public void Cancel()
{
((UIViewController)_qrCodeScanController)?.InvokeOnMainThread(() => {
_qrCodeScanController.Cancel();
((UIViewController)_qrCodeScanController).DismissViewController(false, null);
});
if (_continousScanHandler != null)
{
_continousScanHandler.Invoke(null);
_continousScanHandler = null;
}
_scanResultResetEvent.Set();
}
public Task <Result> Scan(MobileBarcodeScanningOptions options)
{
options.TryInverted = true;
return(Task.Factory.StartNew(() => {
try
{
_scanResultResetEvent.Reset();
Result result = null;
UIDevice.CurrentDevice.InvokeOnMainThread(() => {
_qrCodeScanController = new QrCodeScanController(options, this);
_qrCodeScanController.OnScannedResult += barcodeResult => {
((UIViewController)_qrCodeScanController).InvokeOnMainThread(() => {
_qrCodeScanController.Cancel();
try
{
((UIViewController)_qrCodeScanController).DismissViewController(true, () => {
result = barcodeResult;
_scanResultResetEvent.Set();
});
}
catch (ObjectDisposedException)
{
result = barcodeResult;
_scanResultResetEvent.Set();
}
});
};
ViewHelper.CurrentController.PresentViewController((UIViewController)_qrCodeScanController, true, null);
});
_scanResultResetEvent.WaitOne();
((UIViewController)_qrCodeScanController).Dispose();
return result;
}
catch (Exception ex)
{
Console.WriteLine(ex);
return null;
}
}));
}