Java.lang.RuntimeException: Unable to create .GCMIntentService service

Question

I am trying to learn how to install a client receiver using Google's cloud messaging system and I am following this google guide: http://developer.android.com/guide/google/gcm/gs.html#android-app

I did everything that the tutorial sets, but when I run my application, it works for a moment, and then it crashes, and this is 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) 

This is my code.

 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"); } } } 

And this is my manifest

 <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> 

Fixed

I created a new class called GCMIntentService:

 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); } } 

Answer 1

The client code must have a GCMIntentService , and you must define it in the AndroidManifest.xml file as follows.

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

Note that the intent service name must be exactly the same as the GCMIntentService if you are using the GCMBroadcastReceiver . You can create your intent service if you are implementing your broadcast receiver.

Answer 2

I had the same problem. And this problem has been resolved because you use the class name GCMIntentService as an android. But if you want to rename or put this class in another package, problems come back :) Here is the link link and source code .

Decision:

We must create a receiver and set the name of our custom service to override the getGCMIntentServiceClassName method.

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

Where PCKAGE_NAME is a different package name in case GCMIntentService is in another package.

And don't forget the name of the change recipient in AndroidManifest.xml too.