（Flutter）Tab栏

CODE

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      theme: ThemeData(primarySwatch: Colors.deepPurple),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key}) : super(key: key);

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return DefaultTabController(
      length: 3,
      child: Scaffold(
        appBar: AppBar(
          title: Text("TabBar"),
        ),
        body: Column(
          children: [
            TabBar(
              tabs: [
                Tab(
                  icon: Icon(
                    Icons.home,
                    color: Colors.deepPurple,
                  ), //Icon
                ),
                Tab(
                  icon: Icon(
                    Icons.settings,
                    color: Colors.deepPurple,
                  ), //Icon
                ),
                Tab(
                  icon: Icon(
                    Icons.person,
                    color: Colors.deepPurple,
                  ), //Icon
                ),
              ],
            ),
            Expanded(
              child: TabBarView(
                children: [
                  Container(
                    color: Colors.deepPurple[100],
                    child: Center(
                      child: Text("Home"),
                    ),
                  ),
                  Container(
                    color: Colors.deepPurple[200],
                    child: Center(
                      child: Text("settings"),
                    ),
                  ),
                  Container(
                    color: Colors.deepPurple[300],
                    child: Center(
                      child: Text("person"),
                    ),
                  ),
                ],
              ),
            )
          ],
        ),
      ),
    );
  }
}

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