android - 带有 ContentObserver 的 AlarmManager

Question

我们如何设置一个AlarmManager, 为一个ContentObserver类 in PendingIntent？

可能的方法是：

  PendingIntent.getActivity

  PendingIntent.getService

  PendingIntent.getBroadCast

那么，如果可能的话，应该使用哪一个呢？

Answer 1

PendingIntent.getBroadCast 是您所遇到问题的正确答案。你可以使用如下

Intent alarm_intent = new Intent(getApplicationContext(),
                AlarmReceiver.class);
        // In reality, you would want to have a static variable for the request
        // code instead of 192837
        PendingIntent sender = PendingIntent.getBroadcast(this, 192837,
                alarm_intent, PendingIntent.FLAG_UPDATE_CURRENT);
        Calendar calendar = Calendar.getInstance();
        calendar.setTimeInMillis(System.currentTimeMillis());
        calendar.add(Calendar.MINUTE, 15);
        long interval = 900 * 1000; //
        // Get the AlarmManager service
        AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);
        am.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),
                interval, sender);