Merge "Fix multi-window enter animation" into nyc-dev

am: 0c54d2c391

* commit '0c54d2c391b6d781fc660646e731f562bcd7037f':
  Fix multi-window enter animation

Change-Id: I85cb5a7ee1ce17e21bb52052c77352e065354734

packages/SystemUI/src/com/android/systemui/stackdivider/DividerView.java

@@ -1064,6 +1064,14 @@ public class DividerView extends FrameLayout implements OnTouchListener,
         int position = DockedDividerUtils.calculatePositionForBounds(event.initialRect,
                 mDockSide, mDividerSize);
         mEntranceAnimationRunning = true;
+
+        // Insets might not have been fetched yet, so fetch manually if needed.
+        if (mStableInsets.isEmpty()) {
+            SystemServicesProxy.getInstance(mContext).getStableInsets(mStableInsets);
+            mSnapAlgorithm = null;
+            initializeSnapAlgorithm();
+        }
+
         resizeStack(position, mSnapAlgorithm.getMiddleTarget().position,
                 mSnapAlgorithm.getMiddleTarget());
     }