// This method is called whenever objects are updated and it's the right place to react to the tracking results.
public void OnSessionUpdated(BarcodeTracking barcodeTracking, BarcodeTrackingSession session, IFrameData frameData)
{
DispatchQueue.MainQueue.DispatchAsync(() =>
{
if (!this.barcodeTracking.Enabled)
{
return;
}
foreach (var identifier in session.RemovedTrackedBarcodes)
{
this.overlays.Remove(identifier);
}
var filteredTrackedCodes = session.TrackedBarcodes.Values.Where(code => code != null && code.Barcode != null && !string.IsNullOrEmpty(code.Barcode.Data));
foreach (var trackedCode in filteredTrackedCodes)
{
var success = this.overlays.TryGetValue(trackedCode.Identifier, out UIView overlay);
if (!success)
{
return;
}
overlay.Hidden = this.ShouldHideOverlay(trackedCode, this.captureView.Frame.Width);
}
});
// Dispose the frame when you have finished processing it. If the frame is not properly disposed,
// different issues could arise, e.g. a frozen, non-responsive, or "severely stuttering" video feed.
frameData.Dispose();
}
public void OnSessionUpdated(BarcodeTracking barcodeTracking, BarcodeTrackingSession session, IFrameData frameData)
{
lock (scanResults)
{
foreach (var trackedBarcode in
session.AddedTrackedBarcodes.Where(trb => IsValidBarcode(trb.Barcode)))
{
scanResults.Add(new ScanResult(trackedBarcode.Barcode));
}
}
}
public void OnSessionUpdated(BarcodeTracking barcodeTracking, BarcodeTrackingSession session, IFrameData frameData)
{
var products = session.TrackedBarcodes.Values
.Select(trackedBarcode => trackedBarcode.Barcode)
.Where(barcode => barcode.Data != null)
.Select(barcode => Model.Product.Create(barcode.Data, barcode.Symbology.HumanReadableName()));
if (this.Element?.BindingContext is MainViewModel viewModel)
{
viewModel.ScannedProducts = products.ToList();
}
}
public void OnSessionUpdated(BarcodeTracking barcodeCapture, BarcodeTrackingSession session, IFrameData frameData)
{
lock (this.scanResults)
{
foreach (var trackedBarcode in session.AddedTrackedBarcodes)
{
this.scanResults.Add(new ScanResult
{
Data = trackedBarcode.Barcode.Data,
Symbology = SymbologyDescription.Create(trackedBarcode.Barcode.Symbology).ReadableName
});
}
}
}
public void OnSessionUpdated(BarcodeTracking barcodeTracking, BarcodeTrackingSession session, IFrameData frameData)
{
DispatchQueue.MainQueue.DispatchAsync(() =>
{
this.scanResults = session.TrackedBarcodes?.Values.Select(v => new ScanResult
{
Data = v.Barcode.Data,
Symbology = v.Barcode.Symbology.ReadableName()
}).ToHashSet();
});
// Dispose the frame when you have finished processing it. If the frame is not properly disposed,
// different issues could arise, e.g. a frozen, non-responsive, or "severely stuttering" video feed.
frameData.Dispose();
}
public void OnSessionUpdated(BarcodeTracking barcodeTracking, BarcodeTrackingSession session, IFrameData frameData)
{
// This method is called whenever objects are updated and it's the right place to react to the tracking results.
var products = session.TrackedBarcodes.Values
.Select(trackedBarcode => trackedBarcode.Barcode)
.Where(barcode => barcode.Data != null)
.Select(barcode => Model.Product.Create(barcode.Data, barcode.Symbology.HumanReadableName()));
if (this.Element?.BindingContext is MainViewModel viewModel)
{
viewModel.ScannedProducts = products.ToList();
}
frameData.Dispose();
}
public void OnSessionUpdated(
BarcodeTracking barcodeTracking,
BarcodeTrackingSession session,
IFrameData data)
{
if (this.IsFrozen() || this.listener == null)
{
return;
}
foreach (int identifier in session.RemovedTrackedBarcodes)
{
this.RemoveBubbleViewForIdentifierOnMainThread(identifier);
}
foreach (TrackedBarcode trackedBarcode in session.TrackedBarcodes.Values)
{
if (!string.IsNullOrEmpty(trackedBarcode.Barcode.Data))
{
// We show or hide the bubble depending on its size compared to the device screen.
this.SetBubbleVisibilityOnMainThread(trackedBarcode, this.listener.ShouldShowBubble(trackedBarcode));
}
}
}
