qr 1.0.0

  • readme.md
  • Installing
  • Versions
  • 43

A QR code generation library for Dart and Flutter.

Build Status

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';

To build your QR code data you should do so as such:

final qrCode = new QrCode(4, QrErrorCorrectLevel.L);
qrCode.addData("Hello, world in QR form!");

Now you can use your _qrCode instance to render a graphical representation of the QR code. A basic implementation would be as such:

for (int x = 0; x < qrCode.moduleCount; x++) {
  for (int y = 0; y < qrCode.moduleCount; y++) {
    if (qrCode.isDark(y, x)) {
      // render a dark square on the canvas

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

Demo #

A working demo can be found here: https://kevmoo.github.io/qr.dart/

Authors #

1.0.0 #

  • Require at least Dart SDK 2.0.0-dev.17.
  • Fixed a subtle bug with number handling.

0.1.0+2 #

  • Update README to include basic documentation
  • Update pubspec.yaml description

0.1.0+1 #

  • Fix author email.

0.1.0 #

  • Initial release.

Use this package as a library

1. Depend on it

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

  qr: ^1.0.0

2. Install it

You can install packages from the command line:

with pub:

$ pub get

Alternatively, your editor might support pub get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

import 'package:qr/qr.dart';
Version Uploaded Documentation Archive
1.1.1 May 16, 2019 Go to the documentation of qr 1.1.1 Download qr 1.1.1 archive
1.1.0 May 3, 2019 Go to the documentation of qr 1.1.0 Download qr 1.1.0 archive
1.0.1 Aug 8, 2018 Go to the documentation of qr 1.0.1 Download qr 1.0.1 archive
1.0.0 Apr 11, 2018 Go to the documentation of qr 1.0.0 Download qr 1.0.0 archive
0.1.0+2 Mar 4, 2018 Go to the documentation of qr 0.1.0+2 Download qr 0.1.0+2 archive
0.1.0+1 Mar 3, 2018 Go to the documentation of qr 0.1.0+1 Download qr 0.1.0+1 archive
0.1.0 Mar 3, 2018 Go to the documentation of qr 0.1.0 Download qr 0.1.0 archive
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The package version is not analyzed, because it does not support Dart 2. Until this is resolved, the package will receive a health and maintenance score of 0.

Analysis issues and suggestions

Support Dart 2 in pubspec.yaml.

The SDK constraint in pubspec.yaml doesn't allow the Dart 2.0.0 release. For information about upgrading it to be Dart 2 compatible, please see https://dart.dev/dart-2#migration.

Maintenance issues and suggestions

Make sure dartdoc successfully runs on your package's source files. (-10 points)

Dependencies were not resolved.


Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.0.0-dev.17 <2.0.0