@Override
  public int onStartCommand(Intent intent, int flags, int startId) {
    Log.i("ManifestCheckerService", "onStartCommand");

    startCheck();

    // If we get killed, after returning from here, restart
    return START_STICKY;
  }
 void doCheck(ManifestCheckerCallback cb) {
   mCallback = cb;
   startCheck();
 }