i have tried this custom code but it gives me unknown error :- // Automatic FlutterFlow imports import '/actions/actions.dart' as action_blocks; import '/flutter_flow/flutter_flow_theme.dart'; import '/flutter_flow/flutter_flow_util.dart'; import '/custom_code/widgets/index.dart'; // Imports other custom widgets import '/flutter_flow/custom_functions.dart'; // Imports custom functions import 'package:flutter/material.dart'; // Begin custom widget code // DO NOT REMOVE OR MODIFY THE CODE ABOVE! import 'dart:async'; import 'package:flutter/services.dart'; import 'package:barcode_scan2/barcode_scan2.dart'; class CustomBarcodeScanner extends StatefulWidget { final Function(String) onBarcodeScanned; // Callback for scanned code final Widget child; // Widget to display within the scanning area const CustomBarcodeScanner({ Key? key, required this.onBarcodeScanned, required this.child, }) : super(key: key); @override State<CustomBarcodeScanner> createState() => _CustomBarcodeScannerState(); } class _CustomBarcodeScannerState extends State<CustomBarcodeScanner> { String _barcode = ''; Future<void> _scanBarcode() async { try { final result = await BarcodeScanner.scan(); // Improved code clarity setState(() { _barcode = result.rawContent; }); widget.onBarcodeScanned(_barcode); // Call the callback with scanned code } on PlatformException catch (e) { if (e.code == BarcodeScanner.cameraAccessDenied) { // Handle camera permission denied error } else if (e.runtimeType == PlatformException) { // Handle platform errors } } on FormatException { // Handle invalid barcode format } catch (e) { // Handle unexpected errors } } @override Widget build(BuildContext context) { return GestureDetector( onTap: _scanBarcode, // Trigger scan on tap child: Stack( children: [ widget.child, // Your desired content within the scanning area Positioned( top: 0, left: 0, right: 0, bottom: 0, child: Container( color: Colors.black.withOpacity(0.3), // Transparent overlay ), ), ], ), ); } }
what should i do to make it ineed it in an acadimec project that works in scanning the product barcode then add it to the cart in the super market to improve the shopping experience.
can any one help me in these functions .