@Override
 public void onManagerConnected(int status) {
   switch (status) {
     case LoaderCallbackInterface.SUCCESS:
       {
         mOpenCVInitiated = true;
         CameraGestureSensor.loadLibrary();
         mGestureSensor.start();
       }
       break;
     default:
       {
         super.onManagerConnected(status);
       }
       break;
   }
 }
 /** Called when the activity is resumed. The gesture detector is initialized. */
 @Override
 public void onResume() {
   super.onResume();
   if (!mOpenCVInitiated) return;
   mGestureSensor.start();
 }