我正在尝试学习如何使用谷歌云消息系统设置客户端接收器,我正在按照谷歌的教程：
http://developer.android.com/guide/google/gcm/gs.html#android-app
我已经完成了教程要求的所有内容,但是当我运行我的应用程序时,它工作了一会儿然后它崩溃了,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
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,"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,notificationIntent,0);
notification.setLatestEventInfo(context,title,intent);
notification.flags |= Notification.FLAG_AUTO_CANCEL;
notificationManager.notify(0,notification);
}
}
