广播接收器作为Android中的内部类 [英] Broadcast Receiver as inner class in Android

问题描述

在我的代码中，有一个内部类扩展了 BroadcastReceiver .

In my code there is an inner class that extends BroadcastReceiver.

并且我已将以下行添加到 AndroidManifest.xml :

And I have added the following line to the AndroidManifest.xml:

<receiver android:name="OuterClass$InnerClass android:enabled="true"/>

但是我收到以下错误:

无法实例化接收者org.example.test.OuterClass $ InnerClass

unable to instantiate receiver org.example.test.OuterClass$InnerClass

我该如何解决这个问题?

How can I solve this issue ?

推荐答案

(非静态) 内部类 不能由Android通过AndroidManifest.xml(

您可以通过以下方式动态注册此类的实例:Context.registerReceiver()或静态发布实现通过您的AndroidManifest.xml中的标签.

因此，您可以动态注册接收者.在我的应用程序中，我想对使用Google的云到设备消息传递(C2DM)做同样的事情，而我最初的AndroidManifest.xml包含:

So you can dynamically register the receiver. In my application I wanted to do the same for using Google's Cloud to Device Messaging (C2DM) and my original AndroidManifest.xml contained:

<application...>
    <receiver android:name=".MyC2dmReceiver" android:permission="com.google.android.c2dm.permission.SEND">
        <intent-filter>
            <action android:name="com.google.android.c2dm.intent.RECEIVE" />
            <category android:name="com.example.myapp" />
        </intent-filter>
        <intent-filter>
            <action android:name="com.google.android.c2dm.intent.REGISTRATION" />
            <category android:name="com.example.myapp" />
        </intent-filter>
    </receiver>
</application>

我删除了 receiver 部分，并动态注册了接收者，如下所示:

I removed that receiver section and dynamically registered the receiver as follows:

public class AndroidService extends IntentService
{
    ... 
    @Override
    public int onStartCommand(Intent intent, int flags, int startId)
    {
        IntentFilter filter = new IntentFilter();
        filter.addAction("com.google.android.c2dm.intent.RECEIVE");
        filter.addAction("com.google.android.c2dm.intent.REGISTRATION");
        filter.addCategory("com.example.myapp");
        this.registerReceiver(new MyC2dmReceiver(), filter, "com.google.android.c2dm.permission.SEND", null);
        return super.onStartCommand(intent,flags,startId);
    }

    public class MyC2dmReceiver extends BroadcastReceiver
    {
        ...
    }
}

这篇关于广播接收器作为Android中的内部类的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！