Merge "Add mcc/mnc to SubInfoRecord" into lmp-dev
diff --git a/api/current.txt b/api/current.txt
index 55a3efa..7e2b0ed 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -260,6 +260,7 @@
 
   public static final class R.attr {
     ctor public R.attr();
+    field public static final int __removed2 = 16843937; // 0x10104a1
     field public static final int absListViewStyle = 16842858; // 0x101006a
     field public static final int accessibilityEventTypes = 16843648; // 0x1010380
     field public static final int accessibilityFeedbackType = 16843650; // 0x1010382
@@ -482,7 +483,7 @@
     field public static final int datePickerMode = 16843956; // 0x10104b4
     field public static final int datePickerStyle = 16843612; // 0x101035c
     field public static final int dateTextAppearance = 16843593; // 0x1010349
-    field public static final int dayOfWeekBackgroundColor = 16843924; // 0x1010494
+    field public static final int dayOfWeekBackground = 16843924; // 0x1010494
     field public static final int dayOfWeekTextAppearance = 16843925; // 0x1010495
     field public static final int debuggable = 16842767; // 0x101000f
     field public static final int defaultValue = 16843245; // 0x10101ed
@@ -663,7 +664,6 @@
     field public static final int hasCode = 16842764; // 0x101000c
     field public static final int headerAmPmTextAppearance = 16843936; // 0x10104a0
     field public static final int headerBackground = 16843055; // 0x101012f
-    field public static final int headerBackgroundColor = 16843937; // 0x10104a1
     field public static final int headerDayOfMonthTextAppearance = 16843927; // 0x1010497
     field public static final int headerDividersEnabled = 16843310; // 0x101022e
     field public static final int headerMonthTextAppearance = 16843926; // 0x1010496
@@ -5706,6 +5706,19 @@
 
 package android.app.usage {
 
+  public final class ConfigurationStats implements android.os.Parcelable {
+    ctor public ConfigurationStats(android.app.usage.ConfigurationStats);
+    method public int describeContents();
+    method public int getActivationCount();
+    method public android.content.res.Configuration getConfiguration();
+    method public long getFirstTimeStamp();
+    method public long getLastTimeActive();
+    method public long getLastTimeStamp();
+    method public long getTotalTimeActive();
+    method public void writeToParcel(android.os.Parcel, int);
+    field public static final android.os.Parcelable.Creator CREATOR;
+  }
+
   public final class UsageEvents implements android.os.Parcelable {
     method public int describeContents();
     method public boolean getNextEvent(android.app.usage.UsageEvents.Event);
@@ -5718,9 +5731,11 @@
   public static final class UsageEvents.Event {
     ctor public UsageEvents.Event();
     method public java.lang.String getClassName();
+    method public android.content.res.Configuration getConfiguration();
     method public int getEventType();
     method public java.lang.String getPackageName();
     method public long getTimeStamp();
+    field public static final int CONFIGURATION_CHANGE = 5; // 0x5
     field public static final int MOVE_TO_BACKGROUND = 2; // 0x2
     field public static final int MOVE_TO_FOREGROUND = 1; // 0x1
     field public static final int NONE = 0; // 0x0
@@ -5741,6 +5756,7 @@
 
   public final class UsageStatsManager {
     method public java.util.Map<java.lang.String, android.app.usage.UsageStats> queryAndAggregateUsageStats(long, long);
+    method public java.util.List<android.app.usage.ConfigurationStats> queryConfigurations(int, long, long);
     method public android.app.usage.UsageEvents queryEvents(long, long);
     method public java.util.List<android.app.usage.UsageStats> queryUsageStats(int, long, long);
     field public static final int INTERVAL_BEST = 4; // 0x4
diff --git a/core/java/android/app/AlarmManager.java b/core/java/android/app/AlarmManager.java
index a64e0ed..2c596e5 100644
--- a/core/java/android/app/AlarmManager.java
+++ b/core/java/android/app/AlarmManager.java
@@ -17,6 +17,7 @@
 package android.app;
 
 import android.annotation.SdkConstant;
+import android.annotation.SystemApi;
 import android.content.Context;
 import android.content.Intent;
 import android.os.Build;
@@ -385,6 +386,7 @@
     }
 
     /** @hide */
+    @SystemApi
     public void set(int type, long triggerAtMillis, long windowMillis, long intervalMillis,
             PendingIntent operation, WorkSource workSource) {
         setImpl(type, triggerAtMillis, windowMillis, intervalMillis, operation, workSource, null);
diff --git a/core/java/android/app/usage/ConfigurationStats.java b/core/java/android/app/usage/ConfigurationStats.java
new file mode 100644
index 0000000..080216c
--- /dev/null
+++ b/core/java/android/app/usage/ConfigurationStats.java
@@ -0,0 +1,161 @@
+/**
+ * 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 android.app.usage;
+
+import android.content.res.Configuration;
+import android.os.Parcel;
+import android.os.Parcelable;
+
+/**
+ * Represents the usage statistics of a device {@link android.content.res.Configuration} for a
+ * specific time range.
+ */
+public final class ConfigurationStats implements Parcelable {
+
+    /**
+     * {@hide}
+     */
+    public Configuration mConfiguration;
+
+    /**
+     * {@hide}
+     */
+    public long mBeginTimeStamp;
+
+    /**
+     * {@hide}
+     */
+    public long mEndTimeStamp;
+
+    /**
+     * {@hide}
+     */
+    public long mLastTimeActive;
+
+    /**
+     * {@hide}
+     */
+    public long mTotalTimeActive;
+
+    /**
+     * {@hide}
+     */
+    public int mActivationCount;
+
+    /**
+     * {@hide}
+     */
+    public ConfigurationStats() {
+    }
+
+    public ConfigurationStats(ConfigurationStats stats) {
+        mConfiguration = stats.mConfiguration;
+        mBeginTimeStamp = stats.mBeginTimeStamp;
+        mEndTimeStamp = stats.mEndTimeStamp;
+        mLastTimeActive = stats.mLastTimeActive;
+        mTotalTimeActive = stats.mTotalTimeActive;
+        mActivationCount = stats.mActivationCount;
+    }
+
+    public Configuration getConfiguration() {
+        return mConfiguration;
+    }
+
+    /**
+     * Get the beginning of the time range this {@link ConfigurationStats} represents,
+     * measured in milliseconds since the epoch.
+     * <p/>
+     * See {@link System#currentTimeMillis()}.
+     */
+    public long getFirstTimeStamp() {
+        return mBeginTimeStamp;
+    }
+
+    /**
+     * Get the end of the time range this {@link ConfigurationStats} represents,
+     * measured in milliseconds since the epoch.
+     * <p/>
+     * See {@link System#currentTimeMillis()}.
+     */
+    public long getLastTimeStamp() {
+        return mEndTimeStamp;
+    }
+
+    /**
+     * Get the last time this configuration was active, measured in milliseconds since the epoch.
+     * <p/>
+     * See {@link System#currentTimeMillis()}.
+     */
+    public long getLastTimeActive() {
+        return mLastTimeActive;
+    }
+
+    /**
+     * Get the total time this configuration was active, measured in milliseconds.
+     */
+    public long getTotalTimeActive() {
+        return mTotalTimeActive;
+    }
+
+    /**
+     * Get the number of times this configuration was active.
+     */
+    public int getActivationCount() {
+        return mActivationCount;
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(Parcel dest, int flags) {
+        if (mConfiguration != null) {
+            dest.writeInt(1);
+            mConfiguration.writeToParcel(dest, flags);
+        } else {
+            dest.writeInt(0);
+        }
+
+        dest.writeLong(mBeginTimeStamp);
+        dest.writeLong(mEndTimeStamp);
+        dest.writeLong(mLastTimeActive);
+        dest.writeLong(mTotalTimeActive);
+        dest.writeInt(mActivationCount);
+    }
+
+    public static final Creator<ConfigurationStats> CREATOR = new Creator<ConfigurationStats>() {
+        @Override
+        public ConfigurationStats createFromParcel(Parcel source) {
+            ConfigurationStats stats = new ConfigurationStats();
+            if (source.readInt() != 0) {
+                stats.mConfiguration = Configuration.CREATOR.createFromParcel(source);
+            }
+            stats.mBeginTimeStamp = source.readLong();
+            stats.mEndTimeStamp = source.readLong();
+            stats.mLastTimeActive = source.readLong();
+            stats.mTotalTimeActive = source.readLong();
+            stats.mActivationCount = source.readInt();
+            return stats;
+        }
+
+        @Override
+        public ConfigurationStats[] newArray(int size) {
+            return new ConfigurationStats[size];
+        }
+    };
+}
diff --git a/core/java/android/app/usage/IUsageStatsManager.aidl b/core/java/android/app/usage/IUsageStatsManager.aidl
index 3b09888..4ed1489 100644
--- a/core/java/android/app/usage/IUsageStatsManager.aidl
+++ b/core/java/android/app/usage/IUsageStatsManager.aidl
@@ -27,5 +27,7 @@
 interface IUsageStatsManager {
     ParceledListSlice queryUsageStats(int bucketType, long beginTime, long endTime,
             String callingPackage);
+    ParceledListSlice queryConfigurationStats(int bucketType, long beginTime, long endTime,
+            String callingPackage);
     UsageEvents queryEvents(long beginTime, long endTime, String callingPackage);
 }
diff --git a/core/java/android/app/usage/UsageEvents.java b/core/java/android/app/usage/UsageEvents.java
index fb80de2..1a947ec 100644
--- a/core/java/android/app/usage/UsageEvents.java
+++ b/core/java/android/app/usage/UsageEvents.java
@@ -16,6 +16,7 @@
 package android.app.usage;
 
 import android.content.ComponentName;
+import android.content.res.Configuration;
 import android.os.Parcel;
 import android.os.Parcelable;
 
@@ -63,6 +64,11 @@
         public static final int CONTINUE_PREVIOUS_DAY = 4;
 
         /**
+         * An event type denoting that the device configuration has changed.
+         */
+        public static final int CONFIGURATION_CHANGE = 5;
+
+        /**
          * {@hide}
          */
         public String mPackage;
@@ -83,6 +89,12 @@
         public int mEventType;
 
         /**
+         * Only present for {@link #CONFIGURATION_CHANGE} event types.
+         * {@hide}
+         */
+        public Configuration mConfiguration;
+
+        /**
          * TODO(adamlesinski): Removed before release.
          * {@hide}
          */
@@ -123,6 +135,14 @@
         public int getEventType() {
             return mEventType;
         }
+
+        /**
+         * Returns a {@link Configuration} for this event if the event is of type
+         * {@link #CONFIGURATION_CHANGE}, otherwise it returns null.
+         */
+        public Configuration getConfiguration() {
+            return mConfiguration;
+        }
     }
 
     // Only used when creating the resulting events. Not used for reading/unparceling.
@@ -201,23 +221,9 @@
             return false;
         }
 
-        final int packageIndex = mParcel.readInt();
-        if (packageIndex >= 0) {
-            eventOut.mPackage = mStringPool[packageIndex];
-        } else {
-            eventOut.mPackage = null;
-        }
+        readEventFromParcel(mParcel, eventOut);
 
-        final int classIndex = mParcel.readInt();
-        if (classIndex >= 0) {
-            eventOut.mClass = mStringPool[classIndex];
-        } else {
-            eventOut.mClass = null;
-        }
-        eventOut.mEventType = mParcel.readInt();
-        eventOut.mTimeStamp = mParcel.readLong();
         mIndex++;
-
         if (mIndex >= mEventCount) {
             mParcel.recycle();
             mParcel = null;
@@ -235,11 +241,6 @@
         }
     }
 
-    @Override
-    public int describeContents() {
-        return 0;
-    }
-
     private int findStringIndex(String str) {
         final int index = Arrays.binarySearch(mStringPool, str);
         if (index < 0) {
@@ -248,6 +249,66 @@
         return index;
     }
 
+    /**
+     * Writes a single event to the parcel. Modify this when updating {@link Event}.
+     */
+    private void writeEventToParcel(Event event, Parcel p, int flags) {
+        final int packageIndex;
+        if (event.mPackage != null) {
+            packageIndex = findStringIndex(event.mPackage);
+        } else {
+            packageIndex = -1;
+        }
+
+        final int classIndex;
+        if (event.mClass != null) {
+            classIndex = findStringIndex(event.mClass);
+        } else {
+            classIndex = -1;
+        }
+        p.writeInt(packageIndex);
+        p.writeInt(classIndex);
+        p.writeInt(event.mEventType);
+        p.writeLong(event.mTimeStamp);
+
+        if (event.mEventType == Event.CONFIGURATION_CHANGE) {
+            event.mConfiguration.writeToParcel(p, flags);
+        }
+    }
+
+    /**
+     * Reads a single event from the parcel. Modify this when updating {@link Event}.
+     */
+    private void readEventFromParcel(Parcel p, Event eventOut) {
+        final int packageIndex = p.readInt();
+        if (packageIndex >= 0) {
+            eventOut.mPackage = mStringPool[packageIndex];
+        } else {
+            eventOut.mPackage = null;
+        }
+
+        final int classIndex = p.readInt();
+        if (classIndex >= 0) {
+            eventOut.mClass = mStringPool[classIndex];
+        } else {
+            eventOut.mClass = null;
+        }
+        eventOut.mEventType = p.readInt();
+        eventOut.mTimeStamp = p.readLong();
+
+        // Extract the configuration for configuration change events.
+        if (eventOut.mEventType == Event.CONFIGURATION_CHANGE) {
+            eventOut.mConfiguration = Configuration.CREATOR.createFromParcel(p);
+        } else {
+            eventOut.mConfiguration = null;
+        }
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
     @Override
     public void writeToParcel(Parcel dest, int flags) {
         dest.writeInt(mEventCount);
@@ -262,25 +323,9 @@
                     p.setDataPosition(0);
                     for (int i = 0; i < mEventCount; i++) {
                         final Event event = mEventsToWrite.get(i);
-
-                        final int packageIndex;
-                        if (event.mPackage != null) {
-                            packageIndex = findStringIndex(event.mPackage);
-                        } else {
-                            packageIndex = -1;
-                        }
-
-                        final int classIndex;
-                        if (event.mClass != null) {
-                            classIndex = findStringIndex(event.mClass);
-                        } else {
-                            classIndex = -1;
-                        }
-                        p.writeInt(packageIndex);
-                        p.writeInt(classIndex);
-                        p.writeInt(event.getEventType());
-                        p.writeLong(event.getTimeStamp());
+                        writeEventToParcel(event, p, flags);
                     }
+
                     final int listByteLength = p.dataPosition();
 
                     // Write the total length of the data.
diff --git a/core/java/android/app/usage/UsageStatsManager.java b/core/java/android/app/usage/UsageStatsManager.java
index 5830fcf..bc6099a 100644
--- a/core/java/android/app/usage/UsageStatsManager.java
+++ b/core/java/android/app/usage/UsageStatsManager.java
@@ -125,9 +125,9 @@
      * @see #INTERVAL_YEARLY
      * @see #INTERVAL_BEST
      */
-    @SuppressWarnings("unchecked")
     public List<UsageStats> queryUsageStats(int intervalType, long beginTime, long endTime) {
         try {
+            @SuppressWarnings("unchecked")
             ParceledListSlice<UsageStats> slice = mService.queryUsageStats(intervalType, beginTime,
                     endTime, mContext.getOpPackageName());
             if (slice != null) {
@@ -136,7 +136,32 @@
         } catch (RemoteException e) {
             // fallthrough and return null.
         }
-        return Collections.EMPTY_LIST;
+        return Collections.emptyList();
+    }
+
+    /**
+     * Gets the hardware configurations the device was in for the given time range, aggregated by
+     * the specified interval. The results are ordered as in
+     * {@link #queryUsageStats(int, long, long)}.
+     *
+     * @param intervalType The time interval by which the stats are aggregated.
+     * @param beginTime The inclusive beginning of the range of stats to include in the results.
+     * @param endTime The exclusive end of the range of stats to include in the results.
+     * @return A list of {@link ConfigurationStats} or null if none are available.
+     */
+    public List<ConfigurationStats> queryConfigurations(int intervalType, long beginTime,
+            long endTime) {
+        try {
+            @SuppressWarnings("unchecked")
+            ParceledListSlice<ConfigurationStats> slice = mService.queryConfigurationStats(
+                    intervalType, beginTime, endTime, mContext.getOpPackageName());
+            if (slice != null) {
+                return slice.getList();
+            }
+        } catch (RemoteException e) {
+            // fallthrough and return the empty list.
+        }
+        return Collections.emptyList();
     }
 
     /**
diff --git a/core/java/android/app/usage/UsageStatsManagerInternal.java b/core/java/android/app/usage/UsageStatsManagerInternal.java
index 119d705..083a48a 100644
--- a/core/java/android/app/usage/UsageStatsManagerInternal.java
+++ b/core/java/android/app/usage/UsageStatsManagerInternal.java
@@ -17,6 +17,7 @@
 package android.app.usage;
 
 import android.content.ComponentName;
+import android.content.res.Configuration;
 
 /**
  * UsageStatsManager local system service interface.
@@ -28,14 +29,19 @@
     /**
      * Reports an event to the UsageStatsManager.
      *
-     * @param component The component for which this event ocurred.
+     * @param component The component for which this event occurred.
      * @param userId The user id to which the component belongs to.
-     * @param timeStamp The time at which this event ocurred.
-     * @param eventType The event that occured. Valid values can be found at
+     * @param eventType The event that occurred. Valid values can be found at
      * {@link UsageEvents}
      */
-    public abstract void reportEvent(ComponentName component, int userId,
-            long timeStamp, int eventType);
+    public abstract void reportEvent(ComponentName component, int userId, int eventType);
+
+    /**
+     * Reports a configuration change to the UsageStatsManager.
+     *
+     * @param config The new device configuration.
+     */
+    public abstract void reportConfigurationChange(Configuration config, int userId);
 
     /**
      * Prepares the UsageStatsService for shutdown.
diff --git a/core/java/android/content/res/Configuration.java b/core/java/android/content/res/Configuration.java
index e63fd07..27bbb24 100644
--- a/core/java/android/content/res/Configuration.java
+++ b/core/java/android/content/res/Configuration.java
@@ -16,6 +16,12 @@
 
 package android.content.res;
 
+import com.android.internal.util.XmlUtils;
+
+import org.xmlpull.v1.XmlPullParser;
+import org.xmlpull.v1.XmlPullParserException;
+import org.xmlpull.v1.XmlSerializer;
+
 import android.content.pm.ActivityInfo;
 import android.os.Build;
 import android.os.Parcel;
@@ -23,7 +29,7 @@
 import android.text.TextUtils;
 import android.view.View;
 
-import java.text.Format;
+import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Locale;
 
@@ -1353,8 +1359,6 @@
      * Returns a string representation of the configuration that can be parsed
      * by build tools (like AAPT).
      *
-     *
-     *
      * @hide
      */
     public static String resourceQualifierString(Configuration config) {
@@ -1568,4 +1572,229 @@
         parts.add("v" + Build.VERSION.RESOURCES_SDK_INT);
         return TextUtils.join("-", parts);
     }
+
+    /**
+     * Generate a delta Configuration between <code>base</code> and <code>change</code>. The
+     * resulting delta can be used with {@link #updateFrom(Configuration)}.
+     * <p />
+     * Caveat: If the any of the Configuration's members becomes undefined, then
+     * {@link #updateFrom(Configuration)} will treat it as a no-op and not update that member.
+     *
+     * This is fine for device configurations as no member is ever undefined.
+     * {@hide}
+     */
+    public static Configuration generateDelta(Configuration base, Configuration change) {
+        final Configuration delta = new Configuration();
+        if (base.fontScale != change.fontScale) {
+            delta.fontScale = change.fontScale;
+        }
+
+        if (base.mcc != change.mcc) {
+            delta.mcc = change.mcc;
+        }
+
+        if (base.mnc != change.mnc) {
+            delta.mnc = change.mnc;
+        }
+
+        if ((base.locale == null && change.locale != null) ||
+                (base.locale != null && !base.locale.equals(change.locale)))  {
+            delta.locale = change.locale;
+        }
+
+        if (base.touchscreen != change.touchscreen) {
+            delta.touchscreen = change.touchscreen;
+        }
+
+        if (base.keyboard != change.keyboard) {
+            delta.keyboard = change.keyboard;
+        }
+
+        if (base.keyboardHidden != change.keyboardHidden) {
+            delta.keyboardHidden = change.keyboardHidden;
+        }
+
+        if (base.navigation != change.navigation) {
+            delta.navigation = change.navigation;
+        }
+
+        if (base.navigationHidden != change.navigationHidden) {
+            delta.navigationHidden = change.navigationHidden;
+        }
+
+        if (base.orientation != change.orientation) {
+            delta.orientation = change.orientation;
+        }
+
+        if ((base.screenLayout & SCREENLAYOUT_SIZE_MASK) !=
+                (change.screenLayout & SCREENLAYOUT_SIZE_MASK)) {
+            delta.screenLayout |= change.screenLayout & SCREENLAYOUT_SIZE_MASK;
+        }
+
+        if ((base.screenLayout & SCREENLAYOUT_LAYOUTDIR_MASK) !=
+                (change.screenLayout & SCREENLAYOUT_LAYOUTDIR_MASK)) {
+            delta.screenLayout |= change.screenLayout & SCREENLAYOUT_LAYOUTDIR_MASK;
+        }
+
+        if ((base.screenLayout & SCREENLAYOUT_LONG_MASK) !=
+                (change.screenLayout & SCREENLAYOUT_LONG_MASK)) {
+            delta.screenLayout |= change.screenLayout & SCREENLAYOUT_LONG_MASK;
+        }
+
+        if ((base.uiMode & UI_MODE_TYPE_MASK) != (change.uiMode & UI_MODE_TYPE_MASK)) {
+            delta.uiMode |= change.uiMode & UI_MODE_TYPE_MASK;
+        }
+
+        if ((base.uiMode & UI_MODE_NIGHT_MASK) != (change.uiMode & UI_MODE_NIGHT_MASK)) {
+            delta.uiMode |= change.uiMode & UI_MODE_NIGHT_MASK;
+        }
+
+        if (base.screenWidthDp != change.screenWidthDp) {
+            delta.screenWidthDp = change.screenWidthDp;
+        }
+
+        if (base.screenHeightDp != change.screenHeightDp) {
+            delta.screenHeightDp = change.screenHeightDp;
+        }
+
+        if (base.smallestScreenWidthDp != change.smallestScreenWidthDp) {
+            delta.smallestScreenWidthDp = change.smallestScreenWidthDp;
+        }
+
+        if (base.densityDpi != change.densityDpi) {
+            delta.densityDpi = change.densityDpi;
+        }
+        return delta;
+    }
+
+    private static final String XML_ATTR_FONT_SCALE = "fs";
+    private static final String XML_ATTR_MCC = "mcc";
+    private static final String XML_ATTR_MNC = "mnc";
+    private static final String XML_ATTR_LOCALE = "locale";
+    private static final String XML_ATTR_TOUCHSCREEN = "touch";
+    private static final String XML_ATTR_KEYBOARD = "key";
+    private static final String XML_ATTR_KEYBOARD_HIDDEN = "keyHid";
+    private static final String XML_ATTR_HARD_KEYBOARD_HIDDEN = "hardKeyHid";
+    private static final String XML_ATTR_NAVIGATION = "nav";
+    private static final String XML_ATTR_NAVIGATION_HIDDEN = "navHid";
+    private static final String XML_ATTR_ORIENTATION = "ori";
+    private static final String XML_ATTR_SCREEN_LAYOUT = "scrLay";
+    private static final String XML_ATTR_UI_MODE = "ui";
+    private static final String XML_ATTR_SCREEN_WIDTH = "width";
+    private static final String XML_ATTR_SCREEN_HEIGHT = "height";
+    private static final String XML_ATTR_SMALLEST_WIDTH = "sw";
+    private static final String XML_ATTR_DENSITY = "density";
+
+    /**
+     * Reads the attributes corresponding to Configuration member fields from the Xml parser.
+     * The parser is expected to be on a tag which has Configuration attributes.
+     *
+     * @param parser The Xml parser from which to read attributes.
+     * @param configOut The Configuration to populate from the Xml attributes.
+     * {@hide}
+     */
+    public static void readXmlAttrs(XmlPullParser parser, Configuration configOut)
+            throws XmlPullParserException, IOException {
+        configOut.fontScale = Float.intBitsToFloat(
+                XmlUtils.readIntAttribute(parser, XML_ATTR_FONT_SCALE, 0));
+        configOut.mcc = XmlUtils.readIntAttribute(parser, XML_ATTR_MCC, 0);
+        configOut.mnc = XmlUtils.readIntAttribute(parser, XML_ATTR_MNC, 0);
+
+        final String localeStr = XmlUtils.readStringAttribute(parser, XML_ATTR_LOCALE);
+        if (localeStr != null) {
+            configOut.locale = Locale.forLanguageTag(localeStr);
+        }
+
+        configOut.touchscreen = XmlUtils.readIntAttribute(parser, XML_ATTR_TOUCHSCREEN,
+                TOUCHSCREEN_UNDEFINED);
+        configOut.keyboard = XmlUtils.readIntAttribute(parser, XML_ATTR_KEYBOARD,
+                KEYBOARD_UNDEFINED);
+        configOut.keyboardHidden = XmlUtils.readIntAttribute(parser, XML_ATTR_KEYBOARD_HIDDEN,
+                KEYBOARDHIDDEN_UNDEFINED);
+        configOut.hardKeyboardHidden =
+                XmlUtils.readIntAttribute(parser, XML_ATTR_HARD_KEYBOARD_HIDDEN,
+                        HARDKEYBOARDHIDDEN_UNDEFINED);
+        configOut.navigation = XmlUtils.readIntAttribute(parser, XML_ATTR_NAVIGATION,
+                NAVIGATION_UNDEFINED);
+        configOut.navigationHidden = XmlUtils.readIntAttribute(parser, XML_ATTR_NAVIGATION_HIDDEN,
+                NAVIGATIONHIDDEN_UNDEFINED);
+        configOut.orientation = XmlUtils.readIntAttribute(parser, XML_ATTR_ORIENTATION,
+                ORIENTATION_UNDEFINED);
+        configOut.screenLayout = XmlUtils.readIntAttribute(parser, XML_ATTR_SCREEN_LAYOUT,
+                SCREENLAYOUT_UNDEFINED);
+        configOut.uiMode = XmlUtils.readIntAttribute(parser, XML_ATTR_UI_MODE, 0);
+        configOut.screenWidthDp = XmlUtils.readIntAttribute(parser, XML_ATTR_SCREEN_WIDTH,
+                SCREEN_WIDTH_DP_UNDEFINED);
+        configOut.screenHeightDp = XmlUtils.readIntAttribute(parser, XML_ATTR_SCREEN_HEIGHT,
+                SCREEN_HEIGHT_DP_UNDEFINED);
+        configOut.smallestScreenWidthDp =
+                XmlUtils.readIntAttribute(parser, XML_ATTR_SMALLEST_WIDTH,
+                        SMALLEST_SCREEN_WIDTH_DP_UNDEFINED);
+        configOut.densityDpi = XmlUtils.readIntAttribute(parser, XML_ATTR_DENSITY,
+                DENSITY_DPI_UNDEFINED);
+    }
+
+
+    /**
+     * Writes the Configuration's member fields as attributes into the XmlSerializer.
+     * The serializer is expected to have already started a tag so that attributes can be
+     * immediately written.
+     *
+     * @param xml The serializer to which to write the attributes.
+     * @param config The Configuration whose member fields to write.
+     * {@hide}
+     */
+    public static void writeXmlAttrs(XmlSerializer xml, Configuration config) throws IOException {
+        XmlUtils.writeIntAttribute(xml, XML_ATTR_FONT_SCALE,
+                Float.floatToIntBits(config.fontScale));
+        if (config.mcc != 0) {
+            XmlUtils.writeIntAttribute(xml, XML_ATTR_MCC, config.mcc);
+        }
+        if (config.mnc != 0) {
+            XmlUtils.writeIntAttribute(xml, XML_ATTR_MNC, config.mnc);
+        }
+        if (config.locale != null) {
+            XmlUtils.writeStringAttribute(xml, XML_ATTR_LOCALE, config.locale.toLanguageTag());
+        }
+        if (config.touchscreen != TOUCHSCREEN_UNDEFINED) {
+            XmlUtils.writeIntAttribute(xml, XML_ATTR_TOUCHSCREEN, config.touchscreen);
+        }
+        if (config.keyboard != KEYBOARD_UNDEFINED) {
+            XmlUtils.writeIntAttribute(xml, XML_ATTR_KEYBOARD, config.keyboard);
+        }
+        if (config.keyboardHidden != KEYBOARDHIDDEN_UNDEFINED) {
+            XmlUtils.writeIntAttribute(xml, XML_ATTR_KEYBOARD_HIDDEN, config.keyboardHidden);
+        }
+        if (config.hardKeyboardHidden != HARDKEYBOARDHIDDEN_UNDEFINED) {
+            XmlUtils.writeIntAttribute(xml, XML_ATTR_HARD_KEYBOARD_HIDDEN,
+                    config.hardKeyboardHidden);
+        }
+        if (config.navigation != NAVIGATION_UNDEFINED) {
+            XmlUtils.writeIntAttribute(xml, XML_ATTR_NAVIGATION, config.navigation);
+        }
+        if (config.navigationHidden != NAVIGATIONHIDDEN_UNDEFINED) {
+            XmlUtils.writeIntAttribute(xml, XML_ATTR_NAVIGATION_HIDDEN, config.navigationHidden);
+        }
+        if (config.orientation != ORIENTATION_UNDEFINED) {
+            XmlUtils.writeIntAttribute(xml, XML_ATTR_ORIENTATION, config.orientation);
+        }
+        if (config.screenLayout != SCREENLAYOUT_UNDEFINED) {
+            XmlUtils.writeIntAttribute(xml, XML_ATTR_SCREEN_LAYOUT, config.screenLayout);
+        }
+        if (config.uiMode != 0) {
+            XmlUtils.writeIntAttribute(xml, XML_ATTR_UI_MODE, config.uiMode);
+        }
+        if (config.screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED) {
+            XmlUtils.writeIntAttribute(xml, XML_ATTR_SCREEN_WIDTH, config.screenWidthDp);
+        }
+        if (config.screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED) {
+            XmlUtils.writeIntAttribute(xml, XML_ATTR_SCREEN_HEIGHT, config.screenHeightDp);
+        }
+        if (config.smallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED) {
+            XmlUtils.writeIntAttribute(xml, XML_ATTR_SMALLEST_WIDTH, config.smallestScreenWidthDp);
+        }
+        if (config.densityDpi != DENSITY_DPI_UNDEFINED) {
+            XmlUtils.writeIntAttribute(xml, XML_ATTR_DENSITY, config.densityDpi);
+        }
+    }
 }
diff --git a/core/java/android/net/NetworkRequest.java b/core/java/android/net/NetworkRequest.java
index 83bdfaa..5a09b46 100644
--- a/core/java/android/net/NetworkRequest.java
+++ b/core/java/android/net/NetworkRequest.java
@@ -52,6 +52,9 @@
      * @hide
      */
     public NetworkRequest(NetworkCapabilities nc, int legacyType, int rId) {
+        if (nc == null) {
+            throw new NullPointerException();
+        }
         requestId = rId;
         networkCapabilities = nc;
         this.legacyType = legacyType;
diff --git a/core/java/android/text/Layout.java b/core/java/android/text/Layout.java
index 7dce348..2b53c48 100644
--- a/core/java/android/text/Layout.java
+++ b/core/java/android/text/Layout.java
@@ -727,10 +727,9 @@
         int[] runs = dirs.mDirections;
         int lineStart = getLineStart(line);
         for (int i = 0; i < runs.length; i += 2) {
-            int start = lineStart + (runs[i] & RUN_LENGTH_MASK);
-            // No need to test the end as an offset after the last run should return the value
-            // corresponding of the last run
-            if (offset >= start) {
+            int start = lineStart + runs[i];
+            int limit = start + (runs[i+1] & RUN_LENGTH_MASK);
+            if (offset >= start && offset < limit) {
                 int level = (runs[i+1] >>> RUN_LEVEL_SHIFT) & RUN_LEVEL_MASK;
                 return ((level & 1) != 0);
             }
diff --git a/core/java/android/view/View.java b/core/java/android/view/View.java
index 21e7c6b..92ad4e8 100644
--- a/core/java/android/view/View.java
+++ b/core/java/android/view/View.java
@@ -444,16 +444,19 @@
  * <a name="Drawing"></a>
  * <h3>Drawing</h3>
  * <p>
- * Drawing is handled by walking the tree and rendering each view that
- * intersects the invalid region. Because the tree is traversed in-order,
- * this means that parents will draw before (i.e., behind) their children, with
- * siblings drawn in the order they appear in the tree.
- * If you set a background drawable for a View, then the View will draw it for you
- * before calling back to its <code>onDraw()</code> method.
+ * Drawing is handled by walking the tree and recording the drawing commands of
+ * any View that needs to update. After this, the drawing commands of the
+ * entire tree are issued to screen, clipped to the newly damaged area.
  * </p>
  *
  * <p>
- * Note that the framework will not draw views that are not in the invalid region.
+ * The tree is largely recorded and drawn in order, with parents drawn before
+ * (i.e., behind) their children, with siblings drawn in the order they appear
+ * in the tree. If you set a background drawable for a View, then the View will
+ * draw it before calling back to its <code>onDraw()</code> method. The child
+ * drawing order can be overridden with
+ * {@link ViewGroup#setChildrenDrawingOrderEnabled(boolean) custom child drawing order}
+ * in a ViewGroup, and with {@link #setZ(float)} custom Z values} set on Views.
  * </p>
  *
  * <p>
@@ -10825,6 +10828,12 @@
     /**
      * Sets whether the View's Outline should be used to clip the contents of the View.
      * <p>
+     * Only a single non-rectangular clip can be applied on a View at any time.
+     * Circular clips from a {@link ViewAnimationUtils#createCircularReveal(View, int, int, float, float)
+     * circular reveal} animation take priority over Outline clipping, and
+     * child Outline clipping takes priority over Outline clipping done by a
+     * parent.
+     * <p>
      * Note that this flag will only be respected if the View's Outline returns true from
      * {@link Outline#canClip()}.
      *
@@ -15091,10 +15100,12 @@
             bounds.set(0, 0, mRight - mLeft, mBottom - mTop);
         }
 
+        canvas.save();
         canvas.translate(mScrollX, mScrollY);
+        canvas.clipRect(bounds, Region.Op.REPLACE);
         drawable.setBounds(bounds);
         drawable.draw(canvas);
-        canvas.translate(-mScrollX, -mScrollY);
+        canvas.restore();
     }
 
     /**
diff --git a/core/java/android/view/ViewAnimationUtils.java b/core/java/android/view/ViewAnimationUtils.java
index 7ced088..001cd01 100644
--- a/core/java/android/view/ViewAnimationUtils.java
+++ b/core/java/android/view/ViewAnimationUtils.java
@@ -27,9 +27,13 @@
     private ViewAnimationUtils() {}
     /**
      * Returns an Animator which can animate a clipping circle.
-     *
+     * <p>
      * Any shadow cast by the View will respect the circular clip from this animator.
-     *
+     * <p>
+     * Only a single non-rectangular clip can be applied on a View at any time.
+     * Views clipped by a circular reveal animation take priority over
+     * {@link View#setClipToOutline(boolean) View Outline clipping}.
+     * <p>
      * Note that the animation returned here is a one-shot animation. It cannot
      * be re-used, and once started it cannot be paused or resumed.
      *
@@ -39,7 +43,7 @@
      * @param startRadius The starting radius of the animating circle.
      * @param endRadius The ending radius of the animating circle.
      */
-    public static final Animator createCircularReveal(View view,
+    public static Animator createCircularReveal(View view,
             int centerX,  int centerY, float startRadius, float endRadius) {
         return new RevealAnimator(view, centerX, centerY, startRadius, endRadius);
     }
diff --git a/core/java/android/view/ViewGroup.java b/core/java/android/view/ViewGroup.java
index adad082..974fe4e 100644
--- a/core/java/android/view/ViewGroup.java
+++ b/core/java/android/view/ViewGroup.java
@@ -5034,6 +5034,9 @@
     /**
      * Tells the ViewGroup whether to draw its children in the order defined by the method
      * {@link #getChildDrawingOrder(int, int)}.
+     * <p>
+     * Note that {@link View#getZ() Z} reordering, done by {@link #dispatchDraw(Canvas)},
+     * will override custom child ordering done via this method.
      *
      * @param enabled true if the order of the children when drawing is determined by
      *        {@link #getChildDrawingOrder(int, int)}, false otherwise
diff --git a/core/java/android/widget/DatePicker.java b/core/java/android/widget/DatePicker.java
index 26c1f96..2729bd0 100644
--- a/core/java/android/widget/DatePicker.java
+++ b/core/java/android/widget/DatePicker.java
@@ -71,9 +71,9 @@
  * @attr ref android.R.styleable#DatePicker_minDate
  * @attr ref android.R.styleable#DatePicker_spinnersShown
  * @attr ref android.R.styleable#DatePicker_calendarViewShown
- * @attr ref android.R.styleable#DatePicker_dayOfWeekBackgroundColor
+ * @attr ref android.R.styleable#DatePicker_dayOfWeekBackground
  * @attr ref android.R.styleable#DatePicker_dayOfWeekTextAppearance
- * @attr ref android.R.styleable#DatePicker_headerBackgroundColor
+ * @attr ref android.R.styleable#DatePicker_headerBackground
  * @attr ref android.R.styleable#DatePicker_headerMonthTextAppearance
  * @attr ref android.R.styleable#DatePicker_headerDayOfMonthTextAppearance
  * @attr ref android.R.styleable#DatePicker_headerYearTextAppearance
diff --git a/core/java/android/widget/DatePickerCalendarDelegate.java b/core/java/android/widget/DatePickerCalendarDelegate.java
index 7df1fa3..eed49bf 100644
--- a/core/java/android/widget/DatePickerCalendarDelegate.java
+++ b/core/java/android/widget/DatePickerCalendarDelegate.java
@@ -21,7 +21,7 @@
 import android.content.res.Configuration;
 import android.content.res.Resources;
 import android.content.res.TypedArray;
-import android.graphics.Color;
+import android.graphics.drawable.Drawable;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.text.format.DateFormat;
@@ -149,16 +149,12 @@
             mDayOfWeekView.setTextAppearance(context, dayOfWeekTextAppearanceResId);
         }
 
-        final int dayOfWeekBackgroundColor = a.getColor(
-                R.styleable.DatePicker_dayOfWeekBackgroundColor, Color.TRANSPARENT);
-        mDayOfWeekView.setBackgroundColor(dayOfWeekBackgroundColor);
+        mDayOfWeekView.setBackground(a.getDrawable(R.styleable.DatePicker_dayOfWeekBackground));
+
+        dateLayout.setBackground(a.getDrawable(R.styleable.DatePicker_headerBackground));
 
         final int headerSelectedTextColor = a.getColor(
                 R.styleable.DatePicker_headerSelectedTextColor, defaultHighlightColor);
-        final int headerBackgroundColor = a.getColor(R.styleable.DatePicker_headerBackgroundColor,
-                Color.TRANSPARENT);
-        dateLayout.setBackgroundColor(headerBackgroundColor);
-
         final int monthTextAppearanceResId = a.getResourceId(
                 R.styleable.DatePicker_headerMonthTextAppearance, -1);
         if (monthTextAppearanceResId != -1) {
diff --git a/core/java/android/widget/RadialTimePickerView.java b/core/java/android/widget/RadialTimePickerView.java
index adca4cc..d2f68d0 100644
--- a/core/java/android/widget/RadialTimePickerView.java
+++ b/core/java/android/widget/RadialTimePickerView.java
@@ -458,6 +458,7 @@
         a.recycle();
 
         setOnTouchListener(this);
+        setClickable(true);
 
         // Initial values
         final Calendar calendar = Calendar.getInstance(Locale.getDefault());
@@ -612,9 +613,9 @@
             mMinutesTexts[i] = String.format("%02d", MINUTES_NUMBERS[i]);
         }
 
-        String[] amPmTexts = new DateFormatSymbols().getAmPmStrings();
-        mAmPmText[AM] = amPmTexts[0];
-        mAmPmText[PM] = amPmTexts[1];
+        String[] amPmStrings = TimePickerClockDelegate.getAmPmStrings(mContext);
+        mAmPmText[AM] = amPmStrings[0];
+        mAmPmText[PM] = amPmStrings[1];
     }
 
     private void initData() {
diff --git a/core/java/android/widget/TimePickerSpinnerDelegate.java b/core/java/android/widget/TimePickerSpinnerDelegate.java
index 6169d2e..73e05e8 100644
--- a/core/java/android/widget/TimePickerSpinnerDelegate.java
+++ b/core/java/android/widget/TimePickerSpinnerDelegate.java
@@ -21,7 +21,6 @@
 import android.content.res.Configuration;
 import android.content.res.Resources;
 import android.content.res.TypedArray;
-import android.graphics.Color;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.text.TextUtils;
@@ -40,7 +39,6 @@
 
 import com.android.internal.R;
 
-import java.text.DateFormatSymbols;
 import java.util.ArrayList;
 import java.util.Calendar;
 import java.util.Locale;
@@ -71,6 +69,7 @@
 
     private static final int HOURS_IN_HALF_DAY = 12;
 
+    private View mHeaderView;
     private TextView mHourView;
     private TextView mMinuteView;
     private TextView mAmPmTextView;
@@ -156,11 +155,8 @@
             mAmPmTextView.setTextAppearance(context, headerAmPmTextAppearance);
         }
 
-        final int headerBackgroundColor = a.getColor(
-                R.styleable.TimePicker_headerBackgroundColor, Color.TRANSPARENT);
-        if (headerBackgroundColor != Color.TRANSPARENT) {
-            mainView.findViewById(R.id.time_header).setBackgroundColor(headerBackgroundColor);
-        }
+        mHeaderView = mainView.findViewById(R.id.time_header);
+        mHeaderView.setBackground(a.getDrawable(R.styleable.TimePicker_headerBackground));
 
         a.recycle();
 
@@ -194,14 +190,11 @@
     }
 
     private void setupListeners() {
-        KeyboardListener keyboardListener = new KeyboardListener();
-        mDelegator.setOnKeyListener(keyboardListener);
+        mHeaderView.setOnKeyListener(mKeyListener);
+        mHeaderView.setOnFocusChangeListener(mFocusListener);
+        mHeaderView.setFocusable(true);
 
-        mHourView.setOnKeyListener(keyboardListener);
-        mMinuteView.setOnKeyListener(keyboardListener);
-        mAmPmTextView.setOnKeyListener(keyboardListener);
         mRadialTimePickerView.setOnValueSelectedListener(this);
-        mRadialTimePickerView.setOnKeyListener(keyboardListener);
 
         mHourView.setOnClickListener(new View.OnClickListener() {
             @Override
@@ -641,7 +634,7 @@
             if (!isTypedTimeFullyLegal()) {
                 mTypedTimes.clear();
             }
-            finishKbMode(true);
+            finishKbMode();
         }
     }
 
@@ -776,27 +769,7 @@
      * @return true if the key was successfully processed, false otherwise.
      */
     private boolean processKeyUp(int keyCode) {
-        if (keyCode == KeyEvent.KEYCODE_ESCAPE || keyCode == KeyEvent.KEYCODE_TAB) {
-            if(mInKbMode) {
-                if (isTypedTimeFullyLegal()) {
-                    finishKbMode(true);
-                }
-                return true;
-            }
-        } else if (keyCode == KeyEvent.KEYCODE_ENTER) {
-            if (mInKbMode) {
-                if (!isTypedTimeFullyLegal()) {
-                    return true;
-                }
-                finishKbMode(false);
-            }
-            if (mOnTimeChangedListener != null) {
-                mOnTimeChangedListener.onTimeChanged(mDelegator,
-                        mRadialTimePickerView.getCurrentHour(),
-                        mRadialTimePickerView.getCurrentMinute());
-            }
-            return true;
-        } else if (keyCode == KeyEvent.KEYCODE_DEL) {
+        if (keyCode == KeyEvent.KEYCODE_DEL) {
             if (mInKbMode) {
                 if (!mTypedTimes.isEmpty()) {
                     int deleted = deleteLastTypedKey();
@@ -925,9 +898,8 @@
 
     /**
      * Get out of keyboard mode. If there is nothing in typedTimes, revert to TimePicker's time.
-     * @param updateDisplays If true, update the displays with the relevant time.
      */
-    private void finishKbMode(boolean updateDisplays) {
+    private void finishKbMode() {
         mInKbMode = false;
         if (!mTypedTimes.isEmpty()) {
             int values[] = getEnteredTime(null);
@@ -938,10 +910,8 @@
             }
             mTypedTimes.clear();
         }
-        if (updateDisplays) {
-            updateDisplay(false);
-            mRadialTimePickerView.setInputEnabled(true);
-        }
+        updateDisplay(false);
+        mRadialTimePickerView.setInputEnabled(true);
     }
 
     /**
@@ -1261,7 +1231,7 @@
         }
     }
 
-    private class KeyboardListener implements View.OnKeyListener {
+    private final View.OnKeyListener mKeyListener = new View.OnKeyListener() {
         @Override
         public boolean onKey(View v, int keyCode, KeyEvent event) {
             if (event.getAction() == KeyEvent.ACTION_UP) {
@@ -1269,5 +1239,20 @@
             }
             return false;
         }
-    }
+    };
+
+    private final View.OnFocusChangeListener mFocusListener = new View.OnFocusChangeListener() {
+        @Override
+        public void onFocusChange(View v, boolean hasFocus) {
+            if (!hasFocus && mInKbMode && isTypedTimeFullyLegal()) {
+                finishKbMode();
+
+                if (mOnTimeChangedListener != null) {
+                    mOnTimeChangedListener.onTimeChanged(mDelegator,
+                            mRadialTimePickerView.getCurrentHour(),
+                            mRadialTimePickerView.getCurrentMinute());
+                }
+            }
+        }
+    };
 }
diff --git a/core/res/res/drawable/time_picker_header_material.xml b/core/res/res/drawable/time_picker_header_material.xml
new file mode 100644
index 0000000..cdb92b6
--- /dev/null
+++ b/core/res/res/drawable/time_picker_header_material.xml
@@ -0,0 +1,22 @@
+<?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.
+-->
+
+<ripple xmlns:android="http://schemas.android.com/apk/res/android"
+    android:color="?attr/colorControlHighlight">
+    <item>
+        <color android:color="?attr/colorAccent" />
+    </item>
+</ripple>
diff --git a/core/res/res/layout-land/time_picker_holo.xml b/core/res/res/layout-land/time_picker_holo.xml
index f316f1b..ce90a5b 100644
--- a/core/res/res/layout-land/time_picker_holo.xml
+++ b/core/res/res/layout-land/time_picker_holo.xml
@@ -21,7 +21,6 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="horizontal"
-    android:focusable="true"
     android:layout_marginLeft="@dimen/timepicker_minimum_margin_sides"
     android:layout_marginRight="@dimen/timepicker_minimum_margin_sides"
     android:layout_marginTop="@dimen/timepicker_minimum_margin_top_bottom"
@@ -42,7 +41,5 @@
         android:id="@+id/radial_picker"
         android:layout_width="@dimen/timepicker_radial_picker_dimen"
         android:layout_height="match_parent"
-        android:layout_gravity="center"
-        android:focusable="true"
-        android:focusableInTouchMode="true" />
+        android:layout_gravity="center" />
 </LinearLayout>
diff --git a/core/res/res/layout/time_picker_holo.xml b/core/res/res/layout/time_picker_holo.xml
index 483eb6d..08d2211 100644
--- a/core/res/res/layout/time_picker_holo.xml
+++ b/core/res/res/layout/time_picker_holo.xml
@@ -18,20 +18,17 @@
 -->
 
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-          android:layout_width="wrap_content"
-          android:layout_height="match_parent"
-          android:orientation="vertical"
-          android:focusable="true" >
+    android:layout_width="wrap_content"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
     <include
-            layout="@layout/time_header_label"
-            android:layout_width="match_parent"
-            android:layout_height="@dimen/timepicker_header_height"
-            android:layout_gravity="center" />
+        layout="@layout/time_header_label"
+        android:layout_width="match_parent"
+        android:layout_height="@dimen/timepicker_header_height"
+        android:layout_gravity="center" />
     <android.widget.RadialTimePickerView
-            android:id="@+id/radial_picker"
-            android:layout_width="wrap_content"
-            android:layout_height="@dimen/timepicker_radial_picker_dimen"
-            android:layout_gravity="center"
-            android:focusable="true"
-            android:focusableInTouchMode="true" />
+        android:id="@+id/radial_picker"
+        android:layout_width="wrap_content"
+        android:layout_height="@dimen/timepicker_radial_picker_dimen"
+        android:layout_gravity="center" />
 </LinearLayout>
diff --git a/core/res/res/values-mcc310-mnc410/config.xml b/core/res/res/values-mcc310-mnc410/config.xml
index 8069d13..edf6d9f 100644
--- a/core/res/res/values-mcc310-mnc410/config.xml
+++ b/core/res/res/values-mcc310-mnc410/config.xml
@@ -46,4 +46,9 @@
         <item>GPS_LOCK=1</item>
         <item>LPP_PROFILE=3</item>
     </string-array>
+    <!-- Do not translate. Defines the slots is Two Digit Number for dialing normally not USSD -->
+    <string-array name="config_twoDigitNumberPattern">
+        <item>"0"</item>
+        <item>"00"</item>
+    </string-array>
 </resources>
diff --git a/core/res/res/values/attrs.xml b/core/res/res/values/attrs.xml
index 4622995..603fcde 100644
--- a/core/res/res/values/attrs.xml
+++ b/core/res/res/values/attrs.xml
@@ -4346,7 +4346,7 @@
         <!-- @hide The layout of the legacy DatePicker. -->
         <attr name="legacyLayout" />
         <!-- The background color for the date selector 's day of week. -->
-        <attr name="dayOfWeekBackgroundColor" format="color" />
+        <attr name="dayOfWeekBackground" format="color|reference" />
         <!-- The text color for the date selector's day of week. -->
         <attr name="dayOfWeekTextAppearance" format="reference" />
         <!-- The month's text appearance in the date selector. -->
@@ -4355,8 +4355,8 @@
         <attr name="headerDayOfMonthTextAppearance" format="reference" />
         <!-- The year's text appearance in the date selector. -->
         <attr name="headerYearTextAppearance" format="reference" />
-        <!-- The background color for the date selector. -->
-        <attr name="headerBackgroundColor" />
+        <!-- The background for the date selector. -->
+        <attr name="headerBackground" />
         <!-- @hide The selected text color for the date selector. Used as a
              backup if the text appearance does not explicitly have a color
              set for the selected state. -->
@@ -4653,29 +4653,29 @@
         <attr name="legacyLayout" format="reference" />
         <!-- @hide The layout of the time picker. -->
         <attr name="internalLayout" />
-        <!-- The text appearance for the AM/PM header of the TimePicker. -->
+        <!-- The text appearance for the AM/PM header. -->
         <attr name="headerAmPmTextAppearance" format="reference" />
-        <!-- The text appearance for the time header of the TimePicker. -->
+        <!-- The text appearance for the time header. -->
         <attr name="headerTimeTextAppearance" format="reference" />
         <!-- @hide The text color for selected time header of the TimePicker.
              This will override the value from the text appearance if it does
              not explicitly have a color set for the selected state. -->
         <attr name="headerSelectedTextColor" format="color" />
-        <!-- The background color for the header of the TimePicker. -->
-        <attr name="headerBackgroundColor" format="color" />
-        <!-- The color for the hours/minutes numbers of the TimePicker. -->
+        <!-- The background for the header containing the currently selected time. -->
+        <attr name="headerBackground" />
+        <!-- The color for the hours/minutes numbers. -->
         <attr name="numbersTextColor" format="color" />
-        <!-- The background color for the hours/minutes numbers of the TimePicker. -->
+        <!-- The background color for the hours/minutes numbers. -->
         <attr name="numbersBackgroundColor" format="color" />
-        <!-- The color for the AM/PM selectors of the TimePicker. -->
+        <!-- The color for the AM/PM selectors. -->
         <attr name="amPmTextColor" format="color" />
-        <!-- The background color state list for the AM/PM selectors of the TimePicker. -->
+        <!-- The background color state list for the AM/PM selectors. -->
         <attr name="amPmBackgroundColor" format="color" />
         <!-- @hide The background color for the AM/PM selectors of the
              TimePicker when selected. Used if the background color does not
              explicitly have a color set for the selected state. -->
         <attr name="amPmSelectedBackgroundColor" format="color" />
-        <!-- The color for the hours/minutes selector of the TimePicker. -->
+        <!-- The color for the hours/minutes selector. -->
         <attr name="numbersSelectorColor" format="color" />
         <!-- Defines the look of the widget. Prior to the L release, the only choice was
              spinner. As of L, with the Material theme selected, the default layout is clock,
@@ -7435,6 +7435,9 @@
     <!-- @removed -->
     <attr name="__removed1" format="reference" />
 
+    <!-- TODO: Spacer to be removed from here and public.xml -->
+    <attr name="__removed2" format="reference" />
+
     <!-- Attributes that can be used with <code>rating-system-definition</code> tags inside of the
          XML resource that describes TV content rating of a {@link android.media.tv.TvInputService},
          which is referenced from its
diff --git a/core/res/res/values/public.xml b/core/res/res/values/public.xml
index 75c0e2c..4bf4531 100644
--- a/core/res/res/values/public.xml
+++ b/core/res/res/values/public.xml
@@ -2235,7 +2235,7 @@
   <public type="attr" name="launchTaskBehindTargetAnimation" />
   <public type="attr" name="launchTaskBehindSourceAnimation" />
   <public type="attr" name="restrictionType" />
-  <public type="attr" name="dayOfWeekBackgroundColor" />
+  <public type="attr" name="dayOfWeekBackground" />
   <public type="attr" name="dayOfWeekTextAppearance" />
   <public type="attr" name="headerMonthTextAppearance" />
   <public type="attr" name="headerDayOfMonthTextAppearance" />
@@ -2248,7 +2248,7 @@
   <public type="attr" name="timePickerDialogTheme" />
   <public type="attr" name="headerTimeTextAppearance" />
   <public type="attr" name="headerAmPmTextAppearance" />
-  <public type="attr" name="headerBackgroundColor" />
+  <public type="attr" name="__removed2" />
   <public type="attr" name="numbersTextColor" />
   <public type="attr" name="numbersBackgroundColor" />
   <public type="attr" name="numbersSelectorColor" />
diff --git a/core/res/res/values/styles_holo.xml b/core/res/res/values/styles_holo.xml
index 2a54ccf..c7d2db1 100644
--- a/core/res/res/values/styles_holo.xml
+++ b/core/res/res/values/styles_holo.xml
@@ -468,7 +468,7 @@
         <item name="internalLayout">@layout/time_picker_holo</item>
         <item name="headerTimeTextAppearance">@style/TextAppearance.Holo.TimePicker.TimeLabel</item>
         <item name="headerAmPmTextAppearance">@style/TextAppearance.Holo.TimePicker.AmPmLabel</item>
-        <item name="headerBackgroundColor">@color/timepicker_default_background_holo_dark</item>
+        <item name="headerBackground">@color/timepicker_default_background_holo_dark</item>
         <item name="headerSelectedTextColor">@color/holo_blue_light</item>
         <item name="numbersTextColor">@color/timepicker_default_text_color_holo_dark</item>
         <item name="numbersBackgroundColor">@color/timepicker_default_background_holo_dark</item>
@@ -484,9 +484,9 @@
         <item name="internalLayout">@layout/date_picker_holo</item>
         <item name="calendarViewShown">true</item>
         <!-- New-style date picker attributes. -->
-        <item name="dayOfWeekBackgroundColor">@color/datepicker_default_header_dayofweek_background_color_holo_dark</item>
+        <item name="dayOfWeekBackground">@color/datepicker_default_header_dayofweek_background_color_holo_dark</item>
         <item name="dayOfWeekTextAppearance">@style/TextAppearance.Holo.DatePicker.DayOfWeekLabel</item>
-        <item name="headerBackgroundColor">@color/datepicker_default_header_selector_background_holo_dark</item>
+        <item name="headerBackground">@color/datepicker_default_header_selector_background_holo_dark</item>
         <item name="headerMonthTextAppearance">@style/TextAppearance.Holo.DatePicker.Selector.MonthLabel</item>
         <item name="headerDayOfMonthTextAppearance">@style/TextAppearance.Holo.DatePicker.Selector.DayOfMonthLabel</item>
         <item name="headerYearTextAppearance">@style/TextAppearance.Holo.DatePicker.Selector.YearLabel</item>
@@ -892,7 +892,7 @@
         <item name="internalLayout">@layout/time_picker_holo</item>
         <item name="headerTimeTextAppearance">@style/TextAppearance.Holo.Light.TimePicker.TimeLabel</item>
         <item name="headerAmPmTextAppearance">@style/TextAppearance.Holo.Light.TimePicker.AmPmLabel</item>
-        <item name="headerBackgroundColor">@color/timepicker_default_background_holo_light</item>
+        <item name="headerBackground">@color/timepicker_default_background_holo_light</item>
         <item name="headerSelectedTextColor">@color/holo_blue_light</item>
         <item name="numbersTextColor">@color/timepicker_default_text_color_holo_light</item>
         <item name="numbersBackgroundColor">@color/timepicker_default_background_holo_light</item>
@@ -908,12 +908,12 @@
         <item name="internalLayout">@layout/date_picker_holo</item>
         <item name="calendarViewShown">true</item>
         <!-- New-style date picker attributes. -->
-        <item name="dayOfWeekBackgroundColor">@color/datepicker_default_header_dayofweek_background_color_holo_light</item>
+        <item name="dayOfWeekBackground">@color/datepicker_default_header_dayofweek_background_color_holo_light</item>
         <item name="dayOfWeekTextAppearance">@style/TextAppearance.Holo.Light.DatePicker.DayOfWeekLabel</item>
         <item name="headerMonthTextAppearance">@style/TextAppearance.Holo.Light.DatePicker.Selector.MonthLabel</item>
         <item name="headerDayOfMonthTextAppearance">@style/TextAppearance.Holo.Light.DatePicker.Selector.DayOfMonthLabel</item>
         <item name="headerYearTextAppearance">@style/TextAppearance.Holo.Light.DatePicker.Selector.YearLabel</item>
-        <item name="headerBackgroundColor">@color/datepicker_default_header_selector_background_holo_light</item>
+        <item name="headerBackground">@color/datepicker_default_header_selector_background_holo_light</item>
         <item name="headerSelectedTextColor">@color/holo_blue_light</item>
         <item name="yearListItemTextAppearance">@style/TextAppearance.Holo.Light.DatePicker.List.YearLabel</item>
         <item name="yearListSelectorColor">@color/datepicker_default_circle_background_color_holo_light</item>
diff --git a/core/res/res/values/styles_material.xml b/core/res/res/values/styles_material.xml
index 77484e6..a7335af 100644
--- a/core/res/res/values/styles_material.xml
+++ b/core/res/res/values/styles_material.xml
@@ -619,7 +619,7 @@
         <item name="headerTimeTextAppearance">@style/TextAppearance.Material.TimePicker.TimeLabel</item>
         <item name="headerAmPmTextAppearance">@style/TextAppearance.Material.TimePicker.AmPmLabel</item>
         <item name="headerSelectedTextColor">?attr/textColorPrimaryInverse</item>
-        <item name="headerBackgroundColor">?attr/colorAccent</item>
+        <item name="headerBackground">@drawable/time_picker_header_material</item>
         <item name="numbersTextColor">?attr/textColorSecondary</item>
         <item name="numbersBackgroundColor">#10ffffff</item>
         <item name="amPmTextColor">?attr/textColorSecondary</item>
@@ -634,13 +634,13 @@
         <!-- Attributes for new-style DatePicker. -->
         <item name="internalLayout">@layout/date_picker_holo</item>
         <item name="calendarViewShown">true</item>
-        <item name="dayOfWeekBackgroundColor">#10000000</item>
+        <item name="dayOfWeekBackground">#10000000</item>
         <item name="dayOfWeekTextAppearance">@style/TextAppearance.Material.DatePicker.DayOfWeekLabel</item>
         <item name="headerMonthTextAppearance">@style/TextAppearance.Material.DatePicker.MonthLabel</item>
         <item name="headerDayOfMonthTextAppearance">@style/TextAppearance.Material.DatePicker.DayOfMonthLabel</item>
         <item name="headerYearTextAppearance">@style/TextAppearance.Material.DatePicker.YearLabel</item>
         <item name="headerSelectedTextColor">?attr/textColorPrimaryInverse</item>
-        <item name="headerBackgroundColor">?attr/colorAccent</item>
+        <item name="headerBackground">?attr/colorAccent</item>
         <item name="yearListItemTextAppearance">@style/TextAppearance.Material.DatePicker.List.YearLabel</item>
         <item name="yearListSelectorColor">?attr/colorControlActivated</item>
         <item name="calendarTextColor">?attr/textColorSecondary</item>
diff --git a/graphics/java/android/graphics/drawable/Ripple.java b/graphics/java/android/graphics/drawable/Ripple.java
index cd919a6..43922b8 100644
--- a/graphics/java/android/graphics/drawable/Ripple.java
+++ b/graphics/java/android/graphics/drawable/Ripple.java
@@ -419,18 +419,22 @@
     private void endSoftwareAnimations() {
         if (mAnimRadius != null) {
             mAnimRadius.end();
+            mAnimRadius = null;
         }
 
         if (mAnimOpacity != null) {
             mAnimOpacity.end();
+            mAnimOpacity = null;
         }
 
         if (mAnimX != null) {
             mAnimX.end();
+            mAnimX = null;
         }
 
         if (mAnimY != null) {
             mAnimY.end();
+            mAnimY = null;
         }
     }
 
@@ -506,18 +510,22 @@
     private void cancelSoftwareAnimations() {
         if (mAnimRadius != null) {
             mAnimRadius.cancel();
+            mAnimRadius = null;
         }
 
         if (mAnimOpacity != null) {
             mAnimOpacity.cancel();
+            mAnimOpacity = null;
         }
 
         if (mAnimX != null) {
             mAnimX.cancel();
+            mAnimX = null;
         }
 
         if (mAnimY != null) {
             mAnimY.cancel();
+            mAnimY = null;
         }
     }
 
diff --git a/graphics/java/android/graphics/drawable/RippleBackground.java b/graphics/java/android/graphics/drawable/RippleBackground.java
index 4e68a60..80ecea3 100644
--- a/graphics/java/android/graphics/drawable/RippleBackground.java
+++ b/graphics/java/android/graphics/drawable/RippleBackground.java
@@ -326,6 +326,7 @@
     private void endSoftwareAnimations() {
         if (mAnimOuterOpacity != null) {
             mAnimOuterOpacity.end();
+            mAnimOuterOpacity = null;
         }
     }
 
@@ -413,6 +414,7 @@
     private void cancelSoftwareAnimations() {
         if (mAnimOuterOpacity != null) {
             mAnimOuterOpacity.cancel();
+            mAnimOuterOpacity = null;
         }
     }
 
diff --git a/libs/hwui/RenderNode.cpp b/libs/hwui/RenderNode.cpp
index 6a92a6e..8fb1f64 100644
--- a/libs/hwui/RenderNode.cpp
+++ b/libs/hwui/RenderNode.cpp
@@ -413,7 +413,7 @@
         handler(op, PROPERTY_SAVECOUNT, properties().getClipToBounds());
     }
 
-    // TODO: support both reveal clip and outline clip simultaneously
+    // TODO: support nesting round rect clips
     if (mProperties.getRevealClip().willClip()) {
         Rect bounds;
         mProperties.getRevealClip().getBounds(&bounds);
@@ -421,7 +421,6 @@
     } else if (mProperties.getOutline().willClip()) {
         renderer.setClippingOutline(handler.allocator(), &(mProperties.getOutline()));
     }
-
 }
 
 /**
diff --git a/libs/hwui/Snapshot.cpp b/libs/hwui/Snapshot.cpp
index ecc47d2..cf8229f 100644
--- a/libs/hwui/Snapshot.cpp
+++ b/libs/hwui/Snapshot.cpp
@@ -216,14 +216,22 @@
 // Clipping round rect
 ///////////////////////////////////////////////////////////////////////////////
 
-void Snapshot::setClippingRoundRect(LinearAllocator& allocator, const Rect& bounds, float radius) {
+void Snapshot::setClippingRoundRect(LinearAllocator& allocator, const Rect& bounds,
+        float radius, bool highPriority) {
     if (bounds.isEmpty()) {
         clipRect->setEmpty();
         return;
     }
 
+    if (roundRectClipState && roundRectClipState->highPriority) {
+        // ignore, don't replace, already have a high priority clip
+        return;
+    }
+
     RoundRectClipState* state = new (allocator) RoundRectClipState;
 
+    state->highPriority = highPriority;
+
     // store the inverse drawing matrix
     Matrix4 roundRectDrawingMatrix;
     roundRectDrawingMatrix.load(getOrthoMatrix());
diff --git a/libs/hwui/Snapshot.h b/libs/hwui/Snapshot.h
index ad4ee9d..549de9b 100644
--- a/libs/hwui/Snapshot.h
+++ b/libs/hwui/Snapshot.h
@@ -55,6 +55,7 @@
                 || rect.intersects(dangerRects[3]);
     }
 
+    bool highPriority;
     Matrix4 matrix;
     Rect dangerRects[4];
     Rect innerRect;
@@ -166,8 +167,11 @@
 
     /**
      * Sets (and replaces) the current clipping outline
+     *
+     * If the current round rect clip is high priority, the incoming clip is ignored.
      */
-    void setClippingRoundRect(LinearAllocator& allocator, const Rect& bounds, float radius);
+    void setClippingRoundRect(LinearAllocator& allocator, const Rect& bounds,
+            float radius, bool highPriority);
 
     /**
      * Indicates whether this snapshot should be ignored. A snapshot
diff --git a/libs/hwui/StatefulBaseRenderer.cpp b/libs/hwui/StatefulBaseRenderer.cpp
index 3e1aed3..12b8c8d 100644
--- a/libs/hwui/StatefulBaseRenderer.cpp
+++ b/libs/hwui/StatefulBaseRenderer.cpp
@@ -198,13 +198,13 @@
         clipRect(bounds.left, bounds.top, bounds.right, bounds.bottom, SkRegion::kIntersect_Op);
     }
     if (outlineIsRounded) {
-        setClippingRoundRect(allocator, bounds, radius);
+        setClippingRoundRect(allocator, bounds, radius, false);
     }
 }
 
 void StatefulBaseRenderer::setClippingRoundRect(LinearAllocator& allocator,
-        const Rect& rect, float radius) {
-    mSnapshot->setClippingRoundRect(allocator, rect, radius);
+        const Rect& rect, float radius, bool highPriority) {
+    mSnapshot->setClippingRoundRect(allocator, rect, radius, highPriority);
 }
 
 
diff --git a/libs/hwui/StatefulBaseRenderer.h b/libs/hwui/StatefulBaseRenderer.h
index c6974b4..745e48a 100644
--- a/libs/hwui/StatefulBaseRenderer.h
+++ b/libs/hwui/StatefulBaseRenderer.h
@@ -97,7 +97,7 @@
      */
     void setClippingOutline(LinearAllocator& allocator, const Outline* outline);
     void setClippingRoundRect(LinearAllocator& allocator,
-            const Rect& rect, float radius);
+            const Rect& rect, float radius, bool highPriority = true);
 
     inline const mat4* currentTransform() const {
         return mSnapshot->transform;
diff --git a/location/java/android/location/Location.java b/location/java/android/location/Location.java
index bdd1195..fcf222b 100644
--- a/location/java/android/location/Location.java
+++ b/location/java/android/location/Location.java
@@ -16,6 +16,7 @@
 
 package android.location;
 
+import android.annotation.SystemApi;
 import android.os.Bundle;
 import android.os.Parcel;
 import android.os.Parcelable;
@@ -771,6 +772,7 @@
      * @see #makeComplete
      * @hide
      */
+    @SystemApi
     public boolean isComplete() {
         if (mProvider == null) return false;
         if (!mHasAccuracy) return false;
@@ -788,6 +790,7 @@
      * @see #isComplete
      * @hide
      */
+    @SystemApi
     public void makeComplete() {
         if (mProvider == null) mProvider = "?";
         if (!mHasAccuracy) {
@@ -957,6 +960,7 @@
      * @param isFromMockProvider true if this Location came from a mock provider, false otherwise
      * @hide
      */
+    @SystemApi
     public void setIsFromMockProvider(boolean isFromMockProvider) {
         mIsFromMockProvider = isFromMockProvider;
     }
diff --git a/location/java/android/location/LocationRequest.java b/location/java/android/location/LocationRequest.java
index c9162fe..271f2bb 100644
--- a/location/java/android/location/LocationRequest.java
+++ b/location/java/android/location/LocationRequest.java
@@ -16,6 +16,7 @@
 
 package android.location;
 
+import android.annotation.SystemApi;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.os.SystemClock;
@@ -84,6 +85,7 @@
  *
  * @hide
  */
+@SystemApi
 public final class LocationRequest implements Parcelable {
     /**
      * Used with {@link #setQuality} to request the most accurate locations available.
@@ -166,6 +168,7 @@
     }
 
     /** @hide */
+    @SystemApi
     public static LocationRequest createFromDeprecatedProvider(String provider, long minTime,
             float minDistance, boolean singleShot) {
         if (minTime < 0) minTime = 0;
@@ -191,6 +194,7 @@
     }
 
     /** @hide */
+    @SystemApi
     public static LocationRequest createFromDeprecatedCriteria(Criteria criteria, long minTime,
             float minDistance, boolean singleShot) {
         if (minTime < 0) minTime = 0;
@@ -475,6 +479,7 @@
 
 
     /** @hide */
+    @SystemApi
     public LocationRequest setProvider(String provider) {
         checkProvider(provider);
         mProvider = provider;
@@ -482,11 +487,13 @@
     }
 
     /** @hide */
+    @SystemApi
     public String getProvider() {
         return mProvider;
     }
 
     /** @hide */
+    @SystemApi
     public LocationRequest setSmallestDisplacement(float meters) {
         checkDisplacement(meters);
         mSmallestDisplacement = meters;
@@ -494,6 +501,7 @@
     }
 
     /** @hide */
+    @SystemApi
     public float getSmallestDisplacement() {
         return mSmallestDisplacement;
     }
@@ -508,11 +516,13 @@
      * @param workSource WorkSource defining power blame for this location request.
      * @hide
      */
+    @SystemApi
     public void setWorkSource(WorkSource workSource) {
         mWorkSource = workSource;
     }
 
     /** @hide */
+    @SystemApi
     public WorkSource getWorkSource() {
         return mWorkSource;
     }
@@ -531,11 +541,13 @@
      * @see android.app.AppOpsManager
      * @hide
      */
+    @SystemApi
     public void setHideFromAppOps(boolean hideFromAppOps) {
         mHideFromAppOps = hideFromAppOps;
     }
 
     /** @hide */
+    @SystemApi
     public boolean getHideFromAppOps() {
         return mHideFromAppOps;
     }
diff --git a/media/java/android/media/AudioPortEventHandler.java b/media/java/android/media/AudioPortEventHandler.java
index 8d2c172..9db4994 100644
--- a/media/java/android/media/AudioPortEventHandler.java
+++ b/media/java/android/media/AudioPortEventHandler.java
@@ -47,10 +47,7 @@
         mListeners = new ArrayList<AudioManager.OnAudioPortUpdateListener>();
 
         // find the looper for our new event handler
-        Looper looper = Looper.myLooper();
-        if (looper == null) {
-            looper = Looper.getMainLooper();
-        }
+        Looper looper = Looper.getMainLooper();
 
         if (looper != null) {
             mHandler = new Handler(looper) {
diff --git a/media/java/android/media/RemoteController.java b/media/java/android/media/RemoteController.java
index f378cef..fbfac89 100644
--- a/media/java/android/media/RemoteController.java
+++ b/media/java/android/media/RemoteController.java
@@ -789,8 +789,12 @@
     void startListeningToSessions() {
         final ComponentName listenerComponent = new ComponentName(mContext,
                 mOnClientUpdateListener.getClass());
+        Handler handler = null;
+        if (Looper.myLooper() == null) {
+            handler = new Handler(Looper.getMainLooper());
+        }
         mSessionManager.addOnActiveSessionsChangedListener(mSessionListener, listenerComponent,
-                UserHandle.myUserId(), null);
+                UserHandle.myUserId(), handler);
         mSessionListener.onActiveSessionsChanged(mSessionManager
                 .getActiveSessions(listenerComponent));
         if (DEBUG) {
diff --git a/packages/PrintSpooler/Android.mk b/packages/PrintSpooler/Android.mk
index 6e1402c..c4a55d1 100644
--- a/packages/PrintSpooler/Android.mk
+++ b/packages/PrintSpooler/Android.mk
@@ -23,6 +23,7 @@
 
 LOCAL_PACKAGE_NAME := PrintSpooler
 
+LOCAL_JNI_SHARED_LIBRARIES := libprintspooler_jni
 LOCAL_STATIC_JAVA_LIBRARIES := android-support-v4 android-support-v7-recyclerview
 
 include $(BUILD_PACKAGE)
diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index b116d76..023f627 100755
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -3215,7 +3215,6 @@
         if (resumed) {
             if (mUsageStatsService != null) {
                 mUsageStatsService.reportEvent(component.realActivity, component.userId,
-                        System.currentTimeMillis(),
                         UsageEvents.Event.MOVE_TO_FOREGROUND);
             }
             synchronized (stats) {
@@ -3224,7 +3223,6 @@
         } else {
             if (mUsageStatsService != null) {
                 mUsageStatsService.reportEvent(component.realActivity, component.userId,
-                        System.currentTimeMillis(),
                         UsageEvents.Event.MOVE_TO_BACKGROUND);
             }
             synchronized (stats) {
@@ -15936,6 +15934,7 @@
                 newConfig.seq = mConfigurationSeq;
                 mConfiguration = newConfig;
                 Slog.i(TAG, "Config changes=" + Integer.toHexString(changes) + " " + newConfig);
+                mUsageStatsService.reportConfigurationChange(newConfig, mCurrentUserId);
                 //mUsageStatsService.noteStartConfig(newConfig);
 
                 final Configuration configCopy = new Configuration(mConfiguration);
diff --git a/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java b/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
index cad2772..3e6191c 100644
--- a/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
+++ b/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
@@ -2996,10 +2996,12 @@
         mContext.enforceCallingOrSelfPermission(
                 android.Manifest.permission.BIND_DEVICE_ADMIN, null);
 
-        synchronized (this) {
-            DevicePolicyData policy = getUserData(userHandle);
-            long ident = Binder.clearCallingIdentity();
-            try {
+        long ident = Binder.clearCallingIdentity();
+        try {
+            boolean wipeData = false;
+            int identifier = 0;
+            synchronized (this) {
+                DevicePolicyData policy = getUserData(userHandle);
                 policy.mFailedPasswordAttempts++;
                 saveSettingsLocked(userHandle);
                 if (mHasFeature) {
@@ -3011,15 +3013,20 @@
                         // Wipe the user/profile associated with the policy that was violated. This
                         // is not necessarily calling user: if the policy that fired was from a
                         // managed profile rather than the main user profile, we wipe former only.
-                        wipeDeviceOrUserLocked(0, strictestAdmin.getUserHandle().getIdentifier());
+                        wipeData = true;
+                        identifier = strictestAdmin.getUserHandle().getIdentifier();
                     }
                     sendAdminCommandToSelfAndProfilesLocked(
                             DeviceAdminReceiver.ACTION_PASSWORD_FAILED,
                             DeviceAdminInfo.USES_POLICY_WATCH_LOGIN, userHandle);
                 }
-            } finally {
-                Binder.restoreCallingIdentity(ident);
             }
+            if (wipeData) {
+                // Call without holding lock.
+                wipeDeviceOrUserLocked(0, identifier);
+            }
+        } finally {
+            Binder.restoreCallingIdentity(ident);
         }
     }
 
diff --git a/services/usage/java/com/android/server/usage/IntervalStats.java b/services/usage/java/com/android/server/usage/IntervalStats.java
index dc036e2..6c80a65 100644
--- a/services/usage/java/com/android/server/usage/IntervalStats.java
+++ b/services/usage/java/com/android/server/usage/IntervalStats.java
@@ -15,17 +15,23 @@
  */
 package com.android.server.usage;
 
+import android.app.usage.ConfigurationStats;
 import android.app.usage.TimeSparseArray;
 import android.app.usage.UsageEvents;
 import android.app.usage.UsageStats;
+import android.content.res.Configuration;
 import android.util.ArrayMap;
 import android.util.ArraySet;
 
+import java.util.ArrayList;
+
 class IntervalStats {
     public long beginTime;
     public long endTime;
     public long lastTimeSaved;
     public final ArrayMap<String, UsageStats> stats = new ArrayMap<>();
+    public final ArrayMap<Configuration, ConfigurationStats> configurations = new ArrayMap<>();
+    public Configuration activeConfiguration;
     public TimeSparseArray<UsageEvents.Event> events;
 
     // A string cache. This is important as when we're parsing XML files, we don't want to
@@ -34,18 +40,49 @@
     // strings that had identical copies in the cache.
     private final ArraySet<String> mStringCache = new ArraySet<>();
 
+    /**
+     * Gets the UsageStats object for the given package, or creates one and adds it internally.
+     */
     UsageStats getOrCreateUsageStats(String packageName) {
         UsageStats usageStats = stats.get(packageName);
         if (usageStats == null) {
             usageStats = new UsageStats();
-            usageStats.mPackageName = packageName;
+            usageStats.mPackageName = getCachedStringRef(packageName);
             usageStats.mBeginTimeStamp = beginTime;
             usageStats.mEndTimeStamp = endTime;
-            stats.put(packageName, usageStats);
+            stats.put(usageStats.mPackageName, usageStats);
         }
         return usageStats;
     }
 
+    /**
+     * Gets the ConfigurationStats object for the given configuration, or creates one and adds it
+     * internally.
+     */
+    ConfigurationStats getOrCreateConfigurationStats(Configuration config) {
+        ConfigurationStats configStats = configurations.get(config);
+        if (configStats == null) {
+            configStats = new ConfigurationStats();
+            configStats.mBeginTimeStamp = beginTime;
+            configStats.mEndTimeStamp = endTime;
+            configStats.mConfiguration = config;
+            configurations.put(config, configStats);
+        }
+        return configStats;
+    }
+
+    /**
+     * Builds a UsageEvents.Event, but does not add it internally.
+     */
+    UsageEvents.Event buildEvent(String packageName, String className) {
+        UsageEvents.Event event = new UsageEvents.Event();
+        event.mPackage = getCachedStringRef(packageName);
+        if (className != null) {
+            event.mClass = getCachedStringRef(className);
+        }
+        return event;
+    }
+
     void update(String packageName, long timeStamp, int eventType) {
         UsageStats usageStats = getOrCreateUsageStats(packageName);
 
@@ -61,6 +98,28 @@
         usageStats.mLastEvent = eventType;
         usageStats.mLastTimeUsed = timeStamp;
         usageStats.mEndTimeStamp = timeStamp;
+
+        if (eventType == UsageEvents.Event.MOVE_TO_FOREGROUND) {
+            usageStats.mLaunchCount += 1;
+        }
+
+        endTime = timeStamp;
+    }
+
+    void updateConfigurationStats(Configuration config, long timeStamp) {
+        if (activeConfiguration != null) {
+            ConfigurationStats activeStats = configurations.get(activeConfiguration);
+            activeStats.mTotalTimeActive += timeStamp - activeStats.mLastTimeActive;
+            activeStats.mLastTimeActive = timeStamp - 1;
+        }
+
+        if (config != null) {
+            ConfigurationStats configStats = getOrCreateConfigurationStats(config);
+            configStats.mLastTimeActive = timeStamp;
+            configStats.mActivationCount += 1;
+            activeConfiguration = configStats.mConfiguration;
+        }
+
         endTime = timeStamp;
     }
 
@@ -72,13 +131,4 @@
         }
         return mStringCache.valueAt(index);
     }
-
-    UsageEvents.Event buildEvent(String packageName, String className) {
-        UsageEvents.Event event = new UsageEvents.Event();
-        event.mPackage = getCachedStringRef(packageName);
-        if (className != null) {
-            event.mClass = getCachedStringRef(className);
-        }
-        return event;
-    }
 }
diff --git a/services/usage/java/com/android/server/usage/UsageStatsDatabase.java b/services/usage/java/com/android/server/usage/UsageStatsDatabase.java
index e6ce0fe..37340a4 100644
--- a/services/usage/java/com/android/server/usage/UsageStatsDatabase.java
+++ b/services/usage/java/com/android/server/usage/UsageStatsDatabase.java
@@ -17,7 +17,6 @@
 package com.android.server.usage;
 
 import android.app.usage.TimeSparseArray;
-import android.app.usage.UsageStats;
 import android.app.usage.UsageStatsManager;
 import android.util.AtomicFile;
 import android.util.Slog;
@@ -133,9 +132,30 @@
     }
 
     /**
-     * Find all {@link UsageStats} for the given range and interval type.
+     * Figures out what to extract from the given IntervalStats object.
      */
-    public List<UsageStats> queryUsageStats(int intervalType, long beginTime, long endTime) {
+    interface StatCombiner<T> {
+
+        /**
+         * Implementations should extract interesting from <code>stats</code> and add it
+         * to the <code>accumulatedResult</code> list.
+         *
+         * If the <code>stats</code> object is mutable, <code>mutable</code> will be true,
+         * which means you should make a copy of the data before adding it to the
+         * <code>accumulatedResult</code> list.
+         *
+         * @param stats The {@link IntervalStats} object selected.
+         * @param mutable Whether or not the data inside the stats object is mutable.
+         * @param accumulatedResult The list to which to add extracted data.
+         */
+        void combine(IntervalStats stats, boolean mutable, List<T> accumulatedResult);
+    }
+
+    /**
+     * Find all {@link IntervalStats} for the given range and interval type.
+     */
+    public <T> List<T> queryUsageStats(int intervalType, long beginTime, long endTime,
+            StatCombiner<T> combiner) {
         synchronized (mLock) {
             if (intervalType < 0 || intervalType >= mIntervalDirs.length) {
                 throw new IllegalArgumentException("Bad interval type " + intervalType);
@@ -157,7 +177,7 @@
 
             try {
                 IntervalStats stats = new IntervalStats();
-                ArrayList<UsageStats> results = new ArrayList<>();
+                ArrayList<T> results = new ArrayList<>();
                 for (int i = startIndex; i <= endIndex; i++) {
                     final AtomicFile f = mSortedStatFiles[intervalType].valueAt(i);
 
@@ -167,7 +187,7 @@
 
                     UsageStatsXml.read(f, stats);
                     if (beginTime < stats.endTime) {
-                        results.addAll(stats.stats.values());
+                        combiner.combine(stats, false, results);
                     }
                 }
                 return results;
@@ -209,6 +229,10 @@
     public void prune() {
         synchronized (mLock) {
             long timeNow = System.currentTimeMillis();
+            mCal.setTimeInMillis(timeNow);
+            mCal.add(Calendar.YEAR, -3);
+            pruneFilesOlderThan(mIntervalDirs[UsageStatsManager.INTERVAL_YEARLY],
+                    mCal.getTimeInMillis());
 
             mCal.setTimeInMillis(timeNow);
             mCal.add(Calendar.MONTH, -6);
diff --git a/services/usage/java/com/android/server/usage/UsageStatsService.java b/services/usage/java/com/android/server/usage/UsageStatsService.java
index 0e8b427..e77bf86 100644
--- a/services/usage/java/com/android/server/usage/UsageStatsService.java
+++ b/services/usage/java/com/android/server/usage/UsageStatsService.java
@@ -18,6 +18,7 @@
 
 import android.Manifest;
 import android.app.AppOpsManager;
+import android.app.usage.ConfigurationStats;
 import android.app.usage.IUsageStatsManager;
 import android.app.usage.UsageEvents;
 import android.app.usage.UsageStats;
@@ -30,11 +31,13 @@
 import android.content.pm.PackageManager;
 import android.content.pm.ParceledListSlice;
 import android.content.pm.UserInfo;
+import android.content.res.Configuration;
 import android.os.Binder;
 import android.os.Environment;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.Message;
+import android.os.RemoteException;
 import android.os.UserHandle;
 import android.os.UserManager;
 import android.util.ArraySet;
@@ -218,8 +221,7 @@
      * Called by the Binder stub.
      */
     List<UsageStats> queryUsageStats(int userId, int bucketType, long beginTime, long endTime) {
-        final long timeNow = System.currentTimeMillis();
-        if (beginTime > timeNow) {
+        if (!validRange(beginTime, endTime)) {
             return null;
         }
 
@@ -232,15 +234,23 @@
     /**
      * Called by the Binder stub.
      */
+    List<ConfigurationStats> queryConfigurationStats(int userId, int bucketType, long beginTime,
+            long endTime) {
+        if (!validRange(beginTime, endTime)) {
+            return null;
+        }
+
+        synchronized (mLock) {
+            UserUsageStatsService service = getUserDataAndInitializeIfNeededLocked(userId);
+            return service.queryConfigurationStats(bucketType, beginTime, endTime);
+        }
+    }
+
+    /**
+     * Called by the Binder stub.
+     */
     UsageEvents queryEvents(int userId, long beginTime, long endTime) {
-        final long timeNow = System.currentTimeMillis();
-
-        // Adjust the endTime so that we don't query for the latest events.
-        // This is to prevent apps from making decision based on what app launched them,
-        // etc.
-        endTime = Math.min(endTime, timeNow - END_TIME_DELAY);
-
-        if (beginTime > endTime) {
+        if (!validRange(beginTime, endTime)) {
             return null;
         }
 
@@ -250,6 +260,11 @@
         }
     }
 
+    private static boolean validRange(long beginTime, long endTime) {
+        final long timeNow = System.currentTimeMillis();
+        return beginTime <= timeNow && beginTime < endTime;
+    }
+
     private void flushToDiskLocked() {
         final int userCount = mUserState.size();
         for (int i = 0; i < userCount; i++) {
@@ -323,6 +338,28 @@
         }
 
         @Override
+        public ParceledListSlice<ConfigurationStats> queryConfigurationStats(int bucketType,
+                long beginTime, long endTime, String callingPackage) throws RemoteException {
+            if (!hasPermission(callingPackage)) {
+                return null;
+            }
+
+            final int userId = UserHandle.getCallingUserId();
+            final long token = Binder.clearCallingIdentity();
+            try {
+                final List<ConfigurationStats> results =
+                        UsageStatsService.this.queryConfigurationStats(userId, bucketType,
+                                beginTime, endTime);
+                if (results != null) {
+                    return new ParceledListSlice<>(results);
+                }
+            } finally {
+                Binder.restoreCallingIdentity(token);
+            }
+            return null;
+        }
+
+        @Override
         public UsageEvents queryEvents(long beginTime, long endTime, String callingPackage) {
             if (!hasPermission(callingPackage)) {
                 return null;
@@ -346,8 +383,7 @@
     private class LocalService extends UsageStatsManagerInternal {
 
         @Override
-        public void reportEvent(ComponentName component, int userId,
-                long timeStamp, int eventType) {
+        public void reportEvent(ComponentName component, int userId, int eventType) {
             if (component == null) {
                 Slog.w(TAG, "Event reported without a component name");
                 return;
@@ -356,12 +392,27 @@
             UsageEvents.Event event = new UsageEvents.Event();
             event.mPackage = component.getPackageName();
             event.mClass = component.getClassName();
-            event.mTimeStamp = timeStamp;
+            event.mTimeStamp = System.currentTimeMillis();
             event.mEventType = eventType;
             mHandler.obtainMessage(MSG_REPORT_EVENT, userId, 0, event).sendToTarget();
         }
 
         @Override
+        public void reportConfigurationChange(Configuration config, int userId) {
+            if (config == null) {
+                Slog.w(TAG, "Configuration event reported with a null config");
+                return;
+            }
+
+            UsageEvents.Event event = new UsageEvents.Event();
+            event.mPackage = "android";
+            event.mTimeStamp = System.currentTimeMillis();
+            event.mEventType = UsageEvents.Event.CONFIGURATION_CHANGE;
+            event.mConfiguration = new Configuration(config);
+            mHandler.obtainMessage(MSG_REPORT_EVENT, userId, 0, event).sendToTarget();
+        }
+
+        @Override
         public void prepareShutdown() {
             // This method *WILL* do IO work, but we must block until it is finished or else
             // we might not shutdown cleanly. This is ok to do with the 'am' lock held, because
diff --git a/services/usage/java/com/android/server/usage/UsageStatsXmlV1.java b/services/usage/java/com/android/server/usage/UsageStatsXmlV1.java
index 374429a..6529950 100644
--- a/services/usage/java/com/android/server/usage/UsageStatsXmlV1.java
+++ b/services/usage/java/com/android/server/usage/UsageStatsXmlV1.java
@@ -20,68 +20,69 @@
 
 import org.xmlpull.v1.XmlPullParser;
 import org.xmlpull.v1.XmlPullParserException;
+import org.xmlpull.v1.XmlSerializer;
 
+import android.app.usage.ConfigurationStats;
 import android.app.usage.TimeSparseArray;
 import android.app.usage.UsageEvents;
 import android.app.usage.UsageStats;
 import android.content.ComponentName;
+import android.content.res.Configuration;
 
 import java.io.IOException;
 import java.net.ProtocolException;
+import java.util.Locale;
 
 /**
  * UsageStats reader/writer for version 1 of the XML format.
  */
 final class UsageStatsXmlV1 {
+    private static final String PACKAGE_TAG = "package";
+    private static final String CONFIGURATION_TAG = "config";
+    private static final String EVENT_LOG_TAG = "event-log";
+
     private static final String BEGIN_TIME_ATTR = "beginTime";
     private static final String END_TIME_ATTR = "endTime";
-    private static final String PACKAGE_TAG = "package";
     private static final String NAME_ATTR = "name";
     private static final String PACKAGE_ATTR = "package";
     private static final String CLASS_ATTR = "class";
     private static final String TOTAL_TIME_ACTIVE_ATTR = "totalTimeActive";
     private static final String LAST_TIME_ACTIVE_ATTR = "lastTimeActive";
+    private static final String COUNT_ATTR = "count";
+    private static final String ACTIVE_ATTR = "active";
     private static final String LAST_EVENT_ATTR = "lastEvent";
-    private static final String EVENT_LOG_TAG = "event-log";
     private static final String TYPE_ATTR = "type";
     private static final String TIME_ATTR = "time";
 
-    private static UsageStats readNextUsageStats(XmlPullParser parser)
+    private static void loadUsageStats(XmlPullParser parser, IntervalStats statsOut)
             throws XmlPullParserException, IOException {
-        if (parser.getEventType() != XmlPullParser.START_TAG) {
-            XmlUtils.nextElement(parser);
-        }
-
-        if (parser.getEventType() != XmlPullParser.START_TAG ||
-                !parser.getName().equals(PACKAGE_TAG)) {
-            return null;
-        }
-
         final String name = parser.getAttributeValue(null, NAME_ATTR);
         if (name == null) {
             throw new ProtocolException("no " + NAME_ATTR + " attribute present");
         }
 
-        UsageStats stats = new UsageStats();
-        stats.mPackageName = name;
+        UsageStats stats = statsOut.getOrCreateUsageStats(name);
         stats.mTotalTimeInForeground = XmlUtils.readLongAttribute(parser, TOTAL_TIME_ACTIVE_ATTR);
         stats.mLastTimeUsed = XmlUtils.readLongAttribute(parser, LAST_TIME_ACTIVE_ATTR);
         stats.mLastEvent = XmlUtils.readIntAttribute(parser, LAST_EVENT_ATTR);
-        XmlUtils.skipCurrentTag(parser);
-        return stats;
     }
 
-    private static UsageEvents.Event readNextEvent(XmlPullParser parser, IntervalStats statsOut)
+    private static void loadConfigStats(XmlPullParser parser, IntervalStats statsOut)
             throws XmlPullParserException, IOException {
-        if (parser.getEventType() != XmlPullParser.START_TAG) {
-            XmlUtils.nextElement(parser);
-        }
+        final Configuration config = new Configuration();
+        Configuration.readXmlAttrs(parser, config);
 
-        if (parser.getEventType() != XmlPullParser.START_TAG ||
-                !parser.getName().equals(EVENT_LOG_TAG)) {
-            return null;
+        ConfigurationStats configStats = statsOut.getOrCreateConfigurationStats(config);
+        configStats.mLastTimeActive = XmlUtils.readLongAttribute(parser, LAST_TIME_ACTIVE_ATTR);
+        configStats.mTotalTimeActive = XmlUtils.readLongAttribute(parser, TOTAL_TIME_ACTIVE_ATTR);
+        configStats.mActivationCount = XmlUtils.readIntAttribute(parser, COUNT_ATTR);
+        if (XmlUtils.readBooleanAttribute(parser, ACTIVE_ATTR)) {
+            statsOut.activeConfiguration = configStats.mConfiguration;
         }
+    }
 
+    private static void loadEvent(XmlPullParser parser, IntervalStats statsOut)
+            throws XmlPullParserException, IOException {
         String packageName = XmlUtils.readStringAttribute(parser, PACKAGE_ATTR);
         String className;
         if (packageName == null) {
@@ -105,31 +106,60 @@
         UsageEvents.Event event = statsOut.buildEvent(packageName, className);
         event.mEventType = XmlUtils.readIntAttribute(parser, TYPE_ATTR);
         event.mTimeStamp = XmlUtils.readLongAttribute(parser, TIME_ATTR);
-        XmlUtils.skipCurrentTag(parser);
-        return event;
-    }
 
-    private static void writeUsageStats(FastXmlSerializer serializer, UsageStats stats)
-            throws IOException {
-        serializer.startTag(null, PACKAGE_TAG);
-        serializer.attribute(null, NAME_ATTR, stats.mPackageName);
-        serializer.attribute(null, TOTAL_TIME_ACTIVE_ATTR,
-                Long.toString(stats.mTotalTimeInForeground));
-        serializer.attribute(null, LAST_TIME_ACTIVE_ATTR, Long.toString(stats.mLastTimeUsed));
-        serializer.attribute(null, LAST_EVENT_ATTR, Integer.toString(stats.mLastEvent));
-        serializer.endTag(null, PACKAGE_TAG);
-    }
-
-    private static void writeEvent(FastXmlSerializer serializer, UsageEvents.Event event)
-            throws IOException {
-        serializer.startTag(null, EVENT_LOG_TAG);
-        serializer.attribute(null, PACKAGE_ATTR, event.mPackage);
-        if (event.mClass != null) {
-            serializer.attribute(null, CLASS_ATTR, event.mClass);
+        if (event.mEventType == UsageEvents.Event.CONFIGURATION_CHANGE) {
+            event.mConfiguration = new Configuration();
+            Configuration.readXmlAttrs(parser, event.mConfiguration);
         }
-        serializer.attribute(null, TYPE_ATTR, Integer.toString(event.getEventType()));
-        serializer.attribute(null, TIME_ATTR, Long.toString(event.getTimeStamp()));
-        serializer.endTag(null, EVENT_LOG_TAG);
+
+        if (statsOut.events == null) {
+            statsOut.events = new TimeSparseArray<>();
+        }
+        statsOut.events.put(event.mTimeStamp, event);
+    }
+
+    private static void writeUsageStats(XmlSerializer xml, final UsageStats stats)
+            throws IOException {
+        xml.startTag(null, PACKAGE_TAG);
+        XmlUtils.writeStringAttribute(xml, NAME_ATTR, stats.mPackageName);
+        XmlUtils.writeLongAttribute(xml, TOTAL_TIME_ACTIVE_ATTR, stats.mTotalTimeInForeground);
+        XmlUtils.writeLongAttribute(xml, LAST_TIME_ACTIVE_ATTR, stats.mLastTimeUsed);
+        XmlUtils.writeIntAttribute(xml, LAST_EVENT_ATTR, stats.mLastEvent);
+        xml.endTag(null, PACKAGE_TAG);
+    }
+
+    private static void writeConfigStats(XmlSerializer xml, final ConfigurationStats stats,
+            boolean isActive) throws IOException {
+        xml.startTag(null, CONFIGURATION_TAG);
+        XmlUtils.writeLongAttribute(xml, LAST_TIME_ACTIVE_ATTR, stats.mLastTimeActive);
+        XmlUtils.writeLongAttribute(xml, TOTAL_TIME_ACTIVE_ATTR, stats.mTotalTimeActive);
+        XmlUtils.writeIntAttribute(xml, COUNT_ATTR, stats.mActivationCount);
+        if (isActive) {
+            XmlUtils.writeBooleanAttribute(xml, ACTIVE_ATTR, true);
+        }
+
+        // Now write the attributes representing the configuration object.
+        Configuration.writeXmlAttrs(xml, stats.mConfiguration);
+
+        xml.endTag(null, CONFIGURATION_TAG);
+    }
+
+    private static void writeEvent(XmlSerializer xml, final UsageEvents.Event event)
+            throws IOException {
+        xml.startTag(null, EVENT_LOG_TAG);
+        XmlUtils.writeStringAttribute(xml, PACKAGE_ATTR, event.mPackage);
+        if (event.mClass != null) {
+            XmlUtils.writeStringAttribute(xml, CLASS_ATTR, event.mClass);
+        }
+        XmlUtils.writeIntAttribute(xml, TYPE_ATTR, event.mEventType);
+        XmlUtils.writeLongAttribute(xml, TIME_ATTR, event.mTimeStamp);
+
+        if (event.mEventType == UsageEvents.Event.CONFIGURATION_CHANGE
+                && event.mConfiguration != null) {
+            Configuration.writeXmlAttrs(xml, event.mConfiguration);
+        }
+
+        xml.endTag(null, EVENT_LOG_TAG);
     }
 
     /**
@@ -142,6 +172,8 @@
     public static void read(XmlPullParser parser, IntervalStats statsOut)
             throws XmlPullParserException, IOException {
         statsOut.stats.clear();
+        statsOut.configurations.clear();
+        statsOut.activeConfiguration = null;
 
         if (statsOut.events != null) {
             statsOut.events.clear();
@@ -149,21 +181,29 @@
 
         statsOut.beginTime = XmlUtils.readLongAttribute(parser, BEGIN_TIME_ATTR);
         statsOut.endTime = XmlUtils.readLongAttribute(parser, END_TIME_ATTR);
-        XmlUtils.nextElement(parser);
 
-        UsageStats pkgStats;
-        while ((pkgStats = readNextUsageStats(parser)) != null) {
-            pkgStats.mBeginTimeStamp = statsOut.beginTime;
-            pkgStats.mEndTimeStamp = statsOut.endTime;
-            statsOut.stats.put(pkgStats.mPackageName, pkgStats);
-        }
-
-        UsageEvents.Event event;
-        while ((event = readNextEvent(parser, statsOut)) != null) {
-            if (statsOut.events == null) {
-                statsOut.events = new TimeSparseArray<>();
+        int eventCode;
+        int outerDepth = parser.getDepth();
+        while ((eventCode = parser.next()) != XmlPullParser.END_DOCUMENT
+                && (eventCode != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) {
+            if (eventCode != XmlPullParser.START_TAG) {
+                continue;
             }
-            statsOut.events.put(event.getTimeStamp(), event);
+
+            final String tag = parser.getName();
+            switch (tag) {
+                case PACKAGE_TAG:
+                    loadUsageStats(parser, statsOut);
+                    break;
+
+                case CONFIGURATION_TAG:
+                    loadConfigStats(parser, statsOut);
+                    break;
+
+                case EVENT_LOG_TAG:
+                    loadEvent(parser, statsOut);
+                    break;
+            }
         }
     }
 
@@ -184,11 +224,15 @@
             writeUsageStats(serializer, stats.stats.valueAt(i));
         }
 
-        if (stats.events != null) {
-            final int eventCount = stats.events.size();
-            for (int i = 0; i < eventCount; i++) {
-                writeEvent(serializer, stats.events.valueAt(i));
-            }
+        final int configCount = stats.configurations.size();
+        for (int i = 0; i < configCount; i++) {
+            boolean active = stats.activeConfiguration.equals(stats.configurations.keyAt(i));
+            writeConfigStats(serializer, stats.configurations.valueAt(i), active);
+        }
+
+        final int eventCount = stats.events != null ? stats.events.size() : 0;
+        for (int i = 0; i < eventCount; i++) {
+            writeEvent(serializer, stats.events.valueAt(i));
         }
     }
 
diff --git a/services/usage/java/com/android/server/usage/UserUsageStatsService.java b/services/usage/java/com/android/server/usage/UserUsageStatsService.java
index 6951590..7142a99 100644
--- a/services/usage/java/com/android/server/usage/UserUsageStatsService.java
+++ b/services/usage/java/com/android/server/usage/UserUsageStatsService.java
@@ -16,13 +16,17 @@
 
 package com.android.server.usage;
 
+import android.app.usage.ConfigurationStats;
 import android.app.usage.TimeSparseArray;
 import android.app.usage.UsageEvents;
 import android.app.usage.UsageStats;
 import android.app.usage.UsageStatsManager;
+import android.content.res.Configuration;
 import android.util.ArraySet;
 import android.util.Slog;
 
+import com.android.server.usage.UsageStatsDatabase.StatCombiner;
+
 import java.io.File;
 import java.io.IOException;
 import java.text.SimpleDateFormat;
@@ -108,35 +112,91 @@
                     notifyStatsChanged();
                 }
             }
+
+            stat.updateConfigurationStats(null, stat.lastTimeSaved);
         }
     }
 
     void reportEvent(UsageEvents.Event event) {
         if (DEBUG) {
             Slog.d(TAG, mLogPrefix + "Got usage event for " + event.mPackage
-                    + "[" + event.getTimeStamp() + "]: "
-                    + eventToString(event.getEventType()));
+                    + "[" + event.mTimeStamp + "]: "
+                    + eventToString(event.mEventType));
         }
 
-        if (event.getTimeStamp() >= mDailyExpiryDate.getTimeInMillis()) {
+        if (event.mTimeStamp >= mDailyExpiryDate.getTimeInMillis()) {
             // Need to rollover
             rolloverStats();
         }
 
-        if (mCurrentStats[UsageStatsManager.INTERVAL_DAILY].events == null) {
-            mCurrentStats[UsageStatsManager.INTERVAL_DAILY].events = new TimeSparseArray<>();
+        final IntervalStats currentDailyStats = mCurrentStats[UsageStatsManager.INTERVAL_DAILY];
+
+        final Configuration newFullConfig = event.mConfiguration;
+        if (event.mEventType == UsageEvents.Event.CONFIGURATION_CHANGE &&
+                currentDailyStats.activeConfiguration != null) {
+            // Make the event configuration a delta.
+            event.mConfiguration = Configuration.generateDelta(
+                    currentDailyStats.activeConfiguration, newFullConfig);
         }
-        mCurrentStats[UsageStatsManager.INTERVAL_DAILY].events.put(event.getTimeStamp(), event);
+
+        // Add the event to the daily list.
+        if (currentDailyStats.events == null) {
+            currentDailyStats.events = new TimeSparseArray<>();
+        }
+        currentDailyStats.events.put(event.mTimeStamp, event);
 
         for (IntervalStats stats : mCurrentStats) {
-            stats.update(event.mPackage, event.getTimeStamp(),
-                    event.getEventType());
+            if (event.mEventType == UsageEvents.Event.CONFIGURATION_CHANGE) {
+                stats.updateConfigurationStats(newFullConfig, event.mTimeStamp);
+            } else {
+                stats.update(event.mPackage, event.mTimeStamp, event.mEventType);
+            }
         }
 
         notifyStatsChanged();
     }
 
-    List<UsageStats> queryUsageStats(int bucketType, long beginTime, long endTime) {
+    private static final StatCombiner<UsageStats> sUsageStatsCombiner =
+            new StatCombiner<UsageStats>() {
+                @Override
+                public void combine(IntervalStats stats, boolean mutable,
+                        List<UsageStats> accResult) {
+                    if (!mutable) {
+                        accResult.addAll(stats.stats.values());
+                        return;
+                    }
+
+                    final int statCount = stats.stats.size();
+                    for (int i = 0; i < statCount; i++) {
+                        accResult.add(new UsageStats(stats.stats.valueAt(i)));
+                    }
+                }
+            };
+
+    private static final StatCombiner<ConfigurationStats> sConfigStatsCombiner =
+            new StatCombiner<ConfigurationStats>() {
+                @Override
+                public void combine(IntervalStats stats, boolean mutable,
+                        List<ConfigurationStats> accResult) {
+                    if (!mutable) {
+                        accResult.addAll(stats.configurations.values());
+                        return;
+                    }
+
+                    final int configCount = stats.configurations.size();
+                    for (int i = 0; i < configCount; i++) {
+                        accResult.add(new ConfigurationStats(stats.configurations.valueAt(i)));
+                    }
+                }
+            };
+
+    /**
+     * Generic query method that selects the appropriate IntervalStats for the specified time range
+     * and bucket, then calls the {@link com.android.server.usage.UsageStatsDatabase.StatCombiner}
+     * provided to select the stats to use from the IntervalStats object.
+     */
+    private <T> List<T> queryStats(int bucketType, long beginTime, long endTime,
+            StatCombiner<T> combiner) {
         if (bucketType == UsageStatsManager.INTERVAL_BEST) {
             bucketType = mDatabase.findBestFitBucket(beginTime, endTime);
         }
@@ -161,11 +221,8 @@
                 Slog.d(TAG, mLogPrefix + "Returning in-memory stats for bucket " + bucketType);
             }
             // Fast path for retrieving in-memory state.
-            ArrayList<UsageStats> results = new ArrayList<>();
-            final int packageCount = mCurrentStats[bucketType].stats.size();
-            for (int i = 0; i < packageCount; i++) {
-                results.add(new UsageStats(mCurrentStats[bucketType].stats.valueAt(i)));
-            }
+            ArrayList<T> results = new ArrayList<>();
+            combiner.combine(mCurrentStats[bucketType], true, results);
             return results;
         }
 
@@ -178,13 +235,21 @@
                     + beginTime + " AND endTime < " + endTime);
         }
 
-        final List<UsageStats> results = mDatabase.queryUsageStats(bucketType, beginTime, endTime);
+        final List<T> results = mDatabase.queryUsageStats(bucketType, beginTime, endTime, combiner);
         if (DEBUG) {
             Slog.d(TAG, mLogPrefix + "Results: " + (results == null ? 0 : results.size()));
         }
         return results;
     }
 
+    List<UsageStats> queryUsageStats(int bucketType, long beginTime, long endTime) {
+        return queryStats(bucketType, beginTime, endTime, sUsageStatsCombiner);
+    }
+
+    List<ConfigurationStats> queryConfigurationStats(int bucketType, long beginTime, long endTime) {
+        return queryStats(bucketType, beginTime, endTime, sConfigStatsCombiner);
+    }
+
     UsageEvents queryEvents(long beginTime, long endTime) {
         if (endTime > mCurrentStats[UsageStatsManager.INTERVAL_DAILY].beginTime) {
             if (beginTime > mCurrentStats[UsageStatsManager.INTERVAL_DAILY].endTime) {
@@ -245,6 +310,8 @@
 
         // Finish any ongoing events with an END_OF_DAY event. Make a note of which components
         // need a new CONTINUE_PREVIOUS_DAY entry.
+        final Configuration previousConfig =
+                mCurrentStats[UsageStatsManager.INTERVAL_DAILY].activeConfiguration;
         ArraySet<String> continuePreviousDay = new ArraySet<>();
         for (IntervalStats stat : mCurrentStats) {
             final int pkgCount = stat.stats.size();
@@ -253,11 +320,13 @@
                 if (pkgStats.mLastEvent == UsageEvents.Event.MOVE_TO_FOREGROUND ||
                         pkgStats.mLastEvent == UsageEvents.Event.CONTINUE_PREVIOUS_DAY) {
                     continuePreviousDay.add(pkgStats.mPackageName);
-                    stat.update(pkgStats.mPackageName,
-                            mDailyExpiryDate.getTimeInMillis() - 1, UsageEvents.Event.END_OF_DAY);
+                    stat.update(pkgStats.mPackageName, mDailyExpiryDate.getTimeInMillis() - 1,
+                            UsageEvents.Event.END_OF_DAY);
                     mStatsChanged = true;
                 }
             }
+
+            stat.updateConfigurationStats(null, mDailyExpiryDate.getTimeInMillis() - 1);
         }
 
         persistActiveStats();
@@ -267,9 +336,10 @@
         final int continueCount = continuePreviousDay.size();
         for (int i = 0; i < continueCount; i++) {
             String name = continuePreviousDay.valueAt(i);
+            final long beginTime = mCurrentStats[UsageStatsManager.INTERVAL_DAILY].beginTime;
             for (IntervalStats stat : mCurrentStats) {
-                stat.update(name, mCurrentStats[UsageStatsManager.INTERVAL_DAILY].beginTime,
-                        UsageEvents.Event.CONTINUE_PREVIOUS_DAY);
+                stat.update(name, beginTime, UsageEvents.Event.CONTINUE_PREVIOUS_DAY);
+                stat.updateConfigurationStats(previousConfig, beginTime);
                 mStatsChanged = true;
             }
         }
@@ -353,6 +423,8 @@
                 return "END_OF_DAY";
             case UsageEvents.Event.CONTINUE_PREVIOUS_DAY:
                 return "CONTINUE_PREVIOUS_DAY";
+            case UsageEvents.Event.CONFIGURATION_CHANGE:
+                return "CONFIGURATION_CHANGE";
             default:
                 return "UNKNOWN";
         }
diff --git a/tests/UsageStatsTest/Android.mk b/tests/UsageStatsTest/Android.mk
index 69fefeb..5f7467a 100644
--- a/tests/UsageStatsTest/Android.mk
+++ b/tests/UsageStatsTest/Android.mk
@@ -6,6 +6,8 @@
 # Only compile source java files in this apk.
 LOCAL_SRC_FILES := $(call all-java-files-under, src)
 
+LOCAL_STATIC_JAVA_LIBRARIES := android-support-v4
+
 LOCAL_PACKAGE_NAME := UsageStatsTest
 
 include $(BUILD_PACKAGE)
diff --git a/tests/UsageStatsTest/res/layout/config_row_item.xml b/tests/UsageStatsTest/res/layout/config_row_item.xml
new file mode 100644
index 0000000..547de04
--- /dev/null
+++ b/tests/UsageStatsTest/res/layout/config_row_item.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<TextView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@android:id/text1"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingLeft="16dp"
+    android:paddingRight="16dp"/>
diff --git a/tests/UsageStatsTest/res/layout/row_item.xml b/tests/UsageStatsTest/res/layout/row_item.xml
index da50163..4f2bfe4 100644
--- a/tests/UsageStatsTest/res/layout/row_item.xml
+++ b/tests/UsageStatsTest/res/layout/row_item.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="horizontal"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:paddingLeft="16dp"
@@ -8,13 +9,10 @@
     <TextView android:id="@android:id/text1"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_alignParentLeft="true"
-        android:layout_centerVertical="true"
+        android:layout_weight="1"
         android:textStyle="bold"/>
 
     <TextView android:id="@android:id/text2"
         android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_alignParentRight="true"
-        android:layout_alignBaseline="@android:id/text1"/>
-</RelativeLayout>
+        android:layout_height="wrap_content"/>
+</LinearLayout>
diff --git a/tests/UsageStatsTest/src/com/android/tests/usagestats/UsageLogActivity.java b/tests/UsageStatsTest/src/com/android/tests/usagestats/UsageLogActivity.java
index 5f62ad8..31e7c38 100644
--- a/tests/UsageStatsTest/src/com/android/tests/usagestats/UsageLogActivity.java
+++ b/tests/UsageStatsTest/src/com/android/tests/usagestats/UsageLogActivity.java
@@ -21,6 +21,7 @@
 import android.content.Context;
 import android.os.Bundle;
 import android.os.Handler;
+import android.support.v4.util.CircularArray;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -35,11 +36,14 @@
     private UsageStatsManager mUsageStatsManager;
     private Adapter mAdapter;
     private Handler mHandler = new Handler();
+    private long mLastTime;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         mUsageStatsManager = (UsageStatsManager) getSystemService(Context.USAGE_STATS_SERVICE);
+        mLastTime = System.currentTimeMillis() - USAGE_STATS_PERIOD;
+
         mAdapter = new Adapter();
         setListAdapter(mAdapter);
     }
@@ -59,24 +63,31 @@
     @Override
     public void run() {
         long now = System.currentTimeMillis();
-        long beginTime = now - USAGE_STATS_PERIOD;
-        UsageEvents events = mUsageStatsManager.queryEvents(beginTime, now);
-        mAdapter.update(events);
+        UsageEvents events = mUsageStatsManager.queryEvents(mLastTime, now);
+        long lastEventTime = mAdapter.update(events);
+        if (lastEventTime >= 0) {
+            mLastTime = lastEventTime + 1;
+        }
         mHandler.postDelayed(this, 1000 * 5);
     }
 
     private class Adapter extends BaseAdapter {
+        private static final int MAX_EVENTS = 50;
+        private final CircularArray<UsageEvents.Event> mEvents = new CircularArray<>(MAX_EVENTS);
 
-        private final ArrayList<UsageEvents.Event> mEvents = new ArrayList<>();
-
-        public void update(UsageEvents results) {
-            mEvents.clear();
+        public long update(UsageEvents results) {
+            long lastTimeStamp = -1;
             while (results.hasNextEvent()) {
                 UsageEvents.Event event = new UsageEvents.Event();
                 results.getNextEvent(event);
-                mEvents.add(event);
+                lastTimeStamp = event.getTimeStamp();
+                if (mEvents.size() == MAX_EVENTS) {
+                    mEvents.popLast();
+                }
+                mEvents.addFirst(event);
             }
             notifyDataSetChanged();
+            return lastTimeStamp;
         }
 
         @Override
@@ -85,7 +96,7 @@
         }
 
         @Override
-        public Object getItem(int position) {
+        public UsageEvents.Event getItem(int position) {
             return mEvents.get(position);
         }
 
@@ -95,41 +106,72 @@
         }
 
         @Override
+        public int getItemViewType(int position) {
+            final int eventType = getItem(position).getEventType();
+            if (eventType == UsageEvents.Event.CONFIGURATION_CHANGE) {
+                return 1;
+            }
+            return 0;
+        }
+
+        @Override
         public View getView(int position, View convertView, ViewGroup parent) {
+            final UsageEvents.Event event = getItem(position);
+
             final ViewHolder holder;
             if (convertView == null) {
-                convertView = LayoutInflater.from(UsageLogActivity.this)
-                        .inflate(R.layout.row_item, parent, false);
                 holder = new ViewHolder();
-                holder.packageName = (TextView) convertView.findViewById(android.R.id.text1);
-                holder.state = (TextView) convertView.findViewById(android.R.id.text2);
+
+                if (event.getEventType() == UsageEvents.Event.CONFIGURATION_CHANGE) {
+                    convertView = LayoutInflater.from(UsageLogActivity.this)
+                            .inflate(R.layout.config_row_item, parent, false);
+                    holder.config = (TextView) convertView.findViewById(android.R.id.text1);
+                } else {
+                    convertView = LayoutInflater.from(UsageLogActivity.this)
+                            .inflate(R.layout.row_item, parent, false);
+                    holder.packageName = (TextView) convertView.findViewById(android.R.id.text1);
+                    holder.state = (TextView) convertView.findViewById(android.R.id.text2);
+                }
                 convertView.setTag(holder);
             } else {
                 holder = (ViewHolder) convertView.getTag();
             }
 
-            holder.packageName.setText(mEvents.get(position).getPackageName());
-            String state;
-            switch (mEvents.get(position).getEventType()) {
+            if (holder.packageName != null) {
+                holder.packageName.setText(event.getPackageName());
+            }
+
+            if (holder.state != null) {
+                holder.state.setText(eventToString(event.getEventType()));
+            }
+
+            if (holder.config != null &&
+                    event.getEventType() == UsageEvents.Event.CONFIGURATION_CHANGE) {
+                holder.config.setText(event.getConfiguration().toString());
+            }
+            return convertView;
+        }
+
+        private String eventToString(int eventType) {
+            switch (eventType) {
                 case UsageEvents.Event.MOVE_TO_FOREGROUND:
-                    state = "Foreground";
-                    break;
+                    return "Foreground";
 
                 case UsageEvents.Event.MOVE_TO_BACKGROUND:
-                    state = "Background";
-                    break;
+                    return "Background";
+
+                case UsageEvents.Event.CONFIGURATION_CHANGE:
+                    return "Config change";
 
                 default:
-                    state = "Unknown: " + mEvents.get(position).getEventType();
-                    break;
+                    return "Unknown: " + eventType;
             }
-            holder.state.setText(state);
-            return convertView;
         }
     }
 
     static class ViewHolder {
         public TextView packageName;
         public TextView state;
+        public TextView config;
     }
 }
diff --git a/wifi/java/android/net/wifi/WifiManager.java b/wifi/java/android/net/wifi/WifiManager.java
index 74f2f65..1393bce 100644
--- a/wifi/java/android/net/wifi/WifiManager.java
+++ b/wifi/java/android/net/wifi/WifiManager.java
@@ -1000,6 +1000,7 @@
     }
 
     /** @hide */
+    @SystemApi
     public boolean startScan(WorkSource workSource) {
         try {
             mService.startScan(null, workSource);
@@ -1073,6 +1074,7 @@
      * @return false if not supported.
      * @hide
      */
+    @SystemApi
     public boolean isBatchedScanSupported() {
         try {
             return mService.isBatchedScanSupported();
@@ -1099,6 +1101,7 @@
      * {@link BATCHED_SCAN_RESULTS_AVAILABLE_ACTION} is received.
      * @hide
      */
+    @SystemApi
     public List<BatchedScanResult> getBatchedScanResults() {
         try {
             return mService.getBatchedScanResults(mContext.getOpPackageName());