Merge "Fixed bug with wrong task bounds when device is rotated 180°"
diff --git a/api/current.txt b/api/current.txt
index 358d4d5..05c40d1 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -38229,7 +38229,8 @@
     ctor public SuggestionSpan(android.os.Parcel);
     method public int describeContents();
     method public int getFlags();
-    method public java.lang.String getLocale();
+    method public deprecated java.lang.String getLocale();
+    method public java.util.Locale getLocaleObject();
     method public int getSpanTypeId();
     method public java.lang.String[] getSuggestions();
     method public void setFlags(int);
diff --git a/api/system-current.txt b/api/system-current.txt
index 9b66945..fb47833 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -40588,7 +40588,8 @@
     ctor public SuggestionSpan(android.os.Parcel);
     method public int describeContents();
     method public int getFlags();
-    method public java.lang.String getLocale();
+    method public deprecated java.lang.String getLocale();
+    method public java.util.Locale getLocaleObject();
     method public int getSpanTypeId();
     method public java.lang.String[] getSuggestions();
     method public void setFlags(int);
diff --git a/api/test-current.txt b/api/test-current.txt
index 41a77b3..3fb9b5f 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -38245,7 +38245,8 @@
     ctor public SuggestionSpan(android.os.Parcel);
     method public int describeContents();
     method public int getFlags();
-    method public java.lang.String getLocale();
+    method public deprecated java.lang.String getLocale();
+    method public java.util.Locale getLocaleObject();
     method public int getSpanTypeId();
     method public java.lang.String[] getSuggestions();
     method public void setFlags(int);
diff --git a/core/java/android/animation/ValueAnimator.java b/core/java/android/animation/ValueAnimator.java
index 7f9a5d3..e721de9 100644
--- a/core/java/android/animation/ValueAnimator.java
+++ b/core/java/android/animation/ValueAnimator.java
@@ -17,6 +17,7 @@
 package android.animation;
 
 import android.annotation.CallSuper;
+import android.annotation.IntDef;
 import android.os.Looper;
 import android.os.Trace;
 import android.util.AndroidRuntimeException;
@@ -25,6 +26,8 @@
 import android.view.animation.AnimationUtils;
 import android.view.animation.LinearInterpolator;
 
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
 import java.util.ArrayList;
 import java.util.HashMap;
 
@@ -234,6 +237,11 @@
      * Public constants
      */
 
+    /** @hide */
+    @IntDef({RESTART, REVERSE})
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface RepeatMode {}
+
     /**
      * When the animation reaches the end and <code>repeatCount</code> is INFINITE
      * or a positive value, the animation restarts from the beginning.
@@ -807,7 +815,7 @@
      *
      * @param value {@link #RESTART} or {@link #REVERSE}
      */
-    public void setRepeatMode(int value) {
+    public void setRepeatMode(@RepeatMode int value) {
         mRepeatMode = value;
     }
 
@@ -816,6 +824,7 @@
      *
      * @return either one of {@link #REVERSE} or {@link #RESTART}
      */
+    @RepeatMode
     public int getRepeatMode() {
         return mRepeatMode;
     }
diff --git a/core/java/android/app/ActivityManagerNative.java b/core/java/android/app/ActivityManagerNative.java
index 624131e..94b4e7f 100644
--- a/core/java/android/app/ActivityManagerNative.java
+++ b/core/java/android/app/ActivityManagerNative.java
@@ -2842,6 +2842,14 @@
             reply.writeNoException();
             return true;
         }
+        case IS_APP_FOREGROUND_TRANSACTION: {
+            data.enforceInterface(IActivityManager.descriptor);
+            final int userHandle = data.readInt();
+            final boolean isForeground = isAppForeground(userHandle);
+            reply.writeNoException();
+            reply.writeInt(isForeground ? 1 : 0);
+            return true;
+        }
         }
 
         return super.onTransact(code, data, reply, flags);
@@ -6639,5 +6647,18 @@
         reply.recycle();
     }
 
+    @Override
+    public boolean isAppForeground(int uid) throws RemoteException {
+        Parcel data = Parcel.obtain();
+        Parcel reply = Parcel.obtain();
+        data.writeInterfaceToken(IActivityManager.descriptor);
+        data.writeInt(uid);
+        mRemote.transact(IS_APP_FOREGROUND_TRANSACTION, data, reply, 0);
+        final boolean isForeground = reply.readInt() == 1 ? true : false;
+        data.recycle();
+        reply.recycle();
+        return isForeground;
+    };
+
     private IBinder mRemote;
 }
diff --git a/core/java/android/app/IActivityManager.java b/core/java/android/app/IActivityManager.java
index 1ae91a6..10885f2 100644
--- a/core/java/android/app/IActivityManager.java
+++ b/core/java/android/app/IActivityManager.java
@@ -589,6 +589,8 @@
 
     public void setVrMode(IBinder token, boolean enabled) throws RemoteException;
 
+    public boolean isAppForeground(int uid) throws RemoteException;
+
     /*
      * Private non-Binder interfaces
      */
@@ -960,4 +962,5 @@
     int SET_VR_MODE_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION + 359;
     int GET_GRANTED_URI_PERMISSIONS_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION + 360;
     int CLEAR_GRANTED_URI_PERMISSIONS_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION + 361;
+    int IS_APP_FOREGROUND_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION + 362;
 }
diff --git a/core/java/android/app/UiAutomationConnection.java b/core/java/android/app/UiAutomationConnection.java
index 13e27e2..bd10267 100644
--- a/core/java/android/app/UiAutomationConnection.java
+++ b/core/java/android/app/UiAutomationConnection.java
@@ -28,6 +28,7 @@
 import android.os.Process;
 import android.os.RemoteException;
 import android.os.ServiceManager;
+import android.os.UserHandle;
 import android.view.IWindowManager;
 import android.view.InputEvent;
 import android.view.SurfaceControl;
@@ -167,9 +168,10 @@
             throwIfShutdownLocked();
             throwIfNotConnectedLocked();
         }
+        int callingUserId = UserHandle.getCallingUserId();
         final long identity = Binder.clearCallingIdentity();
         try {
-            IBinder token = mAccessibilityManager.getWindowToken(windowId);
+            IBinder token = mAccessibilityManager.getWindowToken(windowId, callingUserId);
             if (token == null) {
                 return false;
             }
@@ -186,9 +188,10 @@
             throwIfShutdownLocked();
             throwIfNotConnectedLocked();
         }
+        int callingUserId = UserHandle.getCallingUserId();
         final long identity = Binder.clearCallingIdentity();
         try {
-            IBinder token = mAccessibilityManager.getWindowToken(windowId);
+            IBinder token = mAccessibilityManager.getWindowToken(windowId, callingUserId);
             if (token == null) {
                 return null;
             }
diff --git a/core/java/android/app/UiModeManager.java b/core/java/android/app/UiModeManager.java
index 4416415..56b4249 100644
--- a/core/java/android/app/UiModeManager.java
+++ b/core/java/android/app/UiModeManager.java
@@ -16,12 +16,16 @@
 
 package android.app;
 
+import android.annotation.IntDef;
 import android.content.Context;
 import android.content.res.Configuration;
 import android.os.RemoteException;
 import android.os.ServiceManager;
 import android.util.Log;
 
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
 /**
  * This class provides access to the system uimode services.  These services
  * allow applications to control UI modes of the device.
@@ -92,18 +96,26 @@
      * when the user exits desk mode.
      */
     public static String ACTION_EXIT_DESK_MODE = "android.app.action.EXIT_DESK_MODE";
-    
-    /** Constant for {@link #setNightMode(int)} and {@link #getNightMode()}:
+
+    /** @hide */
+    @IntDef({MODE_NIGHT_AUTO, MODE_NIGHT_NO, MODE_NIGHT_YES})
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface NightMode {}
+
+    /**
+     * Constant for {@link #setNightMode(int)} and {@link #getNightMode()}:
      * automatically switch night mode on and off based on the time.
      */
     public static final int MODE_NIGHT_AUTO = Configuration.UI_MODE_NIGHT_UNDEFINED >> 4;
     
-    /** Constant for {@link #setNightMode(int)} and {@link #getNightMode()}:
+    /**
+     * Constant for {@link #setNightMode(int)} and {@link #getNightMode()}:
      * never run in night mode.
      */
     public static final int MODE_NIGHT_NO = Configuration.UI_MODE_NIGHT_NO >> 4;
     
-    /** Constant for {@link #setNightMode(int)} and {@link #getNightMode()}:
+    /**
+     * Constant for {@link #setNightMode(int)} and {@link #getNightMode()}:
      * always run in night mode.
      */
     public static final int MODE_NIGHT_YES = Configuration.UI_MODE_NIGHT_YES >> 4;
@@ -195,20 +207,28 @@
     }
 
     /**
-     * Sets the night mode.  Changes to the night mode are only effective when
-     * the car or desk mode is enabled on a device.
-     *
-     * <p>The mode can be one of:
+     * Sets the night mode.
+     * <p>
+     * The mode can be one of:
      * <ul>
-     *   <li><em>{@link #MODE_NIGHT_NO}<em> - sets the device into notnight
-     *       mode.</li>
-     *   <li><em>{@link #MODE_NIGHT_YES}</em> - sets the device into night mode.
-     *   </li>
-     *   <li><em>{@link #MODE_NIGHT_AUTO}</em> - automatic night/notnight switching
-     *       depending on the location and certain other sensors.</li>
+     *   <li><em>{@link #MODE_NIGHT_NO}<em> sets the device into
+     *       {@code notnight} mode</li>
+     *   <li><em>{@link #MODE_NIGHT_YES}</em> sets the device into
+     *       {@code night} mode</li>
+     *   <li><em>{@link #MODE_NIGHT_AUTO}</em> automatically switches between
+     *       {@code night} and {@code notnight} based on the device's current
+     *       location and certain other sensors</li>
      * </ul>
+     * <p>
+     * <strong>Note:</strong> On API 22 and below, changes to the night mode
+     * are only effective when the {@link Configuration#UI_MODE_TYPE_CAR car}
+     * or {@link Configuration#UI_MODE_TYPE_DESK desk} mode is enabled on a
+     * device. Starting in API 23, changes to night mode are always effective.
+     *
+     * @param mode the night mode to set
+     * @see #getNightMode()
      */
-    public void setNightMode(int mode) {
+    public void setNightMode(@NightMode int mode) {
         if (mService != null) {
             try {
                 mService.setNightMode(mode);
@@ -219,11 +239,20 @@
     }
 
     /**
-     * @return the currently configured night mode. May be one of
-     *         {@link #MODE_NIGHT_NO}, {@link #MODE_NIGHT_YES},
-     *         {@link #MODE_NIGHT_AUTO}, or -1 on error.
+     * Returns the currently configured night mode.
+     * <p>
+     * May be one of:
+     * <ul>
+     *   <li>{@link #MODE_NIGHT_NO}</li>
+     *   <li>{@link #MODE_NIGHT_YES}</li>
+     *   <li>{@link #MODE_NIGHT_AUTO}</li>
+     *   <li>{@code -1} on error</li>
+     * </ul>
+     *
+     * @return the current night mode, or {@code -1} on error
+     * @see #setNightMode(int)
      */
-    public int getNightMode() {
+    public @NightMode int getNightMode() {
         if (mService != null) {
             try {
                 return mService.getNightMode();
@@ -250,9 +279,13 @@
     }
 
     /**
-     * @return If Night mode is locked or not. When Night mode is locked, changing Night mode
-     *         is only allowed to privileged system components and normal application's call
-     *         to change Night mode using {@link #setNightMode(int)} will silently fail.
+     * Returns whether night mode is locked or not.
+     * <p>
+     * When night mode is locked, only privileged system components may change
+     * night mode and calls from non-privileged applications to change night
+     * mode will fail silently.
+     *
+     * @return {@code true} if night mode is locked or {@code false} otherwise
      */
     public boolean isNightModeLocked() {
         if (mService != null) {
diff --git a/core/java/android/text/style/SuggestionSpan.java b/core/java/android/text/style/SuggestionSpan.java
index 6b449f9..1b00db2 100644
--- a/core/java/android/text/style/SuggestionSpan.java
+++ b/core/java/android/text/style/SuggestionSpan.java
@@ -16,6 +16,8 @@
 
 package android.text.style;
 
+import android.annotation.NonNull;
+import android.annotation.Nullable;
 import android.content.Context;
 import android.content.Intent;
 import android.content.res.TypedArray;
@@ -84,7 +86,15 @@
 
     private int mFlags;
     private final String[] mSuggestions;
-    private final String mLocaleString;
+    /**
+     * Kept for compatibility for apps that rely on invalid locale strings e.g.
+     * {@code new Locale(" an ", " i n v a l i d ", "data")}, which cannot be handled by
+     * {@link #mLanguageTag}.
+     */
+    @NonNull
+    private final String mLocaleStringForCompatibility;
+    @NonNull
+    private final String mLanguageTag;
     private final String mNotificationTargetClassName;
     private final String mNotificationTargetPackageName;
     private final int mHashCode;
@@ -130,14 +140,18 @@
         final int N = Math.min(SUGGESTIONS_MAX_SIZE, suggestions.length);
         mSuggestions = Arrays.copyOf(suggestions, N);
         mFlags = flags;
+        final Locale sourceLocale;
         if (locale != null) {
-            mLocaleString = locale.toString();
+            sourceLocale = locale;
         } else if (context != null) {
-            mLocaleString = context.getResources().getConfiguration().locale.toString();
+            // TODO: Consider to context.getResources().getResolvedLocale() instead.
+            sourceLocale = context.getResources().getConfiguration().locale;
         } else {
             Log.e("SuggestionSpan", "No locale or context specified in SuggestionSpan constructor");
-            mLocaleString = "";
+            sourceLocale = null;
         }
+        mLocaleStringForCompatibility = sourceLocale == null ? "" : sourceLocale.toString();
+        mLanguageTag = sourceLocale == null ? "" : sourceLocale.toLanguageTag();
 
         if (context != null) {
             mNotificationTargetPackageName = context.getPackageName();
@@ -150,7 +164,8 @@
         } else {
             mNotificationTargetClassName = "";
         }
-        mHashCode = hashCodeInternal(mSuggestions, mLocaleString, mNotificationTargetClassName);
+        mHashCode = hashCodeInternal(mSuggestions, mLanguageTag, mLocaleStringForCompatibility,
+                mNotificationTargetClassName);
 
         initStyle(context);
     }
@@ -194,7 +209,8 @@
     public SuggestionSpan(Parcel src) {
         mSuggestions = src.readStringArray();
         mFlags = src.readInt();
-        mLocaleString = src.readString();
+        mLocaleStringForCompatibility = src.readString();
+        mLanguageTag = src.readString();
         mNotificationTargetClassName = src.readString();
         mNotificationTargetPackageName = src.readString();
         mHashCode = src.readInt();
@@ -214,10 +230,29 @@
     }
 
     /**
-     * @return the locale of the suggestions
+     * @deprecated use {@link #getLocaleObject()} instead.
+     * @return the locale of the suggestions. An empty string is returned if no locale is specified.
      */
+    @NonNull
+    @Deprecated
     public String getLocale() {
-        return mLocaleString;
+        return mLocaleStringForCompatibility;
+    }
+
+    /**
+     * Returns a well-formed BCP 47 language tag representation of the suggestions, as a
+     * {@link Locale} object.
+     *
+     * <p><b>Caveat</b>: The returned object is guaranteed to be a  a well-formed BCP 47 language tag
+     * representation.  For example, this method can return an empty locale rather than returning a
+     * malformed data when this object is initialized with an malformed {@link Locale} object, e.g.
+     * {@code new Locale(" a ", " b c d ", " "}.</p>
+     *
+     * @return the locale of the suggestions. {@code null} is returned if no locale is specified.
+     */
+    @Nullable
+    public Locale getLocaleObject() {
+        return mLanguageTag.isEmpty() ? null : Locale.forLanguageTag(mLanguageTag);
     }
 
     /**
@@ -255,7 +290,8 @@
     public void writeToParcelInternal(Parcel dest, int flags) {
         dest.writeStringArray(mSuggestions);
         dest.writeInt(mFlags);
-        dest.writeString(mLocaleString);
+        dest.writeString(mLocaleStringForCompatibility);
+        dest.writeString(mLanguageTag);
         dest.writeString(mNotificationTargetClassName);
         dest.writeString(mNotificationTargetPackageName);
         dest.writeInt(mHashCode);
@@ -290,10 +326,10 @@
         return mHashCode;
     }
 
-    private static int hashCodeInternal(String[] suggestions, String locale,
-            String notificationTargetClassName) {
+    private static int hashCodeInternal(String[] suggestions, @NonNull String languageTag,
+            @NonNull String localeStringForCompatibility, String notificationTargetClassName) {
         return Arrays.hashCode(new Object[] {Long.valueOf(SystemClock.uptimeMillis()), suggestions,
-                locale, notificationTargetClassName});
+                languageTag, localeStringForCompatibility, notificationTargetClassName});
     }
 
     public static final Parcelable.Creator<SuggestionSpan> CREATOR =
diff --git a/core/java/android/transition/SidePropagation.java b/core/java/android/transition/SidePropagation.java
index b10f6a0..817541c 100644
--- a/core/java/android/transition/SidePropagation.java
+++ b/core/java/android/transition/SidePropagation.java
@@ -16,6 +16,7 @@
 package android.transition;
 
 import android.graphics.Rect;
+import android.transition.Slide.GravityFlag;
 import android.view.Gravity;
 import android.view.View;
 import android.view.ViewGroup;
@@ -45,7 +46,7 @@
      *             {@link Gravity#LEFT}, {@link Gravity#TOP}, {@link Gravity#RIGHT},
      *             {@link Gravity#BOTTOM}, {@link Gravity#START}, or {@link Gravity#END}.
      */
-    public void setSide(int side) {
+    public void setSide(@GravityFlag int side) {
         mSide = side;
     }
 
diff --git a/core/java/android/transition/Slide.java b/core/java/android/transition/Slide.java
index 9063b43..9af65e4 100644
--- a/core/java/android/transition/Slide.java
+++ b/core/java/android/transition/Slide.java
@@ -17,6 +17,7 @@
 
 import android.animation.Animator;
 import android.animation.TimeInterpolator;
+import android.annotation.IntDef;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.util.AttributeSet;
@@ -27,6 +28,9 @@
 import android.view.animation.DecelerateInterpolator;
 import com.android.internal.R;
 
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
 /**
  * This transition tracks changes to the visibility of target views in the
  * start and end scenes and moves views in or out from one of the edges of the
@@ -42,7 +46,12 @@
     private static final TimeInterpolator sAccelerate = new AccelerateInterpolator();
     private static final String PROPNAME_SCREEN_POSITION = "android:slide:screenPosition";
     private CalculateSlide mSlideCalculator = sCalculateBottom;
-    private int mSlideEdge = Gravity.BOTTOM;
+    private @GravityFlag int mSlideEdge = Gravity.BOTTOM;
+
+    /** @hide */
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef({Gravity.LEFT, Gravity.TOP, Gravity.RIGHT, Gravity.BOTTOM, Gravity.START, Gravity.END})
+    public @interface GravityFlag {}
 
     private interface CalculateSlide {
 
@@ -176,7 +185,7 @@
      *                  {@link android.view.Gravity#START}, {@link android.view.Gravity#END}.
      * @attr ref android.R.styleable#Slide_slideEdge
      */
-    public void setSlideEdge(int slideEdge) {
+    public void setSlideEdge(@GravityFlag int slideEdge) {
         switch (slideEdge) {
             case Gravity.LEFT:
                 mSlideCalculator = sCalculateLeft;
@@ -214,6 +223,7 @@
      *         {@link android.view.Gravity#START}, {@link android.view.Gravity#END}.
      * @attr ref android.R.styleable#Slide_slideEdge
      */
+    @GravityFlag
     public int getSlideEdge() {
         return mSlideEdge;
     }
diff --git a/core/java/android/transition/Visibility.java b/core/java/android/transition/Visibility.java
index e711812..eb95a02 100644
--- a/core/java/android/transition/Visibility.java
+++ b/core/java/android/transition/Visibility.java
@@ -16,17 +16,21 @@
 
 package android.transition;
 
-import com.android.internal.R;
-
 import android.animation.Animator;
 import android.animation.Animator.AnimatorListener;
 import android.animation.Animator.AnimatorPauseListener;
+import android.annotation.IntDef;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.util.AttributeSet;
 import android.view.View;
 import android.view.ViewGroup;
 
+import com.android.internal.R;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
 /**
  * This transition tracks changes to the visibility of target views in the
  * start and end scenes. Visibility is determined not just by the
@@ -46,6 +50,11 @@
     private static final String PROPNAME_PARENT = "android:visibility:parent";
     private static final String PROPNAME_SCREEN_LOCATION = "android:visibility:screenLocation";
 
+    /** @hide */
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef(flag=true, value={MODE_IN, MODE_OUT})
+    @interface VisibilityMode {}
+
     /**
      * Mode used in {@link #setMode(int)} to make the transition
      * operate on targets that are appearing. Maybe be combined with
@@ -99,7 +108,7 @@
      *             {@link #MODE_IN} and {@link #MODE_OUT}.
      * @attr ref android.R.styleable#VisibilityTransition_transitionVisibilityMode
      */
-    public void setMode(int mode) {
+    public void setMode(@VisibilityMode int mode) {
         if ((mode & ~(MODE_IN | MODE_OUT)) != 0) {
             throw new IllegalArgumentException("Only MODE_IN and MODE_OUT flags are allowed");
         }
@@ -113,6 +122,7 @@
      *         {@link #MODE_IN} and {@link #MODE_OUT}.
      * @attr ref android.R.styleable#VisibilityTransition_transitionVisibilityMode
      */
+    @VisibilityMode
     public int getMode() {
         return mMode;
     }
diff --git a/core/java/android/view/accessibility/IAccessibilityManager.aidl b/core/java/android/view/accessibility/IAccessibilityManager.aidl
index b6570cc..9e79057 100644
--- a/core/java/android/view/accessibility/IAccessibilityManager.aidl
+++ b/core/java/android/view/accessibility/IAccessibilityManager.aidl
@@ -58,5 +58,5 @@
     void temporaryEnableAccessibilityStateUntilKeyguardRemoved(in ComponentName service,
             boolean touchExplorationEnabled);
 
-    IBinder getWindowToken(int windowId);
+    IBinder getWindowToken(int windowId, int userId);
 }
diff --git a/core/java/android/widget/CalendarView.java b/core/java/android/widget/CalendarView.java
index 2aaa356..cde7604 100644
--- a/core/java/android/widget/CalendarView.java
+++ b/core/java/android/widget/CalendarView.java
@@ -16,8 +16,11 @@
 
 package android.widget;
 
+import android.annotation.AttrRes;
 import android.annotation.ColorInt;
 import android.annotation.DrawableRes;
+import android.annotation.NonNull;
+import android.annotation.Nullable;
 import android.annotation.StyleRes;
 import android.annotation.Widget;
 import android.content.Context;
@@ -37,9 +40,13 @@
 import java.util.TimeZone;
 
 /**
- * This class is a calendar widget for displaying and selecting dates. The range
- * of dates supported by this calendar is configurable. A user can select a date
- * by taping on it and can scroll and fling the calendar to a desired date.
+ * This class is a calendar widget for displaying and selecting dates. The
+ * range of dates supported by this calendar is configurable.
+ * <p>
+ * The exact appearance and interaction model of this widget may vary between
+ * OS versions and themes (e.g. Holo versus Material), but in general a user
+ * can select a date by tapping on it and can scroll or fling the calendar to a
+ * desired date.
  *
  * @attr ref android.R.styleable#CalendarView_showWeekNumber
  * @attr ref android.R.styleable#CalendarView_firstDayOfWeek
@@ -77,22 +84,24 @@
          * @param month The month that was set [0-11].
          * @param dayOfMonth The day of the month that was set.
          */
-        public void onSelectedDayChange(CalendarView view, int year, int month, int dayOfMonth);
+        void onSelectedDayChange(@NonNull CalendarView view, int year, int month, int dayOfMonth);
     }
 
-    public CalendarView(Context context) {
+    public CalendarView(@NonNull Context context) {
         this(context, null);
     }
 
-    public CalendarView(Context context, AttributeSet attrs) {
+    public CalendarView(@NonNull Context context, @Nullable AttributeSet attrs) {
         this(context, attrs, R.attr.calendarViewStyle);
     }
 
-    public CalendarView(Context context, AttributeSet attrs, int defStyleAttr) {
+    public CalendarView(@NonNull Context context, @Nullable AttributeSet attrs,
+            @AttrRes int defStyleAttr) {
         this(context, attrs, defStyleAttr, 0);
     }
 
-    public CalendarView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
+    public CalendarView(@NonNull Context context, @Nullable AttributeSet attrs,
+            @AttrRes int defStyleAttr, @StyleRes int defStyleRes) {
         super(context, attrs, defStyleAttr, defStyleRes);
 
         final TypedArray a = context.obtainStyledAttributes(
@@ -322,7 +331,7 @@
      *
      * @attr ref android.R.styleable#CalendarView_weekDayTextAppearance
      */
-    public void setWeekDayTextAppearance(int resourceId) {
+    public void setWeekDayTextAppearance(@StyleRes int resourceId) {
         mDelegate.setWeekDayTextAppearance(resourceId);
     }
 
@@ -333,7 +342,7 @@
      *
      * @attr ref android.R.styleable#CalendarView_weekDayTextAppearance
      */
-    public int getWeekDayTextAppearance() {
+    public @StyleRes int getWeekDayTextAppearance() {
         return mDelegate.getWeekDayTextAppearance();
     }
 
@@ -344,7 +353,7 @@
      *
      * @attr ref android.R.styleable#CalendarView_dateTextAppearance
      */
-    public void setDateTextAppearance(int resourceId) {
+    public void setDateTextAppearance(@StyleRes int resourceId) {
         mDelegate.setDateTextAppearance(resourceId);
     }
 
@@ -355,7 +364,7 @@
      *
      * @attr ref android.R.styleable#CalendarView_dateTextAppearance
      */
-    public int getDateTextAppearance() {
+    public @StyleRes int getDateTextAppearance() {
         return mDelegate.getDateTextAppearance();
     }
 
@@ -552,36 +561,29 @@
         int getShownWeekCount();
 
         void setSelectedWeekBackgroundColor(@ColorInt int color);
-        @ColorInt
-        int getSelectedWeekBackgroundColor();
+        @ColorInt int getSelectedWeekBackgroundColor();
 
         void setFocusedMonthDateColor(@ColorInt int color);
-        @ColorInt
-        int getFocusedMonthDateColor();
+        @ColorInt int getFocusedMonthDateColor();
 
         void setUnfocusedMonthDateColor(@ColorInt int color);
-        @ColorInt
-        int getUnfocusedMonthDateColor();
+        @ColorInt int getUnfocusedMonthDateColor();
 
         void setWeekNumberColor(@ColorInt int color);
-        @ColorInt
-        int getWeekNumberColor();
+        @ColorInt int getWeekNumberColor();
 
         void setWeekSeparatorLineColor(@ColorInt int color);
-        @ColorInt
-        int getWeekSeparatorLineColor();
+        @ColorInt int getWeekSeparatorLineColor();
 
         void setSelectedDateVerticalBar(@DrawableRes int resourceId);
         void setSelectedDateVerticalBar(Drawable drawable);
         Drawable getSelectedDateVerticalBar();
 
         void setWeekDayTextAppearance(@StyleRes int resourceId);
-        @StyleRes
-        int getWeekDayTextAppearance();
+        @StyleRes int getWeekDayTextAppearance();
 
         void setDateTextAppearance(@StyleRes int resourceId);
-        @StyleRes
-        int getDateTextAppearance();
+        @StyleRes int getDateTextAppearance();
 
         void setMinDate(long minDate);
         long getMinDate();
diff --git a/core/java/android/widget/Toolbar.java b/core/java/android/widget/Toolbar.java
index 8e711b0..06daf61 100644
--- a/core/java/android/widget/Toolbar.java
+++ b/core/java/android/widget/Toolbar.java
@@ -1946,6 +1946,9 @@
     public void setMenuCallbacks(MenuPresenter.Callback pcb, MenuBuilder.Callback mcb) {
         mActionMenuPresenterCallback = pcb;
         mMenuBuilderCallback = mcb;
+        if (mMenuView != null) {
+            mMenuView.setMenuCallbacks(pcb, mcb);
+        }
     }
 
     /**
diff --git a/graphics/java/android/graphics/drawable/RotateDrawable.java b/graphics/java/android/graphics/drawable/RotateDrawable.java
index 78424e3..c0dfe77 100644
--- a/graphics/java/android/graphics/drawable/RotateDrawable.java
+++ b/graphics/java/android/graphics/drawable/RotateDrawable.java
@@ -204,11 +204,13 @@
 
     /**
      * Sets the X position around which the drawable is rotated.
+     * <p>
+     * If the X pivot is relative (as specified by
+     * {@link #setPivotXRelative(boolean)}), then the position represents a
+     * fraction of the drawable width. Otherwise, the position represents an
+     * absolute value in pixels.
      *
-     * @param pivotX X position around which to rotate. If the X pivot is
-     *            relative, the position represents a fraction of the drawable
-     *            width. Otherwise, the position represents an absolute value in
-     *            pixels.
+     * @param pivotX X position around which to rotate
      * @see #setPivotXRelative(boolean)
      * @attr ref android.R.styleable#RotateDrawable_pivotX
      */
@@ -254,11 +256,13 @@
 
     /**
      * Sets the Y position around which the drawable is rotated.
+     * <p>
+     * If the Y pivot is relative (as specified by
+     * {@link #setPivotYRelative(boolean)}), then the position represents a
+     * fraction of the drawable height. Otherwise, the position represents an
+     * absolute value in pixels.
      *
-     * @param pivotY Y position around which to rotate. If the Y pivot is
-     *            relative, the position represents a fraction of the drawable
-     *            height. Otherwise, the position represents an absolute value
-     *            in pixels.
+     * @param pivotY Y position around which to rotate
      * @see #getPivotY()
      * @attr ref android.R.styleable#RotateDrawable_pivotY
      */
diff --git a/libs/hwui/renderthread/RenderProxy.cpp b/libs/hwui/renderthread/RenderProxy.cpp
index 43282c9..72c7e4e 100644
--- a/libs/hwui/renderthread/RenderProxy.cpp
+++ b/libs/hwui/renderthread/RenderProxy.cpp
@@ -450,6 +450,11 @@
     } else {
         fprintf(file, "\nNo caches instance.\n");
     }
+#if HWUI_NEW_OPS
+    fprintf(file, "\nPipeline=FrameBuilder\n");
+#else
+    fprintf(file, "\nPipeline=OpenGLRenderer\n");
+#endif
     fflush(file);
     return nullptr;
 }
diff --git a/libs/hwui/utils/TestWindowContext.cpp b/libs/hwui/utils/TestWindowContext.cpp
index 05b4a72..dcc4946 100644
--- a/libs/hwui/utils/TestWindowContext.cpp
+++ b/libs/hwui/utils/TestWindowContext.cpp
@@ -18,6 +18,7 @@
 #include "AnimationContext.h"
 #include "DisplayListCanvas.h"
 #include "IContextFactory.h"
+#include "RecordingCanvas.h"
 #include "RenderNode.h"
 #include "SkTypes.h"
 #include "gui/BufferQueue.h"
@@ -88,9 +89,11 @@
         mProxy->setup(mSize.width(), mSize.height(), 800.0f,
                              255 * 0.075f, 255 * 0.15f);
         mProxy->setLightCenter(lightVector);
-        mCanvas.reset(new
-            android::uirenderer::DisplayListCanvas(mSize.width(),
-                                                   mSize.height()));
+#if HWUI_NEW_OPS
+        mCanvas.reset(new android::uirenderer::RecordingCanvas(mSize.width(), mSize.height()));
+#else
+        mCanvas.reset(new android::uirenderer::DisplayListCanvas(mSize.width(), mSize.height()));
+#endif
     }
 
     SkCanvas* prepareToDraw() {
@@ -168,7 +171,11 @@
 
     std::unique_ptr<android::uirenderer::RenderNode> mRootNode;
     std::unique_ptr<android::uirenderer::renderthread::RenderProxy> mProxy;
+#if HWUI_NEW_OPS
+    std::unique_ptr<android::uirenderer::RecordingCanvas> mCanvas;
+#else
     std::unique_ptr<android::uirenderer::DisplayListCanvas> mCanvas;
+#endif
     android::sp<android::IGraphicBufferProducer> mProducer;
     android::sp<android::IGraphicBufferConsumer> mConsumer;
     android::sp<android::CpuConsumer> mCpuConsumer;
diff --git a/media/java/android/media/MediaScanner.java b/media/java/android/media/MediaScanner.java
index 96c616b..dfe024a 100644
--- a/media/java/android/media/MediaScanner.java
+++ b/media/java/android/media/MediaScanner.java
@@ -17,6 +17,7 @@
 package android.media;
 
 import android.content.ContentProviderClient;
+import android.content.ContentResolver;
 import android.content.ContentUris;
 import android.content.ContentValues;
 import android.content.Context;
@@ -37,6 +38,7 @@
 import android.provider.MediaStore.Images;
 import android.provider.MediaStore.Video;
 import android.provider.Settings;
+import android.provider.Settings.SettingNotFoundException;
 import android.sax.Element;
 import android.sax.ElementListener;
 import android.sax.RootElement;
@@ -328,8 +330,6 @@
     // used when scanning the image database so we know whether we have to prune
     // old thumbnail files
     private int mOriginalCount;
-    /** Whether the database had any entries in it before the scan started */
-    private boolean mWasEmptyPriorToScan = false;
     /** Whether the scanner has set a default sound for the ringer ringtone. */
     private boolean mDefaultRingtoneSet;
     /** Whether the scanner has set a default sound for the notification ringtone. */
@@ -562,12 +562,29 @@
                 FileEntry entry = beginFile(path, mimeType, lastModified,
                         fileSize, isDirectory, noMedia);
 
+                if (entry == null) {
+                    return null;
+                }
+
                 // if this file was just inserted via mtp, set the rowid to zero
                 // (even though it already exists in the database), to trigger
                 // the correct code path for updating its entry
                 if (mMtpObjectHandle != 0) {
                     entry.mRowId = 0;
                 }
+
+                if (entry.mPath != null &&
+                        ((!mDefaultNotificationSet &&
+                                doesPathHaveFilename(entry.mPath, mDefaultNotificationFilename))
+                        || (!mDefaultRingtoneSet &&
+                                doesPathHaveFilename(entry.mPath, mDefaultRingtoneFilename))
+                        || (!mDefaultAlarmSet &&
+                                doesPathHaveFilename(entry.mPath, mDefaultAlarmAlertFilename)))) {
+                    Log.w(TAG, "forcing rescan of " + entry.mPath +
+                            "since ringtone setting didn't finish");
+                    scanAlways = true;
+                }
+
                 // rescan for metadata if file was modified since last scan
                 if (entry != null && (entry.mLastModifiedChanged || scanAlways)) {
                     if (noMedia) {
@@ -947,6 +964,26 @@
             }
             Uri result = null;
             boolean needToSetSettings = false;
+            // Setting a flag in order not to use bulk insert for the file related with
+            // notifications, ringtones, and alarms, because the rowId of the inserted file is
+            // needed.
+            if (notifications && !mDefaultNotificationSet) {
+                if (TextUtils.isEmpty(mDefaultNotificationFilename) ||
+                        doesPathHaveFilename(entry.mPath, mDefaultNotificationFilename)) {
+                    needToSetSettings = true;
+                }
+            } else if (ringtones && !mDefaultRingtoneSet) {
+                if (TextUtils.isEmpty(mDefaultRingtoneFilename) ||
+                        doesPathHaveFilename(entry.mPath, mDefaultRingtoneFilename)) {
+                    needToSetSettings = true;
+                }
+            } else if (alarms && !mDefaultAlarmSet) {
+                if (TextUtils.isEmpty(mDefaultAlarmAlertFilename) ||
+                        doesPathHaveFilename(entry.mPath, mDefaultAlarmAlertFilename)) {
+                    needToSetSettings = true;
+                }
+            }
+
             if (rowId == 0) {
                 if (mMtpObjectHandle != 0) {
                     values.put(MediaStore.MediaColumns.MEDIA_SCANNER_NEW_OBJECT_ID, mMtpObjectHandle);
@@ -958,28 +995,6 @@
                     }
                     values.put(Files.FileColumns.FORMAT, format);
                 }
-                // Setting a flag in order not to use bulk insert for the file related with
-                // notifications, ringtones, and alarms, because the rowId of the inserted file is
-                // needed.
-                if (mWasEmptyPriorToScan) {
-                    if (notifications && !mDefaultNotificationSet) {
-                        if (TextUtils.isEmpty(mDefaultNotificationFilename) ||
-                                doesPathHaveFilename(entry.mPath, mDefaultNotificationFilename)) {
-                            needToSetSettings = true;
-                        }
-                    } else if (ringtones && !mDefaultRingtoneSet) {
-                        if (TextUtils.isEmpty(mDefaultRingtoneFilename) ||
-                                doesPathHaveFilename(entry.mPath, mDefaultRingtoneFilename)) {
-                            needToSetSettings = true;
-                        }
-                    } else if (alarms && !mDefaultAlarmSet) {
-                        if (TextUtils.isEmpty(mDefaultAlarmAlertFilename) ||
-                                doesPathHaveFilename(entry.mPath, mDefaultAlarmAlertFilename)) {
-                            needToSetSettings = true;
-                        }
-                    }
-                }
-
                 // New file, insert it.
                 // Directories need to be inserted before the files they contain, so they
                 // get priority when bulk inserting.
@@ -1049,14 +1064,18 @@
 
         private void setSettingIfNotSet(String settingName, Uri uri, long rowId) {
 
-            String existingSettingValue = Settings.System.getString(mContext.getContentResolver(),
-                    settingName);
+            if(wasSettingAlreadySet(settingName)) {
+                return;
+            }
 
+            ContentResolver cr = mContext.getContentResolver();
+            String existingSettingValue = Settings.System.getString(cr, settingName);
             if (TextUtils.isEmpty(existingSettingValue)) {
                 // Set the setting to the given URI
-                Settings.System.putString(mContext.getContentResolver(), settingName,
+                Settings.System.putString(cr, settingName,
                         ContentUris.withAppendedId(uri, rowId).toString());
             }
+            Settings.System.putInt(cr, settingSetIndicatorName(settingName), 1);
         }
 
         private int getFileTypeFromDrm(String path) {
@@ -1083,6 +1102,20 @@
 
     }; // end of anonymous MediaScannerClient instance
 
+    private String settingSetIndicatorName(String base) {
+        return base + "_set";
+    }
+
+    private boolean wasSettingAlreadySet(String name) {
+        ContentResolver cr = mContext.getContentResolver();
+        String indicatorName = settingSetIndicatorName(name);
+        try {
+            return Settings.System.getInt(cr, indicatorName) != 0;
+        } catch (SettingNotFoundException e) {
+            return false;
+        }
+    }
+
     private void prescan(String filePath, boolean prescanFiles) throws RemoteException {
         Cursor c = null;
         String where = null;
@@ -1100,6 +1133,10 @@
             selectionArgs = new String[] { "" };
         }
 
+        mDefaultRingtoneSet = wasSettingAlreadySet(Settings.System.RINGTONE);
+        mDefaultNotificationSet = wasSettingAlreadySet(Settings.System.NOTIFICATION_SOUND);
+        mDefaultAlarmSet = wasSettingAlreadySet(Settings.System.ALARM_ALERT);
+
         // Tell the provider to not delete the file.
         // If the file is truly gone the delete is unnecessary, and we want to avoid
         // accidentally deleting files that are really there (this may happen if the
@@ -1117,7 +1154,6 @@
                 // with CursorWindow positioning.
                 long lastId = Long.MIN_VALUE;
                 Uri limitUri = mFilesUri.buildUpon().appendQueryParameter("limit", "1000").build();
-                mWasEmptyPriorToScan = true;
 
                 while (true) {
                     selectionArgs[0] = "" + lastId;
@@ -1136,7 +1172,6 @@
                     if (num == 0) {
                         break;
                     }
-                    mWasEmptyPriorToScan = false;
                     while (c.moveToNext()) {
                         long rowId = c.getLong(FILES_PRESCAN_ID_COLUMN_INDEX);
                         String path = c.getString(FILES_PRESCAN_PATH_COLUMN_INDEX);
@@ -1284,7 +1319,7 @@
         }
     }
 
-    private void postscan(String[] directories) throws RemoteException {
+    private void postscan(final String[] directories) throws RemoteException {
 
         // handle playlists last, after we know what media files are on the storage.
         if (mProcessPlaylists) {
diff --git a/packages/DocumentsUI/res/drawable/ic_root_home.xml b/packages/DocumentsUI/res/drawable/ic_root_home.xml
index 0a258ac..696ee05 100644
--- a/packages/DocumentsUI/res/drawable/ic_root_home.xml
+++ b/packages/DocumentsUI/res/drawable/ic_root_home.xml
@@ -1,15 +1,24 @@
-<?xml version="1.0" encoding="utf-8"?>
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="24"
-    android:viewportHeight="24">
+<!--
+Copyright (C) 2015 The Android Open Source Project
 
+   Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+         http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
     <path
-        android:fillColor="#000000"
-        android:pathData="M20 6h-8l-2-2H4c-1.1 0-1.99 .9 -1.99 2L2 18c0 1.1 .9 2 2 2h16c1.1 0 2-.9
-2-2V8c0-1.1-.9-2-2-2zm-5 3c1.1 0 2 .9 2 2s-.9 2-2 2-2-.9-2-2 .9-2 2-2zm4
-8h-8v-1c0-1.33 2.67-2 4-2s4 .67 4 2v1z" />
-    <path
-        android:pathData="M0 0h24v24H0z" />
+        android:fillColor="#FF000000"
+        android:pathData="M10 20v-6h4v6h5v-8h3L12 3 2 12h3v8z"/>
 </vector>
diff --git a/packages/SettingsLib/src/com/android/settingslib/RestrictedLockUtils.java b/packages/SettingsLib/src/com/android/settingslib/RestrictedLockUtils.java
index f6caaa9..2706e25 100644
--- a/packages/SettingsLib/src/com/android/settingslib/RestrictedLockUtils.java
+++ b/packages/SettingsLib/src/com/android/settingslib/RestrictedLockUtils.java
@@ -190,18 +190,27 @@
      * Send the intent to trigger the {@link android.settings.ShowAdminSupportDetailsDialog}.
      */
     public static void sendShowAdminSupportDetailsIntent(Context context, EnforcedAdmin admin) {
-        Intent intent = new Intent(Settings.ACTION_SHOW_ADMIN_SUPPORT_DETAILS);
+        final Intent intent = getShowAdminSupportDetailsIntent(context, admin);
         int adminUserId = UserHandle.myUserId();
+        if (admin.userId != UserHandle.USER_NULL) {
+            adminUserId = admin.userId;
+        }
+        context.startActivityAsUser(intent, new UserHandle(adminUserId));
+    }
+
+    public static Intent getShowAdminSupportDetailsIntent(Context context, EnforcedAdmin admin) {
+        final Intent intent = new Intent(Settings.ACTION_SHOW_ADMIN_SUPPORT_DETAILS);
         if (admin != null) {
             if (admin.component != null) {
                 intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, admin.component);
             }
+            int adminUserId = UserHandle.myUserId();
             if (admin.userId != UserHandle.USER_NULL) {
                 adminUserId = admin.userId;
             }
             intent.putExtra(Intent.EXTRA_USER_ID, adminUserId);
         }
-        context.startActivityAsUser(intent, new UserHandle(adminUserId));
+        return intent;
     }
 
     public static void setTextViewPadlock(Context context,
@@ -224,6 +233,34 @@
             this.userId = userId;
         }
 
+        @Override
+        public boolean equals(Object object) {
+            if (object == this) return true;
+            if (!(object instanceof EnforcedAdmin)) return false;
+            EnforcedAdmin other = (EnforcedAdmin) object;
+            if (userId != other.userId) {
+                return false;
+            }
+            if ((component == null && other == null) ||
+                    (component != null && component.equals(other))) {
+                return true;
+            }
+            return false;
+        }
+
+        @Override
+        public String toString() {
+            return "EnforcedAdmin{component=" + component + ",userId=" + userId + "}";
+        }
+
+        public void copyTo(EnforcedAdmin other) {
+            if (other == null) {
+                other = new EnforcedAdmin();
+            }
+            other.component = component;
+            other.userId = userId;
+        }
+
         public EnforcedAdmin() {}
     }
 }
\ No newline at end of file
diff --git a/packages/SettingsLib/src/com/android/settingslib/RestrictedPreference.java b/packages/SettingsLib/src/com/android/settingslib/RestrictedPreference.java
index 569017a..13a46d0 100644
--- a/packages/SettingsLib/src/com/android/settingslib/RestrictedPreference.java
+++ b/packages/SettingsLib/src/com/android/settingslib/RestrictedPreference.java
@@ -79,6 +79,15 @@
         mHelper.checkRestrictionAndSetDisabled(userRestriction, userId);
     }
 
+    @Override
+    public void setEnabled(boolean enabled) {
+        if (enabled && isDisabledByAdmin()) {
+            mHelper.setDisabledByAdmin(null);
+            return;
+        }
+        super.setEnabled(enabled);
+    }
+
     public void setDisabledByAdmin(EnforcedAdmin admin) {
         if (mHelper.setDisabledByAdmin(admin)) {
             notifyChanged();
diff --git a/packages/SettingsLib/src/com/android/settingslib/RestrictedPreferenceHelper.java b/packages/SettingsLib/src/com/android/settingslib/RestrictedPreferenceHelper.java
index f041504..06aba96 100644
--- a/packages/SettingsLib/src/com/android/settingslib/RestrictedPreferenceHelper.java
+++ b/packages/SettingsLib/src/com/android/settingslib/RestrictedPreferenceHelper.java
@@ -45,7 +45,7 @@
     private EnforcedAdmin mEnforcedAdmin;
     private String mAttrUserRestriction = null;
 
-    RestrictedPreferenceHelper(Context context, Preference preference,
+    public RestrictedPreferenceHelper(Context context, Preference preference,
             AttributeSet attrs) {
         mContext = context;
         mPreference = preference;
@@ -54,21 +54,21 @@
         mRestrictedPadlockPadding = mContext.getResources().getDimensionPixelSize(
                 R.dimen.restricted_lock_icon_padding);
 
-        mAttrUserRestriction = attrs.getAttributeValue(
-                R.styleable.RestrictedPreference_userRestriction);
-        final TypedArray attributes = context.obtainStyledAttributes(attrs,
-                R.styleable.RestrictedPreference);
-        final TypedValue userRestriction =
-                attributes.peekValue(R.styleable.RestrictedPreference_userRestriction);
-        CharSequence data = null;
-        if (userRestriction != null && userRestriction.type == TypedValue.TYPE_STRING) {
-            if (userRestriction.resourceId != 0) {
-                data = context.getText(userRestriction.resourceId);
-            } else {
-                data = userRestriction.string;
+        if (attrs != null) {
+            final TypedArray attributes = context.obtainStyledAttributes(attrs,
+                    R.styleable.RestrictedPreference);
+            final TypedValue userRestriction =
+                    attributes.peekValue(R.styleable.RestrictedPreference_userRestriction);
+            CharSequence data = null;
+            if (userRestriction != null && userRestriction.type == TypedValue.TYPE_STRING) {
+                if (userRestriction.resourceId != 0) {
+                    data = context.getText(userRestriction.resourceId);
+                } else {
+                    data = userRestriction.string;
+                }
             }
+            mAttrUserRestriction = data == null ? null : data.toString();
         }
-        mAttrUserRestriction = data == null ? null : data.toString();
     }
 
     /**
@@ -100,7 +100,7 @@
     /**
      * Disable / enable if we have been passed the restriction in the xml.
      */
-    protected void onAttachedToHierarchy() {
+    public void onAttachedToHierarchy() {
         if (mAttrUserRestriction != null) {
             checkRestrictionAndSetDisabled(mAttrUserRestriction, UserHandle.myUserId());
         }
diff --git a/packages/SettingsLib/src/com/android/settingslib/RestrictedSwitchPreference.java b/packages/SettingsLib/src/com/android/settingslib/RestrictedSwitchPreference.java
index 308477b0..84e2bff 100644
--- a/packages/SettingsLib/src/com/android/settingslib/RestrictedSwitchPreference.java
+++ b/packages/SettingsLib/src/com/android/settingslib/RestrictedSwitchPreference.java
@@ -79,6 +79,15 @@
         mHelper.checkRestrictionAndSetDisabled(userRestriction, userId);
     }
 
+    @Override
+    public void setEnabled(boolean enabled) {
+        if (enabled && isDisabledByAdmin()) {
+            mHelper.setDisabledByAdmin(null);
+            return;
+        }
+        super.setEnabled(enabled);
+    }
+
     public void setDisabledByAdmin(EnforcedAdmin admin) {
         if (mHelper.setDisabledByAdmin(admin)) {
             notifyChanged();
diff --git a/packages/SettingsLib/src/com/android/settingslib/wifi/AccessPoint.java b/packages/SettingsLib/src/com/android/settingslib/wifi/AccessPoint.java
index f7b291b..2ee4b12 100644
--- a/packages/SettingsLib/src/com/android/settingslib/wifi/AccessPoint.java
+++ b/packages/SettingsLib/src/com/android/settingslib/wifi/AccessPoint.java
@@ -234,10 +234,13 @@
     }
 
     public boolean matches(WifiConfiguration config) {
-        if (config.isPasspoint() && mConfig != null && mConfig.isPasspoint())
+        if (config.isPasspoint() && mConfig != null && mConfig.isPasspoint()) {
             return config.FQDN.equals(mConfig.providerFriendlyName);
-        else
-            return ssid.equals(removeDoubleQuotes(config.SSID)) && security == getSecurity(config);
+        } else {
+            return ssid.equals(removeDoubleQuotes(config.SSID))
+                    && security == getSecurity(config)
+                    && (mConfig == null || mConfig.shared == config.shared);
+        }
     }
 
     public WifiConfiguration getConfig() {
diff --git a/packages/SystemUI/res/color/qs_tile_text.xml b/packages/SystemUI/res/color/qs_tile_text.xml
new file mode 100644
index 0000000..90e0bce
--- /dev/null
+++ b/packages/SystemUI/res/color/qs_tile_text.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+  ~ Copyright (C) 2015 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License
+  -->
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_enabled="false" android:color="@color/qs_tile_disabled_color" />
+    <item android:color="#B3FFFFFF" /> <!-- 70% white -->
+</selector>
\ No newline at end of file
diff --git a/packages/SystemUI/res/color/qs_user_detail_name.xml b/packages/SystemUI/res/color/qs_user_detail_name.xml
index 57f7e65..35c7a4f 100644
--- a/packages/SystemUI/res/color/qs_user_detail_name.xml
+++ b/packages/SystemUI/res/color/qs_user_detail_name.xml
@@ -18,5 +18,6 @@
 
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
     <item android:state_activated="true" android:color="@color/current_user_border_color" />
+    <item android:state_enabled="false" android:color="@color/qs_tile_disabled_color" />
     <item android:color="#66ffffff" /> <!-- 40% white -->
 </selector>
\ No newline at end of file
diff --git a/packages/SystemUI/res/layout/qs_tile_label.xml b/packages/SystemUI/res/layout/qs_tile_label.xml
new file mode 100644
index 0000000..603ebbf
--- /dev/null
+++ b/packages/SystemUI/res/layout/qs_tile_label.xml
@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright (C) 2016 The Android Open Source Project
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+-->
+<LinearLayout
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+     <TextView android:id="@+id/tile_label"
+             android:layout_width="wrap_content"
+             android:layout_height="wrap_content"
+             android:textColor="@color/qs_tile_text"
+             android:gravity="center_horizontal"
+             android:minLines="2"
+             android:padding="0dp"
+             android:fontFamily="sans-serif-condensed"
+             android:textStyle="normal"
+             android:textSize="@dimen/qs_tile_text_size"
+             android:clickable="false" />
+     <ImageView android:id="@+id/restricted_padlock"
+             android:layout_width="@dimen/qs_tile_text_size"
+             android:layout_height="@dimen/qs_tile_text_size"
+             android:src="@drawable/ic_settings_lock_outline"
+             android:layout_marginLeft="@dimen/restricted_padlock_pading"
+             android:baselineAlignBottom="true"
+             android:scaleType="centerInside"
+             android:visibility="gone" />
+</LinearLayout>
\ No newline at end of file
diff --git a/packages/SystemUI/res/layout/qs_user_detail_item.xml b/packages/SystemUI/res/layout/qs_user_detail_item.xml
index af22f03..a22c360 100644
--- a/packages/SystemUI/res/layout/qs_user_detail_item.xml
+++ b/packages/SystemUI/res/layout/qs_user_detail_item.xml
@@ -40,12 +40,25 @@
             systemui:framePadding="6dp"
             systemui:activeFrameColor="@color/current_user_border_color"/>
 
-    <TextView
-            android:id="@+id/user_name"
+    <LinearLayout
             android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:textSize="@dimen/qs_detail_item_secondary_text_size"
-            android:textColor="@color/qs_user_detail_name"
-            android:gravity="center_horizontal" />
+            android:layout_height="wrap_content">
+        <TextView
+                android:id="@+id/user_name"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:textSize="@dimen/qs_detail_item_secondary_text_size"
+                android:textColor="@color/qs_user_detail_name"
+                android:gravity="center_horizontal" />
+        <ImageView
+                android:id="@+id/restricted_padlock"
+                android:layout_width="@dimen/qs_detail_item_secondary_text_size"
+                android:layout_height="@dimen/qs_detail_item_secondary_text_size"
+                android:src="@drawable/ic_settings_lock_outline"
+                android:layout_marginLeft="@dimen/restricted_padlock_pading"
+                android:baselineAlignBottom="true"
+                android:scaleType="centerInside"
+                android:visibility="gone" />
+    </LinearLayout>
 
 </com.android.systemui.qs.tiles.UserDetailItemView>
\ No newline at end of file
diff --git a/packages/SystemUI/res/values/colors.xml b/packages/SystemUI/res/values/colors.xml
index 61c71dd..a80a5de 100644
--- a/packages/SystemUI/res/values/colors.xml
+++ b/packages/SystemUI/res/values/colors.xml
@@ -36,7 +36,6 @@
     <color name="system_warning_color">#fff4511e</color><!-- deep orange 600 -->
     <color name="qs_text">#FFFFFFFF</color>
     <color name="qs_tile_divider">#29ffffff</color><!-- 16% white -->
-    <color name="qs_tile_text">#B3FFFFFF</color><!-- 70% white -->
     <color name="qs_subhead">#99FFFFFF</color><!-- 60% white -->
     <color name="qs_detail_empty">#24B0BEC5</color><!-- 14% blue grey 200 -->
     <color name="qs_detail_button">#FFB0BEC5</color><!-- 100% blue grey 200 -->
@@ -48,6 +47,7 @@
     <color name="data_usage_graph_warning">#FFFFFFFF</color>
     <color name="status_bar_clock_color">#FFFFFFFF</color>
     <color name="qs_user_detail_icon_muted">#FFFFFFFF</color> <!-- not so muted after all -->
+    <color name="qs_tile_disabled_color">#9E9E9E</color> <!-- 38% black -->
 
     <!-- Tint color for the content on the notification overflow card. -->
     <color name="keyguard_overflow_content_color">#ff686868</color>
diff --git a/packages/SystemUI/res/values/dimens.xml b/packages/SystemUI/res/values/dimens.xml
index 097c352..1a9b874 100644
--- a/packages/SystemUI/res/values/dimens.xml
+++ b/packages/SystemUI/res/values/dimens.xml
@@ -167,6 +167,8 @@
     <dimen name="segmented_button_spacing">0dp</dimen>
     <dimen name="borderless_button_radius">2dp</dimen>
 
+    <dimen name="restricted_padlock_pading">4dp</dimen>
+
     <!-- How far the expanded QS panel peeks from the header in collapsed state. -->
     <dimen name="qs_peek_height">0dp</dimen>
 
diff --git a/packages/SystemUI/src/com/android/systemui/qs/QSIconView.java b/packages/SystemUI/src/com/android/systemui/qs/QSIconView.java
index 01eb5f9..7651ae8 100644
--- a/packages/SystemUI/src/com/android/systemui/qs/QSIconView.java
+++ b/packages/SystemUI/src/com/android/systemui/qs/QSIconView.java
@@ -81,7 +81,11 @@
                 }
             }
         }
-
+        if (state.disabledByPolicy) {
+            iv.setColorFilter(getContext().getColor(R.color.qs_tile_disabled_color));
+        } else {
+            iv.clearColorFilter();
+        }
     }
 
     protected int getIconMeasureMode() {
diff --git a/packages/SystemUI/src/com/android/systemui/qs/QSTile.java b/packages/SystemUI/src/com/android/systemui/qs/QSTile.java
index 2d9d105..de7c02d 100644
--- a/packages/SystemUI/src/com/android/systemui/qs/QSTile.java
+++ b/packages/SystemUI/src/com/android/systemui/qs/QSTile.java
@@ -23,10 +23,13 @@
 import android.os.Handler;
 import android.os.Looper;
 import android.os.Message;
+import android.os.UserHandle;
 import android.util.Log;
 import android.util.SparseArray;
 import android.view.View;
 import android.view.ViewGroup;
+
+import com.android.settingslib.RestrictedLockUtils;
 import com.android.systemui.qs.QSTile.State;
 import com.android.systemui.qs.external.TileServices;
 import com.android.systemui.statusbar.policy.BatteryController;
@@ -47,6 +50,8 @@
 import java.util.Collection;
 import java.util.Objects;
 
+import static com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
+
 /**
  * Base quick-settings tile, extend this to create a new tile.
  *
@@ -256,6 +261,18 @@
         mCallbacks.clear();
     }
 
+    protected void checkIfRestrictionEnforced(State state, String userRestriction) {
+        EnforcedAdmin admin = RestrictedLockUtils.checkIfRestrictionEnforced(mContext,
+                userRestriction, UserHandle.myUserId());
+        if (admin != null) {
+            state.disabledByPolicy = true;
+            state.enforcedAdmin = admin;
+        } else {
+            state.disabledByPolicy = false;
+            state.enforcedAdmin = null;
+        }
+    }
+
     protected final class H extends Handler {
         private static final int ADD_CALLBACK = 1;
         private static final int CLICK = 2;
@@ -282,8 +299,14 @@
                     handleAddCallback((QSTile.Callback)msg.obj);
                 } else if (msg.what == CLICK) {
                     name = "handleClick";
-                    mAnnounceNextStateChange = true;
-                    handleClick();
+                    if (mState.disabledByPolicy) {
+                        Intent intent = RestrictedLockUtils.getShowAdminSupportDetailsIntent(
+                                mContext, mState.enforcedAdmin);
+                        mHost.startActivityDismissingKeyguard(intent);
+                    } else {
+                        mAnnounceNextStateChange = true;
+                        handleClick();
+                    }
                 } else if (msg.what == SECONDARY_CLICK) {
                     name = "handleSecondaryClick";
                     handleSecondaryClick();
@@ -437,6 +460,8 @@
         public CharSequence contentDescription;
         public CharSequence dualLabelContentDescription;
         public boolean autoMirrorDrawable = true;
+        public boolean disabledByPolicy;
+        public EnforcedAdmin enforcedAdmin;
 
         public boolean copyTo(State other) {
             if (other == null) throw new IllegalArgumentException();
@@ -446,12 +471,16 @@
                     || !Objects.equals(other.contentDescription, contentDescription)
                     || !Objects.equals(other.autoMirrorDrawable, autoMirrorDrawable)
                     || !Objects.equals(other.dualLabelContentDescription,
-                    dualLabelContentDescription);
+                    dualLabelContentDescription)
+                    || !Objects.equals(other.disabledByPolicy, disabledByPolicy)
+                    || !Objects.equals(other.enforcedAdmin, enforcedAdmin);
             other.icon = icon;
             other.label = label;
             other.contentDescription = contentDescription;
             other.dualLabelContentDescription = dualLabelContentDescription;
             other.autoMirrorDrawable = autoMirrorDrawable;
+            other.disabledByPolicy = disabledByPolicy;
+            enforcedAdmin.copyTo(other.enforcedAdmin);
             return changed;
         }
 
@@ -467,6 +496,8 @@
             sb.append(",contentDescription=").append(contentDescription);
             sb.append(",dualLabelContentDescription=").append(dualLabelContentDescription);
             sb.append(",autoMirrorDrawable=").append(autoMirrorDrawable);
+            sb.append(",disabledByPolicy=").append(disabledByPolicy);
+            sb.append(",enforcedAdmin=").append(enforcedAdmin);
             return sb.append(']');
         }
     }
diff --git a/packages/SystemUI/src/com/android/systemui/qs/QSTileView.java b/packages/SystemUI/src/com/android/systemui/qs/QSTileView.java
index 41ac4d9..664ca39 100644
--- a/packages/SystemUI/src/com/android/systemui/qs/QSTileView.java
+++ b/packages/SystemUI/src/com/android/systemui/qs/QSTileView.java
@@ -19,32 +19,33 @@
 import android.content.Context;
 import android.content.res.Configuration;
 import android.content.res.Resources;
-import android.graphics.Typeface;
 import android.util.MathUtils;
-import android.util.TypedValue;
 import android.view.Gravity;
+import android.view.LayoutInflater;
 import android.view.View;
+import android.widget.ImageView;
 import android.widget.TextView;
 import com.android.systemui.FontSizeUtils;
 import com.android.systemui.R;
 
 /** View that represents a standard quick settings tile. **/
 public class QSTileView extends QSTileBaseView {
-    private static final Typeface CONDENSED = Typeface.create("sans-serif-condensed",
-            Typeface.NORMAL);
-
     protected final Context mContext;
+    private QSIconView mIconView;
     private final int mTileSpacingPx;
     private int mTilePaddingTopPx;
 
     private TextView mLabel;
+    private ImageView mPadLock;
 
     public QSTileView(Context context, QSIconView icon) {
         super(context, icon);
 
         mContext = context;
+        mIconView = icon;
         final Resources res = context.getResources();
         mTileSpacingPx = res.getDimensionPixelSize(R.dimen.qs_tile_spacing);
+
         setClipChildren(false);
 
         setClickable(true);
@@ -76,16 +77,10 @@
 
     private void createLabel() {
         final Resources res = mContext.getResources();
-        mLabel = new TextView(mContext);
-        mLabel.setTextColor(mContext.getColor(R.color.qs_tile_text));
-        mLabel.setGravity(Gravity.CENTER_HORIZONTAL);
-        mLabel.setMinLines(2);
-        mLabel.setPadding(0, 0, 0, 0);
-        mLabel.setTypeface(CONDENSED);
-        mLabel.setTextSize(TypedValue.COMPLEX_UNIT_PX,
-                res.getDimensionPixelSize(R.dimen.qs_tile_text_size));
-        mLabel.setClickable(false);
-        addView(mLabel);
+        View view = LayoutInflater.from(mContext).inflate(R.layout.qs_tile_label, null);
+        mLabel = (TextView) view.findViewById(R.id.tile_label);
+        mPadLock = (ImageView) view.findViewById(R.id.restricted_padlock);
+        addView(view);
     }
 
     public void init(OnClickListener clickPrimary, OnLongClickListener longClick) {
@@ -96,5 +91,7 @@
     protected void handleStateChanged(QSTile.State state) {
         super.handleStateChanged(state);
         mLabel.setText(state.label);
+        mLabel.setEnabled(!state.disabledByPolicy);
+        mPadLock.setVisibility(state.disabledByPolicy ? View.VISIBLE : View.GONE);
     }
 }
diff --git a/packages/SystemUI/src/com/android/systemui/qs/tiles/DndTile.java b/packages/SystemUI/src/com/android/systemui/qs/tiles/DndTile.java
index 4d9b266..39eda6b 100644
--- a/packages/SystemUI/src/com/android/systemui/qs/tiles/DndTile.java
+++ b/packages/SystemUI/src/com/android/systemui/qs/tiles/DndTile.java
@@ -22,6 +22,7 @@
 import android.content.IntentFilter;
 import android.content.SharedPreferences;
 import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
+import android.os.UserManager;
 import android.provider.Settings;
 import android.provider.Settings.Global;
 import android.view.LayoutInflater;
@@ -99,14 +100,6 @@
 
     @Override
     public void handleClick() {
-        if (mController.isVolumeRestricted()) {
-            // Collapse the panels, so the user can see the toast.
-            mHost.collapsePanels();
-            SysUIToast.makeText(mContext, mContext.getString(
-                    com.android.internal.R.string.error_message_change_not_allowed),
-                    Toast.LENGTH_LONG).show();
-            return;
-        }
         MetricsLogger.action(mContext, getMetricsCategory(), !mState.value);
         if (mState.value) {
             mController.setZen(Global.ZEN_MODE_OFF, null, TAG);
@@ -123,6 +116,8 @@
         final boolean newValue = zen != Global.ZEN_MODE_OFF;
         final boolean valueChanged = state.value != newValue;
         state.value = newValue;
+        state.disabledByPolicy = mController.isVolumeRestricted();
+        checkIfRestrictionEnforced(state, UserManager.DISALLOW_ADJUST_VOLUME);
         switch (zen) {
             case Global.ZEN_MODE_IMPORTANT_INTERRUPTIONS:
                 state.icon = ResourceIcon.get(R.drawable.ic_qs_dnd_on);
diff --git a/packages/SystemUI/src/com/android/systemui/qs/tiles/UserDetailItemView.java b/packages/SystemUI/src/com/android/systemui/qs/tiles/UserDetailItemView.java
index 21c5c96..167c611 100644
--- a/packages/SystemUI/src/com/android/systemui/qs/tiles/UserDetailItemView.java
+++ b/packages/SystemUI/src/com/android/systemui/qs/tiles/UserDetailItemView.java
@@ -43,6 +43,7 @@
     private TextView mName;
     private Typeface mRegularTypeface;
     private Typeface mActivatedTypeface;
+    private View mRestrictedPadlock;
 
     public UserDetailItemView(Context context) {
         this(context, null);
@@ -59,6 +60,7 @@
     public UserDetailItemView(Context context, AttributeSet attrs, int defStyleAttr,
             int defStyleRes) {
         super(context, attrs, defStyleAttr, defStyleRes);
+
         final TypedArray a = context.obtainStyledAttributes(
                 attrs, R.styleable.UserDetailItemView, defStyleAttr, defStyleRes);
         final int N = a.getIndexCount();
@@ -95,6 +97,12 @@
         mAvatar.setDrawable(picture);
     }
 
+    public void setDisabledByAdmin(boolean disabled) {
+        mRestrictedPadlock.setVisibility(disabled ? View.VISIBLE : View.GONE);
+        mName.setEnabled(!disabled);
+        mAvatar.setDisabled(disabled);
+    }
+
     @Override
     protected void onFinishInflate() {
         mAvatar = (UserAvatarView) findViewById(R.id.user_picture);
@@ -106,6 +114,7 @@
             mActivatedTypeface = mName.getTypeface();
         }
         updateTypeface();
+        mRestrictedPadlock = findViewById(R.id.restricted_padlock);
     }
 
     @Override
diff --git a/packages/SystemUI/src/com/android/systemui/qs/tiles/UserDetailView.java b/packages/SystemUI/src/com/android/systemui/qs/tiles/UserDetailView.java
index d4f54b6..b44ef0b 100644
--- a/packages/SystemUI/src/com/android/systemui/qs/tiles/UserDetailView.java
+++ b/packages/SystemUI/src/com/android/systemui/qs/tiles/UserDetailView.java
@@ -16,17 +16,18 @@
 
 package com.android.systemui.qs.tiles;
 
-import com.android.internal.logging.MetricsLogger;
-import com.android.systemui.R;
-import com.android.systemui.qs.PseudoGridView;
-import com.android.systemui.statusbar.policy.UserSwitcherController;
-
 import android.content.Context;
+import android.content.Intent;
 import android.util.AttributeSet;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
+import com.android.internal.logging.MetricsLogger;
+import com.android.settingslib.RestrictedLockUtils;
+import com.android.systemui.R;
+import com.android.systemui.qs.PseudoGridView;
+import com.android.systemui.statusbar.policy.UserSwitcherController;
 /**
  * Quick settings detail view for user switching.
  */
@@ -55,11 +56,13 @@
     public static class Adapter extends UserSwitcherController.BaseUserAdapter
             implements OnClickListener {
 
-        private Context mContext;
+        private final Context mContext;
+        private final UserSwitcherController mController;
 
         public Adapter(Context context, UserSwitcherController controller) {
             super(controller);
             mContext = context;
+            mController = controller;
         }
 
         @Override
@@ -77,6 +80,7 @@
                 v.bind(name, item.picture);
             }
             v.setActivated(item.isCurrent);
+            v.setDisabledByAdmin(item.isDisabledByAdmin);
             v.setTag(item);
             return v;
         }
@@ -85,8 +89,14 @@
         public void onClick(View view) {
             UserSwitcherController.UserRecord tag =
                     (UserSwitcherController.UserRecord) view.getTag();
-            MetricsLogger.action(mContext, MetricsLogger.QS_SWITCH_USER);
-            switchTo(tag);
+            if (tag.isDisabledByAdmin) {
+                final Intent intent = RestrictedLockUtils.getShowAdminSupportDetailsIntent(
+                        mContext, tag.enforcedAdmin);
+                mController.startActivity(intent);
+            } else {
+                MetricsLogger.action(mContext, MetricsLogger.QS_SWITCH_USER);
+                switchTo(tag);
+            }
         }
     }
 }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
index 50e88d3..5be52ca 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
@@ -866,7 +866,7 @@
         mKeyguardMonitor = new KeyguardMonitor(mContext);
         if (UserManager.get(mContext).isUserSwitcherEnabled()) {
             mUserSwitcherController = new UserSwitcherController(mContext, mKeyguardMonitor,
-                    mHandler);
+                    mHandler, this);
             if (mUserSwitcherController.useFullscreenUserSwitcher()) {
                 mFullscreenUserSwitcher = new FullscreenUserSwitcher(this, mUserSwitcherController,
                         (ViewStub) mStatusBarWindow.findViewById(
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/UserAvatarView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/UserAvatarView.java
index 101a5f3..4f33d82 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/UserAvatarView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/UserAvatarView.java
@@ -23,6 +23,9 @@
 import android.graphics.Bitmap;
 import android.graphics.BitmapShader;
 import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.PorterDuff;
+import android.graphics.PorterDuffColorFilter;
 import android.graphics.Matrix;
 import android.graphics.Paint;
 import android.graphics.Shader;
@@ -41,6 +44,7 @@
     private float mFramePadding;
     private Bitmap mBitmap;
     private Drawable mDrawable;
+    private boolean mIsDisabled;
 
     private final Paint mFramePaint = new Paint();
     private final Paint mBitmapPaint = new Paint();
@@ -239,4 +243,28 @@
             mDrawable.setState(getDrawableState());
         }
     }
+
+    public void setDisabled(boolean disabled) {
+        if (mIsDisabled == disabled) {
+            return;
+        }
+        mIsDisabled = disabled;
+        int disabledColor = getContext().getColor(R.color.qs_tile_disabled_color);
+        PorterDuffColorFilter filter = new PorterDuffColorFilter(disabledColor,
+                PorterDuff.Mode.SRC_ATOP);
+        if (mBitmap != null) {
+            if (disabled) {
+                mBitmapPaint.setColorFilter(filter);
+            } else {
+                mBitmapPaint.setColorFilter(null);
+            }
+        } else if (mDrawable != null) {
+            if (disabled) {
+                mDrawable.setColorFilter(filter);
+            } else {
+                mDrawable.setColorFilter(null);
+            }
+        }
+        invalidate();
+    }
 }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/policy/UserSwitcherController.java b/packages/SystemUI/src/com/android/systemui/statusbar/policy/UserSwitcherController.java
index f3a3554..ffec615 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/policy/UserSwitcherController.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/policy/UserSwitcherController.java
@@ -22,7 +22,9 @@
 import android.app.Notification;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
+import android.app.admin.DevicePolicyManager;
 import android.content.BroadcastReceiver;
+import android.content.ComponentName;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
@@ -33,6 +35,7 @@
 import android.graphics.drawable.Drawable;
 import android.os.AsyncTask;
 import android.os.Build;
+import android.os.Bundle;
 import android.os.Handler;
 import android.os.RemoteException;
 import android.os.UserHandle;
@@ -48,11 +51,13 @@
 
 import com.android.internal.logging.MetricsLogger;
 import com.android.internal.util.UserIcons;
+import com.android.settingslib.RestrictedLockUtils;
 import com.android.systemui.BitmapHelper;
 import com.android.systemui.GuestResumeSessionReceiver;
 import com.android.systemui.R;
 import com.android.systemui.qs.QSTile;
 import com.android.systemui.qs.tiles.UserDetailView;
+import com.android.systemui.statusbar.phone.ActivityStarter;
 import com.android.systemui.statusbar.phone.SystemUIDialog;
 
 import java.io.FileDescriptor;
@@ -61,6 +66,8 @@
 import java.util.ArrayList;
 import java.util.List;
 
+import static com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
+
 /**
  * Keeps a list of all users on the device for user switching.
  */
@@ -88,6 +95,7 @@
             = new GuestResumeSessionReceiver();
     private final KeyguardMonitor mKeyguardMonitor;
     private final Handler mHandler;
+    private final ActivityStarter mActivityStarter;
 
     private ArrayList<UserRecord> mUsers = new ArrayList<>();
     private Dialog mExitGuestDialog;
@@ -99,11 +107,12 @@
     private SparseBooleanArray mForcePictureLoadForUserId = new SparseBooleanArray(2);
 
     public UserSwitcherController(Context context, KeyguardMonitor keyguardMonitor,
-            Handler handler) {
+            Handler handler, ActivityStarter activityStarter) {
         mContext = context;
         mGuestResumeSessionReceiver.register(context);
         mKeyguardMonitor = keyguardMonitor;
         mHandler = handler;
+        mActivityStarter = activityStarter;
         mUserManager = UserManager.get(context);
         IntentFilter filter = new IntentFilter();
         filter.addAction(Intent.ACTION_USER_ADDED);
@@ -206,25 +215,23 @@
                     }
                 }
 
-                boolean systemCanCreateUsers = !mUserManager.hasUserRestriction(
-                                UserManager.DISALLOW_ADD_USER, UserHandle.SYSTEM);
                 boolean currentUserCanCreateUsers = currentUserInfo != null
                         && (currentUserInfo.isAdmin()
-                                || currentUserInfo.id == UserHandle.USER_SYSTEM)
-                        && systemCanCreateUsers;
-                boolean anyoneCanCreateUsers = systemCanCreateUsers && addUsersWhenLocked;
-                boolean canCreateGuest = (currentUserCanCreateUsers || anyoneCanCreateUsers)
+                                || currentUserInfo.id == UserHandle.USER_SYSTEM);
+                boolean canCreateGuest = (currentUserCanCreateUsers || addUsersWhenLocked)
                         && guestRecord == null;
-                boolean canCreateUser = (currentUserCanCreateUsers || anyoneCanCreateUsers)
+                boolean canCreateUser = (currentUserCanCreateUsers || addUsersWhenLocked)
                         && mUserManager.canAddMoreUsers();
                 boolean createIsRestricted = !addUsersWhenLocked;
 
                 if (!mSimpleUserSwitcher) {
                     if (guestRecord == null) {
                         if (canCreateGuest) {
-                            records.add(new UserRecord(null /* info */, null /* picture */,
+                            guestRecord = new UserRecord(null /* info */, null /* picture */,
                                     true /* isGuest */, false /* isCurrent */,
-                                    false /* isAddUser */, createIsRestricted));
+                                    false /* isAddUser */, createIsRestricted);
+                            checkIfAddUserDisallowed(guestRecord);
+                            records.add(guestRecord);
                         }
                     } else {
                         int index = guestRecord.isCurrent ? 0 : records.size();
@@ -233,9 +240,11 @@
                 }
 
                 if (!mSimpleUserSwitcher && canCreateUser) {
-                    records.add(new UserRecord(null /* info */, null /* picture */,
+                    UserRecord addUserRecord = new UserRecord(null /* info */, null /* picture */,
                             false /* isGuest */, false /* isCurrent */, true /* isAddUser */,
-                            createIsRestricted));
+                            createIsRestricted);
+                    checkIfAddUserDisallowed(addUserRecord);
+                    records.add(addUserRecord);
                 }
 
                 return records;
@@ -594,6 +603,22 @@
         }
     }
 
+    private void checkIfAddUserDisallowed(UserRecord record) {
+        EnforcedAdmin admin = RestrictedLockUtils.checkIfRestrictionEnforced(mContext,
+                UserManager.DISALLOW_ADD_USER, UserHandle.myUserId());
+        if (admin != null) {
+            record.isDisabledByAdmin = true;
+            record.enforcedAdmin = admin;
+        } else {
+            record.isDisabledByAdmin = false;
+            record.enforcedAdmin = null;
+        }
+    }
+
+    public void startActivity(Intent intent) {
+        mActivityStarter.startActivity(intent, true);
+    }
+
     public static final class UserRecord {
         public final UserInfo info;
         public final Bitmap picture;
@@ -602,6 +627,8 @@
         public final boolean isAddUser;
         /** If true, the record is only visible to the owner and only when unlocked. */
         public final boolean isRestricted;
+        public boolean isDisabledByAdmin;
+        public EnforcedAdmin enforcedAdmin;
 
         public UserRecord(UserInfo info, Bitmap picture, boolean isGuest, boolean isCurrent,
                 boolean isAddUser, boolean isRestricted) {
@@ -634,6 +661,10 @@
             if (isCurrent) sb.append(" <isCurrent>");
             if (picture != null) sb.append(" <hasPicture>");
             if (isRestricted) sb.append(" <isRestricted>");
+            if (isDisabledByAdmin) {
+                sb.append(" <isDisabledByAdmin>");
+                sb.append(" enforcedAdmin=" + enforcedAdmin);
+            }
             sb.append(')');
             return sb.toString();
         }
diff --git a/services/accessibility/java/com/android/server/accessibility/AccessibilityManagerService.java b/services/accessibility/java/com/android/server/accessibility/AccessibilityManagerService.java
index 39d5952..28aeef7 100644
--- a/services/accessibility/java/com/android/server/accessibility/AccessibilityManagerService.java
+++ b/services/accessibility/java/com/android/server/accessibility/AccessibilityManagerService.java
@@ -715,7 +715,7 @@
     }
 
     @Override
-    public IBinder getWindowToken(int windowId) {
+    public IBinder getWindowToken(int windowId, int userId) {
         mSecurityPolicy.enforceCallingPermission(
                 Manifest.permission.RETRIEVE_WINDOW_TOKEN,
                 GET_WINDOW_TOKEN);
@@ -724,8 +724,7 @@
             // share the accessibility state of the parent. The call below
             // performs the current profile parent resolution.
             final int resolvedUserId = mSecurityPolicy
-                    .resolveCallingUserIdEnforcingPermissionsLocked(
-                            UserHandle.getCallingUserId());
+                    .resolveCallingUserIdEnforcingPermissionsLocked(userId);
             if (resolvedUserId != mCurrentUserId) {
                 return null;
             }
diff --git a/services/backup/java/com/android/server/backup/BackupManagerService.java b/services/backup/java/com/android/server/backup/BackupManagerService.java
index 2264c69..aa15373 100644
--- a/services/backup/java/com/android/server/backup/BackupManagerService.java
+++ b/services/backup/java/com/android/server/backup/BackupManagerService.java
@@ -239,6 +239,11 @@
     // How long between attempts to perform a full-data backup of any given app
     static final long MIN_FULL_BACKUP_INTERVAL = 1000 * 60 * 60 * 24; // one day
 
+    // If an app is busy when we want to do a full-data backup, how long to defer the retry.
+    // This is fuzzed, so there are two parameters; backoff_min + Rand[0, backoff_fuzz)
+    static final long BUSY_BACKOFF_MIN_MILLIS = 1000 * 60 * 60;  // one hour
+    static final int BUSY_BACKOFF_FUZZ = 1000 * 60 * 60 * 2;  // two hours
+
     Context mContext;
     private PackageManager mPackageManager;
     IPackageManager mPackageManagerBinder;
@@ -4496,35 +4501,72 @@
                 return false;
             }
 
-            // At this point we know that we have work to do, just not right now.  Any
-            // exit without actually running backups will also require that we
+            // At this point we know that we have work to do, but possibly not right now.
+            // Any exit without actually running backups will also require that we
             // reschedule the job.
             boolean runBackup = true;
+            boolean headBusy;
 
-            if (!fullBackupAllowable(getTransport(mCurrentTransport))) {
-                if (MORE_DEBUG) {
-                    Slog.i(TAG, "Preconditions not met; not running full backup");
-                }
-                runBackup = false;
-                // Typically this means we haven't run a key/value backup yet.  Back off
-                // full-backup operations by the key/value job's run interval so that
-                // next time we run, we are likely to be able to make progress.
-                latency = KeyValueBackupJob.BATCH_INTERVAL;
-            }
+            do {
+                headBusy = false;
 
-            if (runBackup) {
-                entry = mFullBackupQueue.get(0);
-                long timeSinceRun = now - entry.lastBackup;
-                runBackup = (timeSinceRun >= MIN_FULL_BACKUP_INTERVAL);
-                if (!runBackup) {
-                    // It's too early to back up the next thing in the queue, so bow out
+                if (!fullBackupAllowable(getTransport(mCurrentTransport))) {
                     if (MORE_DEBUG) {
-                        Slog.i(TAG, "Device ready but too early to back up next app");
+                        Slog.i(TAG, "Preconditions not met; not running full backup");
                     }
-                    // Wait until the next app in the queue falls due for a full data backup
-                    latency = MIN_FULL_BACKUP_INTERVAL - timeSinceRun;
+                    runBackup = false;
+                    // Typically this means we haven't run a key/value backup yet.  Back off
+                    // full-backup operations by the key/value job's run interval so that
+                    // next time we run, we are likely to be able to make progress.
+                    latency = KeyValueBackupJob.BATCH_INTERVAL;
                 }
-            }
+
+                if (runBackup) {
+                    entry = mFullBackupQueue.get(0);
+                    long timeSinceRun = now - entry.lastBackup;
+                    runBackup = (timeSinceRun >= MIN_FULL_BACKUP_INTERVAL);
+                    if (!runBackup) {
+                        // It's too early to back up the next thing in the queue, so bow out
+                        if (MORE_DEBUG) {
+                            Slog.i(TAG, "Device ready but too early to back up next app");
+                        }
+                        // Wait until the next app in the queue falls due for a full data backup
+                        latency = MIN_FULL_BACKUP_INTERVAL - timeSinceRun;
+                        break;  // we know we aren't doing work yet, so bail.
+                    }
+
+                    try {
+                        PackageInfo appInfo = mPackageManager.getPackageInfo(entry.packageName, 0);
+                        headBusy = mActivityManager.isAppForeground(appInfo.applicationInfo.uid);
+
+                        if (headBusy) {
+                            final long nextEligible = System.currentTimeMillis()
+                                    + BUSY_BACKOFF_MIN_MILLIS
+                                    + mTokenGenerator.nextInt(BUSY_BACKOFF_FUZZ);
+                            if (DEBUG_SCHEDULING) {
+                                SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+                                Slog.i(TAG, "Full backup time but " + entry.packageName
+                                        + " is busy; deferring to "
+                                        + sdf.format(new Date(nextEligible)));
+                            }
+                            // This relocates the app's entry from the head of the queue to
+                            // its order-appropriate position further down, so upon looping
+                            // a new candidate will be considered at the head.
+                            enqueueFullBackup(entry.packageName,
+                                    nextEligible - MIN_FULL_BACKUP_INTERVAL);
+                        }
+
+                    } catch (NameNotFoundException nnf) {
+                        // So, we think we want to back this up, but it turns out the package
+                        // in question is no longer installed.  We want to drop it from the
+                        // queue entirely and move on, but if there's nothing else in the queue
+                        // we should bail entirely.  headBusy cannot have been set to true yet.
+                        runBackup = (mFullBackupQueue.size() > 1);
+                    } catch (RemoteException e) {
+                        // Cannot happen; the Activity Manager is in the same process
+                    }
+                }
+            } while (headBusy);
 
             if (!runBackup) {
                 if (DEBUG_SCHEDULING) {
@@ -4539,7 +4581,7 @@
                 return false;
             }
 
-            // Okay, the top thing is runnable now.  Pop it off and get going.
+            // Okay, the top thing is ready for backup now.  Do it.
             mFullBackupQueue.remove(0);
             CountDownLatch latch = new CountDownLatch(1);
             String[] pkg = new String[] {entry.packageName};
diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index 093a33d..ca38b71 100644
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -18,7 +18,6 @@
 
 import com.google.android.collect.Lists;
 import com.google.android.collect.Maps;
-
 import com.android.internal.R;
 import com.android.internal.annotations.GuardedBy;
 import com.android.internal.app.AssistUtils;
@@ -240,6 +239,7 @@
 import java.util.concurrent.atomic.AtomicLong;
 
 import dalvik.system.VMRuntime;
+
 import libcore.io.IoUtils;
 import libcore.util.EmptyArray;
 
@@ -7256,6 +7256,17 @@
     }
 
     @Override
+    public boolean isAppForeground(int uid) throws RemoteException {
+        synchronized (this) {
+            UidRecord uidRec = mActiveUids.get(uid);
+            if (uidRec == null || uidRec.idle) {
+                return false;
+            }
+            return uidRec.curProcState <= ActivityManager.PROCESS_STATE_IMPORTANT_FOREGROUND;
+        }
+    }
+
+    @Override
     public boolean inMultiWindowMode(IBinder token) {
         final long origId = Binder.clearCallingIdentity();
         try {
diff --git a/services/core/java/com/android/server/content/SyncManager.java b/services/core/java/com/android/server/content/SyncManager.java
index 78618ce..2eb9095 100644
--- a/services/core/java/com/android/server/content/SyncManager.java
+++ b/services/core/java/com/android/server/content/SyncManager.java
@@ -2682,6 +2682,31 @@
                         }
                         continue;
                     }
+                    String packageName = getPackageName(op.target);
+                    ApplicationInfo ai = null;
+                    if (packageName != null) {
+                        try {
+                            ai = mContext.getPackageManager().getApplicationInfo(packageName,
+                                    PackageManager.GET_UNINSTALLED_PACKAGES
+                                            | PackageManager.GET_DISABLED_COMPONENTS);
+                        } catch (NameNotFoundException e) {
+                            operationIterator.remove();
+                            mSyncStorageEngine.deleteFromPending(op.pendingOperation);
+                            continue;
+                        }
+                    }
+                    // If app is considered idle, then skip for now and backoff
+                    if (ai != null
+                            && mAppIdleMonitor.isAppIdle(packageName, ai.uid, op.target.userId)) {
+                        increaseBackoffSetting(op);
+                        op.appIdle = true;
+                        if (isLoggable) {
+                            Log.v(TAG, "Sync backing off idle app " + packageName);
+                        }
+                        continue;
+                    } else {
+                        op.appIdle = false;
+                    }
                     if (!isOperationValidLocked(op)) {
                         operationIterator.remove();
                         mSyncStorageEngine.deleteFromPending(op.pendingOperation);
@@ -2700,28 +2725,6 @@
                         }
                         continue;
                     }
-                    String packageName = getPackageName(op.target);
-                    ApplicationInfo ai = null;
-                    if (packageName != null) {
-                        try {
-                            ai = mContext.getPackageManager().getApplicationInfo(packageName,
-                                    PackageManager.GET_UNINSTALLED_PACKAGES
-                                    | PackageManager.GET_DISABLED_COMPONENTS);
-                        } catch (NameNotFoundException e) {
-                        }
-                    }
-                    // If app is considered idle, then skip for now and backoff
-                    if (ai != null
-                            && mAppIdleMonitor.isAppIdle(packageName, ai.uid, op.target.userId)) {
-                        increaseBackoffSetting(op);
-                        op.appIdle = true;
-                        if (isLoggable) {
-                            Log.v(TAG, "Sync backing off idle app " + packageName);
-                        }
-                        continue;
-                    } else {
-                        op.appIdle = false;
-                    }
                     // Add this sync to be run.
                     operations.add(op);
                 }
diff --git a/wifi/java/android/net/wifi/WifiConfiguration.java b/wifi/java/android/net/wifi/WifiConfiguration.java
index 972dcb2..0c06ae8 100644
--- a/wifi/java/android/net/wifi/WifiConfiguration.java
+++ b/wifi/java/android/net/wifi/WifiConfiguration.java
@@ -24,6 +24,7 @@
 import android.net.StaticIpConfiguration;
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.os.UserHandle;
 import android.text.TextUtils;
 
 import java.util.Arrays;
@@ -327,6 +328,13 @@
 
     /**
      * @hide
+     * This network configuration is visible to and usable by other users on the
+     * same device.
+     */
+    public boolean shared;
+
+    /**
+     * @hide
      */
     private IpConfiguration mIpConfiguration;
 
@@ -1103,6 +1111,7 @@
         mIpConfiguration = new IpConfiguration();
         lastUpdateUid = -1;
         creatorUid = -1;
+        shared = true;
     }
 
     /**
@@ -1488,6 +1497,9 @@
             key = mCachedConfigKey;
         } else if (providerFriendlyName != null) {
             key = FQDN + KeyMgmt.strings[KeyMgmt.WPA_EAP];
+            if (!shared) {
+                key += "-" + Integer.toString(UserHandle.getUserId(creatorUid));
+            }
         } else {
             if (allowedKeyManagement.get(KeyMgmt.WPA_PSK)) {
                 key = SSID + KeyMgmt.strings[KeyMgmt.WPA_PSK];
@@ -1499,6 +1511,9 @@
             } else {
                 key = SSID + KeyMgmt.strings[KeyMgmt.NONE];
             }
+            if (!shared) {
+                key += "-" + Integer.toString(UserHandle.getUserId(creatorUid));
+            }
             mCachedConfigKey = key;
         }
         return key;
@@ -1511,27 +1526,6 @@
         return configKey(false);
     }
 
-    /** @hide
-     * return the config key string based on a scan result
-     */
-    static public String configKey(ScanResult result) {
-        String key = "\"" + result.SSID + "\"";
-
-        if (result.capabilities.contains("WEP")) {
-            key = key + "-WEP";
-        }
-
-        if (result.capabilities.contains("PSK")) {
-            key = key + "-" + KeyMgmt.strings[KeyMgmt.WPA_PSK];
-        }
-
-        if (result.capabilities.contains("EAP")) {
-            key = key + "-" + KeyMgmt.strings[KeyMgmt.WPA_EAP];
-        }
-
-        return key;
-    }
-
     /** @hide */
     public IpConfiguration getIpConfiguration() {
         return mIpConfiguration;
@@ -1593,6 +1587,11 @@
         return 0;
     }
 
+    /** @hide */
+    public boolean isVisibleToUser(int userId) {
+        return shared || (UserHandle.getUserId(creatorUid) == userId);
+    }
+
     /** copy constructor {@hide} */
     public WifiConfiguration(WifiConfiguration source) {
         if (source != null) {
@@ -1676,6 +1675,7 @@
             noInternetAccessExpected = source.noInternetAccessExpected;
             creationTime = source.creationTime;
             updateTime = source.updateTime;
+            shared = source.shared;
         }
     }
 
@@ -1747,6 +1747,7 @@
         dest.writeInt(userApproved);
         dest.writeInt(numNoInternetAccessReports);
         dest.writeInt(noInternetAccessExpected ? 1 : 0);
+        dest.writeInt(shared ? 1 : 0);
     }
 
     /** Implement the Parcelable interface {@hide} */
@@ -1814,6 +1815,7 @@
                 config.userApproved = in.readInt();
                 config.numNoInternetAccessReports = in.readInt();
                 config.noInternetAccessExpected = in.readInt() != 0;
+                config.shared = in.readInt() != 0;
                 return config;
             }