Android:如何停止服务中的可运行触发消息

public class MyService extends Service {
    private ExecutorService threadPool;

    @Override
    public void onCreate() {
        super.onCreate();
        threadPool = Executors.newFixedThreadPool(1);
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        // 创建可运行对象
        Runnable myRunnable = new Runnable() {
            @Override
            public void run() {
                // 处理需要触发的消息
                // ...
            }
        };

        // 提交可运行对象给线程池执行
        threadPool.submit(myRunnable);

        // 返回START_STICKY或其他适当的返回值
        return START_STICKY;
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        // 停止线程池中的所有线程
        threadPool.shutdown();
    }

    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }
}