Flutter QR Code Scanner

A lightweight Flutter barcode and QR code scanner plugin implemented with Dynamsoft Camera Enhancer and Dynamsoft Barcode Reader.

Supported Platforms

  • Android
  • iOS

Mobile Camera and Barcode SDK Version

  • Dynamsoft Camera Enhancer 2.1.3
  • Dynamsoft Barcode Reader 9.0.1

Build Configuration

Android

Change the minimum Android sdk version to 21 (or higher) and change the compile sdk version to 31 (or higher) in your android/app/build.gradle file.

minSdkVersion 21
compileSdkVersion 31

iOS

Add camera access permission to ios/Runner/Info.plist:

<key>NSCameraUsageDescription</key>
<string>Can I use the camera please?</string>
<key>NSMicrophoneUsageDescription</key>
<string>Can I use the mic please?</string>

Try Real-time QR Code Scanning

cd example
flutter run
Flutter QR Code scanner

Usage

  • Create a QR code scanner view:

      ScannerViewController? controller;
      ScannerView(onScannerViewCreated: onScannerViewCreated);
      void onScannerViewCreated(ScannerViewController controller) {
          setState(() {
            this.controller = controller;
          });
          controller.scannedDataStream.listen((results) {
    
          });
        }
    
  • Get a 30-day trial license to activate QR code detection API.

      await controller.setLicense(
          'DLS2eyJoYW5kc2hha2VDb2RlIjoiMjAwMDAxLTE2NDk4Mjk3OTI2MzUiLCJvcmdhbml6YXRpb25JRCI6IjIwMDAwMSIsInNlc3Npb25QYXNzd29yZCI6IndTcGR6Vm05WDJrcEQ5YUoifQ==');
    
  • Initialize barcode and QR code scanner:

      await controller.init();
    
  • Use controller to start and stop real-time QR code scanning.

      await controller.startScanning();
      await controller.stopScanning();
    

Libraries

dynamsoft_barcode
flutter_camera_qrcode_scanner