游戏退出，安卓停止线程抛出异常

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
        // ȫ���ö�
        prepare(0);
        game = new Thread(thread);
        thread = new GameThread();
        game.start();
    }

   @Override
    protected void onRestart() {
        super.onRestart();
        ExitGame = false;
    }

   @Override
    protected void onPause() {
//        thread.stop();
        super.onPause();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
//        mOrientationListener.disable();

    }

    class GameThread implements Runnable {
        Message msg;
        boolean exitflag = false;

        @Override
        public void run() {// �[�