The Flutter plugin for iOS and Android to decoding QR codes.

First, add qr_code_tools as a dependency in your pubspec.yaml file.

Add one rows to the ios/Runner/Info.plist:

• one with the key Privacy - Photo Library Usage Description and a usage description.

Or in text format add the key:

<key>NSPhotoLibraryUsageDescription</key>
<string>Can I use the photo library please?</string>

Nothing to do

import 'package:qr_code_tools/qr_code_tools.dart';

String _data;

/// decode from local file
Future decode(String file) async {
  String data = await QrCodeToolsPlugin.decodeFrom(file);
  setState(() {
    _data = data;
  });
}

For a more elaborate usage example see here.