public IActionResult Scan(string qRCode)
{
var qRCodeScanned = QRCodeScanned.Create(qRCode);
_eventBus.Publish(qRCodeScanned, "QRCodeScanned");
return(Ok(qRCode));
}
public Task <bool> ScanQRCodeContinously(string message, QRCodeScanned onQrCodeScannedFunction, string closeButtonTitle = "Close", bool tryInverted = false)
{
var taskCompleteSource = new TaskCompletionSource <bool>();
ScanQrController.ScanContinuously(ViewHelper.CurrentActivity, message, closeButtonTitle, onQrCodeScannedFunction, taskCompleteSource, tryInverted);
return(taskCompleteSource.Task);
}
public static void ScanContinuously(
Activity activity,
string message,
string closeButtonTitle,
QRCodeScanned onQrCodeScannedFunction,
TaskCompletionSource <bool> taskCompletionSource,
bool tryInverted)
{
BarcodeScanner.Initialize(activity.Application);
var scanner = new BarcodeScanner();
var overlayView = new ScanQrOverlayView(activity);
scanner.CustomOverlay = overlayView;
overlayView.SetDescriptionText(message);
overlayView.SetCloseButtonText(closeButtonTitle);
var position = 0;
bool isScanningContinouslyExecuting = false;
scanner.ScanContinuously(new MobileBarcodeScanningOptions()
{
DelayBetweenContinuousScans = 3000,
TryInverted = tryInverted
},
async result =>
{
if (isScanningContinouslyExecuting)
{
return;
}
isScanningContinouslyExecuting = true;
var scanQrUpdate = await onQrCodeScannedFunction.Invoke(position, result.Text);
if (scanQrUpdate == null)
{
return;
}
if (scanQrUpdate.WillCancel)
{
taskCompletionSource.SetResult(true);
taskCompletionSource = null;
scanner.Cancel();
return;
}
overlayView.SetDescriptionText(scanQrUpdate.UpdateMessage);
position++;
isScanningContinouslyExecuting = false;
});
}
private async Task WaitUntilScanned()
{
while (true)
{
string getResult = await netHandler.GETRequestAsync(qrStatusURL + "&tip=" + (qrCodeScanned ? "0" : "1"), true);
if (getResult.Contains("408"))
{
continue;
}
else if (getResult.Contains("400"))
{
QRCodeExpired?.Invoke(this, null);
return;
}
else if (getResult.Contains("201"))
{
NetworkHandler.ReadUntil(ref getResult, "base64,");
MemoryStream ms = new MemoryStream(Convert.FromBase64String(NetworkHandler.ReadUntil(ref getResult, "'")));
Image pp = Image.FromStream(ms);
qrCodeScanned = true;
QRCodeScanned.Invoke(this, new QRCodeScannedEventArgs()
{
profilePicture = pp
});
}
else if (getResult.Contains("200"))
{
NetworkHandler.ReadUntil(ref getResult, "uri=\"");
redirectUri = NetworkHandler.ReadUntil(ref getResult, "\"");
host = redirectUri;
NetworkHandler.ReadUntil(ref host, "//");
host = NetworkHandler.ReadUntil(ref host, "/");
LoginConfirmed.Invoke(this, null);
FinishLoginAsync();
break;
}
}
}
