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在Android，Java上编程重复警报的有效方法

[英]Efficient way to program repeating alarms on Android, Java

原文 2015-07-31 20:55:13 9 1 java/ android/ alarm

From what I was told, there are several different ways of implementing in Java for Android devices what I want to accomplish, which is basically to do what the basic alarm functionality in most smartphones does, but in bulk. 据我了解，有几种不同的方法可以在Java设备上实现我想实现的Android设备，这基本上是大多数智能手机的基本警报功能，但它们要大量使用。 That is to say that instead of having alarms for 7:00, 7:05, 7:10, 7:15, and 7:20, you can just put a group of alarms between 7:00 and 7:20. 也就是说，除了在7：00、7：05、7：10、7：15和7:20发出警报外，您可以在7:00和7:20之间放置一组警报。 I want this to have three main repeating options: specified days of the week, specified days of the month, and one specified day with no repetition. 我希望它具有三个主要的重复选项：一周的指定天，一个月的指定天以及一个无重复的指定天。 I am trying to solve this on my own, though I would like to see how other programmers go about this problem. 尽管我想看看其他程序员如何解决这个问题，但我还是想独自解决。 Note that while I am somewhat experienced in Java, I'm not too experienced with Android development. 请注意，尽管我对Java有一定的经验，但对Android开发却不太了解。

1 个解决方案

The most efficient way is to only schedule the next alarm of each group using AlarmManager . 最有效的方法是仅使用AlarmManager安排每个组的下一个警报。

Use setExact() in API 19+ and set() on older versions. 使用setExact()的API 19+和set()旧版本。 It's required to use setExact() when targeting newer versions if you want the alarm to go off at the exact planned time. 如果您希望警报在确切的计划时间响起，则在定位较新版本时需要使用setExact() 。

When the alarm goes off it will wake up a registered BroadcastReceiver , from which you can schedule the next alarm of the group, if any. 警报响起时，它将唤醒已注册的BroadcastReceiver ，您可以从中安排该组的下一个警报（如果有）。