private void InitializeAndStartBarcodeScanning() { // Create data capture context using your license key. this.dataCaptureContext = DataCaptureContext.ForLicenseKey(SCANDIT_LICENSE_KEY); // Use the default camera with the recommended camera settings for the BarcodeCapture mode // and set it as the frame source of the context. The camera is off by default and must be // turned on to start streaming frames to the data capture context for recognition. // See resumeFrameSource and pauseFrameSource below. this.camera = Camera.GetDefaultCamera(); if (this.camera == null) { throw new NullReferenceException( "Sample depends on a camera, which failed to initialize."); } // Use the settings recommended by barcode capture. this.dataCaptureContext.SetFrameSourceAsync(this.camera); // The settings instance initially has all types of barcodes (symbologies) disabled. For the purpose of this // sample we enable the QR symbology. In your own app ensure that you only enable the symbologies that your app // requires as every additional enabled symbology has an impact on processing times. var barcodeCaptureSettings = BarcodeCaptureSettings.Create(); barcodeCaptureSettings.EnableSymbology(Symbology.Qr, true); // Create new barcode capture mode with the settings from above. barcodeCapture = BarcodeCapture.Create(dataCaptureContext, barcodeCaptureSettings); // By default, every time a barcode is scanned, a sound (if not in silent mode) and a // vibration are played. In the following we are setting a success feedback without sound // and vibration. barcodeCapture.Feedback.Success = new Feedback(); // Register self as a listener to get informed whenever a new barcode got recognized. barcodeCapture.AddListener(this); // To visualize the on-going barcode capturing process on screen, setup a data capture view // that renders the camera preview. The view must be connected to the data capture context. this.dataCaptureView = DataCaptureView.Create(this, this.dataCaptureContext); // Add a barcode capture overlay to the data capture view to render the location of captured // barcodes on top of the video preview. // This is optional, but recommended for better visual feedback. overlay = BarcodeCaptureOverlay.Create(this.barcodeCapture, this.dataCaptureView); // Add a square viewfinder as we are only scanning square QR codes. overlay.Viewfinder = RectangularViewfinder.Create(RectangularViewfinderStyle.Square, RectangularViewfinderLineStyle.Light); // Adjust the overlay's barcode highlighting to match the new viewfinder styles and improve the visibility of feedback. // With 6.10 we will introduce this visual treatment as a new style for the overlay. this.highlightingBrush = new Brush(fillColor: Android.Graphics.Color.Transparent, strokeColor: Android.Graphics.Color.White, strokeWidth: 3); overlay.Brush = this.highlightingBrush; SetContentView(this.dataCaptureView); }
private void InitializeAndStartBarcodeScanning() { // Create data capture context using your license key. this.dataCaptureContext = DataCaptureContext.ForLicenseKey(SCANDIT_LICENSE_KEY); // Use the default camera and set it as the frame source of the context. // The camera is off by default and must be turned on to start streaming frames to the data // capture context for recognition. // See resumeFrameSource and pauseFrameSource below. this.camera = Camera.GetDefaultCamera(); if (this.camera != null) { // Use the settings recommended by barcode capture. this.camera.ApplySettingsAsync(BarcodeCapture.RecommendedCameraSettings); this.dataCaptureContext.SetFrameSourceAsync(this.camera); } // The barcode capturing process is configured through barcode capture settings // which are then applied to the barcode capture instance that manages barcode recognition. BarcodeCaptureSettings barcodeCaptureSettings = BarcodeCaptureSettings.Create(); // The settings instance initially has all types of barcodes (symbologies) disabled. // For the purpose of this sample we enable a very generous set of symbologies. // In your own app ensure that you only enable the symbologies that your app requires as // every additional enabled symbology has an impact on processing times. HashSet <Symbology> symbologies = new HashSet <Symbology>(); symbologies.Add(Symbology.Ean13Upca); symbologies.Add(Symbology.Ean8); symbologies.Add(Symbology.Upce); symbologies.Add(Symbology.Qr); symbologies.Add(Symbology.DataMatrix); symbologies.Add(Symbology.Code39); symbologies.Add(Symbology.Code128); symbologies.Add(Symbology.InterleavedTwoOfFive); barcodeCaptureSettings.EnableSymbologies(symbologies); // Some linear/1d barcode symbologies allow you to encode variable-length data. // By default, the Scandit Data Capture 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 few lines of code for one of the // variable-length symbologies. SymbologySettings symbologySettings = barcodeCaptureSettings.GetSymbologySettings(Symbology.Code39); ICollection <short> activeSymbolCounts = new HashSet <short>( new short[] { 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 }); symbologySettings.ActiveSymbolCounts = activeSymbolCounts; // Create new barcode capture mode with the settings from above. this.barcodeCapture = BarcodeCapture.Create(this.dataCaptureContext, barcodeCaptureSettings); // Register self as a listener to get informed whenever a new barcode got recognized. barcodeCapture.AddListener(this); // To visualize the on-going barcode capturing process on screen, setup a data capture view // that renders the camera preview. The view must be connected to the data capture context. this.dataCaptureView = DataCaptureView.Create(this, this.dataCaptureContext); // Add a barcode capture overlay to the data capture view to render the location of captured // barcodes on top of the video preview. // This is optional, but recommended for better visual feedback. BarcodeCaptureOverlay overlay = BarcodeCaptureOverlay.Create(this.barcodeCapture, this.dataCaptureView); overlay.Viewfinder = RectangularViewfinder.Create(); SetContentView(this.dataCaptureView); }