Java tutorial
/* * 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 nl.johndekroon.dma; import static nl.johndekroon.dma.CommonUtilities.SENDER_ID; import static nl.johndekroon.dma.CommonUtilities.displayMessage; import org.json.JSONException; import org.json.JSONObject; import android.app.Notification; import android.app.NotificationManager; import android.app.PendingIntent; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.media.Ringtone; import android.media.RingtoneManager; import android.net.Uri; import android.os.Vibrator; import android.preference.PreferenceManager; import android.util.Log; import com.google.android.gcm.GCMBaseIntentService; import com.google.android.gcm.GCMRegistrar; import nl.johndekroon.dma.R; import nl.johndekroon.dma.MainActivity; /** * IntentService responsible for handling GCM messages. */ public class GCMIntentService extends GCMBaseIntentService { private SharedPreferences prefs; private static final String TAG = "GCMIntentService"; public GCMIntentService() { super(SENDER_ID); } @Override protected void onRegistered(Context context, String registrationId) { prefs = PreferenceManager.getDefaultSharedPreferences(getBaseContext()); Log.i(TAG, "Device registered: regId = " + registrationId); displayMessage(context, getString(R.string.gcm_registered)); ServerUtilities.register(context, registrationId, prefs.getString("user", ""), prefs.getString("pass", "")); } @Override protected void onUnregistered(Context context, String registrationId) { Log.i(TAG, "Device unregistered"); displayMessage(context, getString(R.string.gcm_unregistered)); if (GCMRegistrar.isRegisteredOnServer(context)) { ServerUtilities.unregister(context, registrationId); } 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"); } } /* * what to do on receiving the message. */ @Override protected void onMessage(Context context, Intent intent) { prefs = PreferenceManager.getDefaultSharedPreferences(getBaseContext()); prefs.getBoolean("muteAll", false); String data = intent.getStringExtra("message"); JSONObject datajson; try { datajson = new JSONObject(data); String message = datajson.get("message").toString(); String type = datajson.get("type").toString(); String monitor = datajson.get("monitor").toString(); DatabaseDAO datasource = new DatabaseDAO(this); datasource.open(); //On getting a warning or an OK if (type.equals("WARNING") || type.equals("OK")) { if (prefs.getBoolean("muteAll", false) != true) { Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE); long[] pattern = { 0, 500, 200, 200 }; // Only perform this pattern one time (-1 means "do not repeat") v.vibrate(pattern, -1); Uri alert = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); if (alert == null) { // I can't see this ever being null (as always have a default notification) but just incase // alert backup is null, using 2nd backup alert = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM); } Ringtone r = RingtoneManager.getRingtone(getApplicationContext(), alert); r.play(); } datasource.updateScenario(monitor, type); generateNotification(context, message); } //on receiving an error else if (type.equals("ERROR")) { System.out.println("bbbrrrrrrr brrrrrr"); Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE); long[] pattern = { 0, 1000, 50, 200, 50, 200, 50, 1200 }; // Only perform this pattern one time (-1 means "do not repeat") v.vibrate(pattern, -1); if (prefs.getBoolean("muteAll", false) != true) { Uri alert = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); if (alert == null) { alert = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM); } Ringtone r = RingtoneManager.getRingtone(getApplicationContext(), alert); r.play(); } datasource.updateScenario(monitor, type); generateNotification(context, message); } //on register, make a new scenario. else if (type.equals("REGISTER")) { datasource.createScenario(monitor); } System.out.println(intent.getStringExtra("message")); Log.i(TAG, "Received message"); //No idea why this part isn't working. It should. // if(type.equals("ERROR")) // { // displayMessage(context, message, "error"); // } // else // { displayMessage(context, message); // } } catch (JSONException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } } @Override protected void onDeletedMessages(Context context, int total) { Log.i(TAG, "Received deleted messages notification"); String message = getString(R.string.gcm_deleted, total); displayMessage(context, message); // notifies user generateNotification(context, message); } @Override public void onError(Context context, String errorId) { Log.i(TAG, "Received error: " + errorId); displayMessage(context, getString(R.string.gcm_error, errorId)); } @Override protected boolean onRecoverableError(Context context, String errorId) { // log message Log.i(TAG, "Received recoverable error: " + errorId); displayMessage(context, getString(R.string.gcm_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, MainActivity.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); } }