private Handler mHandler = new Handler();
private Runnable mRunnable = new Runnable() {
    @Override
    public void run() {
        // 执行轮询任务
        pollServer();
        // 10秒后再次执行
        mHandler.postDelayed(this, 10000);
    }
};

// 开始轮询
mHandler.post(mRunnable);

// 停止轮询
mHandler.removeCallbacks(mRunnable);

AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(this, PollingReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0);

// 设置重复闹钟，每5分钟触发一次
alarmManager.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,
        SystemClock.elapsedRealtime(),
        5 * 60 * 1000,
        pendingIntent);

// 定义轮询工作
PeriodicWorkRequest pollWorkRequest =
        new PeriodicWorkRequest.Builder(PollWorker.class, 15, TimeUnit.MINUTES)
                .setConstraints(new Constraints.Builder()
                        .setRequiredNetworkType(NetworkType.CONNECTED)
                        .build())
                .build();

// 调度工作
WorkManager.getInstance(context).enqueueUniquePeriodicWork(
        "pollWork",
        ExistingPeriodicWorkPolicy.KEEP,
        pollWorkRequest);