android - 这有什么问题？5分钟后它没有启动服务..而是仅在1分钟后发送

Question

这应该在 5 分钟后启动服务，但在 1 分钟后启动

Intent myIntent = new Intent(getApplicationContext(), BackgroundDataSender.class);  
            PendingIntent piHeartBeatService = PendingIntent.getService(this, 0, myIntent, PendingIntent.FLAG_UPDATE_CURRENT);
            AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
            alarmManager.cancel(piHeartBeatService);
            alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(), (5*60*1000) , piHeartBeatService);

Answer 1

你应该写：

alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,
    System.currentTimeMillis() + (5*60*1000),
    (5*60*1000) ,
    piHeartBeatService);

如果您希望闹钟在 5 分钟后启动（并在之后每 5 分钟重复一次）...

Answer 2

尝试这个

private static final long UPDATE_INTERVAL=300000;


Calendar cal=Calendar.getInstance();
            cal.add(Calendar.MINUTE,0);
            alarmManager.setInexactRepeating(AlarmManager.RTC_WAKEUP,cal.getTimeInMillis(),UPDATE_INTERVAL,pendingIntent);