Android 安卓可以'；我找不到我的收音机。我做错了什么？

我正在尝试创建一个在启动时启动的服务

我在adb中看到以下错误：

05-31 10:14:24.060 E/AndroidRuntime( 1583):java.lang.RuntimeException: Unable to instantiate receiver MyNameSpace.MyClass.MyBootReceiver: java.lang.ClassNotFoundException: Didn't find class "MyNameSpace.MyClass.MyBootReceiver" on path: /data/app/MyNameSpace.MyClass-1.apk
05-31 10:14:24.060 E/AndroidRuntime( 1583): Caused by: java.lang.ClassNotFoundException: Didn't find class "MyNameSpace.MyClass.MyBootReceiver" on path: /data/app/MyNameSpace.MyClass-1.apk

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
          android:versionCode="1" 
          android:versionName="1.0" 
          package="MyNamespace.MyClass">
    <uses-sdk />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>

  <application>
    <receiver android:name=".MyBootReceiver">
      <intent-filter>
        <action android:name="android.intent.action.BOOT_COMPLETED" />
      </intent-filter>
    </receiver>
    <activity android:name=".MyActivity"></activity>

  </application>    
</manifest>

namespace MyNamespace
{
    [Service]
    [IntentFilter(new String[] { "com.xamarin.MyClass" })]
    public class MyClass : IntentService
    {
        private IBinder binder;

        public const string MyUpdatedAction = "MyUpdated";

        protected override void OnHandleIntent(Intent intent)
        {
            var myIntent = new Intent(MyUpdatedAction);

            SendOrderedBroadcast(myIntent, null);
        }

        public override IBinder OnBind(Intent intent)
        {
            binder = new MyServiceBinder(this);
            return binder;
        }

        [BroadcastReceiver]
        [IntentFilter(new string[] { MyUpdatedAction }, Priority = (int)IntentFilterPriority.LowPriority)]
        public class MyBootReceiver : BroadcastReceiver
        {
            public override void OnReceive(Context context, Android.Content.Intent intent)
            {
                Log.Info("MyTrace", "MyReceiver OnReceive action: " + intent.Action);

                if (intent.Action.Contains("BOOT_COMPLETED"))
                {
                    var pushIntent = new Intent(MyUpdatedAction);
                    context.StartService(pushIntent);

                }
            }
        }
    }
}

问题是，我可以肯定地看到，

mybootceiver

类作为

MyClass

的子类存在于

MyNameSpace

中，因此它看起来应该能够找到它

我的清单定义为：

05-31 10:14:24.060 E/AndroidRuntime( 1583):java.lang.RuntimeException: Unable to instantiate receiver MyNameSpace.MyClass.MyBootReceiver: java.lang.ClassNotFoundException: Didn't find class "MyNameSpace.MyClass.MyBootReceiver" on path: /data/app/MyNameSpace.MyClass-1.apk
05-31 10:14:24.060 E/AndroidRuntime( 1583): Caused by: java.lang.ClassNotFoundException: Didn't find class "MyNameSpace.MyClass.MyBootReceiver" on path: /data/app/MyNameSpace.MyClass-1.apk

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
          android:versionCode="1" 
          android:versionName="1.0" 
          package="MyNamespace.MyClass">
    <uses-sdk />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>

  <application>
    <receiver android:name=".MyBootReceiver">
      <intent-filter>
        <action android:name="android.intent.action.BOOT_COMPLETED" />
      </intent-filter>
    </receiver>
    <activity android:name=".MyActivity"></activity>

  </application>    
</manifest>

namespace MyNamespace
{
    [Service]
    [IntentFilter(new String[] { "com.xamarin.MyClass" })]
    public class MyClass : IntentService
    {
        private IBinder binder;

        public const string MyUpdatedAction = "MyUpdated";

        protected override void OnHandleIntent(Intent intent)
        {
            var myIntent = new Intent(MyUpdatedAction);

            SendOrderedBroadcast(myIntent, null);
        }

        public override IBinder OnBind(Intent intent)
        {
            binder = new MyServiceBinder(this);
            return binder;
        }

        [BroadcastReceiver]
        [IntentFilter(new string[] { MyUpdatedAction }, Priority = (int)IntentFilterPriority.LowPriority)]
        public class MyBootReceiver : BroadcastReceiver
        {
            public override void OnReceive(Context context, Android.Content.Intent intent)
            {
                Log.Info("MyTrace", "MyReceiver OnReceive action: " + intent.Action);

                if (intent.Action.Contains("BOOT_COMPLETED"))
                {
                    var pushIntent = new Intent(MyUpdatedAction);
                    context.StartService(pushIntent);

                }
            }
        }
    }
}

---

我需要做什么才能让它工作？

在描述清单文件中的项目时，我通常会添加整个类路径。所以在你的情况下，我会写：

<application>
    <receiver android:name="MyNamespace.MyBootReceiver">
      <intent-filter>
        <action android:name="android.intent.action.BOOT_COMPLETED" />
      </intent-filter>
    </receiver>
<activity android:name="MyNamespace.MyActivity"></activity>

---

我也面临同样的问题，并找到了解决办法。按照以下步骤使“内部”广播接收器工作而不发生任何故障：

1） 使您的主要活动如下所示：

public class MainActivity extends AppCompatActivity
    implements SomeListener {
        MyReceiver myRecvr;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
           super.onCreate(savedInstanceState);
           myRecvr = new MyReceiver();  
           .......
        }

    ...onResume() code ... onPause() code ... yourBroadcastReceiver Class{} ...


}

public static class MyReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        Bundle extras = intent.getExtras();
        if (extras != null) {
            if(extras.containsKey("value")){
                Log.e("BroadcastedValue",extras.get("value").toString());
            }
        }
    }
}

<receiver android:name="com.example.yourproject.YourMainActivityName$MyReceiver" android:enabled="true">
        <intent-filter>
            <action android:name="MyBroadcast" >
            </action>
        </intent-filter>
    </receiver>

2） 在onResume（）中注册接收者，并在onPause（）中注销接收者，如下所示：

@Override
public void onResume() {
    Log.e("DEBUG", "onResume()");
    final IntentFilter filter = new IntentFilter();
    filter.addAction("MyBroadcast");

    registerReceiver(myRecvr, filter);
    super.onResume();
}

@Override
public void onPause() {
    Log.e("DEBUG", "OnPause()");
    unregisterReceiver(myRecvr);
    super.onPause();
}

3） 现在，将内部BroadcastReceiver添加到onPause（）的正下方或mainActivity类结束之前，如下所示：

public class MainActivity extends AppCompatActivity
    implements SomeListener {
        MyReceiver myRecvr;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
           super.onCreate(savedInstanceState);
           myRecvr = new MyReceiver();  
           .......
        }

    ...onResume() code ... onPause() code ... yourBroadcastReceiver Class{} ...


}

public static class MyReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        Bundle extras = intent.getExtras();
        if (extras != null) {
            if(extras.containsKey("value")){
                Log.e("BroadcastedValue",extras.get("value").toString());
            }
        }
    }
}

<receiver android:name="com.example.yourproject.YourMainActivityName$MyReceiver" android:enabled="true">
        <intent-filter>
            <action android:name="MyBroadcast" >
            </action>
        </intent-filter>
    </receiver>

4） 最后，确保已将内部BroadcastReceiver路径添加到清单中，如下所示：

public class MainActivity extends AppCompatActivity
    implements SomeListener {
        MyReceiver myRecvr;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
           super.onCreate(savedInstanceState);
           myRecvr = new MyReceiver();  
           .......
        }

    ...onResume() code ... onPause() code ... yourBroadcastReceiver Class{} ...


}

public static class MyReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        Bundle extras = intent.getExtras();
        if (extras != null) {
            if(extras.containsKey("value")){
                Log.e("BroadcastedValue",extras.get("value").toString());
            }
        }
    }
}

<receiver android:name="com.example.yourproject.YourMainActivityName$MyReceiver" android:enabled="true">
        <intent-filter>
            <action android:name="MyBroadcast" >
            </action>
        </intent-filter>
    </receiver>


谢谢-应该是
MyNameSpace.MyClass.MyBootReceiver
而不是
MyNameSpace.MyBootReceiver
？…刚刚尝试。。在名称空间前面加前缀没有帮助。事实上，它使事情变得更复杂，例如，
无法实例化receiver MyNameSpace.MyClass.MyNameSpace.MyClass.MyBootReceiver
@DaveDev，我怀疑您的名称声明中有句点作为第一个字符。我有-如果没有句点，我会得到一个部署错误：
部署失败，因为内部错误：意外的安装输出：pkg:/data/local/tmp/MyNamespace.MyClass-Signed.apk失败[install\u PARSE\u failed\u MANIFEST\u畸形]