Android的：如何以聚焦属于不同的任务后台的活动？ [英] Android: How to give focus to a background Activity belonging to a different task?

问题描述

假设用户已经开始了我的应用程序，然后关闭使用的浏览器（所以我们有2台任务运行）。过了一会儿，事情发生在我的应用程序需要用户的关注，所以它张贴通知以通知用户。有没有办法从背景带给我的应用程序的任务（和堆栈顶部的活动）出来的时候用户点击我的通知？

Say that the user has started my App and then switched off to use the Browser (so we have 2 sets of Tasks running). After a while, something happens to my app that requires the user's attention, so it posts a notification to notify the user. Is there a way to bring my App's task (and the Activity on top of the stack) out from the background when user clicks on my notification?

推荐答案

在您的通知你打电话的意图，开始您的应用程序，如果你确保它具有以下标志那么它将被带到前面，而不是创建另一个实例：

In your notification you call an intent to start your app, if you ensure it has the following flags then it will be brought to front rather than creating another instance:

 Intent contentIntent = new Intent(this, ABC.class);
 contentIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | INTENT.FLAG_ACTIVITY_SINGLE_TOP);

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