@Override
  public boolean onTouchEvent(MotionEvent event) {
    FLog.v(TAG, "onTouchEvent: action: ", event.getAction());
    if (mIsEnabled && mIsGestureZoomEnabled) {
      return mGestureDetector.onTouchEvent(event);
    }
    return false;
  }
Notifies controller of the received touch event.
samples/zoomable/src/main/java/com/facebook/samples/zoomable/DefaultZoomableController.java