Barcode Scanner Package

A Flutter package providing a customizable and easy-to-use barcode scanner widget powered by Google ML Kit and Flutter’s camera plugin.

This package supports real-time barcode scanning with options for orientation lock, camera selection, resolution configuration, overlay customization, and performance-optimized frame processing.

Features

• Live barcode scanning using the device camera (Google ML Kit)

• Supports front and back cameras

• Optional orientation lock (portrait or landscape)

• Configurable camera resolution

• Audio enable/disable

• Frame processing throttling to improve performance

• Fully customizable scanning overlay:

• Mask color

• Border color

• Border width

• Callback with detected barcode value and type

• Supports iOS & Android

Example app included

Getting Started

Prerequisites

Flutter SDK 3.x or later

Device with camera capabilities

Google ML Kit dependencies handled automatically

Add necessary permissions:

Permissions

Android (AndroidManifest.xml)

<uses-permission android:name="android.permission.CAMERA"/>

iOS (info.plist)

<string>Camera access is required for barcode scanning.</string>

Installation

Add the package to your pubspec.yaml:

dependencies: barcode_scanner: ^0.0.1

Run:

flutter pub get

import 'package:barcode_scanner/barcode_scanner.dart';
import 'package:flutter/material.dart';
void main() {
  runApp(const MyApp());
}
class MyApp extends StatelessWidget {
  const MyApp({super.key});
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: BarcodeScannerScreen(
        orientationLock: DeviceOrientation.portraitUp,
        lensDirection: CameraLensDirection.back,
        resolutionPreset: ResolutionPreset.high,
        enableAudio: false,
        frameProcessingRate: 5,
        overlayColor: const Color.fromRGBO(0, 0, 0, 0.6),
        overlayBorderColor: Colors.green,
        overlayBorderWidth: 3.0,
        onBarcodeDetected: (code, type) {
          debugPrint('Barcode detected: $code, type: $type');
        },
      ),
    );
  }
}

Additional example code can be found in the example/ folder included with the package.

const like = 'vin_scanner';

Additional Information

• Visit the GitHub repository for documentation and updates (replace with actual URL).

• Contributions are welcome through issues or pull requests.

• When reporting issues, include:

• Flutter version

• Package version

• Device model

• Clear reproduction steps

• Licensed under the MIT License

• Advanced users may extend the controller for deeper customization