android – 每天准确重复报警(报警管理器)

我每天都会重复闹钟.
但它会有几秒或几分钟的错误.
我怎样才能让它更准确？

PendingIntent pendingIntent = PendingIntent.getbroadcast(getActivity(),notificationId,myIntent,PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager)getActivity().getSystemService(Context.ALARM_SERVICE);
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY,12);
calendar.set(Calendar.MINUTE,30);
long startUpTime = calendar.getTimeInMillis();
if (System.currentTimeMillis() > startUpTime) {
    startUpTime = startUpTime + 24*60*60*1000;
}
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,startUpTime,24*60*60*1000,pendingIntent);@H_404_5@

解决方法

尝试添加

calendar.set(Calendar.SECOND,00);@H_404_5@ 
 
和改变
 
  
 
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,pendingIntent);@H_404_5@ 
 
至
 
  
 
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,AlarmManager.INTERVAL_DAY,pendingIntent);@H_404_5@