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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