Java tutorial
/** * Copyright 2015 Google Inc. All Rights Reserved. * * 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.entropy.promoenginedemoapp.gcm; import java.util.HashMap; import java.util.List; import android.app.ActivityManager; import android.app.ActivityManager.RunningTaskInfo; import android.app.AlertDialog; import android.app.NotificationManager; import android.app.PendingIntent; import android.content.ComponentName; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.media.RingtoneManager; import android.net.Uri; import android.os.Bundle; import android.os.Handler; import android.os.Looper; import android.os.Message; import android.support.v4.app.NotificationCompat; import android.util.Log; import com.entropy.promoenginedemoapp.R; import com.entropy.promoenginedemoapp.SecondActivity; import com.google.android.gms.gcm.GcmListenerService; public class MyGcmListenerService extends GcmListenerService { private static final String TAG = "HypeSDK"; /** * Called when message is received. * * @param from SenderID of the sender. * @param data Data bundle containing message data as key/value pairs. * For Set of keys use data.keySet(). */ // [START receive_message] @Override public void onMessageReceived(String from, final Bundle data) { final String message = data.getString("message"); // Log.d(TAG, "From: " + from); // Log.d(TAG, "Message: " + message); // Log.d(TAG, data.toString()); Handler mHandler = new Handler(getMainLooper()); mHandler.post(new Runnable() { @Override public void run() { SecondActivity act = new SecondActivity(); act.redemtionForPromo(data); } }); if (from.startsWith("/topics/")) { // message received from some topic. } else { // normal downstream message. } // [START_EXCLUDE] /** * Production applications would usually process the message here. * Eg: - Syncing with server. * - Store message in local database. * - Update UI. */ /** * In some cases it may be useful to show a notification indicating to the user * that a message was received. */ if (isApplicationSentToBackground(getApplicationContext())) { sendNotification(message); } else { postMessage(message); } // [END_EXCLUDE] } // [END receive_message] /** * Create and show a simple notification containing the received GCM message. * * @param message GCM message received. */ private final Handler handler = new Handler(Looper.getMainLooper()); public void postMessage(final String message) { handler.post(new Runnable() { @Override public void run() { SecondActivity.showAlertDialog(message); } }); } private void sendNotification(String message) { Intent intent = new Intent(this, SecondActivity.class); intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent, PendingIntent.FLAG_ONE_SHOT); Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this) .setSmallIcon(R.drawable.logo).setContentTitle("Hype Demo").setContentText(message) .setAutoCancel(true).setSound(defaultSoundUri).setContentIntent(pendingIntent); NotificationManager notificationManager = (NotificationManager) getSystemService( Context.NOTIFICATION_SERVICE); notificationManager.notify((int) System.currentTimeMillis() /* ID of notification */, notificationBuilder.build()); } private boolean isApplicationSentToBackground(final Context context) { ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE); List<RunningTaskInfo> tasks = am.getRunningTasks(1); if (!tasks.isEmpty()) { ComponentName topActivity = tasks.get(0).topActivity; if (!topActivity.getPackageName().equals(context.getPackageName())) { return true; } } return false; } }