Android将闹钟设置为一天中的特定时间 [英] Android set repeating alarm for certain time of day

问题描述

我正在尝试设置一个重复警报，该警报将每分钟但仅在8:00和22:00之间下载文件.我觉得我真的很接近，但是看不到我正在犯的错误.当前，广播接收器未激活.如果将重复警报手动设置为 alarmManager.setRepeating(AlarmManager.RTC_WAKEUP，System.currentTimeMillis()+ 10000，60000，pendingIntent); ，它将正常运行.任何指导将不胜感激.

I am trying to set a repeating alarm that will will download a file every minute but only between 8:00 and 22:00. I feel like I'm really close but I can't see the error I'm making. Currently the broadcast receiver is not activating. If set the repeating alarm manually to alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis()+10000, 60000,pendingIntent); it works fine. Any guidance would be much appreciated.

protected void scheduleNextUpdate()
      {
        Intent intent = new Intent("TEST");
        PendingIntent pendingIntent =
            PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
        int updateInterval =  1;
        long nextUpdate =(60000 * updateInterval);

        long currentTimeMillis = System.currentTimeMillis();


        long nextUpdateTimeMillis = currentTimeMillis + nextUpdate;
        Time nextUpdateTime = new Time();
        nextUpdateTime.set(nextUpdateTimeMillis);

        if (nextUpdateTime.hour < 8 || nextUpdateTime.hour > 22)
        {
          nextUpdateTime.hour = 8;
          nextUpdateTime.minute = 0;
          nextUpdateTime.second = 0;
          nextUpdateTimeMillis = nextUpdateTime.toMillis(false) + DateUtils.DAY_IN_MILLIS;
        }

        AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
        alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis()+10000, nextUpdateTimeMillis,pendingIntent);

        boolean alarmUp = (PendingIntent.getBroadcast(this, 0, 
                new Intent("TEST"), 
                PendingIntent.FLAG_NO_CREATE) != null);

        if (alarmUp)
        {
            Log.d("myTag", "Alarm is already active");
        }
  }

推荐答案

您应将警报设置为在8:00至22:00之间重新发送，就像您提到的那样:

You should set your alarm reapeating when it is between 8:00 and 22:00 like you mentioned:

alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis()+10000, 60000,pendingIntent); 

这将每分钟重复一次.但是您必须明确取消警报.您可以在下载完成后取消它，方法是检查它是否已经是22:00.或在22:00时触发的另一个警报.否则它不会停止.

This will repeat every minute. But you must explicitly cancel the alarm. You can cancel it after download is completed, by checking if its already 22:00. Or by another alarm that will be triggered when it is 22:00. Otherwise it will not stop.

使用alarmManager.cancel (pendingIntent)

此处描述: http://developer .android.com/reference/android/app/AlarmManager.html#cancel(android.app.PendingIntent

希望这会有所帮助.

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