Camera2Basic: Several fixes

- Add uses-feature tags to AndroidManifest.xml
- Fix duplicated captures on some devices
- Fix control not available on Nexus 9
- Support portrait 180 degrees
- Fix crash on Nexus 4

Bug: 20494495
Change-Id: Ib1412e0d5609f09b8941b10af9c856009883859d
diff --git a/media/Camera2Basic/Application/src/main/AndroidManifest.xml b/media/Camera2Basic/Application/src/main/AndroidManifest.xml
index 87d9af1..5b0b5b0 100644
--- a/media/Camera2Basic/Application/src/main/AndroidManifest.xml
+++ b/media/Camera2Basic/Application/src/main/AndroidManifest.xml
@@ -15,16 +15,14 @@
  limitations under the License.
 -->
 
-
-
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.example.android.camera2basic"
-    android:versionCode="1"
-    android:versionName="1.0">
+    package="com.example.android.camera2basic">
 
-    <!-- Min/target SDK versions (<uses-sdk>) managed by build.gradle -->
     <uses-permission android:name="android.permission.CAMERA" />
 
+    <uses-feature android:name="android.hardware.camera" />
+    <uses-feature android:name="android.hardware.camera.autofocus" />
+
     <application android:allowBackup="true"
         android:label="@string/app_name"
         android:icon="@drawable/ic_launcher"
diff --git a/media/Camera2Basic/Application/src/main/java/com/example/android/camera2basic/Camera2BasicFragment.java b/media/Camera2Basic/Application/src/main/java/com/example/android/camera2basic/Camera2BasicFragment.java
index 2414ed6..020ca14 100644
--- a/media/Camera2Basic/Application/src/main/java/com/example/android/camera2basic/Camera2BasicFragment.java
+++ b/media/Camera2Basic/Application/src/main/java/com/example/android/camera2basic/Camera2BasicFragment.java
@@ -55,7 +55,6 @@
 import android.widget.Toast;
 
 import java.io.File;
-import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.nio.ByteBuffer;
@@ -264,14 +263,16 @@
                     break;
                 }
                 case STATE_WAITING_LOCK: {
-                    int afState = result.get(CaptureResult.CONTROL_AF_STATE);
-                    if (CaptureResult.CONTROL_AF_STATE_FOCUSED_LOCKED == afState ||
+                    Integer afState = result.get(CaptureResult.CONTROL_AF_STATE);
+                    if (afState == null) {
+                        captureStillPicture();
+                    } else if (CaptureResult.CONTROL_AF_STATE_FOCUSED_LOCKED == afState ||
                             CaptureResult.CONTROL_AF_STATE_NOT_FOCUSED_LOCKED == afState) {
                         // CONTROL_AE_STATE can be null on some devices
                         Integer aeState = result.get(CaptureResult.CONTROL_AE_STATE);
                         if (aeState == null ||
                                 aeState == CaptureResult.CONTROL_AE_STATE_CONVERGED) {
-                            mState = STATE_WAITING_NON_PRECAPTURE;
+                            mState = STATE_PICTURE_TAKEN;
                             captureStillPicture();
                         } else {
                             runPrecaptureSequence();
@@ -636,6 +637,8 @@
                     (float) viewWidth / mPreviewSize.getWidth());
             matrix.postScale(scale, scale, centerX, centerY);
             matrix.postRotate(90 * (rotation - 2), centerX, centerY);
+        } else if (Surface.ROTATION_180 == rotation) {
+            matrix.postRotate(180, centerX, centerY);
         }
         mTextureView.setTransform(matrix);
     }
@@ -657,7 +660,7 @@
                     CameraMetadata.CONTROL_AF_TRIGGER_START);
             // Tell #mCaptureCallback to wait for the lock.
             mState = STATE_WAITING_LOCK;
-            mCaptureSession.setRepeatingRequest(mPreviewRequestBuilder.build(), mCaptureCallback,
+            mCaptureSession.capture(mPreviewRequestBuilder.build(), mCaptureCallback,
                     mBackgroundHandler);
         } catch (CameraAccessException e) {
             e.printStackTrace();
@@ -794,8 +797,6 @@
             try {
                 output = new FileOutputStream(mFile);
                 output.write(bytes);
-            } catch (FileNotFoundException e) {
-                e.printStackTrace();
             } catch (IOException e) {
                 e.printStackTrace();
             } finally {
diff --git a/media/Camera2Basic/Application/src/main/res/layout-land/fragment_camera2_basic.xml b/media/Camera2Basic/Application/src/main/res/layout-land/fragment_camera2_basic.xml
index 3a3e2ff..8b2e1ad 100644
--- a/media/Camera2Basic/Application/src/main/res/layout-land/fragment_camera2_basic.xml
+++ b/media/Camera2Basic/Application/src/main/res/layout-land/fragment_camera2_basic.xml
@@ -26,14 +26,14 @@
         android:layout_alignParentTop="true" />
 
     <FrameLayout
+        android:id="@+id/control"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_alignParentBottom="true"
         android:layout_alignParentEnd="true"
         android:layout_alignParentTop="true"
-        android:layout_below="@id/texture"
         android:layout_toRightOf="@id/texture"
-        android:background="#4285f4"
+        android:background="@color/control_background"
         android:orientation="horizontal">
 
         <Button
diff --git a/media/Camera2Basic/Application/src/main/res/layout/fragment_camera2_basic.xml b/media/Camera2Basic/Application/src/main/res/layout/fragment_camera2_basic.xml
index 7d05ab3..9c6dc65 100644
--- a/media/Camera2Basic/Application/src/main/res/layout/fragment_camera2_basic.xml
+++ b/media/Camera2Basic/Application/src/main/res/layout/fragment_camera2_basic.xml
@@ -25,12 +25,12 @@
         android:layout_alignParentTop="true" />
 
     <FrameLayout
+        android:id="@+id/control"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"
+        android:layout_height="112dp"
         android:layout_alignParentBottom="true"
         android:layout_alignParentStart="true"
-        android:layout_below="@id/texture"
-        android:background="#4285f4">
+        android:background="@color/control_background">
 
         <Button
             android:id="@+id/picture"
diff --git a/media/Camera2Basic/Application/src/main/res/values/colors.xml b/media/Camera2Basic/Application/src/main/res/values/colors.xml
new file mode 100644
index 0000000..4b75d2b
--- /dev/null
+++ b/media/Camera2Basic/Application/src/main/res/values/colors.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ Copyright 2015 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>
+    <color name="control_background">#cc4285f4</color>
+</resources>
diff --git a/media/Camera2Basic/LICENSE b/media/Camera2Basic/LICENSE
index 1af981f..4f22946 100644
--- a/media/Camera2Basic/LICENSE
+++ b/media/Camera2Basic/LICENSE
@@ -1,4 +1,6 @@
-                                 Apache License
+Apache License
+--------------
+
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
 
@@ -178,7 +180,7 @@
    APPENDIX: How to apply the Apache License to your work.
 
       To apply the Apache License to your work, attach the following
-      boilerplate notice, with the fields enclosed by brackets "[]"
+      boilerplate notice, with the fields enclosed by brackets "{}"
       replaced with your own identifying information. (Don't include
       the brackets!)  The text should be enclosed in the appropriate
       comment syntax for the file format. We also recommend that a
@@ -186,7 +188,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright 2014 The Android Open Source Project
+   Copyright {yyyy} {name of copyright owner}
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
@@ -199,3 +201,447 @@
    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.
+
+All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
+and *.ogg) are licensed under the CC-BY-NC license. All other files are 
+licensed under the Apache 2 license.
+
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diff --git a/media/Camera2Basic/README.md b/media/Camera2Basic/README.md
index b848e02..d5aa0a8 100644
--- a/media/Camera2Basic/README.md
+++ b/media/Camera2Basic/README.md
@@ -1,3 +1,4 @@
+
 Android Camera2Basic Sample
 ===================================
 
@@ -42,7 +43,7 @@
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 - Android SDK v21
-- Android Build Tools v21.1.1
+- Android Build Tools v22.0.1
 - Android Support Repository
 
 Screenshots