void HandleTimerCallback(object state)
        {
            var preferences     = PreferenceManager.GetDefaultSharedPreferences(this);
            var streamerNames   = preferences.GetString("streamer_names", "").Split(new[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
            var streamersOnline = Twitch.StreamersOnline(streamerNames, configuration);

            foreach (var entry in streamersOnline)
            {
                if (!entry.Value)
                {
                    continue;
                }

                Bundle valuesForActivity = new Bundle();
                Intent resultIntent      = new Intent(this, typeof(MainActivity));
                resultIntent.PutExtras(valuesForActivity);

                TaskStackBuilder stackBuilder = TaskStackBuilder.Create(this);
                stackBuilder.AddParentStack(Java.Lang.Class.FromType(typeof(MainActivity)));
                stackBuilder.AddNextIntent(resultIntent);

                PendingIntent resultPendingIntent = stackBuilder.GetPendingIntent(0, (int)PendingIntentFlags.UpdateCurrent);

                NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
                                                     .SetAutoCancel(true)
                                                     .SetContentIntent(resultPendingIntent)
                                                     .SetContentTitle("Streamer online")
                                                     .SetSmallIcon(Resource.Drawable.Icon)
                                                     .SetContentText(entry.Key + " is streaming now");

                NotificationManager notificationManager = (NotificationManager)GetSystemService(NotificationService);
                notificationManager.Notify(ButtonClickNotificationId, builder.Build());
            }
        }