Future<void> _scanBarcode() async{final barcodes =awaitNavigator.push<List<Barcode>>( context, MaterialPageRoute( builder: (context) =>constScanAndPopPageExample(), ), ); if (barcodes ==null) return; showBarcodeListDialog(context, barcodes); // show barcode list dialog to display barcode. }

import'package:flutter/material.dart'; import'package:scan_barcode/scan_barcode.dart'; classScanAndPopPageExampleextendsStatefulWidget{constScanAndPopPageExample({Key? key}) :super(key: key); @overrideState<ScanAndPopPageExample> createState() =>_ScanAndPopPageExampleState()} class_ScanAndPopPageExampleStateextendsState<ScanAndPopPageExample>{var isPop =false; @overrideWidgetbuild(BuildContext context){returnBarcodeWidget( onHandleBarcodeList: (List<Barcode> barcode) async{if (isPop){// Prevent multiple popreturn} if (barcode.isEmpty) return; isPop =true; Navigator.of(context).pop(barcode)}, scanValue:ScanValue(), )} } 

import'package:flutter/material.dart'; import'package:flutter/services.dart'; import'package:scan_barcode/scan_barcode.dart'; classShowDialogExampleextendsStatelessWidget{constShowDialogExample({Key? key, }) :super(key: key); @overrideWidgetbuild(BuildContext context){returnBarcodeScanPage( title:'Show dialog when scanned', onHandleBarcodeList: (List<Barcode> barCode) async{if (barCode.isEmpty) return; awaitshowBarcodeListDialog( context, barCode); // The await is important, if you don't await, multiple dialogs will be shown. }, )} Future<void> showBarcodeListDialog(BuildContext context, List<Barcode> barCode) async{awaitshowDialog( context: context, builder: (context) =>AlertDialog( title:constText('Barcode list'), content:Column( mainAxisSize:MainAxisSize.min, children: [ for (final barcode in barCode) ListTile( title:Text(barcode.rawValue ??''), subtitle:Text('type: ${barcode.type}, format: ${barcode.format}'), trailing:IconButton( icon:constIcon(Icons.copy), onPressed: (){Clipboard.setData( ClipboardData(text: barcode.rawValue ??''), )}, ), ), ], ), actions: [ ElevatedButton( onPressed: (){Navigator.of(context).pop()}, child:constText('OK'), ), ], ), )} }