public override void HandleMessage(Message msg)
        {
            switch (msg.What)
            {
            // write
            case 3:
                var writeBuffer  = (byte[])msg.Obj;
                var writeMessage = Encoding.ASCII.GetString(writeBuffer);
                //activity.Adapter.Add ($"Me:  {writeMessage}");

                break;

            // read
            case 2:
                //Logger.Log ("HANDLE MESSAGE CASE 2");
                var readBuffer  = (byte[])msg.Obj;
                var readMessage = Encoding.ASCII.GetString(readBuffer);
                activity.EtoUngMessage(readMessage);

                //activity.Adapter.Add ($"{activity.connectedDeviceName}: {readMessage}");
                break;
            }
        }