qr 1.0.1

  • readme.md
  • Installing
  • Versions
  • 93

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 #

1.0.1 #

  • Support Dart 2 stable.

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: ^1.0.1

2. Install it

You can install packages from the command line:

with pub:

$ pub get

with Flutter:

$ flutter pub get

Alternatively, your editor might support pub get or flutter 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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Learn more about scoring.

We analyzed this package on May 8, 2019, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.3.0
  • pana: 0.12.15


Detected platforms: Flutter, web, other

No platform restriction found in primary library package:qr/qr.dart.

Maintenance suggestions

Maintain an example.

None of the files in the package's example/ directory matches known example patterns.

Common filename patterns include main.dart, example.dart, and qr.dart. Packages with multiple examples should provide example/README.md.

For more information see the pub package layout conventions.


Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.0.0-dev.17 <3.0.0
Dev dependencies
build_runner ^0.10.0
build_web_compilers ^0.4.0
test ^1.0.0