Merge "Avoid repositioning unattached overlay views" into jb-mr2-dev

core/java/android/view/ViewGroupOverlay.java

@@ -47,7 +47,8 @@ public class ViewGroupOverlay extends ViewOverlay {
      * animation effect.</p>
      *
      * <p>If the view has a parent, the view will be removed from that parent
-     * before being added to the overlay. Also, the view will be repositioned
+     * before being added to the overlay. Also, if that parent is attached
+     * in the current view hierarchy, the view will be repositioned
      * such that it is in the same relative location inside the activity. For
      * example, if the view's current parent lies 100 pixels to the right
      * and 200 pixels down from the origin of the overlay's

core/java/android/view/ViewOverlay.java

@@ -157,7 +157,8 @@ public class ViewOverlay {
         public void add(View child) {
             if (child.getParent() instanceof ViewGroup) {
                 ViewGroup parent = (ViewGroup) child.getParent();
-                if (parent != mHostView) {
+                if (parent != mHostView && parent.getParent() != null &&
+                        parent.mAttachInfo != null) {
                     // Moving to different container; figure out how to position child such that
                     // it is in the same location on the screen
                     int[] parentLocation = new int[2];