如果SendBroadcast活动或通知 [英] SendBroadcast if Activity or Notification

问题描述

我有一个应用程序，下载在后台服务的数据，我希望能够，如果他们当前正在运行的应用程序更新活动的用户界面或触发通知，如果他们不。

I have an application that downloads data in a background service and I want to be able to update an activity UI if they are currently running the application or trigger a Notification if they are not.

我如何知道如果应用程序目前是在前景？

How do I know if the application is currently in the foreground?

我可以在活动注册一个BroadcastReceiver内部类，如果触发该公司在前台以其他方式使用通知，但我不知道我怎么能检查采取什么行动​​。

I could register a BroadcastReceiver inner class in the activity and trigger this if its in the foreground otherwise uses notification but I don't know how I can check what action to take.

感谢您的任何答复。

推荐答案

使用一个有序的广播，与该活动实施高优先级的的BroadcastReceiver 和一个独立的低优先级的BroadcastReceiver 提高通知。我有一个博客帖子涉及这一具体议题

Use an ordered broadcast, with the activity implementing a high-priority BroadcastReceiver and a separate low-priority BroadcastReceiver to raise the Notification. I have a blog post covering this specific topic.

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