogView.setPadding(paddingPixels, paddingPixels, paddingPixels, paddingPixels);
+        mLogView.setCompoundDrawablePadding(paddingPixels);
+
+        mLogView.setGravity(Gravity.BOTTOM);
+        mLogView.setTextAppearance(getActivity(), android.R.style.TextAppearance_Holo_Medium);
+
+        mScrollView.addView(mLogView);
+        return mScrollView;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+
+        View result = inflateViews();
+
+        mLogView.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {}
+
+            @Override
+            public void afterTextChanged(Editable s) {
+                mScrollView.fullScroll(ScrollView.FOCUS_DOWN);
+            }
+        });
+        return result;
+    }
+
+    public LogView getLogView() {
+        return mLogView;
+    }
+}
\ No newline at end of file
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/logger/LogNode.java b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/logger/LogNode.java
new file mode 100644
index 0000000..bc37cab
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/logger/LogNode.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Basic interface for a logging system that can output to one or more targets.
+ * Note that in addition to classes that will output these logs in some format,
+ * one can also implement this interface over a filter and insert that in the chain,
+ * such that no targets further down see certain data, or see manipulated forms of the data.
+ * You could, for instance, write a "ToHtmlLoggerNode" that just converted all the log data
+ * it received to HTML and sent it along to the next node in the chain, without printing it
+ * anywhere.
+ */
+public interface LogNode {
+
+    /**
+     * Instructs first LogNode in the list to print the log data provided.
+     * @param priority Log level of the data being logged.  Verbose, Error, etc.
+     * @param tag Tag for for the log data.  Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public void println(int priority, String tag, String msg, Throwable tr);
+
+}
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/logger/LogView.java b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/logger/LogView.java
new file mode 100644
index 0000000..c01542b
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/logger/LogView.java
@@ -0,0 +1,145 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+import android.app.Activity;
+import android.content.Context;
+import android.util.*;
+import android.widget.TextView;
+
+/** Simple TextView which is used to output log data received through the LogNode interface.
+*/
+public class LogView extends TextView implements LogNode {
+
+    public LogView(Context context) {
+        super(context);
+    }
+
+    public LogView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public LogView(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    /**
+     * Formats the log data and prints it out to the LogView.
+     * @param priority Log level of the data being logged.  Verbose, Error, etc.
+     * @param tag Tag for for the log data.  Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    @Override
+    public void println(int priority, String tag, String msg, Throwable tr) {
+
+        
+        String priorityStr = null;
+
+        // For the purposes of this View, we want to print the priority as readable text.
+        switch(priority) {
+            case android.util.Log.VERBOSE:
+                priorityStr = "VERBOSE";
+                break;
+            case android.util.Log.DEBUG:
+                priorityStr = "DEBUG";
+                break;
+            case android.util.Log.INFO:
+                priorityStr = "INFO";
+                break;
+            case android.util.Log.WARN:
+                priorityStr = "WARN";
+                break;
+            case android.util.Log.ERROR:
+                priorityStr = "ERROR";
+                break;
+            case android.util.Log.ASSERT:
+                priorityStr = "ASSERT";
+                break;
+            default:
+                break;
+        }
+
+        // Handily, the Log class has a facility for converting a stack trace into a usable string.
+        String exceptionStr = null;
+        if (tr != null) {
+            exceptionStr = android.util.Log.getStackTraceString(tr);
+        }
+
+        // Take the priority, tag, message, and exception, and concatenate as necessary
+        // into one usable line of text.
+        final StringBuilder outputBuilder = new StringBuilder();
+
+        String delimiter = "\t";
+        appendIfNotNull(outputBuilder, priorityStr, delimiter);
+        appendIfNotNull(outputBuilder, tag, delimiter);
+        appendIfNotNull(outputBuilder, msg, delimiter);
+        appendIfNotNull(outputBuilder, exceptionStr, delimiter);
+
+        // In case this was originally called from an AsyncTask or some other off-UI thread,
+        // make sure the update occurs within the UI thread.
+        ((Activity) getContext()).runOnUiThread( (new Thread(new Runnable() {
+            @Override
+            public void run() {
+                // Display the text we just generated within the LogView.
+                appendToLog(outputBuilder.toString());
+            }
+        })));
+
+        if (mNext != null) {
+            mNext.println(priority, tag, msg, tr);
+        }
+    }
+
+    public LogNode getNext() {
+        return mNext;
+    }
+
+    public void setNext(LogNode node) {
+        mNext = node;
+    }
+
+    /** Takes a string and adds to it, with a separator, if the bit to be added isn't null. Since
+     * the logger takes so many arguments that might be null, this method helps cut out some of the
+     * agonizing tedium of writing the same 3 lines over and over.
+     * @param source StringBuilder containing the text to append to.
+     * @param addStr The String to append
+     * @param delimiter The String to separate the source and appended strings. A tab or comma,
+     *                  for instance.
+     * @return The fully concatenated String as a StringBuilder
+     */
+    private StringBuilder appendIfNotNull(StringBuilder source, String addStr, String delimiter) {
+        if (addStr != null) {
+            if (addStr.length() == 0) {
+                delimiter = "";
+            }
+
+            return source.append(addStr).append(delimiter);
+        }
+        return source;
+    }
+
+    // The next LogNode in the chain.
+    LogNode mNext;
+
+    /** Outputs the string as a new line of log data in the LogView. */
+    public void appendToLog(String s) {
+        append("\n" + s);
+    }
+
+
+}
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/logger/LogWrapper.java b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/logger/LogWrapper.java
new file mode 100644
index 0000000..16a9e7b
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/logger/LogWrapper.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+import android.util.Log;
+
+/**
+ * Helper class which wraps Android's native Log utility in the Logger interface.  This way
+ * normal DDMS output can be one of the many targets receiving and outputting logs simultaneously.
+ */
+public class LogWrapper implements LogNode {
+
+    // For piping:  The next node to receive Log data after this one has done its work.
+    private LogNode mNext;
+
+    /**
+     * Returns the next LogNode in the linked list.
+     */
+    public LogNode getNext() {
+        return mNext;
+    }
+
+    /**
+     * Sets the LogNode data will be sent to..
+     */
+    public void setNext(LogNode node) {
+        mNext = node;
+    }
+
+    /**
+     * Prints data out to the console using Android's native log mechanism.
+     * @param priority Log level of the data being logged.  Verbose, Error, etc.
+     * @param tag Tag for for the log data.  Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    @Override
+    public void println(int priority, String tag, String msg, Throwable tr) {
+        // There actually are log methods that don't take a msg parameter.  For now,
+        // if that's the case, just convert null to the empty string and move on.
+        String useMsg = msg;
+        if (useMsg == null) {
+            useMsg = "";
+        }
+
+        // If an exeption was provided, convert that exception to a usable string and attach
+        // it to the end of the msg method.
+        if (tr != null) {
+            msg += "\n" + Log.getStackTraceString(tr);
+        }
+
+        // This is functionally identical to Log.x(tag, useMsg);
+        // For instance, if priority were Log.VERBOSE, this would be the same as Log.v(tag, useMsg)
+        Log.println(priority, tag, useMsg);
+
+        // If this isn't the last node in the chain, move things along.
+        if (mNext != null) {
+            mNext.println(priority, tag, msg, tr);
+        }
+    }
+}
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java
new file mode 100644
index 0000000..19967dc
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Simple {@link LogNode} filter, removes everything except the message.
+ * Useful for situations like on-screen log output where you don't want a lot of metadata displayed,
+ * just easy-to-read message updates as they're happening.
+ */
+public class MessageOnlyLogFilter implements LogNode {
+
+    LogNode mNext;
+
+    /**
+     * Takes the "next" LogNode as a parameter, to simplify chaining.
+     *
+     * @param next The next LogNode in the pipeline.
+     */
+    public MessageOnlyLogFilter(LogNode next) {
+        mNext = next;
+    }
+
+    public MessageOnlyLogFilter() {
+    }
+
+    @Override
+    public void println(int priority, String tag, String msg, Throwable tr) {
+        if (mNext != null) {
+            getNext().println(Log.NONE, null, msg, null);
+        }
+    }
+
+    /**
+     * Returns the next LogNode in the chain.
+     */
+    public LogNode getNext() {
+        return mNext;
+    }
+
+    /**
+     * Sets the LogNode data will be sent to..
+     */
+    public void setNext(LogNode node) {
+        mNext = node;
+    }
+
+}
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/view/SlidingTabLayout.java b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/view/SlidingTabLayout.java
new file mode 100644
index 0000000..20049e3
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/view/SlidingTabLayout.java
@@ -0,0 +1,314 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.common.view;
+
+import android.content.Context;
+import android.graphics.Typeface;
+import android.os.Build;
+import android.support.v4.view.PagerAdapter;
+import android.support.v4.view.ViewPager;
+import android.util.AttributeSet;
+import android.util.TypedValue;
+import android.view.Gravity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.HorizontalScrollView;
+import android.widget.TextView;
+
+/**
+ * To be used with ViewPager to provide a tab indicator component which give constant feedback as to
+ * the user's scroll progress.
+ * <p>
+ * To use the component, simply add it to your view hierarchy. Then in your
+ * {@link android.app.Activity} or {@link android.support.v4.app.Fragment} call
+ * {@link #setViewPager(ViewPager)} providing it the ViewPager this layout is being used for.
+ * <p>
+ * The colors can be customized in two ways. The first and simplest is to provide an array of colors
+ * via {@link #setSelectedIndicatorColors(int...)} and {@link #setDividerColors(int...)}. The
+ * alternative is via the {@link TabColorizer} interface which provides you complete control over
+ * which color is used for any individual position.
+ * <p>
+ * The views used as tabs can be customized by calling {@link #setCustomTabView(int, int)},
+ * providing the layout ID of your custom layout.
+ */
+public class SlidingTabLayout extends HorizontalScrollView {
+
+    /**
+     * Allows complete control over the colors drawn in the tab layout. Set with
+     * {@link #setCustomTabColorizer(TabColorizer)}.
+     */
+    public interface TabColorizer {
+
+        /**
+         * @return return the color of the indicator used when {@code position} is selected.
+         */
+        int getIndicatorColor(int position);
+
+        /**
+         * @return return the color of the divider drawn to the right of {@code position}.
+         */
+        int getDividerColor(int position);
+
+    }
+
+    private static final int TITLE_OFFSET_DIPS = 24;
+    private static final int TAB_VIEW_PADDING_DIPS = 16;
+    private static final int TAB_VIEW_TEXT_SIZE_SP = 12;
+
+    private int mTitleOffset;
+
+    private int mTabViewLayoutId;
+    private int mTabViewTextViewId;
+
+    private ViewPager mViewPager;
+    private ViewPager.OnPageChangeListener mViewPagerPageChangeListener;
+
+    private final SlidingTabStrip mTabStrip;
+
+    public SlidingTabLayout(Context context) {
+        this(context, null);
+    }
+
+    public SlidingTabLayout(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public SlidingTabLayout(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+
+        // Disable the Scroll Bar
+        setHorizontalScrollBarEnabled(false);
+        // Make sure that the Tab Strips fills this View
+        setFillViewport(true);
+
+        mTitleOffset = (int) (TITLE_OFFSET_DIPS * getResources().getDisplayMetrics().density);
+
+        mTabStrip = new SlidingTabStrip(context);
+        addView(mTabStrip, LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
+    }
+
+    /**
+     * Set the custom {@link TabColorizer} to be used.
+     *
+     * If you only require simple custmisation then you can use
+     * {@link #setSelectedIndicatorColors(int...)} and {@link #setDividerColors(int...)} to achieve
+     * similar effects.
+     */
+    public void setCustomTabColorizer(TabColorizer tabColorizer) {
+        mTabStrip.setCustomTabColorizer(tabColorizer);
+    }
+
+    /**
+     * Sets the colors to be used for indicating the selected tab. These colors are treated as a
+     * circular array. Providing one color will mean that all tabs are indicated with the same color.
+     */
+    public void setSelectedIndicatorColors(int... colors) {
+        mTabStrip.setSelectedIndicatorColors(colors);
+    }
+
+    /**
+     * Sets the colors to be used for tab dividers. These colors are treated as a circular array.
+     * Providing one color will mean that all tabs are indicated with the same color.
+     */
+    public void setDividerColors(int... colors) {
+        mTabStrip.setDividerColors(colors);
+    }
+
+    /**
+     * Set the {@link ViewPager.OnPageChangeListener}. When using {@link SlidingTabLayout} you are
+     * required to set any {@link ViewPager.OnPageChangeListener} through this method. This is so
+     * that the layout can update it's scroll position correctly.
+     *
+     * @see ViewPager#setOnPageChangeListener(ViewPager.OnPageChangeListener)
+     */
+    public void setOnPageChangeListener(ViewPager.OnPageChangeListener listener) {
+        mViewPagerPageChangeListener = listener;
+    }
+
+    /**
+     * Set the custom layout to be inflated for the tab views.
+     *
+     * @param layoutResId Layout id to be inflated
+     * @param textViewId id of the {@link TextView} in the inflated view
+     */
+    public void setCustomTabView(int layoutResId, int textViewId) {
+        mTabViewLayoutId = layoutResId;
+        mTabViewTextViewId = textViewId;
+    }
+
+    /**
+     * Sets the associated view pager. Note that the assumption here is that the pager content
+     * (number of tabs and tab titles) does not change after this call has been made.
+     */
+    public void setViewPager(ViewPager viewPager) {
+        mTabStrip.removeAllViews();
+
+        mViewPager = viewPager;
+        if (viewPager != null) {
+            viewPager.setOnPageChangeListener(new InternalViewPagerListener());
+            populateTabStrip();
+        }
+    }
+
+    /**
+     * Create a default view to be used for tabs. This is called if a custom tab view is not set via
+     * {@link #setCustomTabView(int, int)}.
+     */
+    protected TextView createDefaultTabView(Context context) {
+        TextView textView = new TextView(context);
+        textView.setGravity(Gravity.CENTER);
+        textView.setTextSize(TypedValue.COMPLEX_UNIT_SP, TAB_VIEW_TEXT_SIZE_SP);
+        textView.setTypeface(Typeface.DEFAULT_BOLD);
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
+            // If we're running on Honeycomb or newer, then we can use the Theme's
+            // selectableItemBackground to ensure that the View has a pressed state
+            TypedValue outValue = new TypedValue();
+            getContext().getTheme().resolveAttribute(android.R.attr.selectableItemBackground,
+                    outValue, true);
+            textView.setBackgroundResource(outValue.resourceId);
+        }
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
+            // If we're running on ICS or newer, enable all-caps to match the Action Bar tab style
+            textView.setAllCaps(true);
+        }
+
+        int padding = (int) (TAB_VIEW_PADDING_DIPS * getResources().getDisplayMetrics().density);
+        textView.setPadding(padding, padding, padding, padding);
+
+        return textView;
+    }
+
+    private void populateTabStrip() {
+        final PagerAdapter adapter = mViewPager.getAdapter();
+        final View.OnClickListener tabClickListener = new TabClickListener();
+
+        for (int i = 0; i < adapter.getCount(); i++) {
+            View tabView = null;
+            TextView tabTitleView = null;
+
+            if (mTabViewLayoutId != 0) {
+                // If there is a custom tab view layout id set, try and inflate it
+                tabView = LayoutInflater.from(getContext()).inflate(mTabViewLayoutId, mTabStrip,
+                        false);
+                tabTitleView = (TextView) tabView.findViewById(mTabViewTextViewId);
+            }
+
+            if (tabView == null) {
+                tabView = createDefaultTabView(getContext());
+            }
+
+            if (tabTitleView == null && TextView.class.isInstance(tabView)) {
+                tabTitleView = (TextView) tabView;
+            }
+
+            tabTitleView.setText(adapter.getPageTitle(i));
+            tabView.setOnClickListener(tabClickListener);
+
+            mTabStrip.addView(tabView);
+        }
+    }
+
+    @Override
+    protected void onAttachedToWindow() {
+        super.onAttachedToWindow();
+
+        if (mViewPager != null) {
+            scrollToTab(mViewPager.getCurrentItem(), 0);
+        }
+    }
+
+    private void scrollToTab(int tabIndex, int positionOffset) {
+        final int tabStripChildCount = mTabStrip.getChildCount();
+        if (tabStripChildCount == 0 || tabIndex < 0 || tabIndex >= tabStripChildCount) {
+            return;
+        }
+
+        View selectedChild = mTabStrip.getChildAt(tabIndex);
+        if (selectedChild != null) {
+            int targetScrollX = selectedChild.getLeft() + positionOffset;
+
+            if (tabIndex > 0 || positionOffset > 0) {
+                // If we're not at the first child and are mid-scroll, make sure we obey the offset
+                targetScrollX -= mTitleOffset;
+            }
+
+            scrollTo(targetScrollX, 0);
+        }
+    }
+
+    private class InternalViewPagerListener implements ViewPager.OnPageChangeListener {
+        private int mScrollState;
+
+        @Override
+        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
+            int tabStripChildCount = mTabStrip.getChildCount();
+            if ((tabStripChildCount == 0) || (position < 0) || (position >= tabStripChildCount)) {
+                return;
+            }
+
+            mTabStrip.onViewPagerPageChanged(position, positionOffset);
+
+            View selectedTitle = mTabStrip.getChildAt(position);
+            int extraOffset = (selectedTitle != null)
+                    ? (int) (positionOffset * selectedTitle.getWidth())
+                    : 0;
+            scrollToTab(position, extraOffset);
+
+            if (mViewPagerPageChangeListener != null) {
+                mViewPagerPageChangeListener.onPageScrolled(position, positionOffset,
+                        positionOffsetPixels);
+            }
+        }
+
+        @Override
+        public void onPageScrollStateChanged(int state) {
+            mScrollState = state;
+
+            if (mViewPagerPageChangeListener != null) {
+                mViewPagerPageChangeListener.onPageScrollStateChanged(state);
+            }
+        }
+
+        @Override
+        public void onPageSelected(int position) {
+            if (mScrollState == ViewPager.SCROLL_STATE_IDLE) {
+                mTabStrip.onViewPagerPageChanged(position, 0f);
+                scrollToTab(position, 0);
+            }
+
+            if (mViewPagerPageChangeListener != null) {
+                mViewPagerPageChangeListener.onPageSelected(position);
+            }
+        }
+
+    }
+
+    private class TabClickListener implements View.OnClickListener {
+        @Override
+        public void onClick(View v) {
+            for (int i = 0; i < mTabStrip.getChildCount(); i++) {
+                if (v == mTabStrip.getChildAt(i)) {
+                    mViewPager.setCurrentItem(i);
+                    return;
+                }
+            }
+        }
+    }
+
+}
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/view/SlidingTabStrip.java b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/view/SlidingTabStrip.java
new file mode 100644
index 0000000..d5bbbae
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/common/view/SlidingTabStrip.java
@@ -0,0 +1,208 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.common.view;
+
+import android.R;
+import android.content.Context;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
+import android.util.AttributeSet;
+import android.util.TypedValue;
+import android.view.View;
+import android.widget.LinearLayout;
+
+class SlidingTabStrip extends LinearLayout {
+
+    private static final int DEFAULT_BOTTOM_BORDER_THICKNESS_DIPS = 2;
+    private static final byte DEFAULT_BOTTOM_BORDER_COLOR_ALPHA = 0x26;
+    private static final int SELECTED_INDICATOR_THICKNESS_DIPS = 8;
+    private static final int DEFAULT_SELECTED_INDICATOR_COLOR = 0xFF33B5E5;
+
+    private static final int DEFAULT_DIVIDER_THICKNESS_DIPS = 1;
+    private static final byte DEFAULT_DIVIDER_COLOR_ALPHA = 0x20;
+    private static final float DEFAULT_DIVIDER_HEIGHT = 0.5f;
+
+    private final int mBottomBorderThickness;
+    private final Paint mBottomBorderPaint;
+
+    private final int mSelectedIndicatorThickness;
+    private final Paint mSelectedIndicatorPaint;
+
+    private final int mDefaultBottomBorderColor;
+
+    private final Paint mDividerPaint;
+    private final float mDividerHeight;
+
+    private int mSelectedPosition;
+    private float mSelectionOffset;
+
+    private SlidingTabLayout.TabColorizer mCustomTabColorizer;
+    private final SimpleTabColorizer mDefaultTabColorizer;
+
+    SlidingTabStrip(Context context) {
+        this(context, null);
+    }
+
+    SlidingTabStrip(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        setWillNotDraw(false);
+
+        final float density = getResources().getDisplayMetrics().density;
+
+        TypedValue outValue = new TypedValue();
+        context.getTheme().resolveAttribute(R.attr.colorForeground, outValue, true);
+        final int themeForegroundColor =  outValue.data;
+
+        mDefaultBottomBorderColor = setColorAlpha(themeForegroundColor,
+                DEFAULT_BOTTOM_BORDER_COLOR_ALPHA);
+
+        mDefaultTabColorizer = new SimpleTabColorizer();
+        mDefaultTabColorizer.setIndicatorColors(DEFAULT_SELECTED_INDICATOR_COLOR);
+        mDefaultTabColorizer.setDividerColors(setColorAlpha(themeForegroundColor,
+                DEFAULT_DIVIDER_COLOR_ALPHA));
+
+        mBottomBorderThickness = (int) (DEFAULT_BOTTOM_BORDER_THICKNESS_DIPS * density);
+        mBottomBorderPaint = new Paint();
+        mBottomBorderPaint.setColor(mDefaultBottomBorderColor);
+
+        mSelectedIndicatorThickness = (int) (SELECTED_INDICATOR_THICKNESS_DIPS * density);
+        mSelectedIndicatorPaint = new Paint();
+
+        mDividerHeight = DEFAULT_DIVIDER_HEIGHT;
+        mDividerPaint = new Paint();
+        mDividerPaint.setStrokeWidth((int) (DEFAULT_DIVIDER_THICKNESS_DIPS * density));
+    }
+
+    void setCustomTabColorizer(SlidingTabLayout.TabColorizer customTabColorizer) {
+        mCustomTabColorizer = customTabColorizer;
+        invalidate();
+    }
+
+    void setSelectedIndicatorColors(int... colors) {
+        // Make sure that the custom colorizer is removed
+        mCustomTabColorizer = null;
+        mDefaultTabColorizer.setIndicatorColors(colors);
+        invalidate();
+    }
+
+    void setDividerColors(int... colors) {
+        // Make sure that the custom colorizer is removed
+        mCustomTabColorizer = null;
+        mDefaultTabColorizer.setDividerColors(colors);
+        invalidate();
+    }
+
+    void onViewPagerPageChanged(int position, float positionOffset) {
+        mSelectedPosition = position;
+        mSelectionOffset = positionOffset;
+        invalidate();
+    }
+
+    @Override
+    protected void onDraw(Canvas canvas) {
+        final int height = getHeight();
+        final int childCount = getChildCount();
+        final int dividerHeightPx = (int) (Math.min(Math.max(0f, mDividerHeight), 1f) * height);
+        final SlidingTabLayout.TabColorizer tabColorizer = mCustomTabColorizer != null
+                ? mCustomTabColorizer
+                : mDefaultTabColorizer;
+
+        // Thick colored underline below the current selection
+        if (childCount > 0) {
+            View selectedTitle = getChildAt(mSelectedPosition);
+            int left = selectedTitle.getLeft();
+            int right = selectedTitle.getRight();
+            int color = tabColorizer.getIndicatorColor(mSelectedPosition);
+
+            if (mSelectionOffset > 0f && mSelectedPosition < (getChildCount() - 1)) {
+                int nextColor = tabColorizer.getIndicatorColor(mSelectedPosition + 1);
+                if (color != nextColor) {
+                    color = blendColors(nextColor, color, mSelectionOffset);
+                }
+
+                // Draw the selection partway between the tabs
+                View nextTitle = getChildAt(mSelectedPosition + 1);
+                left = (int) (mSelectionOffset * nextTitle.getLeft() +
+                        (1.0f - mSelectionOffset) * left);
+                right = (int) (mSelectionOffset * nextTitle.getRight() +
+                        (1.0f - mSelectionOffset) * right);
+            }
+
+            mSelectedIndicatorPaint.setColor(color);
+
+            canvas.drawRect(left, height - mSelectedIndicatorThickness, right,
+                    height, mSelectedIndicatorPaint);
+        }
+
+        // Thin underline along the entire bottom edge
+        canvas.drawRect(0, height - mBottomBorderThickness, getWidth(), height, mBottomBorderPaint);
+
+        // Vertical separators between the titles
+        int separatorTop = (height - dividerHeightPx) / 2;
+        for (int i = 0; i < childCount - 1; i++) {
+            View child = getChildAt(i);
+            mDividerPaint.setColor(tabColorizer.getDividerColor(i));
+            canvas.drawLine(child.getRight(), separatorTop, child.getRight(),
+                    separatorTop + dividerHeightPx, mDividerPaint);
+        }
+    }
+
+    /**
+     * Set the alpha value of the {@code color} to be the given {@code alpha} value.
+     */
+    private static int setColorAlpha(int color, byte alpha) {
+        return Color.argb(alpha, Color.red(color), Color.green(color), Color.blue(color));
+    }
+
+    /**
+     * Blend {@code color1} and {@code color2} using the given ratio.
+     *
+     * @param ratio of which to blend. 1.0 will return {@code color1}, 0.5 will give an even blend,
+     *              0.0 will return {@code color2}.
+     */
+    private static int blendColors(int color1, int color2, float ratio) {
+        final float inverseRation = 1f - ratio;
+        float r = (Color.red(color1) * ratio) + (Color.red(color2) * inverseRation);
+        float g = (Color.green(color1) * ratio) + (Color.green(color2) * inverseRation);
+        float b = (Color.blue(color1) * ratio) + (Color.blue(color2) * inverseRation);
+        return Color.rgb((int) r, (int) g, (int) b);
+    }
+
+    private static class SimpleTabColorizer implements SlidingTabLayout.TabColorizer {
+        private int[] mIndicatorColors;
+        private int[] mDividerColors;
+
+        @Override
+        public final int getIndicatorColor(int position) {
+            return mIndicatorColors[position % mIndicatorColors.length];
+        }
+
+        @Override
+        public final int getDividerColor(int position) {
+            return mDividerColors[position % mDividerColors.length];
+        }
+
+        void setIndicatorColors(int... colors) {
+            mIndicatorColors = colors;
+        }
+
+        void setDividerColors(int... colors) {
+            mDividerColors = colors;
+        }
+    }
+}
\ No newline at end of file
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/slidingtabsbasic/MainActivity.java b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/slidingtabsbasic/MainActivity.java
new file mode 100644
index 0000000..ac405d1
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/slidingtabsbasic/MainActivity.java
@@ -0,0 +1,110 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+
+
+package com.example.android.slidingtabsbasic;
+
+import android.os.Bundle;
+import android.support.v4.app.FragmentTransaction;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.widget.ViewAnimator;
+
+import com.example.android.common.activities.SampleActivityBase;
+import com.example.android.common.logger.Log;
+import com.example.android.common.logger.LogFragment;
+import com.example.android.common.logger.LogWrapper;
+import com.example.android.common.logger.MessageOnlyLogFilter;
+
+/**
+ * A simple launcher activity containing a summary sample description, sample log and a custom
+ * {@link android.support.v4.app.Fragment} which can display a view.
+ * <p>
+ * For devices with displays with a width of 720dp or greater, the sample log is always visible,
+ * on other devices it's visibility is controlled by an item on the Action Bar.
+ */
+public class MainActivity extends SampleActivityBase {
+
+    public static final String TAG = "MainActivity";
+
+    // Whether the Log Fragment is currently shown
+    private boolean mLogShown;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
+        SlidingTabsBasicFragment fragment = new SlidingTabsBasicFragment();
+        transaction.replace(R.id.sample_content_fragment, fragment);
+        transaction.commit();
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.main, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onPrepareOptionsMenu(Menu menu) {
+        MenuItem logToggle = menu.findItem(R.id.menu_toggle_log);
+        logToggle.setVisible(findViewById(R.id.sample_output) instanceof ViewAnimator);
+        logToggle.setTitle(mLogShown ? R.string.sample_hide_log : R.string.sample_show_log);
+
+        return super.onPrepareOptionsMenu(menu);
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch(item.getItemId()) {
+            case R.id.menu_toggle_log:
+                mLogShown = !mLogShown;
+                ViewAnimator output = (ViewAnimator) findViewById(R.id.sample_output);
+                if (mLogShown) {
+                    output.setDisplayedChild(1);
+                } else {
+                    output.setDisplayedChild(0);
+                }
+                supportInvalidateOptionsMenu();
+                return true;
+        }
+        return super.onOptionsItemSelected(item);
+    }
+
+    /** Create a chain of targets that will receive log data */
+    @Override
+    public void initializeLogging() {
+        // Wraps Android's native log framework.
+        LogWrapper logWrapper = new LogWrapper();
+        // Using Log, front-end to the logging chain, emulates android.util.log method signatures.
+        Log.setLogNode(logWrapper);
+
+        // Filter strips out everything except the message text.
+        MessageOnlyLogFilter msgFilter = new MessageOnlyLogFilter();
+        logWrapper.setNext(msgFilter);
+
+        // On screen logging via a fragment with a TextView.
+        LogFragment logFragment = (LogFragment) getSupportFragmentManager()
+                .findFragmentById(R.id.log_fragment);
+        msgFilter.setNext(logFragment.getLogView());
+
+        Log.i(TAG, "Ready");
+    }
+}
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/slidingtabsbasic/SlidingTabsBasicFragment.java b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/slidingtabsbasic/SlidingTabsBasicFragment.java
new file mode 100644
index 0000000..80f7b10
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/java/com/example/android/slidingtabsbasic/SlidingTabsBasicFragment.java
@@ -0,0 +1,160 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.slidingtabsbasic;
+
+import com.example.android.common.logger.Log;
+import com.example.android.common.view.SlidingTabLayout;
+
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v4.view.PagerAdapter;
+import android.support.v4.view.ViewPager;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+/**
+ * A basic sample which shows how to use {@link com.example.android.common.view.SlidingTabLayout}
+ * to display a custom {@link ViewPager} title strip which gives continuous feedback to the user
+ * when scrolling.
+ */
+public class SlidingTabsBasicFragment extends Fragment {
+
+    static final String LOG_TAG = "SlidingTabsBasicFragment";
+
+    /**
+     * A custom {@link ViewPager} title strip which looks much like Tabs present in Android v4.0 and
+     * above, but is designed to give continuous feedback to the user when scrolling.
+     */
+    private SlidingTabLayout mSlidingTabLayout;
+
+    /**
+     * A {@link ViewPager} which will be used in conjunction with the {@link SlidingTabLayout} above.
+     */
+    private ViewPager mViewPager;
+
+    /**
+     * Inflates the {@link View} which will be displayed by this {@link Fragment}, from the app's
+     * resources.
+     */
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+            Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment_sample, container, false);
+    }
+
+    // BEGIN_INCLUDE (fragment_onviewcreated)
+    /**
+     * This is called after the {@link #onCreateView(LayoutInflater, ViewGroup, Bundle)} has finished.
+     * Here we can pick out the {@link View}s we need to configure from the content view.
+     *
+     * We set the {@link ViewPager}'s adapter to be an instance of {@link SamplePagerAdapter}. The
+     * {@link SlidingTabLayout} is then given the {@link ViewPager} so that it can populate itself.
+     *
+     * @param view View created in {@link #onCreateView(LayoutInflater, ViewGroup, Bundle)}
+     */
+    @Override
+    public void onViewCreated(View view, Bundle savedInstanceState) {
+        // BEGIN_INCLUDE (setup_viewpager)
+        // Get the ViewPager and set it's PagerAdapter so that it can display items
+        mViewPager = (ViewPager) view.findViewById(R.id.viewpager);
+        mViewPager.setAdapter(new SamplePagerAdapter());
+        // END_INCLUDE (setup_viewpager)
+
+        // BEGIN_INCLUDE (setup_slidingtablayout)
+        // Give the SlidingTabLayout the ViewPager, this must be done AFTER the ViewPager has had
+        // it's PagerAdapter set.
+        mSlidingTabLayout = (SlidingTabLayout) view.findViewById(R.id.sliding_tabs);
+        mSlidingTabLayout.setViewPager(mViewPager);
+        // END_INCLUDE (setup_slidingtablayout)
+    }
+    // END_INCLUDE (fragment_onviewcreated)
+
+    /**
+     * The {@link android.support.v4.view.PagerAdapter} used to display pages in this sample.
+     * The individual pages are simple and just display two lines of text. The important section of
+     * this class is the {@link #getPageTitle(int)} method which controls what is displayed in the
+     * {@link SlidingTabLayout}.
+     */
+    class SamplePagerAdapter extends PagerAdapter {
+
+        /**
+         * @return the number of pages to display
+         */
+        @Override
+        public int getCount() {
+            return 10;
+        }
+
+        /**
+         * @return true if the value returned from {@link #instantiateItem(ViewGroup, int)} is the
+         * same object as the {@link View} added to the {@link ViewPager}.
+         */
+        @Override
+        public boolean isViewFromObject(View view, Object o) {
+            return o == view;
+        }
+
+        // BEGIN_INCLUDE (pageradapter_getpagetitle)
+        /**
+         * Return the title of the item at {@code position}. This is important as what this method
+         * returns is what is displayed in the {@link SlidingTabLayout}.
+         * <p>
+         * Here we construct one using the position value, but for real application the title should
+         * refer to the item's contents.
+         */
+        @Override
+        public CharSequence getPageTitle(int position) {
+            return "Item " + (position + 1);
+        }
+        // END_INCLUDE (pageradapter_getpagetitle)
+
+        /**
+         * Instantiate the {@link View} which should be displayed at {@code position}. Here we
+         * inflate a layout from the apps resources and then change the text view to signify the position.
+         */
+        @Override
+        public Object instantiateItem(ViewGroup container, int position) {
+            // Inflate a new layout from our resources
+            View view = getActivity().getLayoutInflater().inflate(R.layout.pager_item,
+                    container, false);
+            // Add the newly created View to the ViewPager
+            container.addView(view);
+
+            // Retrieve a TextView from the inflated View, and update it's text
+            TextView title = (TextView) view.findViewById(R.id.item_title);
+            title.setText(String.valueOf(position + 1));
+
+            Log.i(LOG_TAG, "instantiateItem() [position: " + position + "]");
+
+            // Return the View
+            return view;
+        }
+
+        /**
+         * Destroy the item from the {@link ViewPager}. In our case this is simply removing the
+         * {@link View}.
+         */
+        @Override
+        public void destroyItem(ViewGroup container, int position, Object object) {
+            container.removeView((View) object);
+            Log.i(LOG_TAG, "destroyItem() [position: " + position + "]");
+        }
+
+    }
+}
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/drawable-hdpi/ic_launcher.png b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/drawable-hdpi/ic_launcher.png
new file mode 100644
index 0000000..53ebb57
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/drawable-hdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/drawable-hdpi/tile.9.png b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/drawable-hdpi/tile.9.png
new file mode 100644
index 0000000..1358628
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/drawable-hdpi/tile.9.png
Binary files differ
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/drawable-mdpi/ic_launcher.png b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/drawable-mdpi/ic_launcher.png
new file mode 100644
index 0000000..33aa87a
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/drawable-mdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/drawable-xhdpi/ic_launcher.png b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/drawable-xhdpi/ic_launcher.png
new file mode 100644
index 0000000..6a4ba00
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/drawable-xhdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/drawable-xxhdpi/ic_launcher.png b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/drawable-xxhdpi/ic_launcher.png
new file mode 100644
index 0000000..c3744cd
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/drawable-xxhdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/layout-w720dp/activity_main.xml b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/layout-w720dp/activity_main.xml
new file mode 100755
index 0000000..c9a52f6
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/layout-w720dp/activity_main.xml
@@ -0,0 +1,73 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+<LinearLayout
+      xmlns:android="http://schemas.android.com/apk/res/android"
+      android:orientation="horizontal"
+      android:layout_width="match_parent"
+      android:layout_height="match_parent"
+      android:id="@+id/sample_main_layout">
+
+    <LinearLayout
+          android:id="@+id/sample_output"
+          android:layout_width="0px"
+          android:layout_height="match_parent"
+          android:layout_weight="1"
+          android:orientation="vertical">
+
+        <FrameLayout
+              style="@style/Widget.SampleMessageTile"
+              android:layout_width="match_parent"
+              android:layout_height="wrap_content">
+
+            <TextView
+                  style="@style/Widget.SampleMessage"
+                  android:layout_width="match_parent"
+                  android:layout_height="wrap_content"
+                  android:paddingLeft="@dimen/margin_medium"
+                  android:paddingRight="@dimen/margin_medium"
+                  android:paddingTop="@dimen/margin_large"
+                  android:paddingBottom="@dimen/margin_large"
+                  android:text="@string/intro_message" />
+        </FrameLayout>
+
+        <View
+              android:layout_width="match_parent"
+              android:layout_height="1dp"
+              android:background="@android:color/darker_gray" />
+
+        <fragment
+              android:name="com.example.android.common.logger.LogFragment"
+              android:id="@+id/log_fragment"
+              android:layout_width="match_parent"
+              android:layout_height="0px"
+              android:layout_weight="1" />
+
+    </LinearLayout>
+
+    <View
+          android:layout_width="1dp"
+          android:layout_height="match_parent"
+          android:background="@android:color/darker_gray" />
+
+    <FrameLayout
+          android:id="@+id/sample_content_fragment"
+          android:layout_weight="2"
+          android:layout_width="0px"
+          android:layout_height="match_parent" />
+
+</LinearLayout>
+
+
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/layout/activity_main.xml b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/layout/activity_main.xml
new file mode 100755
index 0000000..1ae4f98
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/layout/activity_main.xml
@@ -0,0 +1,65 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+<LinearLayout
+      xmlns:android="http://schemas.android.com/apk/res/android"
+      android:orientation="vertical"
+      android:layout_width="match_parent"
+      android:layout_height="match_parent"
+      android:id="@+id/sample_main_layout">
+
+    <ViewAnimator
+          android:id="@+id/sample_output"
+          android:layout_width="match_parent"
+          android:layout_height="0px"
+          android:layout_weight="1">
+
+        <ScrollView
+              style="@style/Widget.SampleMessageTile"
+              android:layout_width="match_parent"
+              android:layout_height="match_parent">
+
+            <TextView
+                  style="@style/Widget.SampleMessage"
+                  android:layout_width="match_parent"
+                  android:layout_height="wrap_content"
+                  android:paddingLeft="@dimen/horizontal_page_margin"
+                  android:paddingRight="@dimen/horizontal_page_margin"
+                  android:paddingTop="@dimen/vertical_page_margin"
+                  android:paddingBottom="@dimen/vertical_page_margin"
+                  android:text="@string/intro_message" />
+        </ScrollView>
+
+        <fragment
+              android:name="com.example.android.common.logger.LogFragment"
+              android:id="@+id/log_fragment"
+              android:layout_width="match_parent"
+              android:layout_height="match_parent" />
+
+    </ViewAnimator>
+
+    <View
+          android:layout_width="match_parent"
+          android:layout_height="1dp"
+          android:background="@android:color/darker_gray" />
+
+    <FrameLayout
+          android:id="@+id/sample_content_fragment"
+          android:layout_weight="2"
+          android:layout_width="match_parent"
+          android:layout_height="0px" />
+
+</LinearLayout>
+
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/layout/fragment_sample.xml b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/layout/fragment_sample.xml
new file mode 100644
index 0000000..6ac3690
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/layout/fragment_sample.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+      android:layout_width="match_parent"
+      android:layout_height="match_parent"
+      android:orientation="vertical">
+
+    <com.example.android.common.view.SlidingTabLayout
+          android:id="@+id/sliding_tabs"
+          android:layout_width="match_parent"
+          android:layout_height="wrap_content" />
+
+    <android.support.v4.view.ViewPager
+          android:id="@+id/viewpager"
+          android:layout_width="match_parent"
+          android:layout_height="0px"
+          android:layout_weight="1"
+          android:background="@android:color/white"/>
+
+</LinearLayout>
\ No newline at end of file
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/layout/pager_item.xml b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/layout/pager_item.xml
new file mode 100644
index 0000000..ce4413f
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/layout/pager_item.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+      android:layout_width="match_parent"
+      android:layout_height="match_parent"
+      android:orientation="vertical"
+      android:gravity="center">
+
+    <TextView
+          android:id="@+id/item_subtitle"
+          android:layout_width="wrap_content"
+          android:layout_height="wrap_content"
+          android:textAppearance="?android:attr/textAppearanceLarge"
+          android:text="Page:"/>
+
+    <TextView
+          android:id="@+id/item_title"
+          android:layout_width="wrap_content"
+          android:layout_height="wrap_content"
+          android:textSize="80sp" />
+
+</LinearLayout>
\ No newline at end of file
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/menu/main.xml b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/menu/main.xml
new file mode 100644
index 0000000..b49c2c5
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/menu/main.xml
@@ -0,0 +1,21 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:id="@+id/menu_toggle_log"
+          android:showAsAction="always"
+          android:title="@string/sample_show_log" />
+</menu>
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/values-sw600dp/template-dimens.xml b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/values-sw600dp/template-dimens.xml
new file mode 100644
index 0000000..22074a2
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/values-sw600dp/template-dimens.xml
@@ -0,0 +1,24 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <!-- Semantic definitions -->
+
+    <dimen name="horizontal_page_margin">@dimen/margin_huge</dimen>
+    <dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
+
+</resources>
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/values-sw600dp/template-styles.xml b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/values-sw600dp/template-styles.xml
new file mode 100644
index 0000000..03d1974
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/values-sw600dp/template-styles.xml
@@ -0,0 +1,25 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <style name="Widget.SampleMessage">
+        <item name="android:textAppearance">?android:textAppearanceLarge</item>
+        <item name="android:lineSpacingMultiplier">1.2</item>
+        <item name="android:shadowDy">-6.5</item>
+    </style>
+
+</resources>
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/values/base-strings.xml b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/values/base-strings.xml
new file mode 100644
index 0000000..c7f26bf
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/values/base-strings.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+
+
+<resources>
+    <string name="app_name">SlidingTabsBasic</string>
+    <string name="intro_message">
+        <![CDATA[
+        
+            
+            A basic sample which shows how to use SlidingTabLayout to display a custom
+            ViewPager title strip which gives continuous feedback to the user when scrolling.
+            
+        
+        ]]>
+    </string>
+</resources>
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/values/strings.xml b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/values/strings.xml
new file mode 100755
index 0000000..7b9d9ec
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/values/strings.xml
@@ -0,0 +1,19 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+<resources>
+    <string name="sample_show_log">Show Log</string>
+    <string name="sample_hide_log">Hide Log</string>
+</resources>
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/values/template-dimens.xml b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/values/template-dimens.xml
new file mode 100644
index 0000000..39e710b
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/values/template-dimens.xml
@@ -0,0 +1,32 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <!-- Define standard dimensions to comply with Holo-style grids and rhythm. -->
+
+    <dimen name="margin_tiny">4dp</dimen>
+    <dimen name="margin_small">8dp</dimen>
+    <dimen name="margin_medium">16dp</dimen>
+    <dimen name="margin_large">32dp</dimen>
+    <dimen name="margin_huge">64dp</dimen>
+
+    <!-- Semantic definitions -->
+
+    <dimen name="horizontal_page_margin">@dimen/margin_medium</dimen>
+    <dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
+
+</resources>
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/values/template-styles.xml b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/values/template-styles.xml
new file mode 100644
index 0000000..404623e
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/src/main/res/values/template-styles.xml
@@ -0,0 +1,42 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <!-- Activity themes -->
+
+    <style name="Theme.Base" parent="android:Theme.Holo.Light" />
+
+    <style name="Theme.Sample" parent="Theme.Base" />
+
+    <style name="AppTheme" parent="Theme.Sample" />
+    <!-- Widget styling -->
+
+    <style name="Widget" />
+
+    <style name="Widget.SampleMessage">
+        <item name="android:textAppearance">?android:textAppearanceMedium</item>
+        <item name="android:lineSpacingMultiplier">1.1</item>
+    </style>
+
+    <style name="Widget.SampleMessageTile">
+        <item name="android:background">@drawable/tile</item>
+        <item name="android:shadowColor">#7F000000</item>
+        <item name="android:shadowDy">-3.5</item>
+        <item name="android:shadowRadius">2</item>
+    </style>
+
+</resources>
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/tests/AndroidManifest.xml b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/tests/AndroidManifest.xml
new file mode 100644
index 0000000..8d8fa2b
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/tests/AndroidManifest.xml
@@ -0,0 +1,61 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+
+
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Copyright (C) 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+<!-- package name must be unique so suffix with "tests" so package loader doesn't ignore us -->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.example.android.slidingtabsbasic.tests"
+          android:versionCode="1"
+          android:versionName="1.0">
+
+    <uses-sdk
+            android:minSdkVersion="4"
+            android:targetSdkVersion="19" />
+
+    <!-- We add an application tag here just so that we can indicate that
+         this package needs to link against the android.test library,
+         which is needed when building test cases. -->
+    <application>
+        <uses-library android:name="android.test.runner" />
+    </application>
+
+    <!--
+    Specifies the instrumentation test runner used to run the tests.
+    -->
+    <instrumentation
+            android:name="android.test.InstrumentationTestRunner"
+            android:targetPackage="com.example.android.slidingtabsbasic"
+            android:label="Tests for com.example.android.slidingtabsbasic" />
+
+</manifest>
\ No newline at end of file
diff --git a/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/tests/src/com/example/android/slidingtabsbasic/tests/SampleTests.java b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/tests/src/com/example/android/slidingtabsbasic/tests/SampleTests.java
new file mode 100644
index 0000000..6ab9c73
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/SlidingTabsBasicSample/tests/src/com/example/android/slidingtabsbasic/tests/SampleTests.java
@@ -0,0 +1,79 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+
+/*
+* Copyright (C) 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*      http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+package com.example.android.slidingtabsbasic.tests;
+
+import com.example.android.slidingtabsbasic.*;
+
+import android.test.ActivityInstrumentationTestCase2;
+
+/**
+* Tests for SlidingTabsBasic sample.
+*/
+public class SampleTests extends ActivityInstrumentationTestCase2<MainActivity> {
+
+    private MainActivity mTestActivity;
+    private SlidingTabsBasicFragment mTestFragment;
+
+    public SampleTests() {
+        super(MainActivity.class);
+    }
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+
+        // Starts the activity under test using the default Intent with:
+        // action = {@link Intent#ACTION_MAIN}
+        // flags = {@link Intent#FLAG_ACTIVITY_NEW_TASK}
+        // All other fields are null or empty.
+        mTestActivity = getActivity();
+        mTestFragment = (SlidingTabsBasicFragment)
+            mTestActivity.getSupportFragmentManager().getFragments().get(1);
+    }
+
+    /**
+    * Test if the test fixture has been set up correctly.
+    */
+    public void testPreconditions() {
+        //Try to add a message to add context to your assertions. These messages will be shown if
+        //a tests fails and make it easy to understand why a test failed
+        assertNotNull("mTestActivity is null", mTestActivity);
+        assertNotNull("mTestFragment is null", mTestFragment);
+    }
+
+    /**
+    * Add more tests below.
+    */
+
+}
\ No newline at end of file
diff --git a/prebuilts/gradle/SlidingTabsBasic/build.gradle b/prebuilts/gradle/SlidingTabsBasic/build.gradle
new file mode 100644
index 0000000..5cf5d3d
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/build.gradle
@@ -0,0 +1,14 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/prebuilts/gradle/SlidingTabsBasic/gradle/wrapper/gradle-wrapper.jar b/prebuilts/gradle/SlidingTabsBasic/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..8c0fb64
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/gradle/wrapper/gradle-wrapper.jar
Binary files differ
diff --git a/prebuilts/gradle/SlidingTabsBasic/gradle/wrapper/gradle-wrapper.properties b/prebuilts/gradle/SlidingTabsBasic/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..42ae065
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Thu Feb 06 10:46:09 GMT 2014
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=http\://services.gradle.org/distributions/gradle-1.10-all.zip
diff --git a/prebuilts/gradle/SlidingTabsBasic/gradlew b/prebuilts/gradle/SlidingTabsBasic/gradlew
new file mode 100755
index 0000000..91a7e26
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/gradlew
@@ -0,0 +1,164 @@
+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+esac
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched.
+if $cygwin ; then
+    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+fi
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >&-
+APP_HOME="`pwd -P`"
+cd "$SAVED" >&-
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+    JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
diff --git a/prebuilts/gradle/SlidingTabsBasic/gradlew.bat b/prebuilts/gradle/SlidingTabsBasic/gradlew.bat
new file mode 100644
index 0000000..aec9973
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/gradlew.bat
@@ -0,0 +1,90 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windowz variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+if "%@eval[2+2]" == "4" goto 4NT_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+goto execute
+
+:4NT_args
+@rem Get arguments from the 4NT Shell from JP Software
+set CMD_LINE_ARGS=%$
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/prebuilts/gradle/SlidingTabsBasic/settings.gradle b/prebuilts/gradle/SlidingTabsBasic/settings.gradle
new file mode 100644
index 0000000..4accfbd
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsBasic/settings.gradle
@@ -0,0 +1,4 @@
+
+
+
+include 'SlidingTabsBasicSample'
diff --git a/prebuilts/gradle/SlidingTabsColors/README.txt b/prebuilts/gradle/SlidingTabsColors/README.txt
new file mode 100644
index 0000000..9616c58
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/README.txt
@@ -0,0 +1,18 @@
+Build Instructions
+-------------------
+
+This sample uses the Gradle build system. To build this project, use the
+"gradlew build" command or use "Import Project" in Android Studio.
+
+To see a list of all available commands, run "gradlew tasks".
+
+Dependencies
+-------------
+
+- Android SDK Build-tools v18.1
+- Android Support Repository v2
+
+Dependencies are available for download via the Android SDK Manager.
+
+Android Studio is available for download at:
+    http://developer.android.com/sdk/installing/studio.html
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/build.gradle b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/build.gradle
new file mode 100644
index 0000000..c8567d6
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/build.gradle
@@ -0,0 +1,59 @@
+
+
+
+buildscript {
+    repositories {
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:0.8.+'
+    }
+}
+
+apply plugin: 'android'
+
+dependencies {
+    // Add the support lib that is appropriate for SDK 4
+    compile "com.android.support:support-v4:19.0.+"
+}
+
+// The sample build uses multiple directories to
+// keep boilerplate and common code separate from
+// the main sample code.
+List<String> dirs = [
+    'main',     // main sample code; look here for the interesting stuff.
+    'common',   // components that are reused by multiple samples
+    'template'] // boilerplate code that is generated by the sample template process
+
+android {
+    compileSdkVersion 19
+    buildToolsVersion "19.0.1"
+
+    sourceSets {
+        main {
+            dirs.each { dir ->
+                java.srcDirs "src/${dir}/java"
+                res.srcDirs "src/${dir}/res"
+            }
+        }
+        instrumentTest.setRoot('tests')
+        instrumentTest.java.srcDirs = ['tests/src']
+
+    }
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/AndroidManifest.xml b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..be4a43a
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/AndroidManifest.xml
@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.android.slidingtabscolors"
+    android:versionCode="1"
+    android:versionName="1.0">
+
+    <uses-sdk android:minSdkVersion="4" android:targetSdkVersion="19" />
+
+    <application android:allowBackup="true"
+        android:label="@string/app_name"
+        android:icon="@drawable/ic_launcher"
+        android:theme="@style/AppTheme">
+
+        <activity android:name=".MainActivity"
+                  android:label="@string/app_name">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+
+</manifest>
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/activities/SampleActivityBase.java b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/activities/SampleActivityBase.java
new file mode 100644
index 0000000..3228927
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/activities/SampleActivityBase.java
@@ -0,0 +1,52 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+package com.example.android.common.activities;
+
+import android.os.Bundle;
+import android.support.v4.app.FragmentActivity;
+
+import com.example.android.common.logger.Log;
+import com.example.android.common.logger.LogWrapper;
+
+/**
+ * Base launcher activity, to handle most of the common plumbing for samples.
+ */
+public class SampleActivityBase extends FragmentActivity {
+
+    public static final String TAG = "SampleActivityBase";
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+    }
+
+    @Override
+    protected  void onStart() {
+        super.onStart();
+        initializeLogging();
+    }
+
+    /** Set up targets to receive log data */
+    public void initializeLogging() {
+        // Using Log, front-end to the logging chain, emulates android.util.log method signatures.
+        // Wraps Android's native log framework
+        LogWrapper logWrapper = new LogWrapper();
+        Log.setLogNode(logWrapper);
+
+        Log.i(TAG, "Ready");
+    }
+}
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/logger/Log.java b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/logger/Log.java
new file mode 100644
index 0000000..17503c5
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/logger/Log.java
@@ -0,0 +1,236 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Helper class for a list (or tree) of LoggerNodes.
+ *
+ * <p>When this is set as the head of the list,
+ * an instance of it can function as a drop-in replacement for {@link android.util.Log}.
+ * Most of the methods in this class server only to map a method call in Log to its equivalent
+ * in LogNode.</p>
+ */
+public class Log {
+    // Grabbing the native values from Android's native logging facilities,
+    // to make for easy migration and interop.
+    public static final int NONE = -1;
+    public static final int VERBOSE = android.util.Log.VERBOSE;
+    public static final int DEBUG = android.util.Log.DEBUG;
+    public static final int INFO = android.util.Log.INFO;
+    public static final int WARN = android.util.Log.WARN;
+    public static final int ERROR = android.util.Log.ERROR;
+    public static final int ASSERT = android.util.Log.ASSERT;
+
+    // Stores the beginning of the LogNode topology.
+    private static LogNode mLogNode;
+
+    /**
+     * Returns the next LogNode in the linked list.
+     */
+    public static LogNode getLogNode() {
+        return mLogNode;
+    }
+
+    /**
+     * Sets the LogNode data will be sent to.
+     */
+    public static void setLogNode(LogNode node) {
+        mLogNode = node;
+    }
+
+    /**
+     * Instructs the LogNode to print the log data provided. Other LogNodes can
+     * be chained to the end of the LogNode as desired.
+     *
+     * @param priority Log level of the data being logged. Verbose, Error, etc.
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void println(int priority, String tag, String msg, Throwable tr) {
+        if (mLogNode != null) {
+            mLogNode.println(priority, tag, msg, tr);
+        }
+    }
+
+    /**
+     * Instructs the LogNode to print the log data provided. Other LogNodes can
+     * be chained to the end of the LogNode as desired.
+     *
+     * @param priority Log level of the data being logged. Verbose, Error, etc.
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     */
+    public static void println(int priority, String tag, String msg) {
+        println(priority, tag, msg, null);
+    }
+
+   /**
+     * Prints a message at VERBOSE priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void v(String tag, String msg, Throwable tr) {
+        println(VERBOSE, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at VERBOSE priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void v(String tag, String msg) {
+        v(tag, msg, null);
+    }
+
+
+    /**
+     * Prints a message at DEBUG priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void d(String tag, String msg, Throwable tr) {
+        println(DEBUG, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at DEBUG priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void d(String tag, String msg) {
+        d(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at INFO priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void i(String tag, String msg, Throwable tr) {
+        println(INFO, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at INFO priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void i(String tag, String msg) {
+        i(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at WARN priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void w(String tag, String msg, Throwable tr) {
+        println(WARN, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at WARN priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void w(String tag, String msg) {
+        w(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at WARN priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void w(String tag, Throwable tr) {
+        w(tag, null, tr);
+    }
+
+    /**
+     * Prints a message at ERROR priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void e(String tag, String msg, Throwable tr) {
+        println(ERROR, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at ERROR priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void e(String tag, String msg) {
+        e(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at ASSERT priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void wtf(String tag, String msg, Throwable tr) {
+        println(ASSERT, tag, msg, tr);
+    }
+
+    /**
+     * Prints a message at ASSERT priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param msg The actual message to be logged.
+     */
+    public static void wtf(String tag, String msg) {
+        wtf(tag, msg, null);
+    }
+
+    /**
+     * Prints a message at ASSERT priority.
+     *
+     * @param tag Tag for for the log data. Can be used to organize log statements.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public static void wtf(String tag, Throwable tr) {
+        wtf(tag, null, tr);
+    }
+}
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/logger/LogFragment.java b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/logger/LogFragment.java
new file mode 100644
index 0000000..b302acd
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/logger/LogFragment.java
@@ -0,0 +1,109 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.common.logger;
+
+import android.graphics.Typeface;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.view.Gravity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ScrollView;
+
+/**
+ * Simple fraggment which contains a LogView and uses is to output log data it receives
+ * through the LogNode interface.
+ */
+public class LogFragment extends Fragment {
+
+    private LogView mLogView;
+    private ScrollView mScrollView;
+
+    public LogFragment() {}
+
+    public View inflateViews() {
+        mScrollView = new ScrollView(getActivity());
+        ViewGroup.LayoutParams scrollParams = new ViewGroup.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                ViewGroup.LayoutParams.MATCH_PARENT);
+        mScrollView.setLayoutParams(scrollParams);
+
+        mLogView = new LogView(getActivity());
+        ViewGroup.LayoutParams logParams = new ViewGroup.LayoutParams(scrollParams);
+        logParams.height = ViewGroup.LayoutParams.WRAP_CONTENT;
+        mLogView.setLayoutParams(logParams);
+        mLogView.setClickable(true);
+        mLogView.setFocusable(true);
+        mLogView.setTypeface(Typeface.MONOSPACE);
+
+        // Want to set padding as 16 dips, setPadding takes pixels.  Hooray math!
+        int paddingDips = 16;
+        double scale = getResources().getDisplayMetrics().density;
+        int paddingPixels = (int) ((paddingDips * (scale)) + .5);
+        mLogView.setPadding(paddingPixels, paddingPixels, paddingPixels, paddingPixels);
+        mLogView.setCompoundDrawablePadding(paddingPixels);
+
+        mLogView.setGravity(Gravity.BOTTOM);
+        mLogView.setTextAppearance(getActivity(), android.R.style.TextAppearance_Holo_Medium);
+
+        mScrollView.addView(mLogView);
+        return mScrollView;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+
+        View result = inflateViews();
+
+        mLogView.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {}
+
+            @Override
+            public void afterTextChanged(Editable s) {
+                mScrollView.fullScroll(ScrollView.FOCUS_DOWN);
+            }
+        });
+        return result;
+    }
+
+    public LogView getLogView() {
+        return mLogView;
+    }
+}
\ No newline at end of file
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/logger/LogNode.java b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/logger/LogNode.java
new file mode 100644
index 0000000..bc37cab
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/logger/LogNode.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Basic interface for a logging system that can output to one or more targets.
+ * Note that in addition to classes that will output these logs in some format,
+ * one can also implement this interface over a filter and insert that in the chain,
+ * such that no targets further down see certain data, or see manipulated forms of the data.
+ * You could, for instance, write a "ToHtmlLoggerNode" that just converted all the log data
+ * it received to HTML and sent it along to the next node in the chain, without printing it
+ * anywhere.
+ */
+public interface LogNode {
+
+    /**
+     * Instructs first LogNode in the list to print the log data provided.
+     * @param priority Log level of the data being logged.  Verbose, Error, etc.
+     * @param tag Tag for for the log data.  Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    public void println(int priority, String tag, String msg, Throwable tr);
+
+}
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/logger/LogView.java b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/logger/LogView.java
new file mode 100644
index 0000000..c01542b
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/logger/LogView.java
@@ -0,0 +1,145 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+import android.app.Activity;
+import android.content.Context;
+import android.util.*;
+import android.widget.TextView;
+
+/** Simple TextView which is used to output log data received through the LogNode interface.
+*/
+public class LogView extends TextView implements LogNode {
+
+    public LogView(Context context) {
+        super(context);
+    }
+
+    public LogView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public LogView(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    /**
+     * Formats the log data and prints it out to the LogView.
+     * @param priority Log level of the data being logged.  Verbose, Error, etc.
+     * @param tag Tag for for the log data.  Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    @Override
+    public void println(int priority, String tag, String msg, Throwable tr) {
+
+        
+        String priorityStr = null;
+
+        // For the purposes of this View, we want to print the priority as readable text.
+        switch(priority) {
+            case android.util.Log.VERBOSE:
+                priorityStr = "VERBOSE";
+                break;
+            case android.util.Log.DEBUG:
+                priorityStr = "DEBUG";
+                break;
+            case android.util.Log.INFO:
+                priorityStr = "INFO";
+                break;
+            case android.util.Log.WARN:
+                priorityStr = "WARN";
+                break;
+            case android.util.Log.ERROR:
+                priorityStr = "ERROR";
+                break;
+            case android.util.Log.ASSERT:
+                priorityStr = "ASSERT";
+                break;
+            default:
+                break;
+        }
+
+        // Handily, the Log class has a facility for converting a stack trace into a usable string.
+        String exceptionStr = null;
+        if (tr != null) {
+            exceptionStr = android.util.Log.getStackTraceString(tr);
+        }
+
+        // Take the priority, tag, message, and exception, and concatenate as necessary
+        // into one usable line of text.
+        final StringBuilder outputBuilder = new StringBuilder();
+
+        String delimiter = "\t";
+        appendIfNotNull(outputBuilder, priorityStr, delimiter);
+        appendIfNotNull(outputBuilder, tag, delimiter);
+        appendIfNotNull(outputBuilder, msg, delimiter);
+        appendIfNotNull(outputBuilder, exceptionStr, delimiter);
+
+        // In case this was originally called from an AsyncTask or some other off-UI thread,
+        // make sure the update occurs within the UI thread.
+        ((Activity) getContext()).runOnUiThread( (new Thread(new Runnable() {
+            @Override
+            public void run() {
+                // Display the text we just generated within the LogView.
+                appendToLog(outputBuilder.toString());
+            }
+        })));
+
+        if (mNext != null) {
+            mNext.println(priority, tag, msg, tr);
+        }
+    }
+
+    public LogNode getNext() {
+        return mNext;
+    }
+
+    public void setNext(LogNode node) {
+        mNext = node;
+    }
+
+    /** Takes a string and adds to it, with a separator, if the bit to be added isn't null. Since
+     * the logger takes so many arguments that might be null, this method helps cut out some of the
+     * agonizing tedium of writing the same 3 lines over and over.
+     * @param source StringBuilder containing the text to append to.
+     * @param addStr The String to append
+     * @param delimiter The String to separate the source and appended strings. A tab or comma,
+     *                  for instance.
+     * @return The fully concatenated String as a StringBuilder
+     */
+    private StringBuilder appendIfNotNull(StringBuilder source, String addStr, String delimiter) {
+        if (addStr != null) {
+            if (addStr.length() == 0) {
+                delimiter = "";
+            }
+
+            return source.append(addStr).append(delimiter);
+        }
+        return source;
+    }
+
+    // The next LogNode in the chain.
+    LogNode mNext;
+
+    /** Outputs the string as a new line of log data in the LogView. */
+    public void appendToLog(String s) {
+        append("\n" + s);
+    }
+
+
+}
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/logger/LogWrapper.java b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/logger/LogWrapper.java
new file mode 100644
index 0000000..16a9e7b
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/logger/LogWrapper.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+import android.util.Log;
+
+/**
+ * Helper class which wraps Android's native Log utility in the Logger interface.  This way
+ * normal DDMS output can be one of the many targets receiving and outputting logs simultaneously.
+ */
+public class LogWrapper implements LogNode {
+
+    // For piping:  The next node to receive Log data after this one has done its work.
+    private LogNode mNext;
+
+    /**
+     * Returns the next LogNode in the linked list.
+     */
+    public LogNode getNext() {
+        return mNext;
+    }
+
+    /**
+     * Sets the LogNode data will be sent to..
+     */
+    public void setNext(LogNode node) {
+        mNext = node;
+    }
+
+    /**
+     * Prints data out to the console using Android's native log mechanism.
+     * @param priority Log level of the data being logged.  Verbose, Error, etc.
+     * @param tag Tag for for the log data.  Can be used to organize log statements.
+     * @param msg The actual message to be logged. The actual message to be logged.
+     * @param tr If an exception was thrown, this can be sent along for the logging facilities
+     *           to extract and print useful information.
+     */
+    @Override
+    public void println(int priority, String tag, String msg, Throwable tr) {
+        // There actually are log methods that don't take a msg parameter.  For now,
+        // if that's the case, just convert null to the empty string and move on.
+        String useMsg = msg;
+        if (useMsg == null) {
+            useMsg = "";
+        }
+
+        // If an exeption was provided, convert that exception to a usable string and attach
+        // it to the end of the msg method.
+        if (tr != null) {
+            msg += "\n" + Log.getStackTraceString(tr);
+        }
+
+        // This is functionally identical to Log.x(tag, useMsg);
+        // For instance, if priority were Log.VERBOSE, this would be the same as Log.v(tag, useMsg)
+        Log.println(priority, tag, useMsg);
+
+        // If this isn't the last node in the chain, move things along.
+        if (mNext != null) {
+            mNext.println(priority, tag, msg, tr);
+        }
+    }
+}
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java
new file mode 100644
index 0000000..19967dc
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Simple {@link LogNode} filter, removes everything except the message.
+ * Useful for situations like on-screen log output where you don't want a lot of metadata displayed,
+ * just easy-to-read message updates as they're happening.
+ */
+public class MessageOnlyLogFilter implements LogNode {
+
+    LogNode mNext;
+
+    /**
+     * Takes the "next" LogNode as a parameter, to simplify chaining.
+     *
+     * @param next The next LogNode in the pipeline.
+     */
+    public MessageOnlyLogFilter(LogNode next) {
+        mNext = next;
+    }
+
+    public MessageOnlyLogFilter() {
+    }
+
+    @Override
+    public void println(int priority, String tag, String msg, Throwable tr) {
+        if (mNext != null) {
+            getNext().println(Log.NONE, null, msg, null);
+        }
+    }
+
+    /**
+     * Returns the next LogNode in the chain.
+     */
+    public LogNode getNext() {
+        return mNext;
+    }
+
+    /**
+     * Sets the LogNode data will be sent to..
+     */
+    public void setNext(LogNode node) {
+        mNext = node;
+    }
+
+}
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/view/SlidingTabLayout.java b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/view/SlidingTabLayout.java
new file mode 100644
index 0000000..20049e3
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/view/SlidingTabLayout.java
@@ -0,0 +1,314 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.common.view;
+
+import android.content.Context;
+import android.graphics.Typeface;
+import android.os.Build;
+import android.support.v4.view.PagerAdapter;
+import android.support.v4.view.ViewPager;
+import android.util.AttributeSet;
+import android.util.TypedValue;
+import android.view.Gravity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.HorizontalScrollView;
+import android.widget.TextView;
+
+/**
+ * To be used with ViewPager to provide a tab indicator component which give constant feedback as to
+ * the user's scroll progress.
+ * <p>
+ * To use the component, simply add it to your view hierarchy. Then in your
+ * {@link android.app.Activity} or {@link android.support.v4.app.Fragment} call
+ * {@link #setViewPager(ViewPager)} providing it the ViewPager this layout is being used for.
+ * <p>
+ * The colors can be customized in two ways. The first and simplest is to provide an array of colors
+ * via {@link #setSelectedIndicatorColors(int...)} and {@link #setDividerColors(int...)}. The
+ * alternative is via the {@link TabColorizer} interface which provides you complete control over
+ * which color is used for any individual position.
+ * <p>
+ * The views used as tabs can be customized by calling {@link #setCustomTabView(int, int)},
+ * providing the layout ID of your custom layout.
+ */
+public class SlidingTabLayout extends HorizontalScrollView {
+
+    /**
+     * Allows complete control over the colors drawn in the tab layout. Set with
+     * {@link #setCustomTabColorizer(TabColorizer)}.
+     */
+    public interface TabColorizer {
+
+        /**
+         * @return return the color of the indicator used when {@code position} is selected.
+         */
+        int getIndicatorColor(int position);
+
+        /**
+         * @return return the color of the divider drawn to the right of {@code position}.
+         */
+        int getDividerColor(int position);
+
+    }
+
+    private static final int TITLE_OFFSET_DIPS = 24;
+    private static final int TAB_VIEW_PADDING_DIPS = 16;
+    private static final int TAB_VIEW_TEXT_SIZE_SP = 12;
+
+    private int mTitleOffset;
+
+    private int mTabViewLayoutId;
+    private int mTabViewTextViewId;
+
+    private ViewPager mViewPager;
+    private ViewPager.OnPageChangeListener mViewPagerPageChangeListener;
+
+    private final SlidingTabStrip mTabStrip;
+
+    public SlidingTabLayout(Context context) {
+        this(context, null);
+    }
+
+    public SlidingTabLayout(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public SlidingTabLayout(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+
+        // Disable the Scroll Bar
+        setHorizontalScrollBarEnabled(false);
+        // Make sure that the Tab Strips fills this View
+        setFillViewport(true);
+
+        mTitleOffset = (int) (TITLE_OFFSET_DIPS * getResources().getDisplayMetrics().density);
+
+        mTabStrip = new SlidingTabStrip(context);
+        addView(mTabStrip, LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
+    }
+
+    /**
+     * Set the custom {@link TabColorizer} to be used.
+     *
+     * If you only require simple custmisation then you can use
+     * {@link #setSelectedIndicatorColors(int...)} and {@link #setDividerColors(int...)} to achieve
+     * similar effects.
+     */
+    public void setCustomTabColorizer(TabColorizer tabColorizer) {
+        mTabStrip.setCustomTabColorizer(tabColorizer);
+    }
+
+    /**
+     * Sets the colors to be used for indicating the selected tab. These colors are treated as a
+     * circular array. Providing one color will mean that all tabs are indicated with the same color.
+     */
+    public void setSelectedIndicatorColors(int... colors) {
+        mTabStrip.setSelectedIndicatorColors(colors);
+    }
+
+    /**
+     * Sets the colors to be used for tab dividers. These colors are treated as a circular array.
+     * Providing one color will mean that all tabs are indicated with the same color.
+     */
+    public void setDividerColors(int... colors) {
+        mTabStrip.setDividerColors(colors);
+    }
+
+    /**
+     * Set the {@link ViewPager.OnPageChangeListener}. When using {@link SlidingTabLayout} you are
+     * required to set any {@link ViewPager.OnPageChangeListener} through this method. This is so
+     * that the layout can update it's scroll position correctly.
+     *
+     * @see ViewPager#setOnPageChangeListener(ViewPager.OnPageChangeListener)
+     */
+    public void setOnPageChangeListener(ViewPager.OnPageChangeListener listener) {
+        mViewPagerPageChangeListener = listener;
+    }
+
+    /**
+     * Set the custom layout to be inflated for the tab views.
+     *
+     * @param layoutResId Layout id to be inflated
+     * @param textViewId id of the {@link TextView} in the inflated view
+     */
+    public void setCustomTabView(int layoutResId, int textViewId) {
+        mTabViewLayoutId = layoutResId;
+        mTabViewTextViewId = textViewId;
+    }
+
+    /**
+     * Sets the associated view pager. Note that the assumption here is that the pager content
+     * (number of tabs and tab titles) does not change after this call has been made.
+     */
+    public void setViewPager(ViewPager viewPager) {
+        mTabStrip.removeAllViews();
+
+        mViewPager = viewPager;
+        if (viewPager != null) {
+            viewPager.setOnPageChangeListener(new InternalViewPagerListener());
+            populateTabStrip();
+        }
+    }
+
+    /**
+     * Create a default view to be used for tabs. This is called if a custom tab view is not set via
+     * {@link #setCustomTabView(int, int)}.
+     */
+    protected TextView createDefaultTabView(Context context) {
+        TextView textView = new TextView(context);
+        textView.setGravity(Gravity.CENTER);
+        textView.setTextSize(TypedValue.COMPLEX_UNIT_SP, TAB_VIEW_TEXT_SIZE_SP);
+        textView.setTypeface(Typeface.DEFAULT_BOLD);
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
+            // If we're running on Honeycomb or newer, then we can use the Theme's
+            // selectableItemBackground to ensure that the View has a pressed state
+            TypedValue outValue = new TypedValue();
+            getContext().getTheme().resolveAttribute(android.R.attr.selectableItemBackground,
+                    outValue, true);
+            textView.setBackgroundResource(outValue.resourceId);
+        }
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
+            // If we're running on ICS or newer, enable all-caps to match the Action Bar tab style
+            textView.setAllCaps(true);
+        }
+
+        int padding = (int) (TAB_VIEW_PADDING_DIPS * getResources().getDisplayMetrics().density);
+        textView.setPadding(padding, padding, padding, padding);
+
+        return textView;
+    }
+
+    private void populateTabStrip() {
+        final PagerAdapter adapter = mViewPager.getAdapter();
+        final View.OnClickListener tabClickListener = new TabClickListener();
+
+        for (int i = 0; i < adapter.getCount(); i++) {
+            View tabView = null;
+            TextView tabTitleView = null;
+
+            if (mTabViewLayoutId != 0) {
+                // If there is a custom tab view layout id set, try and inflate it
+                tabView = LayoutInflater.from(getContext()).inflate(mTabViewLayoutId, mTabStrip,
+                        false);
+                tabTitleView = (TextView) tabView.findViewById(mTabViewTextViewId);
+            }
+
+            if (tabView == null) {
+                tabView = createDefaultTabView(getContext());
+            }
+
+            if (tabTitleView == null && TextView.class.isInstance(tabView)) {
+                tabTitleView = (TextView) tabView;
+            }
+
+            tabTitleView.setText(adapter.getPageTitle(i));
+            tabView.setOnClickListener(tabClickListener);
+
+            mTabStrip.addView(tabView);
+        }
+    }
+
+    @Override
+    protected void onAttachedToWindow() {
+        super.onAttachedToWindow();
+
+        if (mViewPager != null) {
+            scrollToTab(mViewPager.getCurrentItem(), 0);
+        }
+    }
+
+    private void scrollToTab(int tabIndex, int positionOffset) {
+        final int tabStripChildCount = mTabStrip.getChildCount();
+        if (tabStripChildCount == 0 || tabIndex < 0 || tabIndex >= tabStripChildCount) {
+            return;
+        }
+
+        View selectedChild = mTabStrip.getChildAt(tabIndex);
+        if (selectedChild != null) {
+            int targetScrollX = selectedChild.getLeft() + positionOffset;
+
+            if (tabIndex > 0 || positionOffset > 0) {
+                // If we're not at the first child and are mid-scroll, make sure we obey the offset
+                targetScrollX -= mTitleOffset;
+            }
+
+            scrollTo(targetScrollX, 0);
+        }
+    }
+
+    private class InternalViewPagerListener implements ViewPager.OnPageChangeListener {
+        private int mScrollState;
+
+        @Override
+        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
+            int tabStripChildCount = mTabStrip.getChildCount();
+            if ((tabStripChildCount == 0) || (position < 0) || (position >= tabStripChildCount)) {
+                return;
+            }
+
+            mTabStrip.onViewPagerPageChanged(position, positionOffset);
+
+            View selectedTitle = mTabStrip.getChildAt(position);
+            int extraOffset = (selectedTitle != null)
+                    ? (int) (positionOffset * selectedTitle.getWidth())
+                    : 0;
+            scrollToTab(position, extraOffset);
+
+            if (mViewPagerPageChangeListener != null) {
+                mViewPagerPageChangeListener.onPageScrolled(position, positionOffset,
+                        positionOffsetPixels);
+            }
+        }
+
+        @Override
+        public void onPageScrollStateChanged(int state) {
+            mScrollState = state;
+
+            if (mViewPagerPageChangeListener != null) {
+                mViewPagerPageChangeListener.onPageScrollStateChanged(state);
+            }
+        }
+
+        @Override
+        public void onPageSelected(int position) {
+            if (mScrollState == ViewPager.SCROLL_STATE_IDLE) {
+                mTabStrip.onViewPagerPageChanged(position, 0f);
+                scrollToTab(position, 0);
+            }
+
+            if (mViewPagerPageChangeListener != null) {
+                mViewPagerPageChangeListener.onPageSelected(position);
+            }
+        }
+
+    }
+
+    private class TabClickListener implements View.OnClickListener {
+        @Override
+        public void onClick(View v) {
+            for (int i = 0; i < mTabStrip.getChildCount(); i++) {
+                if (v == mTabStrip.getChildAt(i)) {
+                    mViewPager.setCurrentItem(i);
+                    return;
+                }
+            }
+        }
+    }
+
+}
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/view/SlidingTabStrip.java b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/view/SlidingTabStrip.java
new file mode 100644
index 0000000..d5bbbae
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/common/view/SlidingTabStrip.java
@@ -0,0 +1,208 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.common.view;
+
+import android.R;
+import android.content.Context;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
+import android.util.AttributeSet;
+import android.util.TypedValue;
+import android.view.View;
+import android.widget.LinearLayout;
+
+class SlidingTabStrip extends LinearLayout {
+
+    private static final int DEFAULT_BOTTOM_BORDER_THICKNESS_DIPS = 2;
+    private static final byte DEFAULT_BOTTOM_BORDER_COLOR_ALPHA = 0x26;
+    private static final int SELECTED_INDICATOR_THICKNESS_DIPS = 8;
+    private static final int DEFAULT_SELECTED_INDICATOR_COLOR = 0xFF33B5E5;
+
+    private static final int DEFAULT_DIVIDER_THICKNESS_DIPS = 1;
+    private static final byte DEFAULT_DIVIDER_COLOR_ALPHA = 0x20;
+    private static final float DEFAULT_DIVIDER_HEIGHT = 0.5f;
+
+    private final int mBottomBorderThickness;
+    private final Paint mBottomBorderPaint;
+
+    private final int mSelectedIndicatorThickness;
+    private final Paint mSelectedIndicatorPaint;
+
+    private final int mDefaultBottomBorderColor;
+
+    private final Paint mDividerPaint;
+    private final float mDividerHeight;
+
+    private int mSelectedPosition;
+    private float mSelectionOffset;
+
+    private SlidingTabLayout.TabColorizer mCustomTabColorizer;
+    private final SimpleTabColorizer mDefaultTabColorizer;
+
+    SlidingTabStrip(Context context) {
+        this(context, null);
+    }
+
+    SlidingTabStrip(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        setWillNotDraw(false);
+
+        final float density = getResources().getDisplayMetrics().density;
+
+        TypedValue outValue = new TypedValue();
+        context.getTheme().resolveAttribute(R.attr.colorForeground, outValue, true);
+        final int themeForegroundColor =  outValue.data;
+
+        mDefaultBottomBorderColor = setColorAlpha(themeForegroundColor,
+                DEFAULT_BOTTOM_BORDER_COLOR_ALPHA);
+
+        mDefaultTabColorizer = new SimpleTabColorizer();
+        mDefaultTabColorizer.setIndicatorColors(DEFAULT_SELECTED_INDICATOR_COLOR);
+        mDefaultTabColorizer.setDividerColors(setColorAlpha(themeForegroundColor,
+                DEFAULT_DIVIDER_COLOR_ALPHA));
+
+        mBottomBorderThickness = (int) (DEFAULT_BOTTOM_BORDER_THICKNESS_DIPS * density);
+        mBottomBorderPaint = new Paint();
+        mBottomBorderPaint.setColor(mDefaultBottomBorderColor);
+
+        mSelectedIndicatorThickness = (int) (SELECTED_INDICATOR_THICKNESS_DIPS * density);
+        mSelectedIndicatorPaint = new Paint();
+
+        mDividerHeight = DEFAULT_DIVIDER_HEIGHT;
+        mDividerPaint = new Paint();
+        mDividerPaint.setStrokeWidth((int) (DEFAULT_DIVIDER_THICKNESS_DIPS * density));
+    }
+
+    void setCustomTabColorizer(SlidingTabLayout.TabColorizer customTabColorizer) {
+        mCustomTabColorizer = customTabColorizer;
+        invalidate();
+    }
+
+    void setSelectedIndicatorColors(int... colors) {
+        // Make sure that the custom colorizer is removed
+        mCustomTabColorizer = null;
+        mDefaultTabColorizer.setIndicatorColors(colors);
+        invalidate();
+    }
+
+    void setDividerColors(int... colors) {
+        // Make sure that the custom colorizer is removed
+        mCustomTabColorizer = null;
+        mDefaultTabColorizer.setDividerColors(colors);
+        invalidate();
+    }
+
+    void onViewPagerPageChanged(int position, float positionOffset) {
+        mSelectedPosition = position;
+        mSelectionOffset = positionOffset;
+        invalidate();
+    }
+
+    @Override
+    protected void onDraw(Canvas canvas) {
+        final int height = getHeight();
+        final int childCount = getChildCount();
+        final int dividerHeightPx = (int) (Math.min(Math.max(0f, mDividerHeight), 1f) * height);
+        final SlidingTabLayout.TabColorizer tabColorizer = mCustomTabColorizer != null
+                ? mCustomTabColorizer
+                : mDefaultTabColorizer;
+
+        // Thick colored underline below the current selection
+        if (childCount > 0) {
+            View selectedTitle = getChildAt(mSelectedPosition);
+            int left = selectedTitle.getLeft();
+            int right = selectedTitle.getRight();
+            int color = tabColorizer.getIndicatorColor(mSelectedPosition);
+
+            if (mSelectionOffset > 0f && mSelectedPosition < (getChildCount() - 1)) {
+                int nextColor = tabColorizer.getIndicatorColor(mSelectedPosition + 1);
+                if (color != nextColor) {
+                    color = blendColors(nextColor, color, mSelectionOffset);
+                }
+
+                // Draw the selection partway between the tabs
+                View nextTitle = getChildAt(mSelectedPosition + 1);
+                left = (int) (mSelectionOffset * nextTitle.getLeft() +
+                        (1.0f - mSelectionOffset) * left);
+                right = (int) (mSelectionOffset * nextTitle.getRight() +
+                        (1.0f - mSelectionOffset) * right);
+            }
+
+            mSelectedIndicatorPaint.setColor(color);
+
+            canvas.drawRect(left, height - mSelectedIndicatorThickness, right,
+                    height, mSelectedIndicatorPaint);
+        }
+
+        // Thin underline along the entire bottom edge
+        canvas.drawRect(0, height - mBottomBorderThickness, getWidth(), height, mBottomBorderPaint);
+
+        // Vertical separators between the titles
+        int separatorTop = (height - dividerHeightPx) / 2;
+        for (int i = 0; i < childCount - 1; i++) {
+            View child = getChildAt(i);
+            mDividerPaint.setColor(tabColorizer.getDividerColor(i));
+            canvas.drawLine(child.getRight(), separatorTop, child.getRight(),
+                    separatorTop + dividerHeightPx, mDividerPaint);
+        }
+    }
+
+    /**
+     * Set the alpha value of the {@code color} to be the given {@code alpha} value.
+     */
+    private static int setColorAlpha(int color, byte alpha) {
+        return Color.argb(alpha, Color.red(color), Color.green(color), Color.blue(color));
+    }
+
+    /**
+     * Blend {@code color1} and {@code color2} using the given ratio.
+     *
+     * @param ratio of which to blend. 1.0 will return {@code color1}, 0.5 will give an even blend,
+     *              0.0 will return {@code color2}.
+     */
+    private static int blendColors(int color1, int color2, float ratio) {
+        final float inverseRation = 1f - ratio;
+        float r = (Color.red(color1) * ratio) + (Color.red(color2) * inverseRation);
+        float g = (Color.green(color1) * ratio) + (Color.green(color2) * inverseRation);
+        float b = (Color.blue(color1) * ratio) + (Color.blue(color2) * inverseRation);
+        return Color.rgb((int) r, (int) g, (int) b);
+    }
+
+    private static class SimpleTabColorizer implements SlidingTabLayout.TabColorizer {
+        private int[] mIndicatorColors;
+        private int[] mDividerColors;
+
+        @Override
+        public final int getIndicatorColor(int position) {
+            return mIndicatorColors[position % mIndicatorColors.length];
+        }
+
+        @Override
+        public final int getDividerColor(int position) {
+            return mDividerColors[position % mDividerColors.length];
+        }
+
+        void setIndicatorColors(int... colors) {
+            mIndicatorColors = colors;
+        }
+
+        void setDividerColors(int... colors) {
+            mDividerColors = colors;
+        }
+    }
+}
\ No newline at end of file
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/slidingtabscolors/ContentFragment.java b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/slidingtabscolors/ContentFragment.java
new file mode 100644
index 0000000..4715fd7
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/slidingtabscolors/ContentFragment.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.slidingtabscolors;
+
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+/**
+ * Simple Fragment used to display some meaningful content for each page in the sample's
+ * {@link android.support.v4.view.ViewPager}.
+ */
+public class ContentFragment extends Fragment {
+
+    private static final String KEY_TITLE = "title";
+    private static final String KEY_INDICATOR_COLOR = "indicator_color";
+    private static final String KEY_DIVIDER_COLOR = "divider_color";
+
+    /**
+     * @return a new instance of {@link ContentFragment}, adding the parameters into a bundle and
+     * setting them as arguments.
+     */
+    public static ContentFragment newInstance(CharSequence title, int indicatorColor,
+            int dividerColor) {
+        Bundle bundle = new Bundle();
+        bundle.putCharSequence(KEY_TITLE, title);
+        bundle.putInt(KEY_INDICATOR_COLOR, indicatorColor);
+        bundle.putInt(KEY_DIVIDER_COLOR, dividerColor);
+
+        ContentFragment fragment = new ContentFragment();
+        fragment.setArguments(bundle);
+
+        return fragment;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+            Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.pager_item, container, false);
+    }
+
+    @Override
+    public void onViewCreated(View view, Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+
+        Bundle args = getArguments();
+
+        if (args != null) {
+            TextView title = (TextView) view.findViewById(R.id.item_title);
+            title.setText("Title: " + args.getCharSequence(KEY_TITLE));
+
+            int indicatorColor = args.getInt(KEY_INDICATOR_COLOR);
+            TextView indicatorColorView = (TextView) view.findViewById(R.id.item_indicator_color);
+            indicatorColorView.setText("Indicator: #" + Integer.toHexString(indicatorColor));
+            indicatorColorView.setTextColor(indicatorColor);
+
+            int dividerColor = args.getInt(KEY_DIVIDER_COLOR);
+            TextView dividerColorView = (TextView) view.findViewById(R.id.item_divider_color);
+            dividerColorView.setText("Divider: #" + Integer.toHexString(dividerColor));
+            dividerColorView.setTextColor(dividerColor);
+        }
+    }
+}
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/slidingtabscolors/MainActivity.java b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/slidingtabscolors/MainActivity.java
new file mode 100644
index 0000000..d3d7567
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/slidingtabscolors/MainActivity.java
@@ -0,0 +1,110 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+
+
+package com.example.android.slidingtabscolors;
+
+import android.os.Bundle;
+import android.support.v4.app.FragmentTransaction;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.widget.ViewAnimator;
+
+import com.example.android.common.activities.SampleActivityBase;
+import com.example.android.common.logger.Log;
+import com.example.android.common.logger.LogFragment;
+import com.example.android.common.logger.LogWrapper;
+import com.example.android.common.logger.MessageOnlyLogFilter;
+
+/**
+ * A simple launcher activity containing a summary sample description, sample log and a custom
+ * {@link android.support.v4.app.Fragment} which can display a view.
+ * <p>
+ * For devices with displays with a width of 720dp or greater, the sample log is always visible,
+ * on other devices it's visibility is controlled by an item on the Action Bar.
+ */
+public class MainActivity extends SampleActivityBase {
+
+    public static final String TAG = "MainActivity";
+
+    // Whether the Log Fragment is currently shown
+    private boolean mLogShown;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
+        SlidingTabsColorsFragment fragment = new SlidingTabsColorsFragment();
+        transaction.replace(R.id.sample_content_fragment, fragment);
+        transaction.commit();
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.main, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onPrepareOptionsMenu(Menu menu) {
+        MenuItem logToggle = menu.findItem(R.id.menu_toggle_log);
+        logToggle.setVisible(findViewById(R.id.sample_output) instanceof ViewAnimator);
+        logToggle.setTitle(mLogShown ? R.string.sample_hide_log : R.string.sample_show_log);
+
+        return super.onPrepareOptionsMenu(menu);
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch(item.getItemId()) {
+            case R.id.menu_toggle_log:
+                mLogShown = !mLogShown;
+                ViewAnimator output = (ViewAnimator) findViewById(R.id.sample_output);
+                if (mLogShown) {
+                    output.setDisplayedChild(1);
+                } else {
+                    output.setDisplayedChild(0);
+                }
+                supportInvalidateOptionsMenu();
+                return true;
+        }
+        return super.onOptionsItemSelected(item);
+    }
+
+    /** Create a chain of targets that will receive log data */
+    @Override
+    public void initializeLogging() {
+        // Wraps Android's native log framework.
+        LogWrapper logWrapper = new LogWrapper();
+        // Using Log, front-end to the logging chain, emulates android.util.log method signatures.
+        Log.setLogNode(logWrapper);
+
+        // Filter strips out everything except the message text.
+        MessageOnlyLogFilter msgFilter = new MessageOnlyLogFilter();
+        logWrapper.setNext(msgFilter);
+
+        // On screen logging via a fragment with a TextView.
+        LogFragment logFragment = (LogFragment) getSupportFragmentManager()
+                .findFragmentById(R.id.log_fragment);
+        msgFilter.setNext(logFragment.getLogView());
+
+        Log.i(TAG, "Ready");
+    }
+}
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/slidingtabscolors/SlidingTabsColorsFragment.java b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/slidingtabscolors/SlidingTabsColorsFragment.java
new file mode 100644
index 0000000..1e5c3e3
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/java/com/example/android/slidingtabscolors/SlidingTabsColorsFragment.java
@@ -0,0 +1,239 @@
+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.slidingtabscolors;
+
+import com.example.android.common.view.SlidingTabLayout;
+
+import android.graphics.Color;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentManager;
+import android.support.v4.app.FragmentPagerAdapter;
+import android.support.v4.view.ViewPager;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * A basic sample which shows how to use {@link com.example.android.common.view.SlidingTabLayout}
+ * to display a custom {@link ViewPager} title strip which gives continuous feedback to the user
+ * when scrolling.
+ */
+public class SlidingTabsColorsFragment extends Fragment {
+
+    /**
+     * This class represents a tab to be displayed by {@link ViewPager} and it's associated
+     * {@link SlidingTabLayout}.
+     */
+    static class SamplePagerItem {
+        private final CharSequence mTitle;
+        private final int mIndicatorColor;
+        private final int mDividerColor;
+
+        SamplePagerItem(CharSequence title, int indicatorColor, int dividerColor) {
+            mTitle = title;
+            mIndicatorColor = indicatorColor;
+            mDividerColor = dividerColor;
+        }
+
+        /**
+         * @return A new {@link Fragment} to be displayed by a {@link ViewPager}
+         */
+        Fragment createFragment() {
+            return ContentFragment.newInstance(mTitle, mIndicatorColor, mDividerColor);
+        }
+
+        /**
+         * @return the title which represents this tab. In this sample this is used directly by
+         * {@link android.support.v4.view.PagerAdapter#getPageTitle(int)}
+         */
+        CharSequence getTitle() {
+            return mTitle;
+        }
+
+        /**
+         * @return the color to be used for indicator on the {@link SlidingTabLayout}
+         */
+        int getIndicatorColor() {
+            return mIndicatorColor;
+        }
+
+        /**
+         * @return the color to be used for right divider on the {@link SlidingTabLayout}
+         */
+        int getDividerColor() {
+            return mDividerColor;
+        }
+    }
+
+    static final String LOG_TAG = "SlidingTabsColorsFragment";
+
+    /**
+     * A custom {@link ViewPager} title strip which looks much like Tabs present in Android v4.0 and
+     * above, but is designed to give continuous feedback to the user when scrolling.
+     */
+    private SlidingTabLayout mSlidingTabLayout;
+
+    /**
+     * A {@link ViewPager} which will be used in conjunction with the {@link SlidingTabLayout} above.
+     */
+    private ViewPager mViewPager;
+
+    /**
+     * List of {@link SamplePagerItem} which represent this sample's tabs.
+     */
+    private List<SamplePagerItem> mTabs = new ArrayList<SamplePagerItem>();
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        // BEGIN_INCLUDE (populate_tabs)
+        /**
+         * Populate our tab list with tabs. Each item contains a title, indicator color and divider
+         * color, which are used by {@link SlidingTabLayout}.
+         */
+        mTabs.add(new SamplePagerItem(
+                getString(R.string.tab_stream), // Title
+                Color.BLUE, // Indicator color
+                Color.GRAY // Divider color
+        ));
+
+        mTabs.add(new SamplePagerItem(
+                getString(R.string.tab_messages), // Title
+                Color.RED, // Indicator color
+                Color.GRAY // Divider color
+        ));
+
+        mTabs.add(new SamplePagerItem(
+                getString(R.string.tab_photos), // Title
+                Color.YELLOW, // Indicator color
+                Color.GRAY // Divider color
+        ));
+
+        mTabs.add(new SamplePagerItem(
+                getString(R.string.tab_notifications), // Title
+                Color.GREEN, // Indicator color
+                Color.GRAY // Divider color
+        ));
+        // END_INCLUDE (populate_tabs)
+    }
+
+    /**
+     * Inflates the {@link View} which will be displayed by this {@link Fragment}, from the app's
+     * resources.
+     */
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+            Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment_sample, container, false);
+    }
+
+    // BEGIN_INCLUDE (fragment_onviewcreated)
+    /**
+     * This is called after the {@link #onCreateView(LayoutInflater, ViewGroup, Bundle)} has finished.
+     * Here we can pick out the {@link View}s we need to configure from the content view.
+     *
+     * We set the {@link ViewPager}'s adapter to be an instance of
+     * {@link SampleFragmentPagerAdapter}. The {@link SlidingTabLayout} is then given the
+     * {@link ViewPager} so that it can populate itself.
+     *
+     * @param view View created in {@link #onCreateView(LayoutInflater, ViewGroup, Bundle)}
+     */
+    @Override
+    public void onViewCreated(View view, Bundle savedInstanceState) {
+        // BEGIN_INCLUDE (setup_viewpager)
+        // Get the ViewPager and set it's PagerAdapter so that it can display items
+        mViewPager = (ViewPager) view.findViewById(R.id.viewpager);
+        mViewPager.setAdapter(new SampleFragmentPagerAdapter(getChildFragmentManager()));
+        // END_INCLUDE (setup_viewpager)
+
+        // BEGIN_INCLUDE (setup_slidingtablayout)
+        // Give the SlidingTabLayout the ViewPager, this must be done AFTER the ViewPager has had
+        // it's PagerAdapter set.
+        mSlidingTabLayout = (SlidingTabLayout) view.findViewById(R.id.sliding_tabs);
+        mSlidingTabLayout.setViewPager(mViewPager);
+
+        // BEGIN_INCLUDE (tab_colorizer)
+        // Set a TabColorizer to customize the indicator and divider colors. Here we just retrieve
+        // the tab at the position, and return it's set color
+        mSlidingTabLayout.setCustomTabColorizer(new SlidingTabLayout.TabColorizer() {
+
+            @Override
+            public int getIndicatorColor(int position) {
+                return mTabs.get(position).getIndicatorColor();
+            }
+
+            @Override
+            public int getDividerColor(int position) {
+                return mTabs.get(position).getDividerColor();
+            }
+
+        });
+        // END_INCLUDE (tab_colorizer)
+        // END_INCLUDE (setup_slidingtablayout)
+    }
+    // END_INCLUDE (fragment_onviewcreated)
+
+    /**
+     * The {@link FragmentPagerAdapter} used to display pages in this sample. The individual pages
+     * are instances of {@link ContentFragment} which just display three lines of text. Each page is
+     * created by the relevant {@link SamplePagerItem} for the requested position.
+     * <p>
+     * The important section of this class is the {@link #getPageTitle(int)} method which controls
+     * what is displayed in the {@link SlidingTabLayout}.
+     */
+    class SampleFragmentPagerAdapter extends FragmentPagerAdapter {
+
+        SampleFragmentPagerAdapter(FragmentManager fm) {
+            super(fm);
+        }
+
+        /**
+         * Return the {@link android.support.v4.app.Fragment} to be displayed at {@code position}.
+         * <p>
+         * Here we return the value returned from {@link SamplePagerItem#createFragment()}.
+         */
+        @Override
+        public Fragment getItem(int i) {
+            return mTabs.get(i).createFragment();
+        }
+
+        @Override
+        public int getCount() {
+            return mTabs.size();
+        }
+
+        // BEGIN_INCLUDE (pageradapter_getpagetitle)
+        /**
+         * Return the title of the item at {@code position}. This is important as what this method
+         * returns is what is displayed in the {@link SlidingTabLayout}.
+         * <p>
+         * Here we return the value returned from {@link SamplePagerItem#getTitle()}.
+         */
+        @Override
+        public CharSequence getPageTitle(int position) {
+            return mTabs.get(position).getTitle();
+        }
+        // END_INCLUDE (pageradapter_getpagetitle)
+
+    }
+
+}
\ No newline at end of file
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/drawable-hdpi/ic_launcher.png b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/drawable-hdpi/ic_launcher.png
new file mode 100644
index 0000000..66542ee
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/drawable-hdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/drawable-hdpi/tile.9.png b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/drawable-hdpi/tile.9.png
new file mode 100644
index 0000000..1358628
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/drawable-hdpi/tile.9.png
Binary files differ
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/drawable-mdpi/ic_launcher.png b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/drawable-mdpi/ic_launcher.png
new file mode 100644
index 0000000..56e4726
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/drawable-mdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/drawable-xhdpi/ic_launcher.png b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/drawable-xhdpi/ic_launcher.png
new file mode 100644
index 0000000..ba41664
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/drawable-xhdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/drawable-xxhdpi/ic_launcher.png b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/drawable-xxhdpi/ic_launcher.png
new file mode 100644
index 0000000..c9a51f6
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/drawable-xxhdpi/ic_launcher.png
Binary files differ
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/layout-w720dp/activity_main.xml b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/layout-w720dp/activity_main.xml
new file mode 100755
index 0000000..c9a52f6
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/layout-w720dp/activity_main.xml
@@ -0,0 +1,73 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+<LinearLayout
+      xmlns:android="http://schemas.android.com/apk/res/android"
+      android:orientation="horizontal"
+      android:layout_width="match_parent"
+      android:layout_height="match_parent"
+      android:id="@+id/sample_main_layout">
+
+    <LinearLayout
+          android:id="@+id/sample_output"
+          android:layout_width="0px"
+          android:layout_height="match_parent"
+          android:layout_weight="1"
+          android:orientation="vertical">
+
+        <FrameLayout
+              style="@style/Widget.SampleMessageTile"
+              android:layout_width="match_parent"
+              android:layout_height="wrap_content">
+
+            <TextView
+                  style="@style/Widget.SampleMessage"
+                  android:layout_width="match_parent"
+                  android:layout_height="wrap_content"
+                  android:paddingLeft="@dimen/margin_medium"
+                  android:paddingRight="@dimen/margin_medium"
+                  android:paddingTop="@dimen/margin_large"
+                  android:paddingBottom="@dimen/margin_large"
+                  android:text="@string/intro_message" />
+        </FrameLayout>
+
+        <View
+              android:layout_width="match_parent"
+              android:layout_height="1dp"
+              android:background="@android:color/darker_gray" />
+
+        <fragment
+              android:name="com.example.android.common.logger.LogFragment"
+              android:id="@+id/log_fragment"
+              android:layout_width="match_parent"
+              android:layout_height="0px"
+              android:layout_weight="1" />
+
+    </LinearLayout>
+
+    <View
+          android:layout_width="1dp"
+          android:layout_height="match_parent"
+          android:background="@android:color/darker_gray" />
+
+    <FrameLayout
+          android:id="@+id/sample_content_fragment"
+          android:layout_weight="2"
+          android:layout_width="0px"
+          android:layout_height="match_parent" />
+
+</LinearLayout>
+
+
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/layout/activity_main.xml b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/layout/activity_main.xml
new file mode 100755
index 0000000..1ae4f98
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/layout/activity_main.xml
@@ -0,0 +1,65 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+<LinearLayout
+      xmlns:android="http://schemas.android.com/apk/res/android"
+      android:orientation="vertical"
+      android:layout_width="match_parent"
+      android:layout_height="match_parent"
+      android:id="@+id/sample_main_layout">
+
+    <ViewAnimator
+          android:id="@+id/sample_output"
+          android:layout_width="match_parent"
+          android:layout_height="0px"
+          android:layout_weight="1">
+
+        <ScrollView
+              style="@style/Widget.SampleMessageTile"
+              android:layout_width="match_parent"
+              android:layout_height="match_parent">
+
+            <TextView
+                  style="@style/Widget.SampleMessage"
+                  android:layout_width="match_parent"
+                  android:layout_height="wrap_content"
+                  android:paddingLeft="@dimen/horizontal_page_margin"
+                  android:paddingRight="@dimen/horizontal_page_margin"
+                  android:paddingTop="@dimen/vertical_page_margin"
+                  android:paddingBottom="@dimen/vertical_page_margin"
+                  android:text="@string/intro_message" />
+        </ScrollView>
+
+        <fragment
+              android:name="com.example.android.common.logger.LogFragment"
+              android:id="@+id/log_fragment"
+              android:layout_width="match_parent"
+              android:layout_height="match_parent" />
+
+    </ViewAnimator>
+
+    <View
+          android:layout_width="match_parent"
+          android:layout_height="1dp"
+          android:background="@android:color/darker_gray" />
+
+    <FrameLayout
+          android:id="@+id/sample_content_fragment"
+          android:layout_weight="2"
+          android:layout_width="match_parent"
+          android:layout_height="0px" />
+
+</LinearLayout>
+
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/layout/fragment_sample.xml b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/layout/fragment_sample.xml
new file mode 100644
index 0000000..605cba7
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/layout/fragment_sample.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              android:layout_width="match_parent"
+              android:layout_height="match_parent"
+              android:orientation="vertical">
+
+    <com.example.android.common.view.SlidingTabLayout
+          android:id="@+id/sliding_tabs"
+          android:layout_width="match_parent"
+          android:layout_height="wrap_content" />
+
+    <android.support.v4.view.ViewPager
+          android:id="@+id/viewpager"
+          android:layout_width="match_parent"
+          android:layout_height="0px"
+          android:layout_weight="1"
+          android:background="@android:color/white" />
+
+</LinearLayout>
\ No newline at end of file
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/layout/pager_item.xml b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/layout/pager_item.xml
new file mode 100644
index 0000000..039ceb1
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/layout/pager_item.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              android:layout_width="match_parent"
+              android:layout_height="match_parent"
+              android:orientation="vertical"
+              android:gravity="center">
+
+    <TextView
+          android:id="@+id/item_title"
+          android:layout_width="wrap_content"
+          android:layout_height="wrap_content"
+          android:textAppearance="?android:attr/textAppearanceLarge" />
+
+    <TextView
+          android:id="@+id/item_indicator_color"
+          android:layout_width="wrap_content"
+          android:layout_height="wrap_content"
+          android:textAppearance="?android:attr/textAppearanceLarge" />
+
+    <TextView
+          android:id="@+id/item_divider_color"
+          android:layout_width="wrap_content"
+          android:layout_height="wrap_content"
+          android:textAppearance="?android:attr/textAppearanceLarge" />
+
+</LinearLayout>
\ No newline at end of file
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/menu/main.xml b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/menu/main.xml
new file mode 100644
index 0000000..b49c2c5
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/menu/main.xml
@@ -0,0 +1,21 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:id="@+id/menu_toggle_log"
+          android:showAsAction="always"
+          android:title="@string/sample_show_log" />
+</menu>
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/values-sw600dp/template-dimens.xml b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/values-sw600dp/template-dimens.xml
new file mode 100644
index 0000000..22074a2
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/values-sw600dp/template-dimens.xml
@@ -0,0 +1,24 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <!-- Semantic definitions -->
+
+    <dimen name="horizontal_page_margin">@dimen/margin_huge</dimen>
+    <dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
+
+</resources>
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/values-sw600dp/template-styles.xml b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/values-sw600dp/template-styles.xml
new file mode 100644
index 0000000..03d1974
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/values-sw600dp/template-styles.xml
@@ -0,0 +1,25 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <style name="Widget.SampleMessage">
+        <item name="android:textAppearance">?android:textAppearanceLarge</item>
+        <item name="android:lineSpacingMultiplier">1.2</item>
+        <item name="android:shadowDy">-6.5</item>
+    </style>
+
+</resources>
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/values/base-strings.xml b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/values/base-strings.xml
new file mode 100644
index 0000000..89cac2d
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/values/base-strings.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+
+
+<resources>
+    <string name="app_name">SlidingTabsColors</string>
+    <string name="intro_message">
+        <![CDATA[
+        
+            
+            A more advanced sample which shows how to use SlidingTabLayout to display a custom
+            ViewPager title strip, with custom coloring for each tab.
+            
+        
+        ]]>
+    </string>
+</resources>
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/values/strings.xml b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/values/strings.xml
new file mode 100755
index 0000000..7b9d9ec
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/values/strings.xml
@@ -0,0 +1,19 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+<resources>
+    <string name="sample_show_log">Show Log</string>
+    <string name="sample_hide_log">Hide Log</string>
+</resources>
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/values/template-dimens.xml b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/values/template-dimens.xml
new file mode 100644
index 0000000..39e710b
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/values/template-dimens.xml
@@ -0,0 +1,32 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <!-- Define standard dimensions to comply with Holo-style grids and rhythm. -->
+
+    <dimen name="margin_tiny">4dp</dimen>
+    <dimen name="margin_small">8dp</dimen>
+    <dimen name="margin_medium">16dp</dimen>
+    <dimen name="margin_large">32dp</dimen>
+    <dimen name="margin_huge">64dp</dimen>
+
+    <!-- Semantic definitions -->
+
+    <dimen name="horizontal_page_margin">@dimen/margin_medium</dimen>
+    <dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
+
+</resources>
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/values/template-styles.xml b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/values/template-styles.xml
new file mode 100644
index 0000000..404623e
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/src/main/res/values/template-styles.xml
@@ -0,0 +1,42 @@
+<!--
+  Copyright 2013 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <!-- Activity themes -->
+
+    <style name="Theme.Base" parent="android:Theme.Holo.Light" />
+
+    <style name="Theme.Sample" parent="Theme.Base" />
+
+    <style name="AppTheme" parent="Theme.Sample" />
+    <!-- Widget styling -->
+
+    <style name="Widget" />
+
+    <style name="Widget.SampleMessage">
+        <item name="android:textAppearance">?android:textAppearanceMedium</item>
+        <item name="android:lineSpacingMultiplier">1.1</item>
+    </style>
+
+    <style name="Widget.SampleMessageTile">
+        <item name="android:background">@drawable/tile</item>
+        <item name="android:shadowColor">#7F000000</item>
+        <item name="android:shadowDy">-3.5</item>
+        <item name="android:shadowRadius">2</item>
+    </style>
+
+</resources>
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/tests/AndroidManifest.xml b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/tests/AndroidManifest.xml
new file mode 100644
index 0000000..f9fcf3e
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/tests/AndroidManifest.xml
@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<!-- package name must be unique so suffix with "tests" so package loader doesn't ignore us -->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.example.android.slidingtabscolors.tests"
+          android:versionCode="1"
+          android:versionName="1.0">
+
+    <uses-sdk
+            android:minSdkVersion="4"
+            android:targetSdkVersion="19" />
+
+    <!-- We add an application tag here just so that we can indicate that
+         this package needs to link against the android.test library,
+         which is needed when building test cases. -->
+    <application>
+        <uses-library android:name="android.test.runner" />
+    </application>
+
+    <!--
+    Specifies the instrumentation test runner used to run the tests.
+    -->
+    <instrumentation
+            android:name="android.test.InstrumentationTestRunner"
+            android:targetPackage="com.example.android.slidingtabscolors"
+            android:label="Tests for com.example.android.slidingtabscolors" />
+
+</manifest>
diff --git a/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/tests/src/com/example/android/slidingtabscolors/tests/SampleTests.java b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/tests/src/com/example/android/slidingtabscolors/tests/SampleTests.java
new file mode 100644
index 0000000..caab5d8
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/SlidingTabsColorsSample/tests/src/com/example/android/slidingtabscolors/tests/SampleTests.java
@@ -0,0 +1,79 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+
+/*
+* Copyright (C) 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*      http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+package com.example.android.slidingtabscolors.tests;
+
+import com.example.android.slidingtabscolors.*;
+
+import android.test.ActivityInstrumentationTestCase2;
+
+/**
+* Tests for SlidingTabsColors sample.
+*/
+public class SampleTests extends ActivityInstrumentationTestCase2<MainActivity> {
+
+    private MainActivity mTestActivity;
+    private SlidingTabsColorsFragment mTestFragment;
+
+    public SampleTests() {
+        super(MainActivity.class);
+    }
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+
+        // Starts the activity under test using the default Intent with:
+        // action = {@link Intent#ACTION_MAIN}
+        // flags = {@link Intent#FLAG_ACTIVITY_NEW_TASK}
+        // All other fields are null or empty.
+        mTestActivity = getActivity();
+        mTestFragment = (SlidingTabsColorsFragment)
+            mTestActivity.getSupportFragmentManager().getFragments().get(1);
+    }
+
+    /**
+    * Test if the test fixture has been set up correctly.
+    */
+    public void testPreconditions() {
+        //Try to add a message to add context to your assertions. These messages will be shown if
+        //a tests fails and make it easy to understand why a test failed
+        assertNotNull("mTestActivity is null", mTestActivity);
+        assertNotNull("mTestFragment is null", mTestFragment);
+    }
+
+    /**
+    * Add more tests below.
+    */
+
+}
\ No newline at end of file
diff --git a/prebuilts/gradle/SlidingTabsColors/build.gradle b/prebuilts/gradle/SlidingTabsColors/build.gradle
new file mode 100644
index 0000000..5cf5d3d
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/build.gradle
@@ -0,0 +1,14 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/prebuilts/gradle/SlidingTabsColors/gradle/wrapper/gradle-wrapper.jar b/prebuilts/gradle/SlidingTabsColors/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..8c0fb64
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/gradle/wrapper/gradle-wrapper.jar
Binary files differ
diff --git a/prebuilts/gradle/SlidingTabsColors/gradle/wrapper/gradle-wrapper.properties b/prebuilts/gradle/SlidingTabsColors/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..2ea0b84
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Thu Feb 06 11:07:10 GMT 2014
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=http\://services.gradle.org/distributions/gradle-1.10-all.zip
diff --git a/prebuilts/gradle/SlidingTabsColors/gradlew b/prebuilts/gradle/SlidingTabsColors/gradlew
new file mode 100755
index 0000000..91a7e26
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/gradlew
@@ -0,0 +1,164 @@
+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+esac
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched.
+if $cygwin ; then
+    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+fi
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >&-
+APP_HOME="`pwd -P`"
+cd "$SAVED" >&-
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+    JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
diff --git a/prebuilts/gradle/SlidingTabsColors/gradlew.bat b/prebuilts/gradle/SlidingTabsColors/gradlew.bat
new file mode 100644
index 0000000..aec9973
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/gradlew.bat
@@ -0,0 +1,90 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windowz variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+if "%@eval[2+2]" == "4" goto 4NT_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+goto execute
+
+:4NT_args
+@rem Get arguments from the 4NT Shell from JP Software
+set CMD_LINE_ARGS=%$
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/prebuilts/gradle/SlidingTabsColors/settings.gradle b/prebuilts/gradle/SlidingTabsColors/settings.gradle
new file mode 100644
index 0000000..3c5586a
--- /dev/null
+++ b/prebuilts/gradle/SlidingTabsColors/settings.gradle
@@ -0,0 +1,4 @@
+
+
+
+include 'SlidingTabsColorsSample'
diff --git a/prebuilts/gradle/StorageClient/StorageClientSample/build.gradle b/prebuilts/gradle/StorageClient/StorageClientSample/build.gradle
index 7870f12..5681239 100644
--- a/prebuilts/gradle/StorageClient/StorageClientSample/build.gradle
+++ b/prebuilts/gradle/StorageClient/StorageClientSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,7 +15,7 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 4
-    compile "com.android.support:support-v4:18.0.+"
+    compile "com.android.support:support-v4:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -28,7 +28,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/StorageProvider/StorageProviderSample/build.gradle b/prebuilts/gradle/StorageProvider/StorageProviderSample/build.gradle
index fd83e0b..f73b206 100644
--- a/prebuilts/gradle/StorageProvider/StorageProviderSample/build.gradle
+++ b/prebuilts/gradle/StorageProvider/StorageProviderSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,7 +15,7 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 19
-    compile "com.android.support:support-v13:18.0.+"
+    compile "com.android.support:support-v13:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -28,7 +28,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/TextLinkify/TextLinkifySample/build.gradle b/prebuilts/gradle/TextLinkify/TextLinkifySample/build.gradle
index 7870f12..5681239 100644
--- a/prebuilts/gradle/TextLinkify/TextLinkifySample/build.gradle
+++ b/prebuilts/gradle/TextLinkify/TextLinkifySample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,7 +15,7 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 4
-    compile "com.android.support:support-v4:18.0.+"
+    compile "com.android.support:support-v4:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -28,7 +28,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {
diff --git a/prebuilts/gradle/TextSwitcher/TextSwitcherSample/build.gradle b/prebuilts/gradle/TextSwitcher/TextSwitcherSample/build.gradle
index 7870f12..5681239 100644
--- a/prebuilts/gradle/TextSwitcher/TextSwitcherSample/build.gradle
+++ b/prebuilts/gradle/TextSwitcher/TextSwitcherSample/build.gradle
@@ -7,7 +7,7 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.6.+'
+        classpath 'com.android.tools.build:gradle:0.8.+'
     }
 }
 
@@ -15,7 +15,7 @@
 
 dependencies {
     // Add the support lib that is appropriate for SDK 4
-    compile "com.android.support:support-v4:18.0.+"
+    compile "com.android.support:support-v4:19.0.+"
 }
 
 // The sample build uses multiple directories to
@@ -28,7 +28,7 @@
 
 android {
     compileSdkVersion 19
-    buildToolsVersion "19"
+    buildToolsVersion "19.0.1"
 
     sourceSets {
         main {