| // 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. |
| |
| // Template: dev/snippets/config/templates/stateful_widget_material_ticker.tmpl |
| // |
| // Comment lines marked with "▼▼▼" and "▲▲▲" are used for authoring |
| // of samples, and may be ignored if you are just exploring the sample. |
| |
| // Flutter code sample for TabBar |
| // |
| //*************************************************************************** |
| //* ▼▼▼▼▼▼▼▼ description ▼▼▼▼▼▼▼▼ (do not modify or remove section marker) |
| |
| // [TabBar] can also be implemented by using a [TabController] which provides more options |
| // to control the behavior of the [TabBar] and [TabBarView]. This can be used instead of |
| // a [DefaultTabController], demonstrated below. |
| |
| //* ▲▲▲▲▲▲▲▲ description ▲▲▲▲▲▲▲▲ (do not modify or remove section marker) |
| //*************************************************************************** |
| |
| import 'package:flutter/material.dart'; |
| |
| void main() => runApp(const MyApp()); |
| |
| /// This is the main application widget. |
| class MyApp extends StatelessWidget { |
| const MyApp({Key? key}) : super(key: key); |
| |
| static const String _title = 'Flutter Code Sample'; |
| |
| @override |
| Widget build(BuildContext context) { |
| return const MaterialApp( |
| title: _title, |
| home: MyStatefulWidget(), |
| ); |
| } |
| } |
| |
| /// This is the stateful widget that the main application instantiates. |
| class MyStatefulWidget extends StatefulWidget { |
| const MyStatefulWidget({Key? key}) : super(key: key); |
| |
| @override |
| State<MyStatefulWidget> createState() => _MyStatefulWidgetState(); |
| } |
| |
| /// This is the private State class that goes with MyStatefulWidget. |
| /// AnimationControllers can be created with `vsync: this` because of TickerProviderStateMixin. |
| class _MyStatefulWidgetState extends State<MyStatefulWidget> |
| with TickerProviderStateMixin { |
| //******************************************************************** |
| //* ▼▼▼▼▼▼▼▼ code ▼▼▼▼▼▼▼▼ (do not modify or remove section marker) |
| |
| late TabController _tabController; |
| |
| @override |
| void initState() { |
| super.initState(); |
| _tabController = TabController(length: 3, vsync: this); |
| } |
| |
| @override |
| Widget build(BuildContext context) { |
| return Scaffold( |
| appBar: AppBar( |
| title: const Text('TabBar Widget'), |
| bottom: TabBar( |
| controller: _tabController, |
| tabs: const <Widget>[ |
| Tab( |
| icon: Icon(Icons.cloud_outlined), |
| ), |
| Tab( |
| icon: Icon(Icons.beach_access_sharp), |
| ), |
| Tab( |
| icon: Icon(Icons.brightness_5_sharp), |
| ), |
| ], |
| ), |
| ), |
| body: TabBarView( |
| controller: _tabController, |
| children: const <Widget>[ |
| Center( |
| child: Text("It's cloudy here"), |
| ), |
| Center( |
| child: Text("It's rainy here"), |
| ), |
| Center( |
| child: Text("It's sunny here"), |
| ), |
| ], |
| ), |
| ); |
| } |
| |
| //* ▲▲▲▲▲▲▲▲ code ▲▲▲▲▲▲▲▲ (do not modify or remove section marker) |
| //******************************************************************** |
| |
| } |