小编Kum*_* C.的帖子

背景： 我有一个在 Android 7.1 上运行的 Android 应用程序。使用 AlarmManage 设置重复任务，以便每天在特定时间执行任务。代码如下：

AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
long startInMs = getComing9AM();
Intent intent = ...; //an intent to be run when alarm time is up.
PendingIntent ScheduledIntent = PendingIntent.getBroadcast(context, id, intent, 0);
am.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP, startInMs, ScheduledIntent);


private long getComing9AM(){
    long now = System.currentTimeMillis();
    long today = getToday9AM();
    return (now < today? today:getTomorrow9AM());
}

private long getToday9AM(){
    Calendar calendar = Calendar.getInstance();
    calendar.setTimeInMillis(System.currentTimeMillis());
    calendar.set(Calendar.HOUR_OF_DAY, 9);
    calendar.set(Calendar.MINUTE, 0);
    calendar.set(Calendar.SECOND, 0);
    return calendar.getTimeInMillis();
}

private long getTomorrow9AM(){
    return …