qr

Description:

qr

A QR code generation library for Dart and Flutter.



Features #

Supports QR code versions 1 - 40
Error correction / redundancy

Getting started #
To start, import the dependency in your code:
import 'package:qr/qr.dart';
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To build your QR code data you should do so as such:
final qrCode = QrCode(4, QrErrorCorrectLevel.L)
..addData('Hello, world in QR form!');
final qrImage = QrImage(qrCode);
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Now you can use your qrImage instance to render a graphical representation of
the QR code. A basic implementation would be as such:
for (var x = 0; x < qrImage.moduleCount; x++) {
for (var y = 0; y < qrImage.moduleCount; y++) {
if (qrImage.isDark(y, x)) {
// render a dark square on the canvas
}
}
}
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See the example directory for further details.
Pre-made UI libraries #
The following libraries use qr.dart to generate QR codes for you out of the box:
qr_flutter - A Flutter Widget to render
QR codes
barcode - A package that supports many types
of scannable codes, include QR.
Demo #
A working demo can be found here:
kevmoo.github.io/qr.dart