问题描述
我有这个code
Calendar c = new GregorianCalendar();
c.add(Calendar.DAY_OF_YEAR, 1);
c.set(Calendar.HOUR_OF_DAY, 23);
c.set(Calendar.MINUTE, 22);
c.set(Calendar.SECOND, 0);
c.set(Calendar.MILLISECOND, 0);
// We want the alarm to go off 30 seconds from now.
long firstTime = SystemClock.elapsedRealtime();
firstTime += 30*1000;
long a=c.getTimeInMillis();
// Schedule the alarm!
AlarmManager am = (AlarmManager)ctx.getSystemService(Context.ALARM_SERVICE);
am.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,
c.getTimeInMillis(), 1*60*60*1000, sender);
这是不是在执行 23:22小时
我在做什么错了?我注意到firstTime和c.getTimeInMillis()差别很大的大小和长度。当我使用firstTime,所以当设定为30秒,报警被执行以及
What I am doing wrong? I noticed firstTime and c.getTimeInMillis() differs a lot in size and length. When I use firstTime, so when set to 30 seconds, the alarm is executed well.
推荐答案
正在使用 AlarmManager.ELAPSED_REALTIME_WAKEUP
标志,但使用的是日历对象。这两件事情不走在一起。
You are using the AlarmManager.ELAPSED_REALTIME_WAKEUP
flag, but you are using a Calendar object. These two things don't go together.
您需要使用 AlarmManager.RTC 或 AlarmManager.RTC_WAKEUP
如果您指定的闹钟时间用日历或Date对象(毫秒自1970年以来)。
You need to use AlarmManager.RTC or AlarmManager.RTC_WAKEUP
if you are specifying the alarm time using a Calendar or Date object (milliseconds since 1970).
您使用 AlarmManager.ELAPSED_REALTIME
或 AlarmManager.ELAPSED_REALTIME_WAKEUP
当你通过指定的报警时间 SystemClock.elapsedRealtime()
(因为手机启动毫秒)。
You use AlarmManager.ELAPSED_REALTIME
or AlarmManager.ELAPSED_REALTIME_WAKEUP
when you are specifying the alarm time via SystemClock.elapsedRealtime()
(milliseconds since the phone booted).
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