QR Code In Flutter :
This flutter tutorial post is QR Code In Flutter generate from String or images. It is a fast QR code generate.
Properties :
- embeddedImage: AssetImage(‘assets/images/’),
- gapless: true or false
- size: integer
- version: QrVersions.auto as well as supported 1 – 40.
- data: Generate QR code from string.
- embeddedImageStyle: QrEmbeddedImageStyle(size: Size(80, 80))
Advantage :
- Supports QR code versions 1 – 40
- Error correction / redundancy
- Configurable output size, padding, background and foreground colors
- Supports image overlays
- Export to image data to save to file or use in memory
- No internet connection required
Add the dependenci in pubspec.yaml.
- dependencies:
- qr_flutter:
Screenshot :

Program
import 'package:flutter/material.dart'; import 'package:qr_flutter/qr_flutter.dart'; import 'screen/page/ChipListPage.dart'; void main() => runApp(MyApp()); class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( title: 'Flutter Tutorial', debugShowCheckedModeBanner: false, home: MyHomePage(title: 'ChipList Flutter'), ); } } class MyHomePage extends StatefulWidget { MyHomePage({Key key, this.title}) : super(key: key); final String title; @override _MyHomePageState createState() => _MyHomePageState(); } class _MyHomePageState extends State<MyHomePage> { @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar(title: Text('QR Code Flutter')), body: Center( child: Container( child: Stack(alignment: Alignment(0, 0), children: <Widget>[ // Gradient Container( width: 198, height: 198, decoration: BoxDecoration( borderRadius: BorderRadius.circular(12), gradient: LinearGradient( begin: Alignment.bottomLeft, end: Alignment.topRight, stops: [0.0, 1], colors: [Colors.blue, Colors.blue], ))), // overlay Container( width: 189, height: 189, decoration: BoxDecoration( borderRadius: BorderRadius.circular(8), color: Colors.white), ), // QR Code QrImage( data: '123', size: 198, errorCorrectionLevel: QrErrorCorrectLevel.Q, gapless: false, version: 9, ), // Logo background Container( width: 64, height: 64, decoration: BoxDecoration( borderRadius: BorderRadius.circular(16), color: Colors.white), ), // Logo Container( width: 53, height: 53, decoration: BoxDecoration( borderRadius: BorderRadius.circular(12), gradient: LinearGradient( begin: Alignment.bottomLeft, end: Alignment.topRight, stops: [0.0, 1], colors: [Color(0xFFF7941F), Colors.blue], )), child: Icon(Icons.home, color: Colors.white, size: 33), ) ])))); } }
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