com.gdglab.iot.gcm.GcmIntentService.java Source code

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Here is the source code for com.gdglab.iot.gcm.GcmIntentService.java

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/*
 * Copyright (C) 2013 The Android Open Source Project
 *
 * 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.gdglab.iot.gcm;

import org.json.JSONException;
import org.json.JSONObject;

import android.app.IntentService;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.NotificationCompat;
import android.support.v4.app.TaskStackBuilder;
import android.util.Log;

import com.gdglab.iot.GdglabActivity;
import com.gdglab.iot.R;
import com.google.android.gms.gcm.GoogleCloudMessaging;

/**
 * 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 static final int NOTIFICATION_ID = 1;
    private NotificationManager mNotificationManager;
    NotificationCompat.Builder builder;

    public GcmIntentService() {
        super("GcmIntentService");
    }

    public static final String TAG = "GCM_GDG";

    @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)) {
                sendNotification("Send error: " + extras.toString());
            } else if (GoogleCloudMessaging.MESSAGE_TYPE_DELETED.equals(messageType)) {
                sendNotification("Deleted messages on server: " + extras.toString());
                // If it's a regular GCM message, do some work.
            } else if (GoogleCloudMessaging.MESSAGE_TYPE_MESSAGE.equals(messageType)) {
                // This loop represents the service doing some work.
                //                for (int i = 0; i < 5; i++) {
                //                    Log.i(TAG, "Working... " + (i + 1)
                //                            + "/5 @ " + SystemClock.elapsedRealtime());
                //                    try {
                //                        Thread.sleep(5000);
                //                    } catch (InterruptedException e) {
                //                    }
                //                }
                //                Log.i(TAG, "Completed work @ " + SystemClock.elapsedRealtime());

                // Post notification of received message.
                Log.i(TAG, "Received: " + extras.toString());

                String text = (String) extras.get("message");
                JSONObject json = null;
                String msgText = "";
                try {
                    json = new JSONObject(text);
                    msgText = json.getString("text");
                    Log.i(TAG, "received text : " + msgText);
                    sendNotification(msgText);

                } catch (JSONException e) {
                    Log.e(TAG, "Error with JSON message");
                    e.printStackTrace();
                }
            }
        }
        // Release the wake lock provided by the WakefulBroadcastReceiver.
        GcmBroadcastReceiver.completeWakefulIntent(intent);
    }

    // Put the message into a notification and post it.
    // This is just one simple example of what you might choose to do with
    // a GCM message.
    private void sendNotification(String msg) {
        mNotificationManager = (NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE);

        // Creates an explicit intent for an Activity in your app
        Intent resultIntent = new Intent(this, GdglabActivity.class);

        resultIntent.putExtra("msgText", msg);

        // The stack builder object will contain an artificial back stack for the
        // started Activity.
        // This ensures that navigating backward from the Activity leads out of
        // your application to the Home screen.
        TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
        //Adds the back stack for the Intent (but not the Intent itself)
        stackBuilder.addParentStack(GdglabActivity.class);
        // Adds the Intent that starts the Activity to the top of the stack
        stackBuilder.addNextIntent(resultIntent);
        PendingIntent resultPendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);

        NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this)
                .setSmallIcon(R.drawable.ic_stat_gcm).setContentTitle("GCM Notification")
                .setStyle(new NotificationCompat.BigTextStyle().bigText(msg)).setContentText(msg);
        mBuilder.setContentIntent(resultPendingIntent);

        Notification note = mBuilder.build();

        note.flags |= Notification.FLAG_AUTO_CANCEL;

        mNotificationManager.notify(NOTIFICATION_ID, note);
    }
}