Stop populating RemoteViews in Notifications.

Builder now stores its parameters directly in the
Notification object itself, reducing the amount of copying
needed to construct the final Notification as well as
converging the two data structures. All Builder data is now
captured in Notification, so it is easy to reconstruct
a Builder for any Notification object.

This obviates all stripping/unstripping operations because
all Notification objects start life "stripped" of their
RemoteViews, which must be constructed explicitly by clients
(presumably listeners wishing to show the notification to
the user in its conventional form).

Note: While contentView, bigContentView, and
headsUpContentView are being @Deprecated in this CL,
specifying custom RemoteViews is definitely still supported!
You just have to use Builder methods to do so.

Bug: 20153922
Change-Id: I81f8ffed0eb76084b2f2b25b97e325858f0a1d05
diff --git a/api/current.txt b/api/current.txt
index e912440..48e175a 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -4830,17 +4830,17 @@
     field public android.app.Notification.Action[] actions;
     field public android.media.AudioAttributes audioAttributes;
     field public deprecated int audioStreamType;
-    field public android.widget.RemoteViews bigContentView;
+    field public deprecated android.widget.RemoteViews bigContentView;
     field public java.lang.String category;
     field public int color;
     field public android.app.PendingIntent contentIntent;
-    field public android.widget.RemoteViews contentView;
+    field public deprecated android.widget.RemoteViews contentView;
     field public int defaults;
     field public android.app.PendingIntent deleteIntent;
     field public android.os.Bundle extras;
     field public int flags;
     field public android.app.PendingIntent fullScreenIntent;
-    field public android.widget.RemoteViews headsUpContentView;
+    field public deprecated android.widget.RemoteViews headsUpContentView;
     field public deprecated int icon;
     field public int iconLevel;
     field public deprecated android.graphics.Bitmap largeIcon;
@@ -4931,14 +4931,22 @@
     method public android.app.Notification.Builder extend(android.app.Notification.Extender);
     method public android.os.Bundle getExtras();
     method public deprecated android.app.Notification getNotification();
+    method public android.widget.RemoteViews makeBigContentView();
+    method public android.widget.RemoteViews makeContentView();
+    method public android.widget.RemoteViews makeHeadsUpContentView();
+    method public static android.app.Notification.Builder recoverBuilder(android.content.Context, android.app.Notification);
+    method public android.app.Notification.Builder setActions(android.app.Notification.Action...);
     method public android.app.Notification.Builder setAutoCancel(boolean);
     method public android.app.Notification.Builder setCategory(java.lang.String);
     method public android.app.Notification.Builder setColor(int);
-    method public android.app.Notification.Builder setContent(android.widget.RemoteViews);
+    method public deprecated android.app.Notification.Builder setContent(android.widget.RemoteViews);
     method public android.app.Notification.Builder setContentInfo(java.lang.CharSequence);
     method public android.app.Notification.Builder setContentIntent(android.app.PendingIntent);
     method public android.app.Notification.Builder setContentText(java.lang.CharSequence);
     method public android.app.Notification.Builder setContentTitle(java.lang.CharSequence);
+    method public android.app.Notification.Builder setCustomBigContentView(android.widget.RemoteViews);
+    method public android.app.Notification.Builder setCustomContentView(android.widget.RemoteViews);
+    method public android.app.Notification.Builder setCustomHeadsUpContentView(android.widget.RemoteViews);
     method public android.app.Notification.Builder setDefaults(int);
     method public android.app.Notification.Builder setDeleteIntent(android.app.PendingIntent);
     method public android.app.Notification.Builder setExtras(android.os.Bundle);
diff --git a/api/system-current.txt b/api/system-current.txt
index b996af3..4872337 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -4947,17 +4947,17 @@
     field public android.app.Notification.Action[] actions;
     field public android.media.AudioAttributes audioAttributes;
     field public deprecated int audioStreamType;
-    field public android.widget.RemoteViews bigContentView;
+    field public deprecated android.widget.RemoteViews bigContentView;
     field public java.lang.String category;
     field public int color;
     field public android.app.PendingIntent contentIntent;
-    field public android.widget.RemoteViews contentView;
+    field public deprecated android.widget.RemoteViews contentView;
     field public int defaults;
     field public android.app.PendingIntent deleteIntent;
     field public android.os.Bundle extras;
     field public int flags;
     field public android.app.PendingIntent fullScreenIntent;
-    field public android.widget.RemoteViews headsUpContentView;
+    field public deprecated android.widget.RemoteViews headsUpContentView;
     field public deprecated int icon;
     field public int iconLevel;
     field public deprecated android.graphics.Bitmap largeIcon;
@@ -5048,14 +5048,22 @@
     method public android.app.Notification.Builder extend(android.app.Notification.Extender);
     method public android.os.Bundle getExtras();
     method public deprecated android.app.Notification getNotification();
+    method public android.widget.RemoteViews makeBigContentView();
+    method public android.widget.RemoteViews makeContentView();
+    method public android.widget.RemoteViews makeHeadsUpContentView();
+    method public static android.app.Notification.Builder recoverBuilder(android.content.Context, android.app.Notification);
+    method public android.app.Notification.Builder setActions(android.app.Notification.Action...);
     method public android.app.Notification.Builder setAutoCancel(boolean);
     method public android.app.Notification.Builder setCategory(java.lang.String);
     method public android.app.Notification.Builder setColor(int);
-    method public android.app.Notification.Builder setContent(android.widget.RemoteViews);
+    method public deprecated android.app.Notification.Builder setContent(android.widget.RemoteViews);
     method public android.app.Notification.Builder setContentInfo(java.lang.CharSequence);
     method public android.app.Notification.Builder setContentIntent(android.app.PendingIntent);
     method public android.app.Notification.Builder setContentText(java.lang.CharSequence);
     method public android.app.Notification.Builder setContentTitle(java.lang.CharSequence);
+    method public android.app.Notification.Builder setCustomBigContentView(android.widget.RemoteViews);
+    method public android.app.Notification.Builder setCustomContentView(android.widget.RemoteViews);
+    method public android.app.Notification.Builder setCustomHeadsUpContentView(android.widget.RemoteViews);
     method public android.app.Notification.Builder setDefaults(int);
     method public android.app.Notification.Builder setDeleteIntent(android.app.PendingIntent);
     method public android.app.Notification.Builder setExtras(android.os.Bundle);
diff --git a/core/java/android/app/Notification.java b/core/java/android/app/Notification.java
index db18722..49edff4 100644
--- a/core/java/android/app/Notification.java
+++ b/core/java/android/app/Notification.java
@@ -251,15 +251,26 @@
     public RemoteViews tickerView;
 
     /**
-     * The view that will represent this notification in the expanded status bar.
+     * The view that will represent this notification in the notification list (which is pulled
+     * down from the status bar).
+     *
+     * As of N, this field is not used. The notification view is determined by the inputs to
+     * {@link Notification.Builder}; a custom RemoteViews can optionally be
+     * supplied with {@link Notification.Builder#setCustomContentView(RemoteViews)}.
      */
+    @Deprecated
     public RemoteViews contentView;
 
     /**
      * A large-format version of {@link #contentView}, giving the Notification an
      * opportunity to show more detail. The system UI may choose to show this
      * instead of the normal content view at its discretion.
+     *
+     * As of N, this field is not used. The expanded notification view is determined by the
+     * inputs to {@link Notification.Builder}; a custom RemoteViews can optionally be
+     * supplied with {@link Notification.Builder#setCustomBigContentView(RemoteViews)}.
      */
+    @Deprecated
     public RemoteViews bigContentView;
 
 
@@ -268,7 +279,12 @@
      * opportunity to add action buttons to contentView. At its discretion, the system UI may
      * choose to show this as a heads-up notification, which will pop up so the user can see
      * it without leaving their current activity.
+     *
+     * As of N, this field is not used. The heads-up notification view is determined by the
+     * inputs to {@link Notification.Builder}; a custom RemoteViews can optionally be
+     * supplied with {@link Notification.Builder#setCustomHeadsUpContentView(RemoteViews)}.
      */
+    @Deprecated
     public RemoteViews headsUpContentView;
 
     /**
@@ -867,6 +883,11 @@
     public static final String EXTRA_ORIGINATING_USERID = "android.originatingUserId";
 
     /**
+     * @hide
+     */
+    public static final String EXTRA_BUILDER_APPLICATION_INFO = "android.appInfo";
+
+    /**
      * Value for {@link #EXTRA_AS_HEADS_UP} that indicates this notification should not be
      * displayed in the heads up space.
      *
@@ -1707,8 +1728,6 @@
             extras.remove(Notification.EXTRA_LARGE_ICON_BIG);
             extras.remove(Notification.EXTRA_PICTURE);
             extras.remove(Notification.EXTRA_BIG_TEXT);
-            // Prevent light notifications from being rebuilt.
-            extras.remove(Builder.EXTRA_NEEDS_REBUILD);
         }
     }
 
@@ -1901,21 +1920,13 @@
     @Deprecated
     public void setLatestEventInfo(Context context,
             CharSequence contentTitle, CharSequence contentText, PendingIntent contentIntent) {
-        Notification.Builder builder = new Notification.Builder(context);
+        if (context.getApplicationInfo().targetSdkVersion > Build.VERSION_CODES.LOLLIPOP_MR1){
+            Log.e(TAG, "setLatestEventInfo() is deprecated and you should feel deprecated.",
+                    new Throwable());
+        }
 
-        // First, ensure that key pieces of information that may have been set directly
-        // are preserved
-        builder.setWhen(this.when);
-        builder.setSmallIcon(this.icon);
-        builder.setPriority(this.priority);
-        builder.setTicker(this.tickerText);
-        builder.setNumber(this.number);
-        builder.setColor(this.color);
-        builder.mFlags = this.flags;
-        builder.setSound(this.sound, this.audioStreamType);
-        builder.setDefaults(this.defaults);
-        builder.setVibrate(this.vibrate);
-        builder.setDeleteIntent(this.deleteIntent);
+        // ensure that any information already set directly is preserved
+        final Notification.Builder builder = new Notification.Builder(context, this);
 
         // now apply the latestEventInfo fields
         if (contentTitle != null) {
@@ -1925,7 +1936,8 @@
             builder.setContentText(contentText);
         }
         builder.setContentIntent(contentIntent);
-        builder.buildInto(this);
+
+        builder.build(); // callers expect this notification to be ready to use
     }
 
     @Override
@@ -2080,15 +2092,6 @@
     /**
      * @hide
      */
-    public boolean isValid() {
-        // Would like to check for icon!=0 here, too, but NotificationManagerService accepts that
-        // for legacy reasons.
-        return contentView != null || extras.getBoolean(Builder.EXTRA_REBUILD_CONTENT_VIEW);
-    }
-
-    /**
-     * @hide
-     */
     public boolean isGroupSummary() {
         return mGroupKey != null && (flags & FLAG_GROUP_SUMMARY) != 0;
     }
@@ -2125,99 +2128,14 @@
         private static final int MAX_ACTION_BUTTONS = 3;
         private static final float LARGE_TEXT_SCALE = 1.3f;
 
-        /**
-         * @hide
-         */
-        public static final String EXTRA_NEEDS_REBUILD = "android.rebuild";
-
-        /**
-         * @hide
-         */
-        public static final String EXTRA_REBUILD_LARGE_ICON = "android.rebuild.largeIcon";
-        /**
-         * @hide
-         */
-        public static final String EXTRA_REBUILD_CONTENT_VIEW = "android.rebuild.contentView";
-        /**
-         * @hide
-         */
-        public static final String EXTRA_REBUILD_CONTENT_VIEW_ACTION_COUNT =
-                "android.rebuild.contentViewActionCount";
-        /**
-         * @hide
-         */
-        public static final String EXTRA_REBUILD_BIG_CONTENT_VIEW
-                = "android.rebuild.bigView";
-        /**
-         * @hide
-         */
-        public static final String EXTRA_REBUILD_BIG_CONTENT_VIEW_ACTION_COUNT
-                = "android.rebuild.bigViewActionCount";
-        /**
-         * @hide
-         */
-        public static final String EXTRA_REBUILD_HEADS_UP_CONTENT_VIEW
-                = "android.rebuild.hudView";
-        /**
-         * @hide
-         */
-        public static final String EXTRA_REBUILD_HEADS_UP_CONTENT_VIEW_ACTION_COUNT
-                = "android.rebuild.hudViewActionCount";
-
-        /**
-         * The ApplicationInfo of the package that created the notification, used to create
-         * a context to rebuild the notification via a Builder.
-         * @hide
-         */
-        private static final String EXTRA_REBUILD_CONTEXT_APPLICATION_INFO =
-                "android.rebuild.applicationInfo";
-
-        // Whether to enable stripping (at post time) & rebuilding (at listener receive time) of
-        // memory intensive resources.
-        private static final boolean STRIP_AND_REBUILD = true;
-
         private Context mContext;
-
-        private long mWhen;
-        private Icon mSmallIcon, mLargeIcon;
-        private int mSmallIconLevel;
-        private int mNumber;
-        private CharSequence mContentTitle;
-        private CharSequence mContentText;
-        private CharSequence mContentInfo;
-        private CharSequence mSubText;
-        private PendingIntent mContentIntent;
-        private RemoteViews mContentView;
-        private PendingIntent mDeleteIntent;
-        private PendingIntent mFullScreenIntent;
-        private CharSequence mTickerText;
-        private RemoteViews mTickerView;
-        private Uri mSound;
-        private int mAudioStreamType;
-        private AudioAttributes mAudioAttributes;
-        private long[] mVibrate;
-        private int mLedArgb;
-        private int mLedOnMs;
-        private int mLedOffMs;
-        private int mDefaults;
-        private int mFlags;
-        private int mProgressMax;
-        private int mProgress;
-        private boolean mProgressIndeterminate;
-        private String mCategory;
-        private String mGroupKey;
-        private String mSortKey;
-        private Bundle mExtras;
-        private int mPriority;
-        private ArrayList<Action> mActions = new ArrayList<Action>(MAX_ACTION_BUTTONS);
-        private boolean mUseChronometer;
+        private Notification mN;
+        private Bundle mUserExtras = new Bundle();
         private Style mStyle;
-        private boolean mShowWhen = true;
-        private int mVisibility = VISIBILITY_PRIVATE;
-        private Notification mPublicVersion = null;
-        private final NotificationColorUtil mColorUtil;
-        private ArrayList<String> mPeople;
-        private int mColor = COLOR_DEFAULT;
+        private ArrayList<Action> mActions = new ArrayList<Action>(MAX_ACTION_BUTTONS);
+        private ArrayList<String> mPersonList = new ArrayList<String>();
+        private NotificationColorUtil mColorUtil;
+        private boolean mColorUtilInited = false;
         private List<Topic> mTopics = new ArrayList<>();
 
         /**
@@ -2226,25 +2144,6 @@
         private int mOriginatingUserId;
 
         /**
-         * Contains extras related to rebuilding during the build phase.
-         */
-        private Bundle mRebuildBundle = new Bundle();
-        /**
-         * Contains the notification to rebuild when this Builder is in "rebuild" mode.
-         * Null otherwise.
-         */
-        private Notification mRebuildNotification = null;
-
-        /**
-         * Whether the build notification has three lines. This is used to make the top padding for
-         * both the contracted and expanded layout consistent.
-         *
-         * <p>
-         * This field is only valid during the build phase.
-         */
-        private boolean mHasThreeLines;
-
-        /**
          * Constructs a new Builder with the defaults:
          *
 
@@ -2264,61 +2163,67 @@
          *            object.
          */
         public Builder(Context context) {
-            /*
-             * Important compatibility note!
-             * Some apps out in the wild create a Notification.Builder in their Activity subclass
-             * constructor for later use. At this point Activities - themselves subclasses of
-             * ContextWrapper - do not have their inner Context populated yet. This means that
-             * any calls to Context methods from within this constructor can cause NPEs in existing
-             * apps. Any data populated from mContext should therefore be populated lazily to
-             * preserve compatibility.
-             */
-            mContext = context;
-
-            // Set defaults to match the defaults of a Notification
-            mWhen = System.currentTimeMillis();
-            mAudioStreamType = STREAM_DEFAULT;
-            mAudioAttributes = AUDIO_ATTRIBUTES_DEFAULT;
-            mPriority = PRIORITY_DEFAULT;
-            mPeople = new ArrayList<String>();
-
-            mColorUtil = context.getApplicationInfo().targetSdkVersion < Build.VERSION_CODES.LOLLIPOP ?
-                    NotificationColorUtil.getInstance(mContext) : null;
+            this(context, null);
         }
 
         /**
-         * Creates a Builder for rebuilding the given Notification.
-         * <p>
-         * Call {@link #rebuild()} to retrieve the rebuilt version of 'n'.
+         * @hide
          */
-        private Builder(Context context, Notification n) {
-            this(context);
-            mRebuildNotification = n;
-            restoreFromNotification(n);
+        public Builder(Context context, Notification toAdopt) {
+            mContext = context;
 
-            Style style = null;
-            Bundle extras = n.extras;
-            String templateClass = extras.getString(EXTRA_TEMPLATE);
-            if (!TextUtils.isEmpty(templateClass)) {
-                Class<? extends Style> styleClass = getNotificationStyleClass(templateClass);
-                if (styleClass == null) {
-                    Log.d(TAG, "Unknown style class: " + styleClass);
-                    return;
+            if (toAdopt == null) {
+                mN = new Notification();
+                mN.extras.putBoolean(EXTRA_SHOW_WHEN, true);
+                mN.priority = PRIORITY_DEFAULT;
+                mN.visibility = VISIBILITY_PRIVATE;
+            } else {
+                mN = toAdopt;
+                if (mN.actions != null) {
+                    Collections.addAll(mActions, mN.actions);
                 }
 
-                try {
-                    Constructor<? extends Style> constructor = styleClass.getConstructor();
-                    constructor.setAccessible(true);
-                    style = constructor.newInstance();
-                    style.restoreFromExtras(extras);
-                } catch (Throwable t) {
-                    Log.e(TAG, "Could not create Style", t);
-                    return;
+                if (mN.extras.containsKey(EXTRA_PEOPLE)) {
+                    Collections.addAll(mPersonList, mN.extras.getStringArray(EXTRA_PEOPLE));
+                }
+
+                if (mN.getTopics() != null) {
+                    Collections.addAll(mTopics, mN.getTopics());
+                }
+
+                String templateClass = mN.extras.getString(EXTRA_TEMPLATE);
+                if (!TextUtils.isEmpty(templateClass)) {
+                    final Class<? extends Style> styleClass
+                            = getNotificationStyleClass(templateClass);
+                    if (styleClass == null) {
+                        Log.d(TAG, "Unknown style class: " + templateClass);
+                    } else {
+                        try {
+                            final Constructor<? extends Style> ctor = styleClass.getConstructor();
+                            ctor.setAccessible(true);
+                            final Style style = ctor.newInstance();
+                            style.restoreFromExtras(mN.extras);
+
+                            if (style != null) {
+                                setStyle(style);
+                            }
+                        } catch (Throwable t) {
+                            Log.e(TAG, "Could not create Style", t);
+                        }
+                    }
+                }
+
+            }
+        }
+
+        private NotificationColorUtil getColorUtil() {
+            if (!mColorUtilInited) {
+                mColorUtilInited = true;
+                if (mContext.getApplicationInfo().targetSdkVersion < Build.VERSION_CODES.LOLLIPOP) {
+                    mColorUtil = NotificationColorUtil.getInstance(mContext);
                 }
             }
-            if (style != null) {
-                setStyle(style);
-            }
+            return mColorUtil;
         }
 
         /**
@@ -2329,7 +2234,7 @@
          * @see Notification#when
          */
         public Builder setWhen(long when) {
-            mWhen = when;
+            mN.when = when;
             return this;
         }
 
@@ -2338,7 +2243,7 @@
          * in the content view.
          */
         public Builder setShowWhen(boolean show) {
-            mShowWhen = show;
+            mN.extras.putBoolean(EXTRA_SHOW_WHEN, show);
             return this;
         }
 
@@ -2354,7 +2259,7 @@
          * @see Notification#when
          */
         public Builder setUsesChronometer(boolean b) {
-            mUseChronometer = b;
+            mN.extras.putBoolean(EXTRA_SHOW_CHRONOMETER, b);
             return this;
         }
 
@@ -2390,7 +2295,7 @@
          * @see Notification#iconLevel
          */
         public Builder setSmallIcon(@DrawableRes int icon, int level) {
-            mSmallIconLevel = level;
+            mN.iconLevel = level;
             return setSmallIcon(icon);
         }
 
@@ -2403,7 +2308,10 @@
          * @see Notification#icon
          */
         public Builder setSmallIcon(Icon icon) {
-            mSmallIcon = icon;
+            mN.setSmallIcon(icon);
+            if (icon != null && icon.getType() == Icon.TYPE_RESOURCE) {
+                mN.icon = icon.getResId();
+            }
             return this;
         }
 
@@ -2411,7 +2319,7 @@
          * Set the first line of text in the platform notification template.
          */
         public Builder setContentTitle(CharSequence title) {
-            mContentTitle = safeCharSequence(title);
+            mN.extras.putCharSequence(EXTRA_TITLE, safeCharSequence(title));
             return this;
         }
 
@@ -2419,7 +2327,7 @@
          * Set the second line of text in the platform notification template.
          */
         public Builder setContentText(CharSequence text) {
-            mContentText = safeCharSequence(text);
+            mN.extras.putCharSequence(EXTRA_TEXT, safeCharSequence(text));
             return this;
         }
 
@@ -2429,7 +2337,7 @@
          * same location in the standard template.
          */
         public Builder setSubText(CharSequence text) {
-            mSubText = safeCharSequence(text);
+            mN.extras.putCharSequence(EXTRA_SUB_TEXT, safeCharSequence(text));
             return this;
         }
 
@@ -2439,7 +2347,7 @@
          * font size for readability.
          */
         public Builder setNumber(int number) {
-            mNumber = number;
+            mN.number = number;
             return this;
         }
 
@@ -2450,7 +2358,7 @@
          * right (to the right of a smallIcon if it has been placed there).
          */
         public Builder setContentInfo(CharSequence info) {
-            mContentInfo = safeCharSequence(info);
+            mN.extras.putCharSequence(EXTRA_INFO_TEXT, safeCharSequence(info));
             return this;
         }
 
@@ -2460,19 +2368,52 @@
          * The platform template will represent this using a {@link ProgressBar}.
          */
         public Builder setProgress(int max, int progress, boolean indeterminate) {
-            mProgressMax = max;
-            mProgress = progress;
-            mProgressIndeterminate = indeterminate;
+            mN.extras.putInt(EXTRA_PROGRESS, progress);
+            mN.extras.putInt(EXTRA_PROGRESS_MAX, max);
+            mN.extras.putBoolean(EXTRA_PROGRESS_INDETERMINATE, indeterminate);
             return this;
         }
 
         /**
          * Supply a custom RemoteViews to use instead of the platform template.
          *
-         * @see Notification#contentView
+         * Use {@link #setCustomContentView(RemoteViews)} instead.
          */
+        @Deprecated
         public Builder setContent(RemoteViews views) {
-            mContentView = views;
+            return setCustomContentView(views);
+        }
+
+        /**
+         * Supply custom RemoteViews to use instead of the platform template.
+         *
+         * This will override the layout that would otherwise be constructed by this Builder
+         * object.
+         */
+        public Builder setCustomContentView(RemoteViews contentView) {
+            mN.contentView = contentView;
+            return this;
+        }
+
+        /**
+         * Supply custom RemoteViews to use instead of the platform template in the expanded form.
+         *
+         * This will override the expanded layout that would otherwise be constructed by this
+         * Builder object.
+         */
+        public Builder setCustomBigContentView(RemoteViews contentView) {
+            mN.bigContentView = contentView;
+            return this;
+        }
+
+        /**
+         * Supply custom RemoteViews to use instead of the platform template in the heads up dialog.
+         *
+         * This will override the heads-up layout that would otherwise be constructed by this
+         * Builder object.
+         */
+        public Builder setCustomHeadsUpContentView(RemoteViews contentView) {
+            mN.headsUpContentView = contentView;
             return this;
         }
 
@@ -2488,7 +2429,7 @@
          * @see Notification#contentIntent Notification.contentIntent
          */
         public Builder setContentIntent(PendingIntent intent) {
-            mContentIntent = intent;
+            mN.contentIntent = intent;
             return this;
         }
 
@@ -2498,7 +2439,7 @@
          * @see Notification#deleteIntent
          */
         public Builder setDeleteIntent(PendingIntent intent) {
-            mDeleteIntent = intent;
+            mN.deleteIntent = intent;
             return this;
         }
 
@@ -2523,7 +2464,7 @@
          * @see Notification#fullScreenIntent
          */
         public Builder setFullScreenIntent(PendingIntent intent, boolean highPriority) {
-            mFullScreenIntent = intent;
+            mN.fullScreenIntent = intent;
             setFlag(FLAG_HIGH_PRIORITY, highPriority);
             return this;
         }
@@ -2534,7 +2475,7 @@
          * @see Notification#tickerText
          */
         public Builder setTicker(CharSequence tickerText) {
-            mTickerText = safeCharSequence(tickerText);
+            mN.tickerText = safeCharSequence(tickerText);
             return this;
         }
 
@@ -2544,8 +2485,8 @@
          */
         @Deprecated
         public Builder setTicker(CharSequence tickerText, RemoteViews views) {
-            mTickerText = safeCharSequence(tickerText);
-            mTickerView = views; // we'll save it for you anyway
+            setTicker(tickerText);
+            // views is ignored
             return this;
         }
 
@@ -2568,7 +2509,8 @@
          * badge atop the large icon).
          */
         public Builder setLargeIcon(Icon icon) {
-            mLargeIcon = icon;
+            mN.mLargeIcon = icon;
+            mN.extras.putParcelable(EXTRA_LARGE_ICON, icon);
             return this;
         }
 
@@ -2585,8 +2527,8 @@
          * @see Notification#sound
          */
         public Builder setSound(Uri sound) {
-            mSound = sound;
-            mAudioAttributes = AUDIO_ATTRIBUTES_DEFAULT;
+            mN.sound = sound;
+            mN.audioAttributes = AUDIO_ATTRIBUTES_DEFAULT;
             return this;
         }
 
@@ -2603,8 +2545,8 @@
          */
         @Deprecated
         public Builder setSound(Uri sound, int streamType) {
-            mSound = sound;
-            mAudioStreamType = streamType;
+            mN.sound = sound;
+            mN.audioStreamType = streamType;
             return this;
         }
 
@@ -2619,8 +2561,8 @@
          * @see Notification#sound
          */
         public Builder setSound(Uri sound, AudioAttributes audioAttributes) {
-            mSound = sound;
-            mAudioAttributes = audioAttributes;
+            mN.sound = sound;
+            mN.audioAttributes = audioAttributes;
             return this;
         }
 
@@ -2637,7 +2579,7 @@
          * @see Notification#vibrate
          */
         public Builder setVibrate(long[] pattern) {
-            mVibrate = pattern;
+            mN.vibrate = pattern;
             return this;
         }
 
@@ -2654,9 +2596,9 @@
          * @see Notification#ledOffMS
          */
         public Builder setLights(@ColorInt int argb, int onMs, int offMs) {
-            mLedArgb = argb;
-            mLedOnMs = onMs;
-            mLedOffMs = offMs;
+            mN.ledARGB = argb;
+            mN.ledOnMS = onMs;
+            mN.ledOffMS = offMs;
             return this;
         }
 
@@ -2724,7 +2666,7 @@
          * For all default values, use {@link #DEFAULT_ALL}.
          */
         public Builder setDefaults(int defaults) {
-            mDefaults = defaults;
+            mN.defaults = defaults;
             return this;
         }
 
@@ -2734,7 +2676,7 @@
          * @see Notification#priority
          */
         public Builder setPriority(@Priority int pri) {
-            mPriority = pri;
+            mN.priority = pri;
             return this;
         }
 
@@ -2744,7 +2686,7 @@
          * @see Notification#category
          */
         public Builder setCategory(String category) {
-            mCategory = category;
+            mN.category = category;
             return this;
         }
 
@@ -2771,7 +2713,7 @@
          * @see Notification#EXTRA_PEOPLE
          */
         public Builder addPerson(String uri) {
-            mPeople.add(uri);
+            mPersonList.add(uri);
             return this;
         }
 
@@ -2787,7 +2729,7 @@
          * @return this object for method chaining
          */
         public Builder setGroup(String groupKey) {
-            mGroupKey = groupKey;
+            mN.mGroupKey = groupKey;
             return this;
         }
 
@@ -2816,7 +2758,7 @@
          * @see String#compareTo(String)
          */
         public Builder setSortKey(String sortKey) {
-            mSortKey = sortKey;
+            mN.mSortKey = sortKey;
             return this;
         }
 
@@ -2829,11 +2771,7 @@
          */
         public Builder addExtras(Bundle extras) {
             if (extras != null) {
-                if (mExtras == null) {
-                    mExtras = new Bundle(extras);
-                } else {
-                    mExtras.putAll(extras);
-                }
+                mUserExtras.putAll(extras);
             }
             return this;
         }
@@ -2851,7 +2789,9 @@
          * @see Notification#extras
          */
         public Builder setExtras(Bundle extras) {
-            mExtras = extras;
+            if (extras != null) {
+                mUserExtras = extras;
+            }
             return this;
         }
 
@@ -2866,10 +2806,13 @@
          * @see Notification#extras
          */
         public Bundle getExtras() {
-            if (mExtras == null) {
-                mExtras = new Bundle();
-            }
-            return mExtras;
+            return mUserExtras;
+        }
+
+        private Bundle getAllExtras() {
+            final Bundle saveExtras = (Bundle) mUserExtras.clone();
+            saveExtras.putAll(mN.extras);
+            return saveExtras;
         }
 
         /**
@@ -2918,6 +2861,21 @@
         }
 
         /**
+         * Alter the complete list of actions attached to this notification.
+         * @see #addAction(Action).
+         *
+         * @param actions
+         * @return
+         */
+        public Builder setActions(Action... actions) {
+            mActions.clear();
+            for (int i = 0; i < actions.length; i++) {
+                mActions.add(actions[i]);
+            }
+            return this;
+        }
+
+        /**
          * Add a rich notification style to be applied at build time.
          *
          * @param style Object responsible for modifying the notification style.
@@ -2927,6 +2885,9 @@
                 mStyle = style;
                 if (mStyle != null) {
                     mStyle.setBuilder(this);
+                    mN.extras.putString(EXTRA_TEMPLATE, style.getClass().getName());
+                }  else {
+                    mN.extras.remove(EXTRA_TEMPLATE);
                 }
             }
             return this;
@@ -2941,7 +2902,7 @@
          * @return The same Builder.
          */
         public Builder setVisibility(int visibility) {
-            mVisibility = visibility;
+            mN.visibility = visibility;
             return this;
         }
 
@@ -2952,7 +2913,12 @@
          * @return The same Builder.
          */
         public Builder setPublicVersion(Notification n) {
-            mPublicVersion = n;
+            if (n != null) {
+                mN.publicVersion = new Notification();
+                n.cloneInto(mN.publicVersion, /*heavy=*/ true);
+            } else {
+                mN.publicVersion = null;
+            }
             return this;
         }
 
@@ -2970,9 +2936,9 @@
          */
         public void setFlag(int mask, boolean value) {
             if (value) {
-                mFlags |= mask;
+                mN.flags |= mask;
             } else {
-                mFlags &= ~mask;
+                mN.flags &= ~mask;
             }
         }
 
@@ -2984,7 +2950,7 @@
          * @return The same Builder.
          */
         public Builder setColor(@ColorInt int argb) {
-            mColor = argb;
+            mN.color = argb;
             return this;
         }
 
@@ -3075,7 +3041,6 @@
             contentView.setViewVisibility(R.id.overflow_divider, View.GONE);
             contentView.setViewVisibility(R.id.progress, View.GONE);
             contentView.setViewVisibility(R.id.chronometer, View.GONE);
-            contentView.setViewVisibility(R.id.time, View.GONE);
         }
 
         private RemoteViews applyStandardTemplate(int resId) {
@@ -3093,39 +3058,43 @@
             boolean showLine3 = false;
             boolean showLine2 = false;
             boolean contentTextInLine2 = false;
+            final Bundle ex = mN.extras;
 
-            if (mLargeIcon != null) {
-                contentView.setImageViewIcon(R.id.icon, mLargeIcon);
-                processLargeLegacyIcon(mLargeIcon, contentView);
-                contentView.setImageViewIcon(R.id.right_icon, mSmallIcon);
+            if (mN.mLargeIcon != null) {
+                contentView.setImageViewIcon(R.id.icon, mN.mLargeIcon);
+                processLargeLegacyIcon(mN.mLargeIcon, contentView);
+                contentView.setImageViewIcon(R.id.right_icon, mN.mSmallIcon);
                 contentView.setViewVisibility(R.id.right_icon, View.VISIBLE);
-                processSmallRightIcon(mSmallIcon, contentView);
+                processSmallRightIcon(mN.mSmallIcon, contentView);
             } else { // small icon at left
-                contentView.setImageViewIcon(R.id.icon, mSmallIcon);
+                contentView.setImageViewIcon(R.id.icon, mN.mSmallIcon);
                 contentView.setViewVisibility(R.id.icon, View.VISIBLE);
-                processSmallIconAsLarge(mSmallIcon, contentView);
+                processSmallIconAsLarge(mN.mSmallIcon, contentView);
             }
-            if (mContentTitle != null) {
-                contentView.setTextViewText(R.id.title, processLegacyText(mContentTitle));
+            if (ex.getCharSequence(EXTRA_TITLE) != null) {
+                contentView.setTextViewText(R.id.title,
+                        processLegacyText(ex.getCharSequence(EXTRA_TITLE)));
             }
-            if (mContentText != null) {
-                contentView.setTextViewText(R.id.text, processLegacyText(mContentText));
+            if (ex.getCharSequence(EXTRA_TEXT) != null) {
+                contentView.setTextViewText(R.id.text,
+                        processLegacyText(ex.getCharSequence(EXTRA_TEXT)));
                 showLine3 = true;
             }
-            if (mContentInfo != null) {
-                contentView.setTextViewText(R.id.info, processLegacyText(mContentInfo));
+            if (ex.getCharSequence(EXTRA_INFO_TEXT) != null) {
+                contentView.setTextViewText(R.id.info,
+                        processLegacyText(ex.getCharSequence(EXTRA_INFO_TEXT)));
                 contentView.setViewVisibility(R.id.info, View.VISIBLE);
                 showLine3 = true;
-            } else if (mNumber > 0) {
+            } else if (mN.number > 0) {
                 final int tooBig = mContext.getResources().getInteger(
                         R.integer.status_bar_notification_info_maxnum);
-                if (mNumber > tooBig) {
+                if (mN.number > tooBig) {
                     contentView.setTextViewText(R.id.info, processLegacyText(
                             mContext.getResources().getString(
                                     R.string.status_bar_notification_info_overflow)));
                 } else {
                     NumberFormat f = NumberFormat.getIntegerInstance();
-                    contentView.setTextViewText(R.id.info, processLegacyText(f.format(mNumber)));
+                    contentView.setTextViewText(R.id.info, processLegacyText(f.format(mN.number)));
                 }
                 contentView.setViewVisibility(R.id.info, View.VISIBLE);
                 showLine3 = true;
@@ -3134,10 +3103,12 @@
             }
 
             // Need to show three lines?
-            if (mSubText != null) {
-                contentView.setTextViewText(R.id.text, processLegacyText(mSubText));
-                if (mContentText != null) {
-                    contentView.setTextViewText(R.id.text2, processLegacyText(mContentText));
+            if (ex.getCharSequence(EXTRA_SUB_TEXT) != null) {
+                contentView.setTextViewText(R.id.text,
+                        processLegacyText(ex.getCharSequence(EXTRA_SUB_TEXT)));
+                if (ex.getCharSequence(EXTRA_TEXT) != null) {
+                    contentView.setTextViewText(R.id.text2,
+                            processLegacyText(ex.getCharSequence(EXTRA_TEXT)));
                     contentView.setViewVisibility(R.id.text2, View.VISIBLE);
                     showLine2 = true;
                     contentTextInLine2 = true;
@@ -3146,15 +3117,18 @@
                 }
             } else {
                 contentView.setViewVisibility(R.id.text2, View.GONE);
-                if (hasProgress && (mProgressMax != 0 || mProgressIndeterminate)) {
+                final int max = ex.getInt(EXTRA_PROGRESS_MAX, 0);
+                final int progress = ex.getInt(EXTRA_PROGRESS, 0);
+                final boolean ind = ex.getBoolean(EXTRA_PROGRESS_INDETERMINATE);
+                if (hasProgress && (max != 0 || ind)) {
                     contentView.setViewVisibility(R.id.progress, View.VISIBLE);
                     contentView.setProgressBar(
-                            R.id.progress, mProgressMax, mProgress, mProgressIndeterminate);
+                            R.id.progress, max, progress, ind);
                     contentView.setProgressBackgroundTintList(
                             R.id.progress, ColorStateList.valueOf(mContext.getColor(
                                     R.color.notification_progress_background_color)));
-                    if (mColor != COLOR_DEFAULT) {
-                        ColorStateList colorStateList = ColorStateList.valueOf(mColor);
+                    if (mN.color != COLOR_DEFAULT) {
+                        ColorStateList colorStateList = ColorStateList.valueOf(mN.color);
                         contentView.setProgressTintList(R.id.progress, colorStateList);
                         contentView.setProgressIndeterminateTintList(R.id.progress, colorStateList);
                     }
@@ -3170,20 +3144,21 @@
             }
 
             if (showsTimeOrChronometer()) {
-                if (mUseChronometer) {
+                if (ex.getBoolean(EXTRA_SHOW_CHRONOMETER)) {
                     contentView.setViewVisibility(R.id.chronometer, View.VISIBLE);
                     contentView.setLong(R.id.chronometer, "setBase",
-                            mWhen + (SystemClock.elapsedRealtime() - System.currentTimeMillis()));
+                            mN.when + (SystemClock.elapsedRealtime() - System.currentTimeMillis()));
                     contentView.setBoolean(R.id.chronometer, "setStarted", true);
                 } else {
                     contentView.setViewVisibility(R.id.time, View.VISIBLE);
-                    contentView.setLong(R.id.time, "setTime", mWhen);
+                    contentView.setLong(R.id.time, "setTime", mN.when);
                 }
             }
 
             // Adjust padding depending on line count and font size.
-            contentView.setViewPadding(R.id.line1, 0, calculateTopPadding(mContext,
-                    mHasThreeLines, mContext.getResources().getConfiguration().fontScale),
+            contentView.setViewPadding(R.id.line1, 0,
+                    calculateTopPadding(mContext, hasThreeLines(),
+                            mContext.getResources().getConfiguration().fontScale),
                     0, 0);
 
             // We want to add badge to first line of text.
@@ -3196,7 +3171,8 @@
 
             // Note getStandardView may hide line 3 again.
             contentView.setViewVisibility(R.id.line3, showLine3 ? View.VISIBLE : View.GONE);
-            contentView.setViewVisibility(R.id.overflow_divider, showLine3 ? View.VISIBLE : View.GONE);
+            contentView.setViewVisibility(R.id.overflow_divider,
+                    showLine3 ? View.VISIBLE : View.GONE);
             return contentView;
         }
 
@@ -3205,7 +3181,7 @@
          *         otherwise
          */
         private boolean showsTimeOrChronometer() {
-            return mWhen != 0 && mShowWhen;
+            return mN.when != 0 && mN.extras.getBoolean(EXTRA_SHOW_WHEN);
         }
 
         /**
@@ -3216,15 +3192,19 @@
          *         is going to have one or two lines
          */
         private boolean hasThreeLines() {
-            boolean contentTextInLine2 = mSubText != null && mContentText != null;
+            final CharSequence subText = mN.extras.getCharSequence(EXTRA_SUB_TEXT);
+            final CharSequence text = mN.extras.getCharSequence(EXTRA_TEXT);
+            boolean contentTextInLine2 = subText != null && text != null;
             boolean hasProgress = mStyle == null || mStyle.hasProgress();
             // If we have content text in line 2, badge goes into line 2, or line 3 otherwise
             boolean badgeInLine3 = getProfileBadgeDrawable() != null && !contentTextInLine2;
-            boolean hasLine3 = mContentText != null || mContentInfo != null || mNumber > 0
-                    || badgeInLine3;
-            boolean hasLine2 = (mSubText != null && mContentText != null) ||
-                    (hasProgress && mSubText == null
-                            && (mProgressMax != 0 || mProgressIndeterminate));
+            boolean hasLine3 = text != null || mN.extras.getCharSequence(EXTRA_INFO_TEXT) != null
+                    || mN.number > 0 || badgeInLine3;
+            final Bundle ex = mN.extras;
+            final int max = ex.getInt(EXTRA_PROGRESS_MAX, 0);
+            final boolean ind = ex.getBoolean(EXTRA_PROGRESS_INDETERMINATE);
+            boolean hasLine2 = (subText != null && text != null) ||
+                    (hasProgress && subText == null && (max != 0 || ind));
             return hasLine2 && hasLine3;
         }
 
@@ -3271,29 +3251,48 @@
             return big;
         }
 
-        private RemoteViews makeContentView() {
-            if (mContentView != null) {
-                return mContentView;
-            } else {
-                return applyStandardTemplate(getBaseLayoutResource());
+        /**
+         * Construct a RemoteViews for the final 1U notification layout. In order:
+         *   1. Custom contentView from the caller
+         *   2. Style's proposed content view
+         *   3. Standard template view
+         */
+        public RemoteViews makeContentView() {
+            if (mN.contentView != null) {
+                return mN.contentView;
+            } else if (mStyle != null) {
+                final RemoteViews styleView = mStyle.makeContentView();
+                if (styleView != null) {
+                    return styleView;
+                }
             }
+            return applyStandardTemplate(getBaseLayoutResource());
         }
 
-        private RemoteViews makeTickerView() {
-            if (mTickerView != null) {
-                return mTickerView;
-            }
-            return null; // tickers are not created by default anymore
-        }
-
-        private RemoteViews makeBigContentView() {
-            if (mActions.size() == 0) return null;
+        /**
+         * Construct a RemoteViews for the final big notification layout.
+         */
+        public RemoteViews makeBigContentView() {
+            if (mStyle != null) {
+                final RemoteViews styleView = mStyle.makeBigContentView();
+                if (styleView != null) {
+                    return styleView;
+                }
+            } else if (mActions.size() == 0) return null;
 
             return applyStandardTemplateWithActions(getBigBaseLayoutResource());
         }
 
-        private RemoteViews makeHeadsUpContentView() {
-            if (mActions.size() == 0) return null;
+        /**
+         * Construct a RemoteViews for the final heads-up notification layout.
+         */
+        public RemoteViews makeHeadsUpContentView() {
+            if (mStyle != null) {
+                final RemoteViews styleView = mStyle.makeHeadsUpContentView();
+                if (styleView != null) {
+                    return styleView;
+                }
+            } else if (mActions.size() == 0) return null;
 
             return applyStandardTemplateWithActions(getBigBaseLayoutResource());
         }
@@ -3320,11 +3319,11 @@
          *         doesn't create material notifications by itself) app.
          */
         private boolean isLegacy() {
-            return mColorUtil != null;
+            return getColorUtil() != null;
         }
 
         private void processLegacyAction(Action action, RemoteViews button) {
-            if (!isLegacy() || mColorUtil.isGrayscaleIcon(mContext, action.getIcon())) {
+            if (!isLegacy() || getColorUtil().isGrayscaleIcon(mContext, action.getIcon())) {
                 button.setTextViewCompoundDrawablesRelativeColorFilter(R.id.action0, 0,
                         mContext.getColor(R.color.notification_action_color_filter),
                         PorterDuff.Mode.MULTIPLY);
@@ -3333,7 +3332,7 @@
 
         private CharSequence processLegacyText(CharSequence charSequence) {
             if (isLegacy()) {
-                return mColorUtil.invertCharSequenceColors(charSequence);
+                return getColorUtil().invertCharSequenceColors(charSequence);
             } else {
                 return charSequence;
             }
@@ -3349,7 +3348,7 @@
                         PorterDuff.Mode.SRC_ATOP, -1);
                 applyLargeIconBackground(contentView);
             } else {
-                if (mColorUtil.isGrayscaleIcon(mContext, largeIcon)) {
+                if (getColorUtil().isGrayscaleIcon(mContext, largeIcon)) {
                     applyLargeIconBackground(contentView);
                 }
             }
@@ -3362,7 +3361,7 @@
         // TODO: also check bounds, transparency, that sort of thing.
         private void processLargeLegacyIcon(Icon largeIcon, RemoteViews contentView) {
             if (largeIcon != null && isLegacy()
-                    && mColorUtil.isGrayscaleIcon(mContext, largeIcon)) {
+                    && getColorUtil().isGrayscaleIcon(mContext, largeIcon)) {
                 applyLargeIconBackground(contentView);
             } else {
                 removeLargeIconBackground(contentView);
@@ -3404,7 +3403,7 @@
             }
             final boolean gray = isLegacy()
                     && smallIcon.getType() == Icon.TYPE_RESOURCE
-                    && mColorUtil.isGrayscaleIcon(mContext, smallIcon.getResId());
+                    && getColorUtil().isGrayscaleIcon(mContext, smallIcon.getResId());
             if (!isLegacy() || gray) {
                 contentView.setInt(R.id.right_icon,
                         "setBackgroundResource",
@@ -3421,17 +3420,17 @@
         }
 
         private int sanitizeColor() {
-            if (mColor != COLOR_DEFAULT) {
-                mColor |= 0xFF000000; // no alpha for custom colors
+            if (mN.color != COLOR_DEFAULT) {
+                mN.color |= 0xFF000000; // no alpha for custom colors
             }
-            return mColor;
+            return mN.color;
         }
 
         private int resolveColor() {
-            if (mColor == COLOR_DEFAULT) {
+            if (mN.color == COLOR_DEFAULT) {
                 return mContext.getColor(R.color.notification_icon_bg_color);
             }
-            return mColor;
+            return mN.color;
         }
 
         /**
@@ -3439,165 +3438,25 @@
          * @hide
          */
         public Notification buildUnstyled() {
-            Notification n = new Notification();
-            n.when = mWhen;
-            n.mSmallIcon = mSmallIcon;
-            if (mSmallIcon != null && mSmallIcon.getType() == Icon.TYPE_RESOURCE) {
-                n.icon = mSmallIcon.getResId();
-            }
-            n.iconLevel = mSmallIconLevel;
-            n.number = mNumber;
-
-            n.color = sanitizeColor();
-
-            setBuilderContentView(n, makeContentView());
-            n.contentIntent = mContentIntent;
-            n.deleteIntent = mDeleteIntent;
-            n.fullScreenIntent = mFullScreenIntent;
-            n.tickerText = mTickerText;
-            n.tickerView = makeTickerView();
-            n.mLargeIcon = mLargeIcon;
-            if (mLargeIcon != null && mLargeIcon.getType() == Icon.TYPE_BITMAP) {
-                n.largeIcon = mLargeIcon.getBitmap();
-            }
-            n.sound = mSound;
-            n.audioStreamType = mAudioStreamType;
-            n.audioAttributes = mAudioAttributes;
-            n.vibrate = mVibrate;
-            n.ledARGB = mLedArgb;
-            n.ledOnMS = mLedOnMs;
-            n.ledOffMS = mLedOffMs;
-            n.defaults = mDefaults;
-            n.flags = mFlags;
-            setBuilderBigContentView(n, makeBigContentView());
-            setBuilderHeadsUpContentView(n, makeHeadsUpContentView());
-            if (mLedOnMs != 0 || mLedOffMs != 0) {
-                n.flags |= FLAG_SHOW_LIGHTS;
-            }
-            if ((mDefaults & DEFAULT_LIGHTS) != 0) {
-                n.flags |= FLAG_SHOW_LIGHTS;
-            }
-            n.category = mCategory;
-            n.mGroupKey = mGroupKey;
-            n.mSortKey = mSortKey;
-            n.priority = mPriority;
             if (mActions.size() > 0) {
-                n.actions = new Action[mActions.size()];
-                mActions.toArray(n.actions);
+                mN.actions = new Action[mActions.size()];
+                mActions.toArray(mN.actions);
             }
-            n.visibility = mVisibility;
-
-            if (mPublicVersion != null) {
-                n.publicVersion = new Notification();
-                mPublicVersion.cloneInto(n.publicVersion, true);
+            if (!mPersonList.isEmpty()) {
+                mN.extras.putStringArray(EXTRA_PEOPLE,
+                        mPersonList.toArray(new String[mPersonList.size()]));
             }
             if (mTopics.size() > 0) {
-                n.topics = new Topic[mTopics.size()];
-                mTopics.toArray(n.topics);
+                mN.topics = new Topic[mTopics.size()];
+                mTopics.toArray(mN.topics);
             }
-            // Note: If you're adding new fields, also update restoreFromNotitification().
-            return n;
+            return mN;
         }
 
-        /**
-         * Capture, in the provided bundle, semantic information used in the construction of
-         * this Notification object.
-         * @hide
-         */
-        public void populateExtras(Bundle extras) {
-            // Store original information used in the construction of this object
-            extras.putInt(EXTRA_ORIGINATING_USERID, mOriginatingUserId);
-            extras.putParcelable(EXTRA_REBUILD_CONTEXT_APPLICATION_INFO,
-                    mContext.getApplicationInfo());
-            extras.putCharSequence(EXTRA_TITLE, mContentTitle);
-            extras.putCharSequence(EXTRA_TEXT, mContentText);
-            extras.putCharSequence(EXTRA_SUB_TEXT, mSubText);
-            extras.putCharSequence(EXTRA_INFO_TEXT, mContentInfo);
-            extras.putParcelable(EXTRA_SMALL_ICON, mSmallIcon);
-            extras.putInt(EXTRA_PROGRESS, mProgress);
-            extras.putInt(EXTRA_PROGRESS_MAX, mProgressMax);
-            extras.putBoolean(EXTRA_PROGRESS_INDETERMINATE, mProgressIndeterminate);
-            extras.putBoolean(EXTRA_SHOW_CHRONOMETER, mUseChronometer);
-            extras.putBoolean(EXTRA_SHOW_WHEN, mShowWhen);
-            if (mLargeIcon != null) {
-                extras.putParcelable(EXTRA_LARGE_ICON, mLargeIcon);
-            }
-            if (!mPeople.isEmpty()) {
-                extras.putStringArray(EXTRA_PEOPLE, mPeople.toArray(new String[mPeople.size()]));
-            }
-            // NOTE: If you're adding new extras also update restoreFromNotification().
-        }
-
-
-        /**
-         * @hide
-         */
-        public static void stripForDelivery(Notification n) {
-            if (!STRIP_AND_REBUILD) {
-                return;
-            }
-
-            String templateClass = n.extras.getString(EXTRA_TEMPLATE);
-            // Only strip views for known Styles because we won't know how to
-            // re-create them otherwise.
-            boolean stripViews = TextUtils.isEmpty(templateClass) ||
-                    getNotificationStyleClass(templateClass) != null;
-
-            boolean isStripped = false;
-
-            if (n.largeIcon != null && n.extras.containsKey(EXTRA_LARGE_ICON)) {
-                // TODO: Would like to check for equality here, but if the notification
-                // has been cloned, we can't.
-                n.largeIcon = null;
-                n.extras.putBoolean(EXTRA_REBUILD_LARGE_ICON, true);
-                isStripped = true;
-            }
-            // Get rid of unmodified BuilderRemoteViews.
-
-            if (stripViews &&
-                    n.contentView instanceof BuilderRemoteViews &&
-                    n.extras.getInt(EXTRA_REBUILD_CONTENT_VIEW_ACTION_COUNT, -1) ==
-                            n.contentView.getSequenceNumber()) {
-                n.contentView = null;
-                n.extras.putBoolean(EXTRA_REBUILD_CONTENT_VIEW, true);
-                n.extras.remove(EXTRA_REBUILD_CONTENT_VIEW_ACTION_COUNT);
-                isStripped = true;
-            }
-            if (stripViews &&
-                    n.bigContentView instanceof BuilderRemoteViews &&
-                    n.extras.getInt(EXTRA_REBUILD_BIG_CONTENT_VIEW_ACTION_COUNT, -1) ==
-                            n.bigContentView.getSequenceNumber()) {
-                n.bigContentView = null;
-                n.extras.putBoolean(EXTRA_REBUILD_BIG_CONTENT_VIEW, true);
-                n.extras.remove(EXTRA_REBUILD_BIG_CONTENT_VIEW_ACTION_COUNT);
-                isStripped = true;
-            }
-            if (stripViews &&
-                    n.headsUpContentView instanceof BuilderRemoteViews &&
-                    n.extras.getInt(EXTRA_REBUILD_HEADS_UP_CONTENT_VIEW_ACTION_COUNT, -1) ==
-                            n.headsUpContentView.getSequenceNumber()) {
-                n.headsUpContentView = null;
-                n.extras.putBoolean(EXTRA_REBUILD_HEADS_UP_CONTENT_VIEW, true);
-                n.extras.remove(EXTRA_REBUILD_HEADS_UP_CONTENT_VIEW_ACTION_COUNT);
-                isStripped = true;
-            }
-
-            if (isStripped) {
-                n.extras.putBoolean(EXTRA_NEEDS_REBUILD, true);
-            }
-        }
-
-        /**
-         * @hide
-         */
-        public static Notification rebuild(Context context, Notification n) {
-            Bundle extras = n.extras;
-            if (!extras.getBoolean(EXTRA_NEEDS_REBUILD)) return n;
-            extras.remove(EXTRA_NEEDS_REBUILD);
-
+        public static Notification.Builder recoverBuilder(Context context, Notification n) {
             // Re-create notification context so we can access app resources.
-            ApplicationInfo applicationInfo = extras.getParcelable(
-                    EXTRA_REBUILD_CONTEXT_APPLICATION_INFO);
+            ApplicationInfo applicationInfo = n.extras.getParcelable(
+                    EXTRA_BUILDER_APPLICATION_INFO);
             Context builderContext;
             try {
                 builderContext = context.createApplicationContext(applicationInfo,
@@ -3607,58 +3466,7 @@
                 builderContext = context;  // try with our context
             }
 
-            Builder b = new Builder(builderContext, n);
-            return b.rebuild();
-        }
-
-        /**
-         * Rebuilds the notification passed in to the rebuild-constructor
-         * {@link #Builder(Context, Notification)}.
-         *
-         * <p>
-         * Throws IllegalStateException when invoked on a Builder that isn't in rebuild mode.
-         *
-         * @hide
-         */
-        private Notification rebuild() {
-            if (mRebuildNotification == null) {
-                throw new IllegalStateException("rebuild() only valid when in 'rebuild' mode.");
-            }
-            mHasThreeLines = hasThreeLines();
-
-            Bundle extras = mRebuildNotification.extras;
-
-            if (extras.getBoolean(EXTRA_REBUILD_LARGE_ICON)) {
-                mRebuildNotification.largeIcon = extras.getParcelable(EXTRA_LARGE_ICON);
-            }
-            extras.remove(EXTRA_REBUILD_LARGE_ICON);
-
-            if (extras.getBoolean(EXTRA_REBUILD_CONTENT_VIEW)) {
-                setBuilderContentView(mRebuildNotification, makeContentView());
-                if (mStyle != null) {
-                    mStyle.populateContentView(mRebuildNotification);
-                }
-            }
-            extras.remove(EXTRA_REBUILD_CONTENT_VIEW);
-
-            if (extras.getBoolean(EXTRA_REBUILD_BIG_CONTENT_VIEW)) {
-                setBuilderBigContentView(mRebuildNotification, makeBigContentView());
-                if (mStyle != null) {
-                    mStyle.populateBigContentView(mRebuildNotification);
-                }
-            }
-            extras.remove(EXTRA_REBUILD_BIG_CONTENT_VIEW);
-
-            if (extras.getBoolean(EXTRA_REBUILD_HEADS_UP_CONTENT_VIEW)) {
-                setBuilderHeadsUpContentView(mRebuildNotification, makeHeadsUpContentView());
-                if (mStyle != null) {
-                    mStyle.populateHeadsUpContentView(mRebuildNotification);
-                }
-            }
-            extras.remove(EXTRA_REBUILD_HEADS_UP_CONTENT_VIEW);
-
-            mHasThreeLines = false;
-            return mRebuildNotification;
+            return new Builder(builderContext, n);
         }
 
         private static Class<? extends Style> getNotificationStyleClass(String templateClass) {
@@ -3674,91 +3482,15 @@
 
         private void setBuilderContentView(Notification n, RemoteViews contentView) {
             n.contentView = contentView;
-            if (contentView instanceof BuilderRemoteViews) {
-                mRebuildBundle.putInt(Builder.EXTRA_REBUILD_CONTENT_VIEW_ACTION_COUNT,
-                        contentView.getSequenceNumber());
-            }
         }
 
         private void setBuilderBigContentView(Notification n, RemoteViews bigContentView) {
             n.bigContentView = bigContentView;
-            if (bigContentView instanceof BuilderRemoteViews) {
-                mRebuildBundle.putInt(Builder.EXTRA_REBUILD_BIG_CONTENT_VIEW_ACTION_COUNT,
-                        bigContentView.getSequenceNumber());
-            }
         }
 
         private void setBuilderHeadsUpContentView(Notification n,
                 RemoteViews headsUpContentView) {
             n.headsUpContentView = headsUpContentView;
-            if (headsUpContentView instanceof BuilderRemoteViews) {
-                mRebuildBundle.putInt(Builder.EXTRA_REBUILD_HEADS_UP_CONTENT_VIEW_ACTION_COUNT,
-                        headsUpContentView.getSequenceNumber());
-            }
-        }
-
-        private void restoreFromNotification(Notification n) {
-
-            // Notification fields.
-            mWhen = n.when;
-            mSmallIcon = n.mSmallIcon;
-            mSmallIconLevel = n.iconLevel;
-            mNumber = n.number;
-
-            mColor = n.color;
-
-            mContentView = n.contentView;
-            mDeleteIntent = n.deleteIntent;
-            mFullScreenIntent = n.fullScreenIntent;
-            mTickerText = n.tickerText;
-            mTickerView = n.tickerView;
-            mLargeIcon = n.mLargeIcon;
-            mSound = n.sound;
-            mAudioStreamType = n.audioStreamType;
-            mAudioAttributes = n.audioAttributes;
-
-            mVibrate = n.vibrate;
-            mLedArgb = n.ledARGB;
-            mLedOnMs = n.ledOnMS;
-            mLedOffMs = n.ledOffMS;
-            mDefaults = n.defaults;
-            mFlags = n.flags;
-
-            mCategory = n.category;
-            mGroupKey = n.mGroupKey;
-            mSortKey = n.mSortKey;
-            mPriority = n.priority;
-            mActions.clear();
-            if (n.actions != null) {
-                Collections.addAll(mActions, n.actions);
-            }
-            mVisibility = n.visibility;
-
-            mPublicVersion = n.publicVersion;
-
-            if (n.topics != null) {
-                Collections.addAll(mTopics, n.topics);
-            }
-
-            // Extras.
-            Bundle extras = n.extras;
-            mOriginatingUserId = extras.getInt(EXTRA_ORIGINATING_USERID);
-            mContentTitle = extras.getCharSequence(EXTRA_TITLE);
-            mContentText = extras.getCharSequence(EXTRA_TEXT);
-            mSubText = extras.getCharSequence(EXTRA_SUB_TEXT);
-            mContentInfo = extras.getCharSequence(EXTRA_INFO_TEXT);
-            mProgress = extras.getInt(EXTRA_PROGRESS);
-            mProgressMax = extras.getInt(EXTRA_PROGRESS_MAX);
-            mProgressIndeterminate = extras.getBoolean(EXTRA_PROGRESS_INDETERMINATE);
-            mUseChronometer = extras.getBoolean(EXTRA_SHOW_CHRONOMETER);
-            mShowWhen = extras.getBoolean(EXTRA_SHOW_WHEN);
-            if (extras.containsKey(EXTRA_LARGE_ICON)) {
-                mLargeIcon = extras.getParcelable(EXTRA_LARGE_ICON);
-            }
-            if (extras.containsKey(EXTRA_PEOPLE)) {
-                mPeople.clear();
-                Collections.addAll(mPeople, extras.getStringArray(EXTRA_PEOPLE));
-            }
         }
 
         /**
@@ -3774,38 +3506,23 @@
          * object.
          */
         public Notification build() {
-            if (mSmallIcon != null) {
-                mSmallIcon.convertToAshmem();
+            // first, add any extras from the calling code
+            if (mUserExtras != null) {
+                mN.extras = getAllExtras();
             }
-            if (mLargeIcon != null) {
-                mLargeIcon.convertToAshmem();
-            }
+
+            // lazy stuff from mContext; see comment in Builder(Context, Notification)
+            mN.extras.putParcelable(EXTRA_BUILDER_APPLICATION_INFO, mContext.getApplicationInfo());
             mOriginatingUserId = mContext.getUserId();
-            mHasThreeLines = hasThreeLines();
+            mN.extras.putInt(EXTRA_ORIGINATING_USERID, mOriginatingUserId);
 
-            Notification n = buildUnstyled();
+            buildUnstyled();
 
             if (mStyle != null) {
-                mStyle.purgeResources();
-                n = mStyle.buildStyled(n);
+                mStyle.buildStyled(mN);
             }
 
-            if (mExtras != null) {
-                n.extras.putAll(mExtras);
-            }
-
-            if (mRebuildBundle.size() > 0) {
-                n.extras.putAll(mRebuildBundle);
-                mRebuildBundle.clear();
-            }
-
-            populateExtras(n.extras);
-            if (mStyle != null) {
-                mStyle.addExtras(n.extras);
-            }
-
-            mHasThreeLines = false;
-            return n;
+            return mN;
         }
 
         /**
@@ -3901,14 +3618,15 @@
             checkBuilder();
 
             // Nasty.
-            CharSequence oldBuilderContentTitle = mBuilder.mContentTitle;
+            CharSequence oldBuilderContentTitle =
+                    mBuilder.getAllExtras().getCharSequence(EXTRA_TITLE);
             if (mBigContentTitle != null) {
                 mBuilder.setContentTitle(mBigContentTitle);
             }
 
             RemoteViews contentView = mBuilder.applyStandardTemplateWithActions(layoutId);
 
-            mBuilder.mContentTitle = oldBuilderContentTitle;
+            mBuilder.getAllExtras().putCharSequence(EXTRA_TITLE, oldBuilderContentTitle);
 
             if (mBigContentTitle != null && mBigContentTitle.equals("")) {
                 contentView.setViewVisibility(R.id.line1, View.GONE);
@@ -3919,7 +3637,7 @@
             // The last line defaults to the subtext, but can be replaced by mSummaryText
             final CharSequence overflowText =
                     mSummaryTextSet ? mSummaryText
-                                    : mBuilder.mSubText;
+                                    : mBuilder.getAllExtras().getCharSequence(EXTRA_SUB_TEXT);
             if (overflowText != null) {
                 contentView.setTextViewText(R.id.text, mBuilder.processLegacyText(overflowText));
                 contentView.setViewVisibility(R.id.overflow_divider, View.VISIBLE);
@@ -3935,6 +3653,31 @@
         }
 
         /**
+         * Construct a Style-specific RemoteViews for the final 1U notification layout.
+         * The default implementation has nothing additional to add.
+         * @hide
+         */
+        public RemoteViews makeContentView() {
+            return null;
+        }
+
+        /**
+         * Construct a Style-specific RemoteViews for the final big notification layout.
+         * @hide
+         */
+        public RemoteViews makeBigContentView() {
+            return null;
+        }
+
+        /**
+         * Construct a Style-specific RemoteViews for the final HUN layout.
+         * @hide
+         */
+        public RemoteViews makeHeadsUpContentView() {
+            return null;
+        }
+
+        /**
          * Changes the padding of the first line such that the big and small content view have the
          * same top padding.
          *
@@ -3942,12 +3685,13 @@
          */
         protected void applyTopPadding(RemoteViews contentView) {
             int topPadding = Builder.calculateTopPadding(mBuilder.mContext,
-                    mBuilder.mHasThreeLines,
+                    mBuilder.hasThreeLines(),
                     mBuilder.mContext.getResources().getConfiguration().fontScale);
             contentView.setViewPadding(R.id.line1, 0, topPadding, 0, 0);
         }
 
         /**
+         * Apply any style-specific extras to this notification before shipping it out.
          * @hide
          */
         public void addExtras(Bundle extras) {
@@ -3961,6 +3705,7 @@
         }
 
         /**
+         * Reconstruct the internal state of this Style object from extras.
          * @hide
          */
         protected void restoreFromExtras(Bundle extras) {
@@ -3978,10 +3723,7 @@
          * @hide
          */
         public Notification buildStyled(Notification wip) {
-            populateTickerView(wip);
-            populateContentView(wip);
-            populateBigContentView(wip);
-            populateHeadsUpContentView(wip);
+            addExtras(wip.extras);
             return wip;
         }
 
@@ -3990,26 +3732,6 @@
          */
         public void purgeResources() {}
 
-        // The following methods are split out so we can re-create notification partially.
-        /**
-         * @hide
-         */
-        protected void populateTickerView(Notification wip) {}
-        /**
-         * @hide
-         */
-        protected void populateContentView(Notification wip) {}
-
-        /**
-         * @hide
-         */
-        protected void populateBigContentView(Notification wip) {}
-
-        /**
-         * @hide
-         */
-        protected void populateHeadsUpContentView(Notification wip) {}
-
         /**
          * Calls {@link android.app.Notification.Builder#build()} on the Builder this Style is
          * attached to.
@@ -4115,29 +3837,33 @@
             }
         }
 
-        private RemoteViews makeBigContentView() {
-            // Replace mLargeIcon with mBigLargeIcon if mBigLargeIconSet
+        /**
+         * @hide
+         */
+        public RemoteViews makeBigContentView() {
+            // Replace mN.mLargeIcon with mBigLargeIcon if mBigLargeIconSet
             // This covers the following cases:
             //   1. mBigLargeIconSet -> mBigLargeIcon (null or non-null) applies, overrides
-            //          mLargeIcon
-            //   2. !mBigLargeIconSet -> mLargeIcon applies
+            //          mN.mLargeIcon
+            //   2. !mBigLargeIconSet -> mN.mLargeIcon applies
             Icon oldLargeIcon = null;
             if (mBigLargeIconSet) {
-                oldLargeIcon = mBuilder.mLargeIcon;
-                mBuilder.mLargeIcon = mBigLargeIcon;
+                oldLargeIcon = mBuilder.mN.mLargeIcon;
+                mBuilder.mN.mLargeIcon = mBigLargeIcon;
             }
 
             RemoteViews contentView = getStandardView(mBuilder.getBigPictureLayoutResource());
 
             if (mBigLargeIconSet) {
-                mBuilder.mLargeIcon = oldLargeIcon;
+                mBuilder.mN.mLargeIcon = oldLargeIcon;
             }
 
             contentView.setImageViewBitmap(R.id.big_picture, mPicture);
 
             applyTopPadding(contentView);
 
-            boolean twoTextLines = mBuilder.mSubText != null && mBuilder.mContentText != null;
+            boolean twoTextLines = mBuilder.getAllExtras().getCharSequence(EXTRA_SUB_TEXT) != null
+                    && mBuilder.getAllExtras().getCharSequence(EXTRA_TEXT) != null;
             mBuilder.addProfileBadge(contentView,
                     twoTextLines ? R.id.profile_badge_line2 : R.id.profile_badge_line3);
             return contentView;
@@ -4168,14 +3894,6 @@
             }
             mPicture = extras.getParcelable(EXTRA_PICTURE);
         }
-
-        /**
-         * @hide
-         */
-        @Override
-        public void populateBigContentView(Notification wip) {
-            mBuilder.setBuilderBigContentView(wip, makeBigContentView());
-        }
     }
 
     /**
@@ -4255,15 +3973,19 @@
             mBigText = extras.getCharSequence(EXTRA_BIG_TEXT);
         }
 
-        private RemoteViews makeBigContentView() {
+        /**
+         * @hide
+         */
+        public RemoteViews makeBigContentView() {
 
             // Nasty
-            CharSequence oldBuilderContentText = mBuilder.mContentText;
-            mBuilder.mContentText = null;
+            CharSequence oldBuilderContentText =
+                    mBuilder.getAllExtras().getCharSequence(EXTRA_TEXT);
+            mBuilder.getAllExtras().putCharSequence(EXTRA_TEXT, null);
 
             RemoteViews contentView = getStandardView(mBuilder.getBigTextLayoutResource());
 
-            mBuilder.mContentText = oldBuilderContentText;
+            mBuilder.getAllExtras().putCharSequence(EXTRA_TEXT, oldBuilderContentText);
 
             contentView.setTextViewText(R.id.big_text, mBuilder.processLegacyText(mBigText));
             contentView.setViewVisibility(R.id.big_text, View.VISIBLE);
@@ -4282,7 +4004,8 @@
         private int calculateMaxLines() {
             int lineCount = MAX_LINES;
             boolean hasActions = mBuilder.mActions.size() > 0;
-            boolean hasSummary = (mSummaryTextSet ? mSummaryText : mBuilder.mSubText) != null;
+            boolean hasSummary = (mSummaryTextSet ? mSummaryText
+                    : mBuilder.getAllExtras().getCharSequence(EXTRA_SUB_TEXT)) != null;
             if (hasActions) {
                 lineCount -= LINES_CONSUMED_BY_ACTIONS;
             }
@@ -4291,19 +4014,11 @@
             }
 
             // If we have less top padding at the top, we can fit less lines.
-            if (!mBuilder.mHasThreeLines) {
+            if (!mBuilder.hasThreeLines()) {
                 lineCount--;
             }
             return lineCount;
         }
-
-        /**
-         * @hide
-         */
-        @Override
-        public void populateBigContentView(Notification wip) {
-            mBuilder.setBuilderBigContentView(wip, makeBigContentView());
-        }
     }
 
     /**
@@ -4384,16 +4099,18 @@
             }
         }
 
-        private RemoteViews makeBigContentView() {
+        /**
+         * @hide
+         */
+        public RemoteViews makeBigContentView() {
             // Remove the content text so line3 disappears unless you have a summary
-
             // Nasty
-            CharSequence oldBuilderContentText = mBuilder.mContentText;
-            mBuilder.mContentText = null;
+            CharSequence oldBuilderContentText = mBuilder.mN.extras.getCharSequence(EXTRA_TEXT);
+            mBuilder.getAllExtras().putCharSequence(EXTRA_TEXT, null);
 
             RemoteViews contentView = getStandardView(mBuilder.getInboxLayoutResource());
 
-            mBuilder.mContentText = oldBuilderContentText;
+            mBuilder.getAllExtras().putCharSequence(EXTRA_TEXT, oldBuilderContentText);
 
             contentView.setViewVisibility(R.id.text2, View.GONE);
 
@@ -4437,14 +4154,6 @@
 
             return contentView;
         }
-
-        /**
-         * @hide
-         */
-        @Override
-        public void populateBigContentView(Notification wip) {
-            mBuilder.setBuilderBigContentView(wip, makeBigContentView());
-        }
     }
 
     /**
@@ -4536,16 +4245,16 @@
          * @hide
          */
         @Override
-        public void populateContentView(Notification wip) {
-            mBuilder.setBuilderContentView(wip, makeMediaContentView());
+        public RemoteViews makeContentView() {
+            return makeMediaContentView();
         }
 
         /**
          * @hide
          */
         @Override
-        public void populateBigContentView(Notification wip) {
-            mBuilder.setBuilderBigContentView(wip, makeMediaBigContentView());
+        public RemoteViews makeBigContentView() {
+            return makeMediaBigContentView();
         }
 
         /** @hide */
@@ -4659,7 +4368,7 @@
                     R.color.notification_media_secondary_color);
             contentView.setTextColor(R.id.title, primaryColor);
             if (mBuilder.showsTimeOrChronometer()) {
-                if (mBuilder.mUseChronometer) {
+                if (mBuilder.getAllExtras().getBoolean(EXTRA_SHOW_CHRONOMETER)) {
                     contentView.setTextColor(R.id.chronometer, secondaryColor);
                 } else {
                     contentView.setTextColor(R.id.time, secondaryColor);
@@ -5503,7 +5212,7 @@
         /**
          * Gets the accent color.
          *
-         * @see setColor
+         * @see #setColor
          */
         @ColorInt
         public int getColor() {
diff --git a/core/java/android/app/NotificationManager.java b/core/java/android/app/NotificationManager.java
index cb0ff33..f75b22a 100644
--- a/core/java/android/app/NotificationManager.java
+++ b/core/java/android/app/NotificationManager.java
@@ -207,33 +207,7 @@
      */
     public void notify(String tag, int id, Notification notification)
     {
-        int[] idOut = new int[1];
-        INotificationManager service = getService();
-        String pkg = mContext.getPackageName();
-        if (notification.sound != null) {
-            notification.sound = notification.sound.getCanonicalUri();
-            if (StrictMode.vmFileUriExposureEnabled()) {
-                notification.sound.checkFileUriExposed("Notification.sound");
-            }
-        }
-        fixLegacySmallIcon(notification, pkg);
-        if (mContext.getApplicationInfo().targetSdkVersion > Build.VERSION_CODES.LOLLIPOP_MR1) {
-            if (notification.getSmallIcon() == null) {
-                throw new IllegalArgumentException("Invalid notification (no valid small icon): "
-                    + notification);
-            }
-        }
-        if (localLOGV) Log.v(TAG, pkg + ": notify(" + id + ", " + notification + ")");
-        Notification stripped = notification.clone();
-        Builder.stripForDelivery(stripped);
-        try {
-            service.enqueueNotificationWithTag(pkg, mContext.getOpPackageName(), tag, id,
-                    stripped, idOut, UserHandle.myUserId());
-            if (id != idOut[0]) {
-                Log.w(TAG, "notify: id corrupted: sent " + id + ", got back " + idOut[0]);
-            }
-        } catch (RemoteException e) {
-        }
+        notifyAsUser(tag, id, notification, new UserHandle(UserHandle.myUserId()));
     }
 
     /**
@@ -251,12 +225,17 @@
             }
         }
         fixLegacySmallIcon(notification, pkg);
+        if (mContext.getApplicationInfo().targetSdkVersion > Build.VERSION_CODES.LOLLIPOP_MR1) {
+            if (notification.getSmallIcon() == null) {
+                throw new IllegalArgumentException("Invalid notification (no valid small icon): "
+                        + notification);
+            }
+        }
         if (localLOGV) Log.v(TAG, pkg + ": notify(" + id + ", " + notification + ")");
-        Notification stripped = notification.clone();
-        Builder.stripForDelivery(stripped);
+        final Notification copy = notification.clone();
         try {
             service.enqueueNotificationWithTag(pkg, mContext.getOpPackageName(), tag, id,
-                    stripped, idOut, user.getIdentifier());
+                    copy, idOut, user.getIdentifier());
             if (id != idOut[0]) {
                 Log.w(TAG, "notify: id corrupted: sent " + id + ", got back " + idOut[0]);
             }
@@ -287,13 +266,7 @@
      */
     public void cancel(String tag, int id)
     {
-        INotificationManager service = getService();
-        String pkg = mContext.getPackageName();
-        if (localLOGV) Log.v(TAG, pkg + ": cancel(" + id + ")");
-        try {
-            service.cancelNotificationWithTag(pkg, tag, id, UserHandle.myUserId());
-        } catch (RemoteException e) {
-        }
+        cancelAsUser(tag, id, new UserHandle(UserHandle.myUserId()));
     }
 
     /**
diff --git a/core/java/android/service/notification/NotificationListenerService.java b/core/java/android/service/notification/NotificationListenerService.java
index d424546..7e7b5fc 100644
--- a/core/java/android/service/notification/NotificationListenerService.java
+++ b/core/java/android/service/notification/NotificationListenerService.java
@@ -31,6 +31,7 @@
 import android.graphics.drawable.Drawable;
 import android.graphics.drawable.Icon;
 import android.graphics.Bitmap;
+import android.os.Build;
 import android.os.Bundle;
 import android.os.IBinder;
 import android.os.Parcel;
@@ -472,9 +473,10 @@
                 StatusBarNotification sbn = list.get(i);
                 Notification notification = sbn.getNotification();
                 try {
-                    Builder.rebuild(getContext(), notification);
                     // convert icon metadata to legacy format for older clients
                     createLegacyIconExtras(notification);
+                    // populate remote views for older clients.
+                    maybePopulateRemoteViews(notification);
                 } catch (IllegalArgumentException e) {
                     if (corruptNotifications == null) {
                         corruptNotifications = new ArrayList<>(N);
@@ -676,6 +678,18 @@
         }
     }
 
+    /**
+     * Populates remote views for pre-N targeting apps.
+     */
+    private void maybePopulateRemoteViews(Notification notification) {
+        if (getContext().getApplicationInfo().targetSdkVersion < Build.VERSION_CODES.N) {
+            Builder builder = Builder.recoverBuilder(getContext(), notification);
+            notification.contentView = builder.makeContentView();
+            notification.bigContentView = builder.makeBigContentView();
+            notification.headsUpContentView = builder.makeHeadsUpContentView();
+        }
+    }
+
     private class INotificationListenerWrapper extends INotificationListener.Stub {
         @Override
         public void onNotificationPosted(IStatusBarNotificationHolder sbnHolder,
@@ -689,9 +703,10 @@
             }
 
             try {
-                Notification.Builder.rebuild(getContext(), sbn.getNotification());
+                Notification notification = sbn.getNotification();
                 // convert icon metadata to legacy format for older clients
                 createLegacyIconExtras(sbn.getNotification());
+                maybePopulateRemoteViews(sbn.getNotification());
             } catch (IllegalArgumentException e) {
                 // drop corrupt notification
                 sbn = null;
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java b/packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
index 8938669..10c37ce 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
@@ -1275,20 +1275,22 @@
 
         int maxHeight = mRowMaxHeight;
         final StatusBarNotification sbn = entry.notification;
-        RemoteViews contentView = sbn.getNotification().contentView;
-        RemoteViews bigContentView = sbn.getNotification().bigContentView;
-        RemoteViews headsUpContentView = sbn.getNotification().headsUpContentView;
+        entry.cacheContentViews(mContext, null);
+
+        final RemoteViews contentView = entry.cachedContentView;
+        final RemoteViews bigContentView = entry.cachedBigContentView;
+        final RemoteViews headsUpContentView = entry.cachedHeadsUpContentView;
+        final RemoteViews publicContentView = entry.cachedPublicContentView;
 
         if (contentView == null) {
+            Log.v(TAG, "no contentView for: " + sbn.getNotification());
             return false;
         }
 
         if (DEBUG) {
-            Log.v(TAG, "publicNotification: " + sbn.getNotification().publicVersion);
+            Log.v(TAG, "publicContentView: " + publicContentView);
         }
 
-        Notification publicNotification = sbn.getNotification().publicVersion;
-
         ExpandableNotificationRow row;
 
         // Stash away previous user expansion state so we can restore it at
@@ -1377,9 +1379,9 @@
 
         // now the public version
         View publicViewLocal = null;
-        if (publicNotification != null) {
+        if (publicContentView != null) {
             try {
-                publicViewLocal = publicNotification.contentView.apply(
+                publicViewLocal = publicContentView.apply(
                         sbn.getPackageContext(mContext),
                         contentContainerPublic, mOnClickHandler);
 
@@ -1537,30 +1539,9 @@
             }
 
             if (viableAction != null) {
-                Notification stripped = n.clone();
-                Notification.Builder.stripForDelivery(stripped);
-                stripped.extras.putBoolean("android.rebuild", true);
-                stripped.actions = new Notification.Action[] { viableAction };
-                stripped.extras.putBoolean("android.rebuild.contentView", true);
-                stripped.contentView = null;
-                stripped.extras.putBoolean("android.rebuild.bigView", true);
-                stripped.bigContentView = null;
-                stripped.extras.putBoolean("android.rebuild.hudView", true);
-                stripped.headsUpContentView = null;
-
-                stripped.extras.putParcelable(Notification.EXTRA_LARGE_ICON,
-                        stripped.getLargeIcon());
-                if (SystemProperties.getBoolean("debug.strip_third_line", false)) {
-                    stripped.extras.putCharSequence(Notification.EXTRA_INFO_TEXT, null);
-                    stripped.extras.putCharSequence(Notification.EXTRA_SUMMARY_TEXT, null);
-                }
-
-                Notification rebuilt = Notification.Builder.rebuild(mContext, stripped);
-
-                n.actions = rebuilt.actions;
-                n.bigContentView = rebuilt.bigContentView;
-                n.headsUpContentView = rebuilt.headsUpContentView;
-                n.publicVersion = rebuilt.publicVersion;
+                Notification.Builder rebuilder = Notification.Builder.recoverBuilder(mContext, n);
+                rebuilder.setActions(viableAction);
+                rebuilder.build(); // will rewrite n
             }
         }
     }
@@ -2034,12 +2015,15 @@
         }
 
         Notification n = notification.getNotification();
-        if (DEBUG) {
-            logUpdate(entry, n);
-        }
-        boolean applyInPlace = shouldApplyInPlace(entry, n);
+
+        boolean applyInPlace = !entry.cacheContentViews(mContext, notification.getNotification());
         boolean shouldInterrupt = shouldInterrupt(entry, notification);
         boolean alertAgain = alertAgain(entry, n);
+        if (DEBUG) {
+            Log.d(TAG, "applyInPlace=" + applyInPlace
+                    + " shouldInterrupt=" + shouldInterrupt
+                    + " alertAgain=" + alertAgain);
+        }
 
         entry.notification = notification;
         mGroupManager.onEntryUpdated(entry, entry.notification);
@@ -2104,101 +2088,32 @@
     protected abstract void updateHeadsUp(String key, Entry entry, boolean shouldInterrupt,
             boolean alertAgain);
 
-    private void logUpdate(Entry oldEntry, Notification n) {
-        StatusBarNotification oldNotification = oldEntry.notification;
-        Log.d(TAG, "old notification: when=" + oldNotification.getNotification().when
-                + " ongoing=" + oldNotification.isOngoing()
-                + " expanded=" + oldEntry.getContentView()
-                + " contentView=" + oldNotification.getNotification().contentView
-                + " bigContentView=" + oldNotification.getNotification().bigContentView
-                + " publicView=" + oldNotification.getNotification().publicVersion
-                + " rowParent=" + oldEntry.row.getParent());
-        Log.d(TAG, "new notification: when=" + n.when
-                + " ongoing=" + oldNotification.isOngoing()
-                + " contentView=" + n.contentView
-                + " bigContentView=" + n.bigContentView
-                + " publicView=" + n.publicVersion);
-    }
-
-    /**
-     * @return whether we can just reapply the RemoteViews from a notification in-place when it is
-     * updated
-     */
-    private boolean shouldApplyInPlace(Entry entry, Notification n) {
-        StatusBarNotification oldNotification = entry.notification;
-        // XXX: modify when we do something more intelligent with the two content views
-        final RemoteViews oldContentView = oldNotification.getNotification().contentView;
-        final RemoteViews contentView = n.contentView;
-        final RemoteViews oldBigContentView = oldNotification.getNotification().bigContentView;
-        final RemoteViews bigContentView = n.bigContentView;
-        final RemoteViews oldHeadsUpContentView
-                = oldNotification.getNotification().headsUpContentView;
-        final RemoteViews headsUpContentView = n.headsUpContentView;
-        final Notification oldPublicNotification = oldNotification.getNotification().publicVersion;
-        final RemoteViews oldPublicContentView = oldPublicNotification != null
-                ? oldPublicNotification.contentView : null;
-        final Notification publicNotification = n.publicVersion;
-        final RemoteViews publicContentView = publicNotification != null
-                ? publicNotification.contentView : null;
-        boolean contentsUnchanged = entry.getContentView() != null
-                && contentView.getPackage() != null
-                && oldContentView.getPackage() != null
-                && oldContentView.getPackage().equals(contentView.getPackage())
-                && oldContentView.getLayoutId() == contentView.getLayoutId();
-        // large view may be null
-        boolean bigContentsUnchanged =
-                (entry.getExpandedContentView() == null && bigContentView == null)
-                || ((entry.getExpandedContentView() != null && bigContentView != null)
-                    && bigContentView.getPackage() != null
-                    && oldBigContentView.getPackage() != null
-                    && oldBigContentView.getPackage().equals(bigContentView.getPackage())
-                    && oldBigContentView.getLayoutId() == bigContentView.getLayoutId());
-        boolean headsUpContentsUnchanged =
-                (oldHeadsUpContentView == null && headsUpContentView == null)
-                || ((oldHeadsUpContentView != null && headsUpContentView != null)
-                    && headsUpContentView.getPackage() != null
-                    && oldHeadsUpContentView.getPackage() != null
-                    && oldHeadsUpContentView.getPackage().equals(headsUpContentView.getPackage())
-                    && oldHeadsUpContentView.getLayoutId() == headsUpContentView.getLayoutId());
-        boolean publicUnchanged  =
-                (oldPublicContentView == null && publicContentView == null)
-                || ((oldPublicContentView != null && publicContentView != null)
-                        && publicContentView.getPackage() != null
-                        && oldPublicContentView.getPackage() != null
-                        && oldPublicContentView.getPackage().equals(publicContentView.getPackage())
-                        && oldPublicContentView.getLayoutId() == publicContentView.getLayoutId());
-        return contentsUnchanged && bigContentsUnchanged && headsUpContentsUnchanged
-                && publicUnchanged;
-    }
-
-    private void updateNotificationViews(Entry entry, StatusBarNotification notification) {
-        final RemoteViews contentView = notification.getNotification().contentView;
-        final RemoteViews bigContentView = notification.getNotification().bigContentView;
-        final RemoteViews headsUpContentView = notification.getNotification().headsUpContentView;
-        final Notification publicVersion = notification.getNotification().publicVersion;
-        final RemoteViews publicContentView = publicVersion != null ? publicVersion.contentView
-                : null;
+    private void updateNotificationViews(Entry entry, StatusBarNotification sbn) {
+        final RemoteViews contentView = entry.cachedContentView;
+        final RemoteViews bigContentView = entry.cachedBigContentView;
+        final RemoteViews headsUpContentView = entry.cachedHeadsUpContentView;
+        final RemoteViews publicContentView = entry.cachedPublicContentView;
 
         // Reapply the RemoteViews
         contentView.reapply(mContext, entry.getContentView(), mOnClickHandler);
         if (bigContentView != null && entry.getExpandedContentView() != null) {
-            bigContentView.reapply(notification.getPackageContext(mContext),
+            bigContentView.reapply(sbn.getPackageContext(mContext),
                     entry.getExpandedContentView(),
                     mOnClickHandler);
         }
         View headsUpChild = entry.getHeadsUpContentView();
         if (headsUpContentView != null && headsUpChild != null) {
-            headsUpContentView.reapply(notification.getPackageContext(mContext),
+            headsUpContentView.reapply(sbn.getPackageContext(mContext),
                     headsUpChild, mOnClickHandler);
         }
         if (publicContentView != null && entry.getPublicContentView() != null) {
-            publicContentView.reapply(notification.getPackageContext(mContext),
+            publicContentView.reapply(sbn.getPackageContext(mContext),
                     entry.getPublicContentView(), mOnClickHandler);
         }
         // update the contentIntent
-        mNotificationClicker.register(entry.row, notification);
+        mNotificationClicker.register(entry.row, sbn);
 
-        entry.row.setStatusBarNotification(notification);
+        entry.row.setStatusBarNotification(sbn);
         entry.row.notifyContentUpdated();
         entry.row.resetHeight();
 
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/NotificationData.java b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationData.java
index aedae52..6a90d8e 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/NotificationData.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationData.java
@@ -17,6 +17,7 @@
 package com.android.systemui.statusbar;
 
 import android.app.Notification;
+import android.content.Context;
 import android.os.SystemClock;
 import android.service.notification.NotificationListenerService;
 import android.service.notification.NotificationListenerService.Ranking;
@@ -24,6 +25,7 @@
 import android.service.notification.StatusBarNotification;
 import android.util.ArrayMap;
 import android.view.View;
+import android.widget.RemoteViews;
 
 import com.android.systemui.statusbar.phone.NotificationGroupManager;
 import com.android.systemui.statusbar.policy.HeadsUpManager;
@@ -53,6 +55,10 @@
         public boolean legacy; // whether the notification has a legacy, dark background
         public int targetSdk;
         private long lastFullScreenIntentLaunchTime = NOT_LAUNCHED_YET;
+        public RemoteViews cachedContentView;
+        public RemoteViews cachedBigContentView;
+        public RemoteViews cachedHeadsUpContentView;
+        public RemoteViews cachedPublicContentView;
 
         public Entry(StatusBarNotification n, StatusBarIconView ic) {
             this.key = n.getKey();
@@ -98,6 +104,67 @@
             return row.getPublicLayout().getContractedChild();
         }
 
+        public boolean cacheContentViews(Context ctx, Notification updatedNotification) {
+            boolean cached = false;
+            if (updatedNotification != null) {
+                final Notification.Builder updatedNotificationBuilder
+                        = Notification.Builder.recoverBuilder(ctx, updatedNotification);
+                final RemoteViews newContentView = updatedNotificationBuilder.makeContentView();
+                if (!compareRemoteViews(cachedContentView, newContentView)) {
+                    cachedContentView = newContentView;
+                    cached |= true;
+                }
+                final RemoteViews newBigContentView =
+                        updatedNotificationBuilder.makeBigContentView();
+                if (!compareRemoteViews(cachedBigContentView, newBigContentView)) {
+                    cachedBigContentView = newBigContentView;
+                    cached |= true;
+                }
+                final RemoteViews newHeadsUpContentView =
+                        updatedNotificationBuilder.makeHeadsUpContentView();
+                if (!compareRemoteViews(cachedHeadsUpContentView, newBigContentView)) {
+                    cachedHeadsUpContentView = newHeadsUpContentView;
+                    cached |= true;
+                }
+                final Notification updatedPublicNotification = updatedNotification.publicVersion;
+                final RemoteViews newPubContentView = (updatedPublicNotification != null)
+                        ? Notification.Builder.recoverBuilder(
+                                ctx, updatedPublicNotification).makeContentView()
+                        : null;
+                if (!compareRemoteViews(cachedPublicContentView, newPubContentView)) {
+                    cachedPublicContentView = newPubContentView;
+                    cached |= true;
+                }
+            } else {
+                final Notification.Builder builder
+                        = Notification.Builder.recoverBuilder(ctx, notification.getNotification());
+
+                cachedContentView = builder.makeContentView();
+                cachedBigContentView = builder.makeBigContentView();
+                cachedHeadsUpContentView = builder.makeHeadsUpContentView();
+
+                final Notification publicNotification =
+                        notification.getNotification().publicVersion;
+                if (publicNotification != null) {
+                    final Notification.Builder publicBuilder
+                            = Notification.Builder.recoverBuilder(ctx, publicNotification);
+                    cachedPublicContentView = publicBuilder.makeContentView();
+                }
+                cached = true;
+            }
+            return cached;
+        }
+
+        // Returns true if the RemoteViews are the same.
+        private boolean compareRemoteViews(final RemoteViews a, final RemoteViews b) {
+            return (a == null && b == null) ||
+                    (a != null && b != null
+                    && b.getPackage() != null
+                    && a.getPackage() != null
+                    && a.getPackage().equals(b.getPackage())
+                    && a.getLayoutId() == b.getLayoutId());
+        }
+
         public void notifyFullScreenIntentLaunched() {
             lastFullScreenIntentLaunchTime = SystemClock.elapsedRealtime();
         }
diff --git a/services/core/java/com/android/server/notification/NotificationManagerService.java b/services/core/java/com/android/server/notification/NotificationManagerService.java
index e8e46ef..361bbf9 100644
--- a/services/core/java/com/android/server/notification/NotificationManagerService.java
+++ b/services/core/java/com/android/server/notification/NotificationManagerService.java
@@ -2146,13 +2146,6 @@
                     + " id=" + id + " notification=" + notification);
         }
 
-        if (notification.getSmallIcon() != null) {
-            if (!notification.isValid()) {
-                throw new IllegalArgumentException("Invalid notification (): pkg=" + pkg
-                        + " id=" + id + " notification=" + notification);
-            }
-        }
-
         mHandler.post(new Runnable() {
             @Override
             public void run() {