in_app_scanner

A Flutter widget for barcode scanning and image capturing using a single camera.

Features

• Capture images using the device's camera.
• Scan barcodes from captured images.
• Display the captured barcode result.

Getting started

Prerequisites

• Flutter SDK installed on your machine.
• Device with a camera (physical device recommended for testing).

Installation

Add the following dependencies to your pubspec.yaml file:

dependencies:
  flutter:
    sdk: flutter
  in_app_scanner: ^1.0.0 #use latest version

Run flutter pub get to install the dependencies.

Usage

Create a new widget by extending InAppScannerBuilder:

import 'package:flutter/material.dart';
import 'package:in_app_scanner/in_app_scanner.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      title: 'Flutter Demo',
      home: _Page(),
    );
  }
}

class _Page extends StatelessWidget {
  const _Page();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: ElevatedButton(
          onPressed: () {
            Navigator.push(
              context,
              MaterialPageRoute(
                builder: (_) {
                  return const _Scanner();
                },
              ),
            );
          },
          child: const Text("Scan"),
        ),
      ),
    );
  }
}

class _Scanner extends StatelessWidget {
  const _Scanner();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: InAppScannerBuilder(
        controller: InAppScannerController(),
        autoInitMode: true,
        autoDisposeMode: true,
        builder: (context, controller) {
          return ListenableBuilder(
            listenable: controller,
            builder: (context, child) {
              if (controller.isCameraInitialized) {
                return Column(
                  children: [
                    Expanded(
                      child: InAppScannerView(
                        controller: controller,
                      ),
                    ),
                  ],
                );
              } else {
                return const Center(
                  child: CircularProgressIndicator(),
                );
              }
            },
          );
        },
      ),
    );
  }
}

The InAppScannerBuilder widget provides the functionality to capture and scan barcodes and the InAppScannerView widget provides the camera preview

Additional information

For more information on how to contribute to the package, file issues, or seek support, please visit the GitHub repository.

Contributions are welcome! Feel free to submit pull requests or file issues.