zxing_widget

Package Overview

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zxing_widget is a Flutter package that provides a customizable barcode generator widget, leveraging zxing-dart for cross-platform compatibility. It enables developers to embed dynamic barcodes and QR codes directly into their Flutter applications across Android, iOS, Web, macOS, Windows, and Linux. The widget supports various barcode formats and integrates seamlessly with existing UIs. It's ideal for apps requiring on-the-fly barcode generation, such as ticketing systems, inventory management, or digital identity solutions.

Use cases

Generating QR codes for digital tickets
Creating product barcodes in inventory apps
Embedding scannable codes in user profiles
Supporting offline barcode generation
Enabling quick data sharing via QR codes

Key features

Cross-platform barcode generation
Integration with zxing-dart engine
Customizable barcode size and style
Support for multiple barcode formats
Lightweight and easy to embed

Suitable for

Mobile and web apps needing barcode output
Developers building inventory or ticketing systems
Apps requiring offline code generation
Flutter projects targeting multiple platforms

Considerations

Requires proper handling of permissions on mobile platforms
May need additional styling for optimal visual appearance
Limited to generating barcodes, not scanning them
Depends on zxing-dart for underlying functionality

Original README

Original README snapshot from the linked source repository. Visit the repository for the latest content.

ZXing Widget(Dart)

A Barcode Generator Widget that can be embedded inside flutter. It uses zxing-dart for all platforms.


ZXing Dart
ZXing Widget
ZXing Scanner

Features

✅ QRCode
✅ PDF417 code
✅ DataMatrix code
✅ AZTec code
✅ OneDemension code
✅ Paint callback
✅ Customize color
✅ to image

Preview

Getting started

flutter pub add zxing_widget

Usage

See /example folder.

Render a qrcode

BarcodeWidget(
    QrcodePainter(
        'qrcode data',
        errorCorrectionLevel: ErrorCorrectionLevel.H,
        foregroundColor: Colors.blue,
    ),
    size: const Size(200, 200),
),

Generate an image

import 'dart:ui' as ui;

final ui.Image image = QrcodePainter(
        'qrcode data',
        errorCorrectionLevel: ErrorCorrectionLevel.H,
        foregroundColor: Colors.blue,
    ).toImage(const Size(200, 200));

// binary png data
final binData = await image.toByteData(format: ui.ImageByteFormat.png);

Additional information

This package depends on zxing_lib witch is a pure dart port of ZXing.

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