| // 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 Stepper |
| |
| import 'package:flutter/material.dart'; |
| |
| void main() => runApp(const MyApp()); |
| |
| class MyApp extends StatelessWidget { |
| const MyApp({super.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 Center( |
| child: MyStatefulWidget(), |
| ), |
| ), |
| ); |
| } |
| } |
| |
| class MyStatefulWidget extends StatefulWidget { |
| const MyStatefulWidget({super.key}); |
| |
| @override |
| State<MyStatefulWidget> createState() => _MyStatefulWidgetState(); |
| } |
| |
| class _MyStatefulWidgetState extends State<MyStatefulWidget> { |
| int _index = 0; |
| |
| @override |
| Widget build(BuildContext context) { |
| return Stepper( |
| currentStep: _index, |
| onStepCancel: () { |
| if (_index > 0) { |
| setState(() { |
| _index -= 1; |
| }); |
| } |
| }, |
| onStepContinue: () { |
| if (_index <= 0) { |
| setState(() { |
| _index += 1; |
| }); |
| } |
| }, |
| onStepTapped: (int index) { |
| setState(() { |
| _index = index; |
| }); |
| }, |
| steps: <Step>[ |
| Step( |
| title: const Text('Step 1 title'), |
| content: Container( |
| alignment: Alignment.centerLeft, |
| child: const Text('Content for Step 1')), |
| ), |
| const Step( |
| title: Text('Step 2 title'), |
| content: Text('Content for Step 2'), |
| ), |
| ], |
| ); |
| } |
| } |