protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
// If no parameters were passed, we navigated here for some other reason
// so let's ignore it
if (e.Parameter == null)
{
return;
}
Parameters = e.Parameter as ScanPageNavigationParameters;
if (Parameters != null)
{
Parameters.Scanner.ScanPage = this;
}
scannerControl.TopText = Parameters?.Scanner?.TopText ?? "";
scannerControl.BottomText = Parameters?.Scanner?.BottomText ?? "";
scannerControl.CustomOverlay = Parameters?.Scanner?.CustomOverlay;
scannerControl.UseCustomOverlay = Parameters?.Scanner?.UseCustomOverlay ?? false;
scannerControl.ScanningOptions = Parameters?.Options ?? new MobileBarcodeScanningOptions();
scannerControl.ContinuousScanning = Parameters?.ContinuousScanning ?? false;
scannerControl.StartScanning(Parameters?.ResultHandler, Parameters?.Options);
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
// If no parameters were passed, we navigated here for some other reason
// so let's ignore it
if (e.Parameter == null)
return;
Parameters = e.Parameter as ScanPageNavigationParameters;
if (Parameters != null)
Parameters.Scanner.ScanPage = this;
scannerControl.TopText = Parameters?.Scanner?.TopText ?? "";
scannerControl.BottomText = Parameters?.Scanner?.BottomText ?? "";
scannerControl.CustomOverlay = Parameters?.Scanner?.CustomOverlay;
scannerControl.UseCustomOverlay = Parameters?.Scanner?.UseCustomOverlay ?? false;
scannerControl.ScanningOptions = Parameters?.Options ?? new MobileBarcodeScanningOptions ();
scannerControl.ContinuousScanning = Parameters?.ContinuousScanning ?? false;
scannerControl.StartScanning(Parameters?.ResultHandler, Parameters?.Options);
}
async Task <Result> PlatformScan(MobileBarcodeScanningOptions options)
{
var rootFrame = RootFrame ?? Window.Current.Content as Frame ?? ((FrameworkElement)Window.Current.Content).GetFirstChildOfType <Frame>();
var dispatcher = Dispatcher ?? Window.Current.Dispatcher;
var tcsScanResult = new TaskCompletionSource <Result>();
await dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
var pageOptions = new ScanPageNavigationParameters
{
Options = options,
ResultHandler = r =>
{
tcsScanResult.SetResult(r);
},
Scanner = this,
ContinuousScanning = false,
CameraInitialized = () => { OnCameraInitialized?.Invoke(); },
CameraError = (errors) => { OnCameraError?.Invoke(errors); }
};
rootFrame.Navigate(typeof(ScanPage), pageOptions);
});
var result = await tcsScanResult.Task;
await dispatcher.RunAsync(CoreDispatcherPriority.High, () =>
{
if (rootFrame.CanGoBack)
{
rootFrame.GoBack();
}
});
return(result);
}
