import 'package:flutter/material.dart'; void main() { runApp(HomePage()); } class HomePage extends StatelessWidget{ @override Widget build(BuildContext context){ return MaterialApp( home: MyApp(), ); } } class MyApp extends StatefulWidget { @override _MyAppState createState()=> _MyAppState(); } class _MyAppState extends State<MyApp>{ List<Map> names = [{'NO':1,'rowcode':'rowcode1'}]; @override Widget build(BuildContext context){ return Scaffold( appBar: AppBar( title: Text('ssss'), ), body: Column( children: [ Container( child: MaterialButton( child: Text('ssss'), onPressed: ()async{ await showDialog( context: context, builder: (BuildContext context){ return StatefulBuilder( builder:(context, setState) { return SimpleDialog( title: Text('ssssssss'), children: [ Container( child: Text('sssddddddddddd'), ), Row( children: [ MaterialButton(child: Text('confirm'), onPressed: () { names[0]['qty'] = 123; names.add({ 'NO': 2, 'rowcode': 'rowcode2', 'qty': 33 }); Navigator.pop(context); // setState((){}); }, ), ], ), ], ); } ); } ).then((value) => setState((){})); }, ), ), Container( child: ListView.builder( itemCount: names.length, shrinkWrap: true, itemBuilder: (BuildContext context, int index){ return ListTile( leading: Icon(Icons.widgets), title: Text('${names[index]['NO']}'), subtitle: Text('${names[index]['rowcode']}'), trailing: Text('${names[index]['qty']}'), ); }, ), ), ], ), floatingActionButton: FloatingActionButton( child: Icon(Icons.add), onPressed: (){ setState(() { print(names); }); }, ), ); } }