Merge "Fix Transition test failure." into oc-mr1-dev

core/java/android/app/SharedElementCallback.java

@@ -27,6 +27,7 @@ import android.os.Bundle;
 import android.os.Parcelable;
 import android.transition.TransitionUtils;
 import android.view.View;
+import android.view.ViewGroup;
 import android.widget.ImageView;
 import android.widget.ImageView.ScaleType;
 
@@ -202,7 +203,8 @@ public abstract class SharedElementCallback {
         } else {
             mTempMatrix.set(viewToGlobalMatrix);
         }
-        return TransitionUtils.createViewBitmap(sharedElement, mTempMatrix, screenBounds);
+        ViewGroup parent = (ViewGroup) sharedElement.getParent();
+        return TransitionUtils.createViewBitmap(sharedElement, mTempMatrix, screenBounds, parent);
     }
 
     /**

core/java/android/transition/TransitionUtils.java

@@ -101,7 +101,7 @@ public class TransitionUtils {
 
         ImageView copy = new ImageView(view.getContext());
         copy.setScaleType(ImageView.ScaleType.CENTER_CROP);
-        Bitmap bitmap = createViewBitmap(view, matrix, bounds);
+        Bitmap bitmap = createViewBitmap(view, matrix, bounds, sceneRoot);
         if (bitmap != null) {
             copy.setImageBitmap(bitmap);
         }
@@ -156,11 +156,18 @@ public class TransitionUtils {
      *               returning.
      * @param bounds The bounds of the bitmap in the destination coordinate system (where the
      *               view should be presented. Typically, this is matrix.mapRect(viewBounds);
+     * @param sceneRoot A ViewGroup that is attached to the window to temporarily contain the view
+     *                  if it isn't attached to the window.
      * @return A bitmap of the given view or null if bounds has no width or height.
      */
-    public static Bitmap createViewBitmap(View view, Matrix matrix, RectF bounds) {
-        if (!view.isAttachedToWindow()) {
-            return null;
+    public static Bitmap createViewBitmap(View view, Matrix matrix, RectF bounds,
+            ViewGroup sceneRoot) {
+        final boolean addToOverlay = !view.isAttachedToWindow();
+        if (addToOverlay) {
+            if (sceneRoot == null || !sceneRoot.isAttachedToWindow()) {
+                return null;
+            }
+            sceneRoot.getOverlay().add(view);
         }
         Bitmap bitmap = null;
         int bitmapWidth = Math.round(bounds.width());
@@ -181,6 +188,9 @@ public class TransitionUtils {
             node.end(canvas);
             bitmap = ThreadedRenderer.createHardwareBitmap(node, bitmapWidth, bitmapHeight);
         }
+        if (addToOverlay) {
+            sceneRoot.getOverlay().remove(view);
+        }
         return bitmap;
     }