scan_preview 1.0.1

A flutter plugin for scan barcode. This plugin is based on PlatformView, which means you can customize the scanning UI freely. By the way, the framing UI is limited to the native API, and only a part [...]

scan_preview

A QR code scanner flutter plugin project. Using PlatfromView to open native camera page scan qr code.

Installation

Add this to your package's pubspec.yaml file:

dependencies:  
  scan_preview: ^1.0.0

Getting Started

android: barcodescanner ios: MTBBarcodeScanner

This plugin is based on PlatformView, which means you can customize the scanning UI freely. By the way, the framing UI is limited to the native API, and only a part of the attribute customization can be provided.

How to use

class ScanPreviewPage extends StatefulWidget {
  @override
  _ScanPreviewPageState createState() => _ScanPreviewPageState();
}

class _ScanPreviewPageState extends State<ScanPreviewPage> {
  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Scan barcode example'),
        ),
        body: SizedBox(
          width: double.infinity,
          height: double.infinity,
          child: ScanPreviewWidget(
            onScanResult: (result) {
              debugPrint('scan result: $result');
              Navigator.pop(context, result);
            },
          ),
        ),
      ),
    );
  }
}

About Permission : You should request the camear permission by yourself, I use PermissionHandler to request camera permission in this example.

ios

You need to include the following Info.plist key in order to request camera access or the application will crash:

<key>NSCameraUsageDescription</key>
<string>Can we access your camera in order to scan barcodes?</string>

Important: Adding a boolean property to the Info.plist

<key>io.flutter.embedded_views_preview</key>
<Boolean>YES</string>

android

Use directly.

TODO

I am an android developer, there are still many features of ios that are not implemented.

If you are an ios developer, welcome to contribute your code.

• ✅ ios to be tested
• ❌ ios scan radar
• ❌ read code from gallery

Warning

On android device and in debug mode, the camera preview will stuck sometimes, but it did not happen in release mode.