## Features - Scan QR codes and barcodes from the camera stream (on mobile platforms only), image file or URL - Scan multiple barcodes at once from the camera stream (on mobile platforms only), image file or URL - Generate QR codes with customizable content and size - Return the position points of the scanned barcode - Customizable scanner frame size and color, and ability to enable or disable features like torch and pinch to zoom ## Supported Formats | Linear product | Linear industrial | Matrix | |----------------|-------------------|--------------------| | UPC-A | Code 39 | QR Code | | UPC-E | Code 93 | Micro QR Code | | EAN-8 | Code 128 | Aztec | | EAN-13 | Codabar | DataMatrix | | DataBar | DataBar Expanded | PDF417 | | | ITF | MaxiCode (partial) | ## Supported platforms Flutter ZXing supports the following platforms: - Android (minimum API level 21) - iOS (minimum iOS 11.0) - MacOS (minimum osx 10.15) (beta) - Linux (beta) - Windows (beta) Note that flutter_zxing relies on the Dart FFI (Foreign Function Interface) feature, which is currently only available for the mobile and desktop platforms. As a result, the plugin is not currently supported on the web platform. In addition, flutter_zxing uses the camera plugin to access the device's camera for scanning barcodes. This plugin is only supported on mobile platforms, and is not available for desktop platforms. Therefore, some features of flutter_zxing, such as scanning barcodes using the camera, are not available on desktop platforms. ## Getting Started ### To read barcode ```dart import 'package:flutter_zxing/flutter_zxing.dart'; // Use ReaderWidget to quickly read barcode from camera image @override Widget build(BuildContext context) { return Scaffold( body: ReaderWidget( onScan: (result) async { // Do something with the result }, ), ), ); // Or use flutter_zxing plugin methods // To read barcode from camera image directly await zx.startCameraProcessing(); // Call this in initState cameraController?.startImageStream((image) async { Code result = await zx.processCameraImage(image); if (result.isValid) { debugPrint(result.text); } return null; }); zx.stopCameraProcessing(); // Call this in dispose // To read barcode from XFile, String, url or Uint8List bytes XFile xFile = XFile('Your image path'); Code? resultFromXFile = await zx.readBarcodeImagePath(xFile); String path = 'Your local image path'; Code? resultFromPath = await zx.readBarcodeImagePathString(path); String url = 'Your remote image url'; Code? resultFromUrl = await zx.readBarcodeImageUrl(url); Uint8List bytes = Uint8List.fromList(yourImageBytes); Code? resultFromBytes = await zx.readBarcode(bytes); ``` ### To create barcode ```dart import 'package:flutter_zxing/flutter_zxing.dart'; import 'dart:typed_data'; import 'package:image/image.dart' as imglib; // Use WriterWidget to quickly create barcode @override Widget build(BuildContext context) { return Scaffold( body: WriterWidget( onSuccess: (result, bytes) { // Do something with the result }, onError: (error) { // Do something with the error }, ), ), ); // Or use FlutterZxing to create barcode directly final Encode result = zx.encodeBarcode( contents: 'Text to encode', params: EncodeParams( format: Format.QRCode, width: 120, height: 120, margin: 10, eccLevel: EccLevel.low, ), ); if (result.isValid) { final img = imglib.Image.fromBytes(width, height, result.data); final encodedBytes = Uint8List.fromList(imglib.encodeJpg(img)); // use encodedBytes as you wish } ``` ## License MIT License. See [LICENSE](https://github.com/khoren93/flutter_zxing/blob/master/LICENSE).
