Code Snippet for a Bluetooth mobile printing service

Bluetooth Printer on Xamarin.Android

  
  private BluetoothAdapter mBluetoothAdapter = null;
        private BluetoothDevice mmDevice = null;
        private BluetoothSocket mmSocket = null;
        private Stream mmOutputStream;
        private Stream mmInputStream;

        private void FindPrinter()
		{

			try
			{
                mBluetoothAdapter = BluetoothAdapter.DefaultAdapter;

				if (mBluetoothAdapter == null)
				{
                    UserDialogs.Instance.Alert(Recursos.MissingBluetoothAdapter, Recursos.ErrorTitle, Recursos.NeutralButton);
				    return;
				}

				if (!mBluetoothAdapter.IsEnabled)
				{
					Intent enableBluetooth = new Intent
						(BluetoothAdapter.ActionRequestEnable);
					StartActivityForResult(enableBluetooth, 0);
				}

				ICollection<BluetoothDevice> pairedDevices = mBluetoothAdapter.BondedDevices;

				if (pairedDevices.Count > 0)
				{
					foreach (BluetoothDevice device in pairedDevices)
					{
						if (device.Name == Recursos.BluetoothDevice)
						{
							mmDevice = device;
							break;
						}
					}
				}

			    if (mmDevice == null)
			    {
                    UserDialogs.Instance.Alert(string.Format(Recursos.MissingBluetoothDevice, Recursos.BluetoothDevice), Recursos.ErrorTitle, Recursos.NeutralButton);
                }
			}
			catch (Exception ex)
			{
                UserDialogs.Instance.Alert(ex.Message, Recursos.ErrorTitle, Recursos.NeutralButton);
            }
		}
        // Tries to open a connection to the bluetooth printer device
        private void OpenPrinter()
        {
            
            try
            {
                if(mmDevice == null)
                    return;

                // Standard SerialPortService ID
                UUID uuid = UUID.FromString("00001101-0000-1000-8000-00805F9B34FB");
                mmSocket = mmDevice.CreateInsecureRfcommSocketToServiceRecord(uuid);
                mmSocket.Connect();
                mmOutputStream = mmSocket.OutputStream;
                mmInputStream = mmSocket.InputStream;

                beginListenForData();

            }
            catch (Exception ex)
            {
                //myLabel.Text = ex.ToString ();
            }
        }

        // After opening a connection to bluetooth printer device,
        // we have to listen and check if a data were sent to be printed.
        private void beginListenForData()
        {
        }
        public void sendData()
        {
            try
            {
                OpenPrinter();

                if (mmOutputStream == null)
                {
                    return;
                }
                // the text typed by the user
                var msg = "Hello world";
                msg += "\n";
                byte[] dBytes = System.Text.Encoding.GetEncoding(1252).GetBytes(msg);
                mmOutputStream.Write(dBytes, 0, dBytes.Length);
            }
            catch (Exception ex)
            {

            }
        }