Java tutorial
package org.dodgybits.shuffle.android.server.gcm; /* * Copyright 2012 Google Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import android.app.IntentService; import android.app.NotificationManager; import android.content.Intent; import android.os.Bundle; import android.support.v4.content.WakefulBroadcastReceiver; import android.util.Log; import com.google.android.gms.gcm.GoogleCloudMessaging; import org.dodgybits.shuffle.android.server.sync.SyncSchedulingService; import static org.dodgybits.shuffle.android.server.sync.SyncSchedulingService.GCM_SOURCE; import static org.dodgybits.shuffle.android.server.sync.SyncSchedulingService.SOURCE_EXTRA; /** * This {@code IntentService} does the actual handling of the GCM message. * {@code GcmBroadcastReceiver} (a {@code WakefulBroadcastReceiver}) holds a * partial wake lock for this service while the service does its work. When the * service is finished, it calls {@code completeWakefulIntent()} to release the * wake lock. */ public class GcmIntentService extends IntentService { public GcmIntentService() { super("GcmIntentService"); } public static final String TAG = "GcmIntentService"; @Override protected void onHandleIntent(Intent intent) { Bundle extras = intent.getExtras(); GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(this); // The getMessageType() intent parameter must be the intent you received // in your BroadcastReceiver. String messageType = gcm.getMessageType(intent); if (!extras.isEmpty()) { // has effect of unparcelling Bundle /* * Filter messages based on message type. Since it is likely that GCM will be * extended in the future with new message types, just ignore any message types you're * not interested in, or that you don't recognize. */ if (GoogleCloudMessaging.MESSAGE_TYPE_SEND_ERROR.equals(messageType)) { Log.e(TAG, "Send error: " + extras.toString()); } else if (GoogleCloudMessaging.MESSAGE_TYPE_DELETED.equals(messageType)) { Log.d(TAG, "Deleted messages on server: " + extras.toString()); // If it's a regular GCM message, do some work. } else if (GoogleCloudMessaging.MESSAGE_TYPE_MESSAGE.equals(messageType)) { Log.i(TAG, "Received message" + extras.toString()); Intent syncIntent = new Intent(this, SyncSchedulingService.class); syncIntent.putExtra(SOURCE_EXTRA, GCM_SOURCE); WakefulBroadcastReceiver.startWakefulService(this, syncIntent); } } // Release the wake lock provided by the WakefulBroadcastReceiver. GcmBroadcastReceiver.completeWakefulIntent(intent); } }