Merge "Modify task navigation to return to recent tasks. DO NOT MERGE" into lmp-preview-dev
diff --git a/core/java/android/view/WindowManagerPolicy.java b/core/java/android/view/WindowManagerPolicy.java
index 4fde1e4..1bb20c9 100644
--- a/core/java/android/view/WindowManagerPolicy.java
+++ b/core/java/android/view/WindowManagerPolicy.java
@@ -1144,6 +1144,12 @@
     public void setLastInputMethodWindowLw(WindowState ime, WindowState target);
 
     /**
+     * Show the recents task list app.
+     * @hide
+     */
+    public void showRecentApps();
+
+    /**
      * @return The current height of the input method window.
      */
     public int getInputMethodWindowVisibleHeightLw();
diff --git a/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java b/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
index 99771934..e178773 100644
--- a/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
+++ b/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
@@ -478,6 +478,7 @@
     private static final int MSG_DISABLE_POINTER_LOCATION = 2;
     private static final int MSG_DISPATCH_MEDIA_KEY_WITH_WAKE_LOCK = 3;
     private static final int MSG_DISPATCH_MEDIA_KEY_REPEAT_WITH_WAKE_LOCK = 4;
+    private static final int MSG_DISPATCH_SHOW_RECENTS = 5;
 
     private class PolicyHandler extends Handler {
         @Override
@@ -495,6 +496,9 @@
                 case MSG_DISPATCH_MEDIA_KEY_REPEAT_WITH_WAKE_LOCK:
                     dispatchMediaKeyRepeatWithWakeLock((KeyEvent)msg.obj);
                     break;
+                case MSG_DISPATCH_SHOW_RECENTS:
+                    showRecentApps(false);
+                    break;
             }
         }
     }
@@ -2459,6 +2463,12 @@
         }
     }
 
+    @Override
+    public void showRecentApps() {
+        mHandler.removeMessages(MSG_DISPATCH_SHOW_RECENTS);
+        mHandler.sendEmptyMessage(MSG_DISPATCH_SHOW_RECENTS);
+    }
+
     private void showRecentApps(boolean triggeredFromAltTab) {
         mPreloadedRecentApps = false; // preloading no longer needs to be canceled
         try {
diff --git a/services/core/java/com/android/server/am/ActivityStack.java b/services/core/java/com/android/server/am/ActivityStack.java
index 534fd90..d0ba118 100755
--- a/services/core/java/com/android/server/am/ActivityStack.java
+++ b/services/core/java/com/android/server/am/ActivityStack.java
@@ -30,6 +30,10 @@
 import static com.android.server.am.ActivityManagerService.DEBUG_VISBILITY;
 import static com.android.server.am.ActivityManagerService.VALIDATE_TOKENS;
 
+import static com.android.server.am.ActivityRecord.HOME_ACTIVITY_TYPE;
+import static com.android.server.am.ActivityRecord.APPLICATION_ACTIVITY_TYPE;
+import static com.android.server.am.ActivityRecord.RECENTS_ACTIVITY_TYPE;
+
 import static com.android.server.am.ActivityStackSupervisor.DEBUG_ADD_REMOVE;
 import static com.android.server.am.ActivityStackSupervisor.DEBUG_APP;
 import static com.android.server.am.ActivityStackSupervisor.DEBUG_SAVED_STATE;
@@ -1040,40 +1044,6 @@
         }
     }
 
-    /**
-     * Determine if home should be visible below the passed record.
-     * @param record activity we are querying for.
-     * @return true if home is visible below the passed activity, false otherwise.
-     */
-    boolean isActivityOverHome(ActivityRecord record) {
-        // Start at record and go down, look for either home or a visible fullscreen activity.
-        final TaskRecord recordTask = record.task;
-        for (int taskNdx = mTaskHistory.indexOf(recordTask); taskNdx >= 0; --taskNdx) {
-            TaskRecord task = mTaskHistory.get(taskNdx);
-            final ArrayList<ActivityRecord> activities = task.mActivities;
-            final int startNdx =
-                    task == recordTask ? activities.indexOf(record) : activities.size() - 1;
-            for (int activityNdx = startNdx; activityNdx >= 0; --activityNdx) {
-                final ActivityRecord r = activities.get(activityNdx);
-                if (r.isHomeActivity()) {
-                    return true;
-                }
-                if (!r.finishing && r.fullscreen) {
-                    // Passed activity is over a fullscreen activity.
-                    return false;
-                }
-            }
-            if (task.mOnTopOfHome) {
-                // Got to the bottom of a task on top of home without finding a visible fullscreen
-                // activity. Home is visible.
-                return true;
-            }
-        }
-        // Got to the bottom of this stack and still don't know. If this is over the home stack
-        // then record is over home. May not work if we ever get more than two layers.
-        return mStackSupervisor.isFrontStack(this);
-    }
-
     private void setVisibile(ActivityRecord r, boolean visible) {
         r.visible = visible;
         mWindowManager.setAppVisibility(r.appToken, visible);
@@ -1103,7 +1073,8 @@
         for (int i = mStacks.indexOf(this) + 1; i < mStacks.size(); i++) {
             final ArrayList<TaskRecord> tasks = mStacks.get(i).getAllTasks();
             for (int taskNdx = 0; taskNdx < tasks.size(); taskNdx++) {
-                final ArrayList<ActivityRecord> activities = tasks.get(taskNdx).mActivities;
+                final TaskRecord task = tasks.get(taskNdx);
+                final ArrayList<ActivityRecord> activities = task.mActivities;
                 for (int activityNdx = 0; activityNdx < activities.size(); activityNdx++) {
                     final ActivityRecord r = activities.get(activityNdx);
 
@@ -1114,7 +1085,7 @@
                     // - Full Screen Activity OR
                     // - On top of Home and our stack is NOT home
                     if (!r.finishing && r.visible && (r.fullscreen ||
-                            (!isHomeStack() && r.frontOfTask && tasks.get(taskNdx).mOnTopOfHome))) {
+                            (!isHomeStack() && r.frontOfTask && task.isOverHomeStack()))) {
                         return false;
                     }
                 }
@@ -1242,7 +1213,7 @@
                         // At this point, nothing else needs to be shown
                         if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r);
                         behindFullscreen = true;
-                    } else if (!isHomeStack() && r.frontOfTask && task.mOnTopOfHome) {
+                    } else if (!isHomeStack() && r.frontOfTask && task.isOverHomeStack()) {
                         if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r);
                         behindFullscreen = true;
                     }
@@ -1396,6 +1367,7 @@
         final boolean userLeaving = mStackSupervisor.mUserLeaving;
         mStackSupervisor.mUserLeaving = false;
 
+        final TaskRecord prevTask = prev != null ? prev.task : null;
         if (next == null) {
             // There are no more activities!  Let's just start up the
             // Launcher...
@@ -1403,7 +1375,10 @@
             if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home");
             if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked();
             // Only resume home if on home display
-            return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev);
+            final int returnTaskType = prevTask == null || !prevTask.isOverHomeStack() ?
+                    HOME_ACTIVITY_TYPE : prevTask.getTaskToReturnTo();
+            return isOnHomeDisplay() &&
+                    mStackSupervisor.resumeHomeStackTask(returnTaskType, prev);
         }
 
         next.delayedResume = false;
@@ -1422,22 +1397,24 @@
         }
 
         final TaskRecord nextTask = next.task;
-        final TaskRecord prevTask = prev != null ? prev.task : null;
         if (prevTask != null && prevTask.stack == this &&
-                prevTask.mOnTopOfHome && prev.finishing && prev.frontOfTask) {
+                prevTask.isOverHomeStack() && prev.finishing && prev.frontOfTask) {
             if (DEBUG_STACK)  mStackSupervisor.validateTopActivitiesLocked();
             if (prevTask == nextTask) {
                 prevTask.setFrontOfTask();
             } else if (prevTask != topTask()) {
-                // This task is going away but it was supposed to return to the home task.
+                // This task is going away but it was supposed to return to the home stack.
                 // Now the task above it has to return to the home task instead.
                 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1;
-                mTaskHistory.get(taskNdx).mOnTopOfHome = true;
+                mTaskHistory.get(taskNdx).setTaskToReturnTo(HOME_ACTIVITY_TYPE);
             } else {
                 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG,
                         "resumeTopActivityLocked: Launching home next");
                 // Only resume home if on home display
-                return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev);
+                final int returnTaskType = prevTask == null || !prevTask.isOverHomeStack() ?
+                        HOME_ACTIVITY_TYPE : prevTask.getTaskToReturnTo();
+                return isOnHomeDisplay() &&
+                        mStackSupervisor.resumeHomeStackTask(returnTaskType, prev);
             }
         }
 
@@ -1808,10 +1785,11 @@
             ActivityStack lastStack = mStackSupervisor.getLastStack();
             final boolean fromHome = lastStack.isHomeStack();
             if (!isHomeStack() && (fromHome || topTask() != task)) {
-                task.mOnTopOfHome = fromHome;
+                task.setTaskToReturnTo(fromHome ?
+                        lastStack.topTask().taskType : APPLICATION_ACTIVITY_TYPE);
             }
         } else {
-            task.mOnTopOfHome = false;
+            task.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE);
         }
 
         mTaskHistory.remove(task);
@@ -2356,8 +2334,8 @@
             ActivityRecord next = topRunningActivityLocked(null);
             if (next != r) {
                 final TaskRecord task = r.task;
-                if (r.frontOfTask && task == topTask() && task.mOnTopOfHome) {
-                    mStackSupervisor.moveHomeToTop();
+                if (r.frontOfTask && task == topTask() && task.isOverHomeStack()) {
+                    mStackSupervisor.moveHomeStackTaskToTop(task.getTaskToReturnTo());
                 }
             }
             ActivityRecord top = mStackSupervisor.topRunningActivityLocked();
@@ -2841,8 +2819,9 @@
         if (task != null && task.removeActivity(r)) {
             if (DEBUG_STACK) Slog.i(TAG,
                     "removeActivityFromHistoryLocked: last activity removed from " + this);
-            if (mStackSupervisor.isFrontStack(this) && task == topTask() && task.mOnTopOfHome) {
-                mStackSupervisor.moveHomeToTop();
+            if (mStackSupervisor.isFrontStack(this) && task == topTask() &&
+                    task.isOverHomeStack()) {
+                mStackSupervisor.moveHomeStackTaskToTop(task.getTaskToReturnTo());
             }
             removeTask(task);
         }
@@ -3157,12 +3136,13 @@
         }
     }
 
-    void moveHomeTaskToTop() {
+    void moveHomeStackTaskToTop(int homeStackTaskType) {
         final int top = mTaskHistory.size() - 1;
         for (int taskNdx = top; taskNdx >= 0; --taskNdx) {
             final TaskRecord task = mTaskHistory.get(taskNdx);
-            if (task.isHomeTask()) {
-                if (DEBUG_TASKS || DEBUG_STACK) Slog.d(TAG, "moveHomeTaskToTop: moving " + task);
+            if (task.taskType == homeStackTaskType) {
+                if (DEBUG_TASKS || DEBUG_STACK)
+                    Slog.d(TAG, "moveHomeStackTaskToTop: moving " + task);
                 mTaskHistory.remove(taskNdx);
                 mTaskHistory.add(top, task);
                 updateTaskMovement(task, true);
@@ -3274,12 +3254,12 @@
         int numTasks = mTaskHistory.size();
         for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) {
             final TaskRecord task = mTaskHistory.get(taskNdx);
-            if (task.mOnTopOfHome) {
+            if (task.isOverHomeStack()) {
                 break;
             }
             if (taskNdx == 1) {
                 // Set the last task before tr to go to home.
-                task.mOnTopOfHome = true;
+                task.setTaskToReturnTo(HOME_ACTIVITY_TYPE);
             }
         }
 
@@ -3300,9 +3280,10 @@
         }
 
         final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null;
-        if (task == tr && tr.mOnTopOfHome || numTasks <= 1 && isOnHomeDisplay()) {
-            tr.mOnTopOfHome = false;
-            return mStackSupervisor.resumeHomeActivity(null);
+        if (task == tr && tr.isOverHomeStack() || numTasks <= 1 && isOnHomeDisplay()) {
+            final int taskToReturnTo = tr.getTaskToReturnTo();
+            tr.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE);
+            return mStackSupervisor.resumeHomeStackTask(taskToReturnTo, null);
         }
 
         mStackSupervisor.resumeTopActivitiesLocked();
@@ -3743,8 +3724,11 @@
 
         final int taskNdx = mTaskHistory.indexOf(task);
         final int topTaskNdx = mTaskHistory.size() - 1;
-        if (task.mOnTopOfHome && taskNdx < topTaskNdx) {
-            mTaskHistory.get(taskNdx + 1).mOnTopOfHome = true;
+        if (task.isOverHomeStack() && taskNdx < topTaskNdx) {
+            final TaskRecord nextTask = mTaskHistory.get(taskNdx + 1);
+            if (!nextTask.isOverHomeStack()) {
+                nextTask.setTaskToReturnTo(HOME_ACTIVITY_TYPE);
+            }
         }
         mTaskHistory.remove(task);
         updateTaskMovement(task, true);
diff --git a/services/core/java/com/android/server/am/ActivityStackSupervisor.java b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
index e9565d6..c1a4643 100644
--- a/services/core/java/com/android/server/am/ActivityStackSupervisor.java
+++ b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
@@ -31,6 +31,9 @@
 import static com.android.server.am.ActivityManagerService.DEBUG_USER_LEAVING;
 import static com.android.server.am.ActivityManagerService.FIRST_SUPERVISOR_STACK_MSG;
 import static com.android.server.am.ActivityManagerService.TAG;
+import static com.android.server.am.ActivityRecord.HOME_ACTIVITY_TYPE;
+import static com.android.server.am.ActivityRecord.RECENTS_ACTIVITY_TYPE;
+import static com.android.server.am.ActivityRecord.APPLICATION_ACTIVITY_TYPE;
 
 import android.app.Activity;
 import android.app.ActivityManager;
@@ -318,18 +321,27 @@
         }
     }
 
-    void moveHomeToTop() {
+    void moveHomeStackTaskToTop(int homeStackTaskType) {
+        if (homeStackTaskType == RECENTS_ACTIVITY_TYPE) {
+            mWindowManager.showRecentApps();
+            return;
+        }
         moveHomeStack(true);
-        mHomeStack.moveHomeTaskToTop();
+        mHomeStack.moveHomeStackTaskToTop(homeStackTaskType);
     }
 
-    boolean resumeHomeActivity(ActivityRecord prev) {
-        moveHomeToTop();
-        if (prev != null) {
-            prev.task.mOnTopOfHome = false;
+    boolean resumeHomeStackTask(int homeStackTaskType, ActivityRecord prev) {
+        if (homeStackTaskType == RECENTS_ACTIVITY_TYPE) {
+            mWindowManager.showRecentApps();
+            return false;
         }
+        moveHomeStackTaskToTop(homeStackTaskType);
+        if (prev != null) {
+            prev.task.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE);
+        }
+
         ActivityRecord r = mHomeStack.topRunningActivityLocked(null);
-        if (r != null && r.isHomeActivity()) {
+        if (r != null && (r.isHomeActivity() || r.isRecentsActivity())) {
             mService.setFocusedActivityLocked(r);
             return resumeTopActivitiesLocked(mHomeStack, prev, null);
         }
@@ -683,7 +695,7 @@
     }
 
     void startHomeActivity(Intent intent, ActivityInfo aInfo) {
-        moveHomeToTop();
+        moveHomeStackTaskToTop(HOME_ACTIVITY_TYPE);
         startActivityLocked(null, intent, null, aInfo, null, null, null, null, 0, 0, 0, null, 0,
                 null, false, null, null);
     }
@@ -1615,7 +1627,7 @@
                                     (FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_TASK_ON_HOME))
                                     == (FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_TASK_ON_HOME)) {
                                 // Caller wants to appear on home activity.
-                                intentActivity.task.mOnTopOfHome = true;
+                                intentActivity.task.setTaskToReturnTo(HOME_ACTIVITY_TYPE);
                             }
                             options = null;
                         }
@@ -1799,6 +1811,11 @@
                         newTaskInfo != null ? newTaskInfo : r.info,
                         newTaskIntent != null ? newTaskIntent : intent,
                         voiceSession, voiceInteractor, true), null, true);
+                if (sourceRecord == null) {
+                    // Launched from a service or notification or task that is finishing.
+                    r.task.setTaskToReturnTo(isFrontStack(mHomeStack) ?
+                            mHomeStack.topTask().taskType : RECENTS_ACTIVITY_TYPE);
+                }
                 if (DEBUG_TASKS) Slog.v(TAG, "Starting new activity " + r + " in new task " +
                         r.task);
             } else {
@@ -1811,7 +1828,7 @@
                         == (Intent.FLAG_ACTIVITY_NEW_TASK|Intent.FLAG_ACTIVITY_TASK_ON_HOME)) {
                     // Caller wants to appear on home activity, so before starting
                     // their own activity we will bring home to the front.
-                    r.task.mOnTopOfHome = r.task.stack.isOnHomeDisplay();
+                    r.task.setTaskToReturnTo(HOME_ACTIVITY_TYPE);
                 }
             }
         } else if (sourceRecord != null) {
@@ -2162,7 +2179,7 @@
         if ((flags & ActivityManager.MOVE_TASK_WITH_HOME) != 0) {
             // Caller wants the home activity moved with it.  To accomplish this,
             // we'll just indicate that this task returns to the home task.
-            task.mOnTopOfHome = true;
+            task.setTaskToReturnTo(HOME_ACTIVITY_TYPE);
         }
         task.stack.moveTaskToFrontLocked(task, null, options);
         if (DEBUG_STACK) Slog.d(TAG, "findTaskToMoveToFront: moved to front of stack="
@@ -2273,7 +2290,7 @@
             }
             mWindowManager.addTask(taskId, stackId, false);
         }
-        resumeHomeActivity(null);
+        resumeHomeStackTask(HOME_ACTIVITY_TYPE, null);
     }
 
     void moveTaskToStack(int taskId, int stackId, boolean toTop) {
@@ -2530,7 +2547,7 @@
             }
         } else {
             // Stack was moved to another display while user was swapped out.
-            resumeHomeActivity(null);
+            resumeHomeStackTask(HOME_ACTIVITY_TYPE, null);
         }
         return homeInFront;
     }
diff --git a/services/core/java/com/android/server/am/TaskRecord.java b/services/core/java/com/android/server/am/TaskRecord.java
index ce83ae6..c07bc1e 100644
--- a/services/core/java/com/android/server/am/TaskRecord.java
+++ b/services/core/java/com/android/server/am/TaskRecord.java
@@ -17,6 +17,9 @@
 package com.android.server.am;
 
 import static com.android.server.am.ActivityManagerService.TAG;
+import static com.android.server.am.ActivityRecord.HOME_ACTIVITY_TYPE;
+import static com.android.server.am.ActivityRecord.APPLICATION_ACTIVITY_TYPE;
+import static com.android.server.am.ActivityRecord.RECENTS_ACTIVITY_TYPE;
 import static com.android.server.am.ActivityStackSupervisor.DEBUG_ADD_REMOVE;
 
 import android.app.Activity;
@@ -54,7 +57,6 @@
     private static final String ATTR_ASKEDCOMPATMODE = "asked_compat_mode";
     private static final String ATTR_USERID = "user_id";
     private static final String ATTR_TASKTYPE = "task_type";
-    private static final String ATTR_ONTOPOFHOME = "on_top_of_home";
     private static final String ATTR_LASTDESCRIPTION = "last_description";
     private static final String ATTR_LASTTIMEMOVED = "last_time_moved";
 
@@ -104,9 +106,11 @@
 
     /** True if persistable, has changed, and has not yet been persisted */
     boolean needsPersisting = false;
-    /** Launch the home activity when leaving this task. Will be false for tasks that are not on
-     * Display.DEFAULT_DISPLAY. */
-    boolean mOnTopOfHome = false;
+
+    /** Indication of what to run next when task exits. Use ActivityRecord types.
+     * ActivityRecord.APPLICATION_ACTIVITY_TYPE indicates to resume the task below this one in the
+     * task stack. */
+    private int mTaskToReturnTo = APPLICATION_ACTIVITY_TYPE;
 
     final ActivityManagerService mService;
 
@@ -123,9 +127,8 @@
 
     TaskRecord(ActivityManagerService service, int _taskId, Intent _intent, Intent _affinityIntent,
             String _affinity, ComponentName _realActivity, ComponentName _origActivity,
-            boolean _rootWasReset, boolean _askedCompatMode, int _taskType, boolean _onTopOfHome,
-            int _userId, String _lastDescription, ArrayList<ActivityRecord> activities,
-            long lastTimeMoved) {
+            boolean _rootWasReset, boolean _askedCompatMode, int _taskType, int _userId,
+            String _lastDescription, ArrayList<ActivityRecord> activities, long lastTimeMoved) {
         mService = service;
         taskId = _taskId;
         intent = _intent;
@@ -138,7 +141,7 @@
         rootWasReset = _rootWasReset;
         askedCompatMode = _askedCompatMode;
         taskType = _taskType;
-        mOnTopOfHome = _onTopOfHome;
+        mTaskToReturnTo = HOME_ACTIVITY_TYPE;
         userId = _userId;
         lastDescription = _lastDescription;
         mActivities = activities;
@@ -206,6 +209,14 @@
         }
     }
 
+    void setTaskToReturnTo(int taskToReturnTo) {
+        mTaskToReturnTo = taskToReturnTo;
+    }
+
+    int getTaskToReturnTo() {
+        return mTaskToReturnTo;
+    }
+
     void disposeThumbnail() {
         super.disposeThumbnail();
         for (int i=mActivities.size()-1; i>=0; i--) {
@@ -477,11 +488,15 @@
     }
 
     boolean isHomeTask() {
-        return taskType == ActivityRecord.HOME_ACTIVITY_TYPE;
+        return taskType == HOME_ACTIVITY_TYPE;
     }
 
     boolean isApplicationTask() {
-        return taskType == ActivityRecord.APPLICATION_ACTIVITY_TYPE;
+        return taskType == APPLICATION_ACTIVITY_TYPE;
+    }
+
+    boolean isOverHomeStack() {
+        return mTaskToReturnTo == HOME_ACTIVITY_TYPE || mTaskToReturnTo == RECENTS_ACTIVITY_TYPE;
     }
 
     public TaskAccessInfo getTaskAccessInfoLocked() {
@@ -623,7 +638,6 @@
         out.attribute(null, ATTR_ASKEDCOMPATMODE, String.valueOf(askedCompatMode));
         out.attribute(null, ATTR_USERID, String.valueOf(userId));
         out.attribute(null, ATTR_TASKTYPE, String.valueOf(taskType));
-        out.attribute(null, ATTR_ONTOPOFHOME, String.valueOf(mOnTopOfHome));
         out.attribute(null, ATTR_LASTTIMEMOVED, String.valueOf(mLastTimeMoved));
         if (lastDescription != null) {
             out.attribute(null, ATTR_LASTDESCRIPTION, lastDescription.toString());
@@ -669,7 +683,6 @@
         boolean rootHasReset = false;
         boolean askedCompatMode = false;
         int taskType = ActivityRecord.APPLICATION_ACTIVITY_TYPE;
-        boolean onTopOfHome = true;
         int userId = 0;
         String lastDescription = null;
         long lastTimeOnTop = 0;
@@ -697,8 +710,6 @@
                 userId = Integer.valueOf(attrValue);
             } else if (ATTR_TASKTYPE.equals(attrName)) {
                 taskType = Integer.valueOf(attrValue);
-            } else if (ATTR_ONTOPOFHOME.equals(attrName)) {
-                onTopOfHome = Boolean.valueOf(attrValue);
             } else if (ATTR_LASTDESCRIPTION.equals(attrName)) {
                 lastDescription = attrValue;
             } else if (ATTR_LASTTIMEMOVED.equals(attrName)) {
@@ -736,8 +747,7 @@
 
         final TaskRecord task = new TaskRecord(stackSupervisor.mService, taskId, intent,
                 affinityIntent, affinity, realActivity, origActivity, rootHasReset,
-                askedCompatMode, taskType, onTopOfHome, userId, lastDescription, activities,
-                lastTimeOnTop);
+                askedCompatMode, taskType, userId, lastDescription, activities, lastTimeOnTop);
 
         for (int activityNdx = activities.size() - 1; activityNdx >=0; --activityNdx) {
             final ActivityRecord r = activities.get(activityNdx);
@@ -756,7 +766,7 @@
                     pw.print(" userId="); pw.print(userId);
                     pw.print(" taskType="); pw.print(taskType);
                     pw.print(" numFullscreen="); pw.print(numFullscreen);
-                    pw.print(" mOnTopOfHome="); pw.println(mOnTopOfHome);
+                    pw.print(" mTaskToReturnTo="); pw.println(mTaskToReturnTo);
         }
         if (affinity != null) {
             pw.print(prefix); pw.print("affinity="); pw.println(affinity);
diff --git a/services/core/java/com/android/server/wm/WindowManagerService.java b/services/core/java/com/android/server/wm/WindowManagerService.java
index 1a0dd82..6fbb39d 100644
--- a/services/core/java/com/android/server/wm/WindowManagerService.java
+++ b/services/core/java/com/android/server/wm/WindowManagerService.java
@@ -10265,6 +10265,10 @@
         mPolicy.lockNow(options);
     }
 
+    public void showRecentApps() {
+        mPolicy.showRecentApps();
+    }
+
     @Override
     public boolean isSafeModeEnabled() {
         return mSafeMode;