出于警报管理器的目的，未决意图对于应用程序或设备是否具有唯一的ID？
[英]For purposes of Alarm Manager, does a pendingintent have unique id for app or for device?
问题描述
I want to ask about AlarmManager . 
我想问一下AlarmManager 。 When I need to cancel an alarm I must call cancel with the alarm's PendingIntent . 当我需要取消警报时，必须使用警报的PendingIntent调用cancel。 So, is it possible to accidentally cancel an alarm that another app has set with the same id ? 因此，是否可能会意外取消另一个应用程序已设置相同id的警报？ Also, how can I find all alarms set with AlarmManager by my app? 另外，如何找到我的应用程序使用AlarmManager设置的所有警报？
2 个解决方案
解决方案1
0 2017-09-21 06:31:26
The alarms you create in your app are unique to your app and hence they can have same Ids used in another project/app. 您在应用程序中创建的警报对于您的应用程序是唯一的，因此它们可以具有在另一个项目/应用程序中使用的相同ID。
There is no way to get all the alarms set in AlarmManager programmatically. 无法以编程方式获取在AlarmManager中设置的所有警报。 You will have to maintain a list of alarms you set in preferences or in database. 您将必须维护在首选项或数据库中设置的警报列表。
解决方案2
0 2017-09-21 06:33:55
For cancellation, the PendingIntent is identified by the contained Intent according to filterEquals , which checks for "action, data, type, class, and categories", but doesn't look at the intent's extras. 对于取消，PendingIntent由根据filterEquals包含的Intent进行标识 ，该filterEquals检查“动作，数据，类型，类和类别”，但不查看该Intent的额外内容。
As a rule of thumb, construct the pending intent as you did when you set the alarm and you'll cancel the right one. 根据经验，应像设置警报时一样构造挂起的意图，然后取消正确的意图。
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