@Override
 public boolean onKeyDown(int keyCode, KeyEvent event) {
   // TODO Auto-generated method stub
   switch (keyCode) {
     case KeyEvent.KEYCODE_VOLUME_UP:
       mGameView.y -= 3;
       break;
     case KeyEvent.KEYCODE_VOLUME_DOWN:
       mGameView.y += 3;
       break;
     case KeyEvent.KEYCODE_DPAD_DOWN:
       mGameView.y += 3;
       break;
     case KeyEvent.KEYCODE_DPAD_UP:
       mGameView.y -= 3;
       break;
     case KeyEvent.KEYCODE_DPAD_LEFT:
       mGameView.x -= 3;
       break;
     case KeyEvent.KEYCODE_DPAD_RIGHT:
       mGameView.x += 3;
       break;
   }
   return false;
 }