void OnGeofenceManagerFailedToStart(object sender, ConnectionResultEventArgs e)
 {
     _isProcessing = false;
 }
        void OnGeofenceManagerFailedToStartWithResolution(object sender, ConnectionResultEventArgs e)
        {
            _isProcessing = false;

            try
            {
                e.ConnectionResult.StartResolutionForResult(this, GeofenceManager.ConnectionFailedRequestCode);
            }
            catch (Android.Content.IntentSender.SendIntentException ex)
            {
                Log.Debug(TAG, ex.Message);

                ShowToast(Resource.String.failed_to_connect);
            }
        }