This sample demonstrates how to integrate Dynamsoft Barcode Reader JavaScript SDK into an Android WebView application using the Foundational API for maximum flexibility and customization.

Camera permission is declared in AndroidManifest.xml:

<uses-permission android:name="android.permission.CAMERA" />

The HTML file (decodeBarcodeInVideo.html) demonstrates:

• CameraEnhancer: Controls camera operations (open, close, resolution)
• CameraView: Manages the UI layer for camera preview
• CaptureVisionRouter: Routes captured frames to the barcode reader
• Result Callbacks: Custom handling of decoded barcode results

Example code structure:

// Create camera view and enhancer
const cameraView = await Dynamsoft.DCE.CameraView.createInstance();
const cameraEnhancer = await Dynamsoft.DCE.CameraEnhancer.createInstance(cameraView);

// Create capture vision router
const cvRouter = await Dynamsoft.CVR.CaptureVisionRouter.createInstance();
cvRouter.setInput(cameraEnhancer);

// Add result receiver
cvRouter.addResultReceiver({
  onDecodedBarcodesReceived: (result) => {
    // Handle decoded barcodes
  }
});

// Start scanning
await cameraEnhancer.open();
await cvRouter.startCapturing("ReadSingleBarcode");

1. Open the Project

   cd android
   # Open in Android Studio

2. Build and Run

   • Connect an Android device or start an emulator
   • Click Run (Shift+F10) in Android Studio
   • Grant camera permission when prompted

3. Test the Scanner

   • Point the camera at a barcode
   • Decoded results will appear below the camera view

For complete API documentation:

• Foundational API Reference

This sample uses a Dynamsoft trial license. To use in production:

1. Visit the Customer Portal to obtain a license
2. Replace the license key in decodeBarcodeInVideo.html:

   Dynamsoft.License.LicenseManager.initLicense("YOUR-LICENSE-KEY");

Camera not opening:

• Ensure camera permission is granted in device settings
• Check Android version compatibility (API 21+)
• Verify WebView version supports getUserMedia API

WebView blank screen:

• Enable JavaScript in WebView settings
• Check Developer Console for JavaScript errors

Need help? Contact Dynamsoft support:

• 📧 Email: support@dynamsoft.com
• 💬 Online: Contact Form
• 📚 Documentation: Dynamsoft Barcode Reader Docs

• iOS WebView (Foundational API) - iOS version of this sample
• Android WebView (RTU API) - Simplified one-line integration
• Capacitor Sample - Cross-platform hybrid framework approach