// Copyright 2014 The Flutter Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // Flutter code sample for Dismissible import 'package:flutter/material.dart'; void main() => runApp(const MyApp()); class MyApp extends StatelessWidget { const MyApp({Key? key}) : super(key: key); static const String _title = 'Flutter Code Sample'; @override Widget build(BuildContext context) { return MaterialApp( title: _title, home: Scaffold( appBar: AppBar(title: const Text(_title)), body: const MyStatefulWidget(), ), ); } } class MyStatefulWidget extends StatefulWidget { const MyStatefulWidget({Key? key}) : super(key: key); @override State<MyStatefulWidget> createState() => _MyStatefulWidgetState(); } class _MyStatefulWidgetState extends State<MyStatefulWidget> { List<int> items = List<int>.generate(100, (int index) => index); @override Widget build(BuildContext context) { return ListView.builder( itemCount: items.length, padding: const EdgeInsets.symmetric(vertical: 16), itemBuilder: (BuildContext context, int index) { return Dismissible( background: Container( color: Colors.green, ), key: ValueKey<int>(items[index]), onDismissed: (DismissDirection direction) { setState(() { items.removeAt(index); }); }, child: ListTile( title: Text( 'Item ${items[index]}', ), ), ); }, ); } }