GCMIntentService.java

/*
 * 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.
 */
package com.emobc.android.activities;


import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.util.Log;

import com.emobc.android.ApplicationData;
import com.emobc.android.levels.impl.ServerPushDataItem;
import com.emobc.android.utils.CommonUtilities;
import com.emobc.android.utils.InvalidFileException;
import com.emobc.android.utils.ServerUtilities;
import com.google.android.gcm.GCMBaseIntentService;
import com.google.android.gcm.GCMRegistrar;

/**
 * IntentService responsible for handling GCM messages.
 */
public class GCMIntentService extends GCMBaseIntentService {

    private static final String TAG = "GCMIntentService";
	private String[] mSenderIds;
	private ApplicationData data;

    public GCMIntentService() {
        super();
        
    }
    /**
     * Gets the sender ids.
     *
     * <p>By default, it returns the sender ids passed in the constructor, but
     * it could be overridden to provide a dynamic sender id.
     *
     * @throws IllegalStateException if sender id was not set on constructor.
     *
     **/
    @Override
    protected String[] getSenderIds(Context context) {
    	return mSenderIds;
    }
    
    protected void updateData(){
    	
    	try {
			data = ApplicationData.readApplicationData(this);
			if(data != null){
				ServerPushDataItem serverPush = data.getServerPush();
				if(serverPush != null){
					if(mSenderIds == null)
						mSenderIds = new String[1];
					
					mSenderIds[0] = serverPush.getSenderId();
				}
				
			}
		} catch (InvalidFileException e) {
			e.printStackTrace();
		}
    }


    @Override
    protected void onRegistered(Context context, String registrationId) {
        Log.i(TAG, "Device registered: regId = " + registrationId);
        updateData();
        String appId = null;
        if(data != null && data.getServerPush() != null)
        	appId = data.getServerPush().getAppName();
        ServerUtilities.register(context, 
        		registrationId, 
        		appId,
        		data.getServerPush().getServerUrl());
    }

    @Override
    protected void onUnregistered(Context context, String registrationId) {
        Log.i(TAG, "Device unregistered");
        if (GCMRegistrar.isRegisteredOnServer(context)) {
        	updateData();
            String appId = null;
            if(data != null && data.getServerPush() != null)
            	appId = data.getServerPush().getAppName();
            ServerUtilities.unregister(context, 
            		registrationId,
            		appId,
            		data.getServerPush().getServerUrl());
        } else {
            // This callback results from the call to unregister made on
            // ServerUtilities when the registration to the server failed.
            Log.i(TAG, "Ignoring unregister callback");
        }
    }

    @Override
    protected void onMessage(Context context, Intent intent) {
        Log.i(TAG, "Received message");
        String message = intent.getExtras().getString(CommonUtilities.EXTRA_MESSAGE);
        // notifies user
        generateNotification(context, message);
    }

    @Override
    protected void onDeletedMessages(Context context, int total) {
        Log.i(TAG, "Received deleted messages notification");
        String message = getString(R.string.gcm_deleted, total);
        // notifies user
        generateNotification(context, message);
    }

    @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_stat_gcm;
        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, SplashActivity.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);
    }

}