Merge changes I0c466350,I09a9cd43,I8b2a0819 into pi-dev

* changes:
  Reset dummy stack view tasks after computing transition into Recents
  Don't update onboarding if there is no valid running task.
  Only check screen pinning state on touch down.

packages/SystemUI/shared/src/com/android/systemui/shared/recents/view/AppTransitionAnimationSpecsFuture.java

@@ -49,6 +49,10 @@ public abstract class AppTransitionAnimationSpecsFuture {
                     mHandler.post(mComposeTask);
                 }
                 List<AppTransitionAnimationSpecCompat> specs = mComposeTask.get();
+                // Clear reference to the compose task this future holds onto the reference to it's
+                // implementation (which can leak references to the bitmap it creates for the
+                // transition)
+                mComposeTask = null;
                 if (specs == null) {
                     return null;
                 }

packages/SystemUI/src/com/android/systemui/recents/RecentsImpl.java

@@ -276,6 +276,9 @@ public class RecentsImpl implements ActivityOptions.OnAnimationFinishedListener
         }
     };
 
+    // Used to reset the dummy stack view
+    private final TaskStack mEmptyTaskStack = new TaskStack();
+
     public RecentsImpl(Context context) {
         mContext = context;
         mHandler = new Handler();
@@ -1108,6 +1111,10 @@ public class RecentsImpl implements ActivityOptions.OnAnimationFinishedListener
             }
         });
         EventBus.getDefault().send(hideMenuEvent);
+
+        // Once we have launched the activity, reset the dummy stack view tasks so we don't hold
+        // onto references to the same tasks consumed by the activity
+        mDummyStackView.setTasks(mEmptyTaskStack, false /* notifyStackChanges */);
     }
 
     /**** OnAnimationFinishedListener Implementation ****/

packages/SystemUI/src/com/android/systemui/recents/RecentsOnboarding.java

@@ -96,6 +96,9 @@ public class RecentsOnboarding {
         public void onTaskStackChanged() {
             ActivityManager.RunningTaskInfo info = ActivityManagerWrapper.getInstance()
                     .getRunningTask(ACTIVITY_TYPE_UNDEFINED /* ignoreActivityType */);
+            if (info == null) {
+                return;
+            }
             if (mBlacklistedPackages.contains(info.baseActivity.getPackageName())) {
                 hide(true);
                 return;

packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarGestureHelper.java

@@ -73,6 +73,7 @@ public class NavigationBarGestureHelper implements TunerService.Tunable, Gesture
     private int mTouchDownY;
     private boolean mDownOnRecents;
     private VelocityTracker mVelocityTracker;
+    private boolean mIsInScreenPinning;
 
     private boolean mDockWindowEnabled;
     private boolean mDockWindowTouchSlopExceeded;
@@ -105,6 +106,9 @@ public class NavigationBarGestureHelper implements TunerService.Tunable, Gesture
     }
 
     public boolean onInterceptTouchEvent(MotionEvent event) {
+        if (event.getActionMasked() == MotionEvent.ACTION_DOWN) {
+            mIsInScreenPinning = mNavigationBarView.inScreenPinning();
+        }
         if (!canHandleGestures()) {
             return false;
         }
@@ -269,7 +273,7 @@ public class NavigationBarGestureHelper implements TunerService.Tunable, Gesture
     }
 
     private boolean canHandleGestures() {
-        return !mNavigationBarView.inScreenPinning() && !mStatusBar.isKeyguardShowing()
+        return !mIsInScreenPinning && !mStatusBar.isKeyguardShowing()
                 && mStatusBar.isPresenterFullyCollapsed();
     }