用alarmmanager 多次发送PendingIntent

遇到如下问题

pendingintent传值经常获取到的值是第一次的值或者null，这个跟第二个参数和最后一个参数选择有关系.

将最后一个参数设置成

PendingIntent.FLAG_UPDATE_CURRENT

即可解决问题。

代码

注意：此代码仅仅实现延时操作，若需要循环发送，需要在receiver将service启动。

 @Override

    public int onStartCommand(Intent intent, int flags, int startId) {

        // TODO Auto-generated method stub

        AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE);

        int random;

        // get a random number

        random = (int)(Math.random() * 10 + 1);

        long triggerTime = SystemClock.elapsedRealtime() + 5 * 1000;

        // get pid and tid

        int pid = Process.myPid();

        long tid = Process.myTid();

        Intent i = new Intent(SEND_ACTION);

        i.putExtra(RANDOM_NUM, random);

        i.putExtra(SERVICE_PID, pid);

        i.putExtra(SERVICE_TID, tid);

        // get a pending intent which can send braodcast

        PendingIntent pi = PendingIntent

                .getBroadcast(this, 0, i, PendingIntent.FLAG_CANCEL_CURRENT);

        // 5seconds later send the pendingintent

        alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, triggerTime, pi);

        return super.onStartCommand(intent, flags, startId);

    }