public override void ScanningOptionsUpdate(ScanningOptionsBase options)
{
if (options is ZXingOptions zOpt)
{
if (zOpt.TryHarder.HasValue)
{
_reader.Options.TryHarder = zOpt.TryHarder.Value;
}
if (zOpt.PureBarcode.HasValue)
{
_reader.Options.PureBarcode = zOpt.PureBarcode.Value;
}
if (zOpt.AutoRotate.HasValue)
{
_reader.AutoRotate = zOpt.AutoRotate.Value;
}
if (zOpt.UseCode39ExtendedMode.HasValue)
{
_reader.Options.UseCode39ExtendedMode = zOpt.UseCode39ExtendedMode.Value;
}
if (!string.IsNullOrEmpty(zOpt.CharacterSet))
{
_reader.Options.CharacterSet = zOpt.CharacterSet;
}
if (zOpt.TryInverted.HasValue)
{
_reader.TryInverted = zOpt.TryInverted.Value;
}
if (zOpt.AssumeGS1.HasValue)
{
_reader.Options.AssumeGS1 = zOpt.AssumeGS1.Value;
}
}
}
public virtual void SetScannerOptions(ScanningOptionsBase value)
{
if (value == null)
{
return;
}
_scanningOptions = value;
Decoder.ScanningOptionsUpdate(value);
}
public void StartScanning(Action <IScanResult> scanResultCallback, ScanningOptionsBase options = null)
{
//fix Android 7 bug: camera freezes because surfacedestroyed function isn't always called correct, the old surfaceview was still visible.
this.Visibility = ViewStates.Visible;
CameraPreviewSettings.Instance.SetScannerOptions(options);
CameraAnalyzer.ResultFound += (sender, result) => { scanResultCallback?.Invoke(result); };
CameraAnalyzer.ResumeAnalysis();
}
async void Default_Vision_Clicked(object sender, System.EventArgs e)
{
if (!await CheckCameraPermisstions())
{
return;
}
var options = new ScanningOptionsBase();
scanPage = new ScannerPage(options, null);
await Navigation.PushAsync(scanPage);
}
public void StartScanning(Action <IScanResult> scanResultHandler, ScanningOptionsBase options = null)
{
if (!stopped)
{
return;
}
stopped = false;
var perf = PerformanceCounter.Start();
Setup(this.Frame);
CameraPreviewSettings.Instance.SetScannerOptions(options);
this.resultCallback = scanResultHandler;
Logger.Log("StartScanning");
this.InvokeOnMainThread(() =>
{
if (!SetupCaptureSession())
{
//Setup 'simulated' view:
Logger.Log("Capture Session FAILED");
}
if (Runtime.Arch == Arch.SIMULATOR)
{
var simView = new UIView(new CGRect(0, 0, this.Frame.Width, this.Frame.Height));
simView.BackgroundColor = UIColor.LightGray;
simView.AutoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleHeight;
this.InsertSubview(simView, 0);
}
});
if (!analyzing)
{
analyzing = true;
}
PerformanceCounter.Stop(perf, "PERF: StartScanning() Took {0} ms.");
var evt = this.OnScannerSetupComplete;
if (evt != null)
{
evt();
}
}
public ScannerPage(ScanningOptionsBase options = null, View customOverlay = null) : base()
{
_scannerView = new ScannerView
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
Options = options,
};
_scannerView.SetBinding(ScannerView.IsAnalyzingProperty, new Binding(nameof(IsAnalyzing)));
_scannerView.SetBinding(ScannerView.IsScanningProperty, new Binding(nameof(IsScanning)));
_scannerView.SetBinding(ScannerView.ResultProperty, new Binding(nameof(Result)));
_scannerView.OnScanResult += (result) =>
{
this.OnScanResult?.Invoke(result);
};
var grid = new Grid
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
};
grid.Children.Add(_scannerView);
if (customOverlay != null)
{
Overlay = customOverlay;
grid.Children.Add(Overlay);
}
// The root page of your application
Content = grid;
}
public virtual void ScanningOptionsUpdate(ScanningOptionsBase options)
{
}
