如何检查服务是否运行在Android上？ [英] How to check if a service is running on Android?

问题描述

我如何检查，如果后台服务（在Android）运行？

How do I check if a background service (on Android) is running?

我想要切换服务的状态一个Android的活动 - 它让我打开它，如果它是关闭的，关闭，如果它是在

I want an Android activity that toggles the state of the service -- it lets me turn it on if it is off and off if it is on.

推荐答案

我不久前有同样的问题。由于我的服务是本地的，我最终只使用在服务类中的静态字段来切换状态，所描述的hackbod <一href="http://groups.google.com/group/android-developers/browse_thread/thread/8c4bd731681b8331/bf3ae8ef79cad75d">here

I had the same problem not long ago. Since my service was local, I ended up simply using a static field in the service class to toggle state, as described by hackbod here

修改（备案）：

下面是该解决方案提出了hackbod：

Here is the solution proposed by hackbod:

如果您的客户端和服务器code是相同的.apk文件的一部分，你是   一个具体意图绑定到服务（一个指定的   准确的服务类），那么你可以简单地让您的服务设置   当它运行您的客户端可以查询全局变量。

If your client and server code is part of the same .apk and you are binding to the service with a concrete Intent (one that specifies the exact service class), then you can simply have your service set a global variable when it is running that your client can check.

我们故意没有一个API来检查服务是否   运行，因为，几乎没有失败，当你想要做的事   这样你最终的竞争条件在code。

We deliberately don't have an API to check whether a service is running because, nearly without fail, when you want to do something like that you end up with race conditions in your code.

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