/// <summary>
/// Starts tags detection
/// </summary>
public void StartListening()
{
if (_nfcAdapter == null)
{
return;
}
var intent = new Intent(CurrentActivity, CurrentActivity.GetType()).AddFlags(ActivityFlags.SingleTop);
var pendingIntent = PendingIntent.GetActivity(CurrentActivity, 0, intent, 0);
var ndefFilter = new IntentFilter(NfcAdapter.ActionNdefDiscovered);
ndefFilter.AddDataType("*/*");
var tagFilter = new IntentFilter(NfcAdapter.ActionTagDiscovered);
tagFilter.AddCategory(Intent.CategoryDefault);
var filters = new IntentFilter[] { ndefFilter, tagFilter };
_nfcAdapter.EnableForegroundDispatch(CurrentActivity, pendingIntent, filters, null);
_isListening = true;
OnTagListeningStatusChanged?.Invoke(_isListening);
}
/// <summary>
/// Stops tag publishing
/// </summary>
public void StopPublishing()
{
_isWriting = _isFormatting = _customInvalidation = false;
_tag = null;
NfcSession?.InvalidateSession();
OnTagListeningStatusChanged?.Invoke(false);
}
/// <summary>
/// Starts tags detection
/// </summary>
public void StartListening()
{
_defaultDevice.DeviceArrived += OnDeviceArrived;
_defaultDevice.DeviceDeparted += OnDeviceDeparted;
_ndefSubscriptionId = _defaultDevice.SubscribeForMessage("NDEF", OnNdefMessageReceived);
OnTagListeningStatusChanged?.Invoke(true);
}
/// <summary>
/// Starts tags detection
/// </summary>
public void StartListening()
{
NfcSession = new NFCNdefReaderSession(this, DispatchQueue.CurrentQueue, true)
{
AlertMessage = Configuration.Messages.NFCDialogAlertMessage
};
NfcSession?.BeginSession();
OnTagListeningStatusChanged?.Invoke(true);
}
/// <summary>
/// Stops tags detection
/// </summary>
public void StopListening()
{
DisablePublishing();
if (_nfcAdapter != null)
{
_nfcAdapter.DisableForegroundDispatch(CurrentActivity);
}
_isListening = false;
OnTagListeningStatusChanged?.Invoke(_isListening);
}
/// <summary>
/// Stops tags detection
/// </summary>
public void StopListening()
{
_defaultDevice.DeviceArrived -= OnDeviceArrived;
_defaultDevice.DeviceDeparted -= OnDeviceDeparted;
if (_ndefSubscriptionId != -1)
{
_defaultDevice.StopSubscribingForMessage(_ndefSubscriptionId);
_ndefSubscriptionId = -1;
}
OnTagListeningStatusChanged?.Invoke(false);
}
/// <summary>
/// Starts tags detection
/// </summary>
public void StartListening()
{
_customInvalidation = false;
_isWriting = false;
_isFormatting = false;
NfcSession = new NFCTagReaderSession(NFCPollingOption.Iso14443 | NFCPollingOption.Iso15693, this, DispatchQueue.CurrentQueue)
{
AlertMessage = Configuration.Messages.NFCDialogAlertMessage
};
NfcSession?.BeginSession();
OnTagListeningStatusChanged?.Invoke(true);
}
/// <summary>
/// Invalidate the session
/// </summary>
/// <param name="session"><see cref="NFCTagReaderSession"/></param>
/// <param name="message">Message to show</param>
void Invalidate(NFCTagReaderSession session, string message = null)
{
_customInvalidation = true;
if (string.IsNullOrWhiteSpace(message))
{
session.InvalidateSession();
}
else
{
session.InvalidateSession(message);
}
OnTagListeningStatusChanged?.Invoke(false);
}
/// <summary>
/// Starts tag publishing (writing or formatting)
/// </summary>
/// <param name="clearMessage">Format tag</param>
public void StartPublishing(bool clearMessage = false)
{
if (!IsAvailable)
{
throw new InvalidOperationException(Configuration.Messages.NFCWritingNotSupported);
}
_customInvalidation = false;
_isWriting = true;
_isFormatting = clearMessage;
NfcSession = new NFCTagReaderSession(NFCPollingOption.Iso14443 | NFCPollingOption.Iso15693, this, DispatchQueue.CurrentQueue)
{
AlertMessage = Configuration.Messages.NFCDialogAlertMessage
};
NfcSession?.BeginSession();
OnTagListeningStatusChanged?.Invoke(true);
}
/// <summary>
/// Stops tags detection
/// </summary>
public void StopListening()
{
NfcSession?.InvalidateSession();
OnTagListeningStatusChanged?.Invoke(false);
}
