警报

编程入门行业动态更新时间:2024-10-28 08:21:56

本文介绍了警报-一段时间后停止鸣响的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！问题描述

我有一个警报，每小时触发一次，并在特定条件下执行代码它可以正常运行，但是当我未打开我的应用程序时(警报初始化是在应用程序启动时启动)，一段时间后它停止了，这些是日志:

I have an alarm that fires every hour and executes code in specific conditions It works smoothly, but when I leave my app unopened (the alarm initialization is on app startup) it stops after some time, these are the logs:

8/2/2020 6:27 AM Initializing Alarm, next alarm will fire at 8/2/2020 3:27 AM 8/2/2020 6:27 AM Application starting. 8/2/2020 6:28 AM Application stopped. 8/2/2020 6:28 AM Reports alarm received. 8/2/2020 7:28 AM Reports alarm received. 8/2/2020 8:28 AM Reports alarm received. 8/2/2020 9:28 AM Reports alarm received. 8/2/2020 9:28 AM Reports alarm finished. 8/2/2020 10:28 AM Reports alarm received. 8/2/2020 10:28 AM Reports alarm finished. 8/2/2020 11:28 AM Reports alarm received. 8/2/2020 11:28 AM Reports alarm finished. 8/2/2020 12:30 PM Reports alarm received. 8/2/2020 12:30 PM Reports alarm finished. 8/2/2020 1:30 PM Reports alarm received. 8/2/2020 1:30 PM Reports alarm finished. 8/2/2020 2:30 PM Reports alarm received. 8/2/2020 2:30 PM Reports alarm finished. 8/3/2020 8:13 AM Initializing Alarm, next alarm will fire at 8/3/2020 5:13 AM

您看到第二天的下午2:30到8:13之间没有警报发出

As you see between 2:30 PM to 8:13 AM the next day, no alarms were fired

这是初始化:

alarmMgr.SetInexactRepeating(AlarmType.RtcWakeup, calendar.TimeInMillis, 1000 * 60 * 60, alarmIntent);

我已获得WAKE_LOCK权限.

I have acquired the WAKE_LOCK permission.

预先感谢

推荐答案

当应用程序在前景或后台运行时，AlarmManager可以完美运行.

AlarmManager work perfectly when the App is running in Foreground or in Background.

但是当应用退出/强制停止/被杀死时，警报管理器将被取消.

But when the App is quit/force-stopped/killed , Alarm Manager is cancelled.