Java tutorial
package org.starfishrespect.myconsumption.android; import android.app.IntentService; 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 org.starfishrespect.myconsumption.android.notifications.GCMBroadcastReceiver; import org.starfishrespect.myconsumption.android.ui.LoginActivity; import com.google.android.gms.gcm.GoogleCloudMessaging; import static org.starfishrespect.myconsumption.android.util.LogUtils.LOGE; import static org.starfishrespect.myconsumption.android.util.LogUtils.LOGI; import static org.starfishrespect.myconsumption.android.util.LogUtils.makeLogTag; /** * Service that manages push notifications * S23Y (2015). Licensed under the Apache License, Version 2.0. * Author: Thibaud Ledent */ public class GCMIntentService extends IntentService { private static final String TAG = makeLogTag(GCMIntentService.class); private NotificationManager mNotificationManager; public GCMIntentService() { super("GCMIntentService"); LOGI(TAG, "GCMIntentService started"); } @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 == null || extras.isEmpty() || messageType == null || messageType.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. */ switch (messageType) { case GoogleCloudMessaging.MESSAGE_TYPE_SEND_ERROR: LOGI(TAG, "Send error: " + extras.toString()); break; case GoogleCloudMessaging.MESSAGE_TYPE_DELETED: LOGI(TAG, "Deleted messages on server: " + extras.toString()); break; case GoogleCloudMessaging.MESSAGE_TYPE_MESSAGE: // If it's a regular GCM message try { // Post notification of received message. sendNotification(extras.get("sensor").toString(), extras.get("message").toString()); LOGI(TAG, "Received: " + extras.toString()); } catch (Exception e) { LOGE(TAG, "Error while sending notification: " + e.toString()); } break; } } // 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 sensor, String msg) { mNotificationManager = (NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE); PendingIntent contentIntent = PendingIntent.getActivity(this, 0, new Intent(this, LoginActivity.class), 0); NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this) .setSmallIcon(R.drawable.icon_notification) .setContentTitle(getResources().getString(R.string.app_name)) .setStyle(new NotificationCompat.BigTextStyle().bigText(msg)).setContentText(msg); mBuilder.setContentIntent(contentIntent); mNotificationManager.notify(sensor.hashCode(), mBuilder.build()); } }