public WebNfcListener(string ident)
{
if (!ident.Contains("@"))
{
throw new ArgumentException("Invalid ident - missing @");
}
var parts = ident.Split('@');
if (parts.Length != 2)
{
throw new ArgumentException("Invalid ident - invalid length");
}
_endpoint = parts[0];
_address = parts[1];
_ioHandler = IO.Socket($"http://{_address}", new IO.Options {
AutoConnect = false, Reconnection = true
});
_ioHandler.On(Socket.EVENT_CONNECT, (obj) =>
{
OnConnected?.Invoke();
});
_ioHandler.On("scanner.registered", (obj) =>
{
var scanner = NfcScanner.FromObject(obj);
if (!Scanners.Exists(x => x.DeviceId == scanner.DeviceId))
{
Scanners.Add(scanner);
OnScannerRegistered?.Invoke(scanner);
}
});
_ioHandler.On("scanner.disconnected", (obj) =>
{
dynamic o = obj;
string deviceId = o.device_id;
var scanner = Scanners.FirstOrDefault(x => x.DeviceId == deviceId);
if (scanner != null)
{
Scanners.Remove(scanner);
}
OnScannerDisconnected?.Invoke(scanner);
});
_ioHandler.On("scanner.scanned", (obj) =>
{
dynamic o = obj;
string deviceId = o.device_id;
var scanner = Scanners.FirstOrDefault(x => x.DeviceId == deviceId);
var s = new NfcScan {
Scanner = scanner, CardId = ((dynamic)obj).card_id
};
OnScanned?.Invoke(s);
});
}
public void Scan()
{
if (_isScanned)
{
return;
}
_isScanned = true;
OnScanned?.Invoke();
}
//private void SerialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
//{
// int len = serialPort.BytesToRead;
// byte[] buffer = new byte[len];
// serialPort.Read(buffer, 0, len);
// Buffer.AddRange(buffer);//断帧、粘包处理
// int idx_0a;//0x0d 0x0a 结束符
// while ((idx_0a = Buffer.IndexOf(0x0a)) != -1)//断帧、粘包处理
// {
// byte[] data = Buffer.Take(idx_0a - 1).ToArray();//截取0x0d 0x0a前报文
// Buffer.RemoveRange(0, idx_0a + 1);
// string strCodes = Encoding.Default.GetString(data);//TODO:编码格式 Default=GB2312
// RaiseScanned(this.Scanner, strCodes);
// }
//}
protected void RaiseScanned(ScanDevice scan, string stopNo, string data)
{
try
{
OnScanned?.Invoke(this.Scanner, stopNo, data);
}
catch (Exception ex)
{
string errMsg = "OnScanned事件委托异常！";
RaiseError(errMsg);
//MyLog.WriteLog(errMsg, ex);
}
}
public async Task StartScan(MobileBarcodeScanningOptions options = null)
{
try
{
var scanner = new MobileBarcodeScanner()
{
TopText = "Scan Code"
};
scanner.ScanContinuously(options ?? new MobileBarcodeScanningOptions
{
PossibleFormats = new List <BarcodeFormat>
{
BarcodeFormat.EAN_8,
BarcodeFormat.EAN_13,
BarcodeFormat.CODE_39,
BarcodeFormat.CODE_128,
BarcodeFormat.QR_CODE
},
AutoRotate = false,
UseFrontCameraIfAvailable = false,
TryHarder = true
}, (result) =>
{
CrossSimpleAudioPlayer.Current.Load("beep.wav");
CrossSimpleAudioPlayer.Current.Play();
OnScanned?.Invoke(this, result.Text);
MessagingCenter.Send(this, MessageKey.BARCODE_SCANNED, result.Text);
});
Device.StartTimer(TimeSpan.FromSeconds(3), () =>
{
scanner.AutoFocus();
return(true);
});
}
catch (Exception ex)
{
await Application.Current.MainPage.DisplayAlert(TranslateExtension.GetValue("alert_title_error"), ex.Message, TranslateExtension.GetValue("alert_message_ok"));
}
}