Question

在向我的应用发送意图时，我收到“无法实例化接收器”错误。似乎Eclipse无论如何都看不到我的ExIntentReceiver类。我不知道为什么会这样; ExIntentReceiver位于同一个包中（com.example.app）。

ExIntentReceiver.java：

package com.example.app

public class ExIntentReceiver extends BroadcastReceiver {

 @Override
   public void onReceive(Context context, Intent intent) {
      String action = intent.getAction();
  if(action.equals("com.example.app.START_SERVICE"))    {
        Log.v("service", "is started");
      } else if(action.equals("com.example.app.STOP_SERVICE"))  {
          Log.v("service", "is stopped");
      }

   }
}

清单：

 <receiver android:name=".ExIntentReceiver" android:exported="true">  
      <intent-filter>
     <action android:name="com.example.app.START_SERVICE" />
       <action android:name="com.example.app.STOP_SERVICE" />
     </intent-filter>
  </receiver>

logcat的：

04-22 10:37:13.361: E/AndroidRuntime(11213): FATAL EXCEPTION: main
04-22 10:37:13.361: E/AndroidRuntime(11213): java.lang.RuntimeException: Unable to instantiate receiver com.example.app.ExIntentReceiver: java.lang.ClassNotFoundException: com.example.app.ExIntentReceiver
04-22 10:37:13.361: E/AndroidRuntime(11213):    at android.app.ActivityThread.handleReceiver(ActivityThread.java:2261)
04-22 10:37:13.361: E/AndroidRuntime(11213):    at android.app.ActivityThread.access$1600(ActivityThread.java:140)
04-22 10:37:13.361: E/AndroidRuntime(11213):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1313)
04-22 10:37:13.361: E/AndroidRuntime(11213):    at android.os.Handler.dispatchMessage(Handler.java:99)
04-22 10:37:13.361: E/AndroidRuntime(11213):    at android.os.Looper.loop(Looper.java:137)
04-22 10:37:13.361: E/AndroidRuntime(11213):    at android.app.ActivityThread.main(ActivityThread.java:4921)
04-22 10:37:13.361: E/AndroidRuntime(11213):    at java.lang.reflect.Method.invokeNative(Native Method)
04-22 10:37:13.361: E/AndroidRuntime(11213):    at java.lang.reflect.Method.invoke(Method.java:511)
04-22 10:37:13.361: E/AndroidRuntime(11213):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1027)
04-22 10:37:13.361: E/AndroidRuntime(11213):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)
04-22 10:37:13.361: E/AndroidRuntime(11213):    at dalvik.system.NativeStart.main(Native Method)
04-22 10:37:13.361: E/AndroidRuntime(11213): Caused by: java.lang.ClassNotFoundException: com.example.app.ExIntentReceiver
04-22 10:37:13.361: E/AndroidRuntime(11213):    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
04-22 10:37:13.361: E/AndroidRuntime(11213):    at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
04-22 10:37:13.361: E/AndroidRuntime(11213):    at java.lang.ClassLoader.loadClass(ClassLoader.java:461)

Answer 1

您应该在自己的意图过滤器中声明操作。

<receiver android:name=".ExtIntentReceiver " android:exported="true">
    <intent-filter>
        <action android:name="com.example.app.START_SERVICE" />
    </intent-filter>
    <intent-filter>
        <action android:name="com.example.app.STOP_SERVICE" />
    </intent-filter>
</receiver>

除此之外，请确保在清单中为Receiver提供正确的包名称。并确保你应该拼写正确。

Answer 2

如果你想将BroadcastReceiver作为内部类而你想在不使用它的情况下使用它，你应该像这样使用STATIC

public static class MyBroadcastReceiver extends BroadcastReceiver
{
    @Override
    public void onReceive(Context context, Intent intent)
    {
        //do what you want
    }
}

无法实例化接收器

2 个答案: