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();
}
/// <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);
}
}
}