/// <summary>
/// Accepts data from an NFC touch and performs a search for any printers with matching information.
/// </summary>
/// <param name="intent"> intent that contains NFC payload data </param>
private void ProcessNfcScan(Intent intent)
{
IParcelable[] scannedTags = intent.GetParcelableArrayExtra(NfcAdapter.ExtraNdefMessages);
if (scannedTags != null && scannedTags.Length > 0)
{
NdefMessage msg = (NdefMessage)scannedTags[0];
byte[] payloadBytes = msg.GetRecords()[0].GetPayload();
String payload = String.Empty;
foreach (byte b in payloadBytes)
{
payload += Convert.ToChar(b);
}
NfcDevice nfcDevice = new NfcDevice
{
FriendlyName = GetDeviceFriendlyName(payload),
MacAddress = GetDeviceMacAddress(payloadBytes),
PIN = GetDevicePIN(payload).Value
};
if (IsDevicePaired(nfcDevice.FriendlyName))
{
ShowAlreadyPaired(nfcDevice.FriendlyName);
}
else
{
StartSearching(nfcDevice.FriendlyName);
RunOnUiThread(() =>
{
try
{
if (bluetoothAdapter == null)
{
throw new Exception("No Bluetooth adapter found.");
}
if (!bluetoothAdapter.IsEnabled)
{
throw new Exception("Bluetooth adapter is not enabled.");
}
PairDevice(nfcDevice);
}
catch (DiscoveryException e)
{
Console.WriteLine(e.ToString());
Console.Write(e.StackTrace);
}
finally
{
}
});
}
intent.RemoveExtra(NfcAdapter.ExtraNdefMessages);
}
}
private void PairDevice(NfcDevice nfcDevice)
{
BluetoothDevice device = bluetoothAdapter.GetRemoteDevice(nfcDevice.MacAddress);
if (device != null)
{
if (device.CreateBond())
{
OnDevicePaired(device, EventArgs.Empty);
}
else
{
Toast.MakeText(context, string.Format("{0} {1}", GetString(Resource.String.MainActivity_PairFailed), nfcDevice.FriendlyName), ToastLength.Long).Show();
}
}
else
{
Toast.MakeText(context, string.Format("{0} {1}", GetString(Resource.String.MainActivity_PairFailed), nfcDevice.FriendlyName), ToastLength.Long).Show();
}
}