@Override
        public void onAnimationStop(Drawable drawable) {
          if (mPlayPauseToggleButton != null) {
            mPlayPauseToggleButton.setChecked(false);
          }
        }
Helper class that manages animation controls: Play / pause, reset and a seekbar.
samples/animation2/src/main/java/com/facebook/samples/animation2/utils/AnimationControlsManager.java