6

我正在尝试学习如何使用谷歌云消息传递系统设置客户端接收器，我正在关注这个谷歌的教程：http: //developer.android.com/guide/google/gcm/gs.html#android-app

我已经完成了教程要求的所有事情，但是当我运行我的应用程序时，它会工作一会儿然后崩溃，这就是 LogCat：

08-07 17:04:40.726: E/AndroidRuntime(8155): FATAL EXCEPTION: main
08-07 17:04:40.726: E/AndroidRuntime(8155): java.lang.RuntimeException: Unable to instantiate service com.example.google.cloud.messaging.GCMIntentService: java.lang.ClassNotFoundException: com.example.google.cloud.messaging.GCMIntentService in loader dalvik.system.PathClassLoader[/data/app/com.example.google.cloud.messaging-1.apk]
08-07 17:04:40.726: E/AndroidRuntime(8155):     at android.app.ActivityThread.handleCreateService(ActivityThread.java:1933)
08-07 17:04:40.726: E/AndroidRuntime(8155):     at android.app.ActivityThread.access$2500(ActivityThread.java:117)
08-07 17:04:40.726: E/AndroidRuntime(8155):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:989)
08-07 17:04:40.726: E/AndroidRuntime(8155):     at android.os.Handler.dispatchMessage(Handler.java:99)
08-07 17:04:40.726: E/AndroidRuntime(8155):     at android.os.Looper.loop(Looper.java:130)
08-07 17:04:40.726: E/AndroidRuntime(8155):     at android.app.ActivityThread.main(ActivityThread.java:3687)
08-07 17:04:40.726: E/AndroidRuntime(8155):     at java.lang.reflect.Method.invokeNative(Native Method)
08-07 17:04:40.726: E/AndroidRuntime(8155):     at java.lang.reflect.Method.invoke(Method.java:507)
08-07 17:04:40.726: E/AndroidRuntime(8155):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842)
08-07 17:04:40.726: E/AndroidRuntime(8155):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
08-07 17:04:40.726: E/AndroidRuntime(8155):     at dalvik.system.NativeStart.main(Native Method)
08-07 17:04:40.726: E/AndroidRuntime(8155): Caused by: java.lang.ClassNotFoundException: com.example.google.cloud.messaging.GCMIntentService in loader dalvik.system.PathClassLoader[/data/app/com.example.google.cloud.messaging-1.apk]
08-07 17:04:40.726: E/AndroidRuntime(8155):     at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
08-07 17:04:40.726: E/AndroidRuntime(8155):     at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
08-07 17:04:40.726: E/AndroidRuntime(8155):     at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
08-07 17:04:40.726: E/AndroidRuntime(8155):     at android.app.ActivityThread.handleCreateService(ActivityThread.java:1930)

这是我的代码 

public class MainActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        GCMRegistrar.checkDevice(this);
        GCMRegistrar.checkManifest(this);
        final String regId = GCMRegistrar.getRegistrationId(this);
        if (regId.equals("")) {
          GCMRegistrar.register(this, "962129210868");
          Log.i("Registrando","");
        } else {
          Log.i("Test", "Already registered");
        }
    }
}

这是我的清单

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.google.cloud.messaging"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="16" />

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.GET_ACCOUNTS" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />

    <permission
        android:name="com.example.google.cloud.messaging.permission.C2D_MESSAGE"
        android:protectionLevel="signature" />

    <uses-permission android:name="com.example.google.cloud.messaging.permission.C2D_MESSAGE" />
    <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >

        <activity
            android:name=".MainActivity"
            android:label="@string/title_activity_main" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <receiver
            android:name="com.google.android.gcm.GCMBroadcastReceiver"
            android:permission="com.google.android.c2dm.permission.SEND" >
            <intent-filter>
                <action android:name="com.google.android.c2dm.intent.RECEIVE" />
                <action android:name="com.google.android.c2dm.intent.REGISTRATION" />

                <category android:name="com.example.google.cloud.messaging" />
            </intent-filter>
        </receiver>

        <service android:name="com.example.google.cloud.messaging.GCMIntentService"  android:enabled="true"/>
    </application>

</manifest>

固定的

我创建了一个名为 GCMIntentService 的新类：

public class GCMIntentService extends GCMBaseIntentService {

    @SuppressWarnings("hiding")
    private static final String TAG = "GCMIntentService";

    public GCMIntentService() {
        super("Test");
    }

    @Override
    protected void onRegistered(Context context, String registrationId) {
        Log.i(TAG, "Device registered: regId = " + registrationId);
    }

    @Override
    protected void onUnregistered(Context context, String registrationId) {
        Log.i(TAG, "Device unregistered");
    }

    @Override
    protected void onMessage(Context arg0, Intent arg1) {
      Log.d("GCM", "RECIEVED A MESSAGE");
      generateNotification(arg0, arg1.getStringExtra("message"));
       }

    @Override
    protected void onDeletedMessages(Context context, int total) {
        Log.i(TAG, "Received deleted messages notification");
    }

    @Override
    public void onError(Context context, String errorId) {
        Log.i(TAG, "Received error: " + errorId);
    }

    @Override
    protected boolean onRecoverableError(Context context, String errorId) {
        // log message
        Log.i(TAG, "Received recoverable error: " + errorId);
        return super.onRecoverableError(context, errorId);
    }

    /**
     * Issues a notification to inform the user that server has sent a message.
     */
    private static void generateNotification(Context context, String message) {
        int icon = R.drawable.ic_action_search;
        long when = System.currentTimeMillis();
        NotificationManager notificationManager = (NotificationManager)
                context.getSystemService(Context.NOTIFICATION_SERVICE);
        Notification notification = new Notification(icon, message, when);
        String title = context.getString(R.string.app_name);
        Intent notificationIntent = new Intent(context, GCMIntentService.class);
        // set intent so it does not start a new activity
        notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP |
                Intent.FLAG_ACTIVITY_SINGLE_TOP);
        PendingIntent intent =
                PendingIntent.getActivity(context, 0, notificationIntent, 0);
        notification.setLatestEventInfo(context, title, message, intent);
        notification.flags |= Notification.FLAG_AUTO_CANCEL;
        notificationManager.notify(0, notification);
    }

}
4

2 回答 2

10

您应该GCMIntentService在客户端代码中有，并且应该在 AndroidManifest.xml 文件中定义它，如下所示。

<service android:name="package_name.GCMIntentService" />

请注意，意图服务的名称应该与GCMIntentService您使用GCMBroadcastReceiver. 如果您实现广播接收器，则可以创建您的意图服务。

于 2012-08-08T09:41:52.240 回答
4

我有同样的问题。这个问题得到了解决，因为您使用 GCMIntentService 类名作为 android 所需的名称。但是如果你想重命名这个类或者把这个类放到另一个包中，问题就会回来:) 这里是解决方案链接和源代码。

解决方案 ：

我们应该创建接收器并将我们的自定义服务的名称设置为覆盖的方法 getGCMIntentServiceClassName。

public class GCMReceiver extends GCMBroadcastReceiver { 
@Override
protected String getGCMIntentServiceClassName(Context context) { 
    return "PCAKAGE_NAME.GCMService"; 
}
}

如果 GCMIntentService 在另一个包中，PCKAGE_NAME 是另一个包名。

并且不要忘记在 AndroidManifest.xml 中更改接收器名称。

于 2012-08-26T11:24:10.347 回答