Android的AlarmManager [英] Android AlarmManager
问题描述
是否有人可以告诉我如何使用 AlarmManager
在Android的一些样本code。
Can someone please show me some sample code on how to use an AlarmManager
in ِAndroid.
我一直在玩弄一些code几天,它只是将无法正常工作。
I have been playing around with some code for a few days and it just won't work.
我需要在20分钟后触发的code块中的 AlarmManager
被设置。
I need to trigger a block of code after 20 minutes from the AlarmManager
being set.
推荐答案
一些示例code是不是那么容易当谈到 AlarmManager
。
"Some sample code" is not that easy when it comes to AlarmManager
.
下面是一个片段展示的设置 AlarmManager
:
Here is a snippet showing the setup of 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()
。如果你想一杆报警,你只需要使用设置()
。一定要给予时间报警启动的同时基地为您在初始参数使用设置()
。在我上面的例子中,我使用 AlarmManager.ELAPSED_REALTIME_WAKEUP
,所以我的时间基准是 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()
.
下面是显示这种技术更大的样本项目。
Here is a larger sample project showing this technique.
这篇关于Android的AlarmManager的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!