我需要在设置 AlarmManager 20分钟后触发一段代码。
I need to trigger a block of code after 20 minutes from the AlarmManager being set.
有人可以给我看一下如何在Android中使用 AlarmManager 的示例代码?
Can someone show me sample code on how to use an AlarmManager in ِAndroid?
我一直在玩一些代码几天,它将无法正常工作。
I have been playing around with some code for a few days and it just won't work.
推荐答案一些示例代码并非如此简单code> AlarmManager 。
"Some sample code" is not that easy when it comes to AlarmManager.
这是一个显示 AlarmManager :
AlarmManager mgr=(AlarmManager)context.getSystemService(Context.ALARM_SERVICE); Intent i=new Intent(context, OnAlarmReceiver.class); PendingIntent pi=PendingIntent.getBroadcast(context, 0, i, 0); mgr.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime(), PERIOD, pi);在这个例子中,我使用 setRepeating()。如果你想要一次性警报,你只需要使用 set()。请确保在与 set()的初始参数中使用的时间相同的时间内启动警报的时间。在上面的例子中,我使用 AlarmManager.ELAPSED_REALTIME_WAKEUP ,所以我的时基是 SystemClock.elapsedRealtime()。
In this example, I am using setRepeating(). If you want a one-shot alarm, you would just use set(). Be sure to give the time for the alarm to start in the same time base as you use in the initial parameter to set(). In my example above, I am using AlarmManager.ELAPSED_REALTIME_WAKEUP, so my time base is SystemClock.elapsedRealtime().
这是一个更大的样本项目展示了这种技术。
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Android:如何使用AlarmManager
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