void setResizeDimLayer(boolean visible, int targetStackId, float alpha) {
SurfaceControl.openTransaction();
TaskStack stack = mDisplayContent.mService.mStackIdToStack.get(targetStackId);
- if (visible && stack != null) {
+ boolean visibleAndValid = visible && stack != null;
+ if (visibleAndValid) {
stack.getDimBounds(mTmpRect);
- mDimLayer.setBounds(mTmpRect);
- mDimLayer.show(mDisplayContent.mService.mLayersController.getResizeDimLayer(), alpha,
- 0 /* duration */);
- } else {
+ if (mTmpRect.height() > 0) {
+ mDimLayer.setBounds(mTmpRect);
+ mDimLayer.show(mDisplayContent.mService.mLayersController.getResizeDimLayer(),
+ alpha, 0 /* duration */);
+ } else {
+ visibleAndValid = false;
+ }
+ }
+ if (!visibleAndValid) {
mDimLayer.hide();
}
SurfaceControl.closeTransaction();