AlarmManager not fires on time in Android Lollipop

问题

i'm using this code to set Alarm in Android KitKat and lollipop:

    AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE);
    Intent i = new Intent(AlarmService.this, Reciver.class);
    PendingIntent pi = PendingIntent.getBroadcast(AlarmService.this, 1201, i, PendingIntent.FLAG_UPDATE_CURRENT);
    Calendar c = Calendar.getInstance();
    c.set(Calendar.HOUR_OF_DAY, 9);
    c.set(Calendar.MINUTE, 0);
    c.set(Calendar.SECOND, 0);
    am.setExact(AlarmManager.RTC_WAKEUP, c.getTimeInMillis(), pi);

this code is works good on Android KitKat but on Android Lollipop its fires With 10 or 5 minutes delayed.

回答1:

This is a known bug in Android Lollipop and has been reported by several other users on Android's official bug tracker. There's no immediate solution to this problem, but you can get updates regarding this issue here: https://code.google.com/p/android/issues/detail?id=82001

来源：https://stackoverflow.com/questions/27668444/alarmmanager-not-fires-on-time-in-android-lollipop