使用TabBarView的一个选项卡包含多个方法[Flutter]

import 'package:flutter/material.dart';

class MyTabBarView extends StatefulWidget {
  @override
  _MyTabBarViewState createState() => _MyTabBarViewState();
}

class _MyTabBarViewState extends State<MyTabBarView> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('TabBarView Example'),
      ),
      body: DefaultTabController(
        length: 3, // 设置选项卡的数量
        child: Column(
          children: [
            TabBar(
              tabs: [
                Tab(text: 'Tab 1'),
                Tab(text: 'Tab 2'),
                Tab(text: 'Tab 3'),
              ],
            ),
            Expanded(
              child: TabBarView(
                children: [
                  // 在这里添加每个选项卡对应的内容
                  Container(
                    child: Center(
                      child: Text('Content for Tab 1'),
                    ),
                  ),
                  Container(
                    child: Center(
                      child: Text('Content for Tab 2'),
                    ),
                  ),
                  Container(
                    child: Center(
                      child: Text('Content for Tab 3'),
                    ),
                  ),
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }
}

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: MyTabBarView(),
    );
  }
}