Android计划从服务重复警报

Question

我正在尝试在Android中安排重复闹钟。第一个警报工作正常，但第二个警报从未被解雇。我知道我的错误在于服务类。我试图在Wakeful接收器中重新安排它并且工作正常，但我需要在服务停止之前完成它。

// Alarm fired from the activity and works!


private void startPingRepeatingAlarm() {
    Intent intent = new Intent(this, PingReceiver.class);
    PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
    AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);
    Log.i("Ping WakefulReceiver", "Starting alarm @ " + new Date().toString());
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        am.setExactAndAllowWhileIdle(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime() + 1000, pendingIntent);
    } else {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            am.setExact(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime() + 1000, pendingIntent);
        } else {
            am.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime() + 1000, pendingIntent);
        }
    }
}

接收者：

public class enter code herePingReceiver extends WakefulBroadcastReceiver {
    public PingReceiver() {
    }

        @Oventer code hereerride
        public void onReceive(Context context, Intent intent) {
            Log.i("Ping WakefulReceiver", "Received alarm intent @ " + new Date().toString());
            startWakefulService(context,new Intent(context, PingService1.class));
        }
    }

服务内码：

@Override
    public int onStartCommand(final Intent intent, int flags, int startId) {
        final Intent in = intent;

        new AsyncTask<Void,Void,Void>(){

            @Override
            protected Void doInBackground(Void... params) {
                Log.i("Ping WakefulReceiver", "Rescheduling alarm @ " + new Date().toString());
                return null;
            }

            @Override
            protected void onPostExecute(Void aVoid) {
                alarmMgr = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
                Intent intent = new Intent(getBaseContext(), PingService1.class);
                pendingIntent = PendingIntent.getBroadcast(getBaseContext(), 0, intent, 0);

                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                    alarmMgr.setExactAndAllowWhileIdle(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime() + 1000, pendingIntent);
                } else {
                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
                        alarmMgr.setExact(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime() + 1000, pendingIntent);
                    } else {
                        alarmMgr.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime() + 1000, pendingIntent);
                    }
                }

                PingReceiver.completeWakefulIntent(in);
                stopSelf();
            }
        }.execute();
        return START_STICKY;
    }

有什么想法吗？