partial void scanButtonClicked(Foundation.NSObject sender)
{
// The scanning behavior of the barcode picker is configured through scan
// settings. We start with empty scan settings and enable a very generous
// set of symbologies. In your own apps, only enable the symbologies you
// actually need.
ScanSettings settings = ScanSettings.DefaultSettings();
NSSet symbologiesToEnable = new NSSet(
Symbology.EAN13,
Symbology.EAN8,
Symbology.UPC12,
Symbology.UPCE,
Symbology.Datamatrix,
Symbology.QR,
Symbology.Code39,
Symbology.Code128,
Symbology.ITF
);
settings.EnableSymbologies(symbologiesToEnable);
// Some 1d barcode symbologies allow you to encode variable-length data. By default, the
// Scandit BarcodeScanner SDK only scans barcodes in a certain length range. If your
// application requires scanning of one of these symbologies, and the length is falling
// outside the default range, you may need to adjust the "active symbol counts" for this
// symbology. This is shown in the following 3 lines of code.
NSMutableSet codeLengths = new NSMutableSet();
int i = 0;
for (i = 7; i <= 20; i++)
{
codeLengths.Add(new NSNumber(i));
}
settings.SettingsForSymbology(Symbology.Code128).ActiveSymbolCounts = codeLengths;
// For details on defaults and how to calculate the symbol counts for each symbology, take
// a look at http://docs.scandit.com/stable/c_api/symbologies.html.
// Setup the barcode scanner
BarcodePicker picker = new BarcodePicker(settings);
picker.OverlayView.ShowToolBar(true);
// Add delegates for the scan and cancel event. We keep references to the
// delegates until the picker is no longer used as the delegates are softly
// referenced and can be removed because of low memory.
scanDelegate = new PickerScanDelegate();
picker.ScanDelegate = scanDelegate;
cancelDelegate = new OverlayCancelDelegate(this, picker);
picker.OverlayView.CancelDelegate = cancelDelegate;
PresentViewController(picker, true, null);
picker.StartScanning();
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
// The scanning behavior of the barcode picker is configured through scan
// settings. We start with empty scan settings and enable a generous set
// of 1D symbologies. Matrix scan is currently only supported for 1D
// symbologies, enabling 2D symbologies will result in unexpected results.
// In your own apps, only enable the symbologies you actually need.
ScanSettings settings = ScanSettings.DefaultSettings();
NSSet symbologiesToEnable = new NSSet(
Symbology.EAN13,
Symbology.EAN8,
Symbology.UPC12,
Symbology.UPCE,
Symbology.Code39,
Symbology.Code128,
Symbology.ITF
);
// Enable matrix scan and set the max number of barcodes that can be recognized per frame
// to some reasonable number for your use case. The max number of codes per frame does not
// limit the number of codes that can be tracked at the same time, it only limits the
// number of codes that can be newly recognized per frame.
settings.EnableSymbologies(symbologiesToEnable);
settings.MatrixScanEnabled = true;
settings.MaxNumberOfCodesPerFrame = 10;
settings.HighDensityModeEnabled = true;
// When matrix scan is enabled beeping/vibrating is often not wanted.
BarcodePicker picker = new BarcodePicker(settings);
picker.OverlayView.SetBeepEnabled(false);
picker.OverlayView.SetVibrateEnabled(false);
// Register a SBSScanDelegate delegate, in order to be notified about relevant events
// (e.g. a successfully scanned bar code).
scanDelegate = new PickerScanDelegate();
picker.ScanDelegate = scanDelegate;
// Register a SBSProcessFrameDelegate delegate to be able to reject tracked codes.
processFrameDelegate = new PickerProcessFrameDelegate();
picker.ProcessFrameDelegate = processFrameDelegate;
AddChildViewController(picker);
picker.View.Frame = View.Bounds;
Add(picker.View);
picker.DidMoveToParentViewController(this);
picker.OverlayView.GuiStyle = GuiStyle.MatrixScan;
picker.StartScanning();
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
// The scanning behavior of the barcode picker is configured through scan
// settings. We start with empty scan settings and enable a very generous
// set of symbologies. In your own apps, only enable the symbologies you
// actually need.
ScanSettings settings = ScanSettings.DefaultSettings();
NSSet symbologiesToEnable = new NSSet(
Symbology.EAN13,
Symbology.EAN8,
Symbology.UPC12,
Symbology.UPCE,
Symbology.Datamatrix,
Symbology.QR,
Symbology.Code39,
Symbology.Code128,
Symbology.ITF
);
settings.EnableSymbologies(symbologiesToEnable);
// Enable and set the restrict active area. This will make sure that codes are only scanned in a very thin band in the center of the image.
settings.SetActiveScanningArea(new CoreGraphics.CGRect(0, 0.48, 1, 0.04));
// Setup the barcode scanner
picker = new BarcodePicker(settings);
picker.OverlayView.ShowToolBar(false);
// Add delegate for the scan event. We keep references to the
// delegates until the picker is no longer used as the delegates are softly
// referenced and can be removed because of low memory.
scanDelegate = new PickerScanDelegate();
picker.ScanDelegate = scanDelegate;
AddChildViewController(picker);
picker.View.Frame = View.Bounds;
Add(picker.View);
picker.DidMoveToParentViewController(this);
// Modify the GUI style to have a "laser" line instead of a square viewfinder.
picker.OverlayView.GuiStyle = GuiStyle.Laser;
// Start scanning in paused state.
picker.StartScanning(true);
showAimAndScanButton();
}
private ScanSettings CreateScanSettings()
{
var settings = pickerView.Settings;
var scanSettings = ScanSettings.DefaultSettings();
// Symbologies
scanSettings.SetSymbologyEnabled(Symbology.EAN13, settings.Ean13Upc12);
scanSettings.SetSymbologyEnabled(Symbology.UPC12, settings.Ean13Upc12);
scanSettings.SetSymbologyEnabled(Symbology.EAN8, settings.Ean8);
scanSettings.SetSymbologyEnabled(Symbology.UPCE, settings.Upce);
scanSettings.SetSymbologyEnabled(Symbology.TwoDigitAddOn, settings.TwoDigitAddOn);
scanSettings.SetSymbologyEnabled(Symbology.FiveDigitAddOn, settings.FiveDigitAddOn);
scanSettings.SetSymbologyEnabled(Symbology.Code11, settings.Code11);
scanSettings.SetSymbologyEnabled(Symbology.Code25, settings.Code25);
scanSettings.SetSymbologyEnabled(Symbology.Code32, settings.Code32);
scanSettings.SetSymbologyEnabled(Symbology.Code39, settings.Code39);
scanSettings.SetSymbologyEnabled(Symbology.Code93, settings.Code93);
scanSettings.SetSymbologyEnabled(Symbology.Code128, settings.Code128);
scanSettings.SetSymbologyEnabled(Symbology.ITF, settings.Interleaved2Of5);
scanSettings.SetSymbologyEnabled(Symbology.MSIPlessey, settings.MsiPlessey);
scanSettings.SetSymbologyEnabled(Symbology.GS1Databar, settings.Gs1Databar);
scanSettings.SetSymbologyEnabled(Symbology.GS1DatabarExpanded, settings.Gs1DatabarExpanded);
scanSettings.SetSymbologyEnabled(Symbology.GS1DatabarLimited, settings.Gs1DatabarLimited);
scanSettings.SetSymbologyEnabled(Symbology.Codabar, settings.Codabar);
scanSettings.SetSymbologyEnabled(Symbology.QR, settings.Qr);
scanSettings.SetSymbologyEnabled(Symbology.Datamatrix, settings.DataMatrix);
scanSettings.SetSymbologyEnabled(Symbology.PDF417, settings.Pdf417);
scanSettings.SetSymbologyEnabled(Symbology.MicroPDF417, settings.MicroPdf417);
scanSettings.SetSymbologyEnabled(Symbology.Aztec, settings.Aztec);
scanSettings.SetSymbologyEnabled(Symbology.MaxiCode, settings.MaxiCode);
scanSettings.SetSymbologyEnabled(Symbology.RM4SCC, settings.Rm4scc);
scanSettings.SetSymbologyEnabled(Symbology.KIX, settings.Kix);
scanSettings.SetSymbologyEnabled(Symbology.DotCode, settings.Kix);
scanSettings.SetSymbologyEnabled(Symbology.MicroQr, settings.MicroQR);
scanSettings.SetSymbologyEnabled(Symbology.LAPA4SC, settings.Lapa4sc);
if (settings.QrInverted)
{
var qrSettings = scanSettings.SettingsForSymbology(Symbology.QR);
qrSettings.ColorInvertedEnabled = true;
}
var isScanningAreaOverridden = false;
if (settings.DataMatrix)
{
var datamatrixSettings = scanSettings.SettingsForSymbology(Symbology.Datamatrix);
datamatrixSettings.ColorInvertedEnabled = settings.DataMatrixInverted;
if (settings.DpmMode)
{
scanSettings.RestrictedAreaScanningEnabled = true;
var scanninArea = new CoreGraphics.CGRect(0.33f, 0.33f, 0.33f, 0.33f);
scanSettings.SetActiveScanningArea(scanninArea);
isScanningAreaOverridden = true;
// Enabling the direct_part_marking_mode extension comes at the cost of increased frame processing times.
// It is recommended to restrict the scanning area to a smaller part of the image for best performance.
datamatrixSettings.SetExtensionEnabled("direct_part_marking_mode", true);
}
}
if (settings.RestrictScanningArea && !isScanningAreaOverridden)
{
var y = settings.HotSpotY;
var width = settings.HotSpotWidth;
var height = settings.HotSpotHeight;
scanSettings.ScanningHotSpot = new CoreGraphics.CGPoint(0.5, y);
var scanninArea = new CoreGraphics.CGRect(0.5 - width / 2, y - (height / 2), width, height);
scanSettings.SetActiveScanningArea(scanninArea);
}
if (settings.TwoDigitAddOn || settings.FiveDigitAddOn)
{
scanSettings.MaxNumberOfCodesPerFrame = 2;
}
else
{
scanSettings.MaxNumberOfCodesPerFrame = 1;
}
scanSettings.HighDensityModeEnabled = (settings.Resolution == Resolution.HD);
scanSettings.MatrixScanEnabled = (settings.GuiStyle == GuiStyle.MatrixScan);
return(scanSettings);
}
/// <summary>
/// On element changed event
/// </summary>
/// <param name="e"></param>
protected override void OnElementChanged(ElementChangedEventArgs <ScandItCamera> e)
{
base.OnElementChanged(e);
//assign new elemnt value to scanned it camera
_scanedItCamera = e.NewElement;
if (Control == null)
{
try
{
var scanLicense = new ScanditLicense();
scanLicense.AppKey = ScanditAppKey;
ScanSettings scanSettings = ScanSettings.DefaultSettings();
//set code duplication filter
if (_scanedItCamera.AllowDuplicate)
{
scanSettings.CodeDuplicateFilter = 1500; //1.5 sec delay for duplication scanning
}
else
{
scanSettings.CodeDuplicateFilter = -1;
}
//Bar code symbologies
scanSettings.SetSymbologyEnabled(Symbology.EAN13, true);
scanSettings.SetSymbologyEnabled(Symbology.QR, true);
scanSettings.SetSymbologyEnabled(Symbology.UPC12, true);
scanSettings.SetSymbologyEnabled(Symbology.Code128, true);
scanSettings.SetSymbologyEnabled(Symbology.Code39, true);
scanSettings.SetSymbologyEnabled(Symbology.EAN8, true);
//update code 128 settings
var code128Settings = scanSettings.SettingsForSymbology(Symbology.Code128);
var countArray = NSArray.FromObjects(4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27,
28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40);
code128Settings.ActiveSymbolCounts = new NSSet(countArray);
//apply scan settings
_picker = new BarcodePicker(scanSettings);
_picker.OverlayView.SetBeepEnabled(true);
_picker.OverlayView.SetVibrateEnabled(true);
_picker.OverlayView.SetCameraSwitchVisibility(CameraSwitchVisibility.Never);
_picker.OverlayView.GuiStyle = GuiStyle.None;
//to set picker gui style
if (_scanedItCamera.ShowFocus)
{
_picker.OverlayView.GuiStyle = GuiStyle.Default;
}
else
{
_picker.OverlayView.GuiStyle = GuiStyle.None;
}
_picker.DidScan += DidScan;
//set native control as picker view
SetNativeControl(_picker.View);
//enable action for start and stop scanning
if (_scanedItCamera != null)
{
_scanedItCamera.StartScanning = StartScanning;
_scanedItCamera.StopScanning = StopScanning;
}
}
catch (Exception ex)
{
Debug.WriteLine(ex);
}
}
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
contatinerView = new UIView(CGRect.Empty);
View.AddSubview(contatinerView);
freezeButton = new UIButton(CGRect.Empty);
freezeButton.SetTitle("Freeze", UIControlState.Normal);
freezeButton.SetBackgroundImage(UIImageExtensions.Brand.GetImage(), UIControlState.Normal);
freezeButton.TouchUpInside += (sender, e) =>
{
var scanning = picker.IsScanning();
if (scanning)
{
matrixScanHandler.Enabled = false;
picker.PauseScanning();
freezeButton.SetTitle("Done", UIControlState.Normal);
}
else
{
matrixScanHandler.RemoveAllAugmentations();
matrixScanHandler.Enabled = true;
picker.StartScanning();
freezeButton.SetTitle("Freeze", UIControlState.Normal);
}
};
View.AddSubview(freezeButton);
freezeButton.TranslatesAutoresizingMaskIntoConstraints = false;
contatinerView.TranslatesAutoresizingMaskIntoConstraints = false;
View.AddConstraints(new[]
{
contatinerView.LeadingAnchor.ConstraintEqualTo(View.LeadingAnchor),
contatinerView.TopAnchor.ConstraintEqualTo(View.TopAnchor),
contatinerView.TrailingAnchor.ConstraintEqualTo(View.TrailingAnchor),
contatinerView.BottomAnchor.ConstraintEqualTo(View.BottomAnchor),
freezeButton.LeadingAnchor.ConstraintEqualTo(View.LeadingAnchor, 20),
freezeButton.BottomAnchor.ConstraintEqualTo(View.BottomAnchor, -20),
freezeButton.TrailingAnchor.ConstraintEqualTo(View.TrailingAnchor, -20),
freezeButton.HeightAnchor.ConstraintEqualTo(60)
});
var settings = ScanSettings.DefaultSettings();
settings.SetSymbologyEnabled(Symbology.EAN13, true);
settings.MatrixScanEnabled = true;
settings.MaxNumberOfCodesPerFrame = 15;
settings.HighDensityModeEnabled = true;
picker = new BarcodePicker(settings);
picker.OverlayView.GuiStyle = GuiStyle.None;
matrixScanHandler = new MatrixScanHandler(picker);
matrixScanHandler.ShouldReject += (matrixScanHandler, trackedBarcode) => false;
// This delegate method is called every time a new frame has been processed.
// In this case we use it to update the offset of the augmentation.
matrixScanHandler.DidProcess += (sender, e) =>
{
DispatchQueue.MainQueue.DispatchAsync(() =>
{
foreach (var item in e.Frame.TrackedCodes)
{
var offset = GetYOffSet(item.Value as TrackedBarcode);
viewBasedMatrixScanOverlay.SetOffset(offset, item.Key as NSNumber);
}
});
};
viewBasedMatrixScanOverlay = new ViewBasedMatrixScanOverlay();
// This method is called every time a new barcode has been tracked.
// You can implement this method to return the offset that will be used to position the augmentation
// with respect to the center of the tracked barcode.
viewBasedMatrixScanOverlay.OffsetForOverlay += (overlay, barcode, identifier) => GetYOffSet(barcode);
// This delegate method is called every time a new barcode has been tracked.
// You can implement this method to return the view that will be used as the augmentation.
viewBasedMatrixScanOverlay.ViewForOverlay += (overlay, barcode, identifier) =>
{
if (barcode.Data == null)
{
return(new UIView(CGRect.Empty));
}
var view = new StockView(new CGRect(0, 0, StockView.StandardWidth, StockView.StandardHeight));
var model = Model.MockedModel(barcode.Data);
view.AddGestureRecognizer(new UITapGestureRecognizer(() =>
{
var overlayViewController = new OverlayViewController
{
Model = model,
ModalTransitionStyle = UIModalTransitionStyle.CoverVertical,
ModalPresentationStyle = UIModalPresentationStyle.OverCurrentContext
};
PresentViewController(overlayViewController, false, null);
}));
view.Model = model;
return(view);
};
// Add a ViewBasedMatrixScanOverlay in order to have custom UIView instances as augmentations.
matrixScanHandler.AddOverlay(viewBasedMatrixScanOverlay);
simpleMatrixScanOverlay = new SimpleMatrixScanOverlay();
// This method is called every time a new barcode has been tracked.
// You can implement this method to customize the color of the highlight.
simpleMatrixScanOverlay.ColorForOverlay += (overlay, barcode, identifier) => Model.MockedColor(barcode.Data);
// Add a SimpleMatrixScanOverlay in order to highlight the barcodes.
matrixScanHandler.AddOverlay(simpleMatrixScanOverlay);
AddChildViewController(picker);
picker.View.Frame = contatinerView.Frame;
picker.View.AutoresizingMask = UIViewAutoresizing.FlexibleHeight | UIViewAutoresizing.FlexibleWidth;
contatinerView.AddSubview(picker.View);
picker.DidMoveToParentViewController(this);
picker.StartScanning();
}
