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在Android上取消注册BroadcastReceiver

[英]Unregister BroadcastReceiver on Android

原文 2015-08-14 22:18:44 6 1 android/ broadcastreceiver

I think I'm not seeing the bigger picture here, or have miss understood how BroadcastReceiver works. 我想我在这里看不到更大的图景，或者错过了了解BroadcastReceiver工作原理。

Let's imagine a dummy app that every time that the user receives a call, the app register the caller number at a file at the SD card. 假设有一个虚拟应用程序，该应用程序每次用户收到呼叫时，都会在SD卡上的文件中注册呼叫者号码。 To do that, I'd simply create a BroadcastReceiver that starts a Service every time the user receives a call. 为此，我只需创建一个BroadcastReceiver即可在用户每次收到呼叫时启动Service 。

Now, If I want that app to works, I understand I can't call unregisterReceiver() at the onPause() method. 现在，如果我希望该应用程序正常运行，我知道我无法在onPause()方法上调用unregisterReceiver() 。 But in the other hand, If I run the app sometimes I get an exception: 但另一方面，如果我运行该应用程序，有时会出现异常：

Activity has leaked IntentReceiver that was originally registered here. 活动泄漏了最初在此处注册的IntentReceiver。 Are you missing a call to unregisterReceiver()? 您是否缺少对unregisterReceiver（）的调用？

So, what I'm missing here? 那么，我在这里想念的是什么？ How can my dummy app receive callback at every call if I have to call unregisterReceiver() ? 如果必须调用unregisterReceiver()我的虚拟应用程序如何在每次调用时接收回调？

Thank you, 谢谢，

1 个解决方案

How can my dummy app receive callback at every call if I have to call unregisterReceiver()? 如果必须调用unregisterReceiver（），我的虚拟应用程序如何在每次调用时接收回调？

There are two ways to set up a BroadcastReceiver : 设置BroadcastReceiver有两种方法：

registerReceiver() , which is only useful for a process that will be running for other reasons registerReceiver() ，仅对由于其他原因而正在运行的进程有用
<receiver> in the manifest 清单中的<receiver>

Your situation sounds like a case for using <receiver> . 您的情况听起来像是使用<receiver> 。