BottomNavigationBar 사용

링크텍스트

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const MyHomePage(title: 'TO DO'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

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

class _MyHomePageState extends State<MyHomePage> {
  int _selectedIndex = 0;
  int id = 0;

  void _onItemTapped(int index) {
    setState(() {
      _selectedIndex = index;
    });
  }

  static const TextStyle optionStyle =
      TextStyle(fontSize: 10, fontWeight: FontWeight.bold);

  static const List<Widget> _widgetOptions = <Widget>[
    Text(
      'Index 0: Home',
      // style: optionStyle,
    ),
    Text(
      'Index 1: Business',
      // style: optionStyle,
    ),
    Text(
      'Index 2: School',
      // style: optionStyle,
    ),
  ];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(widget.title),
      ),
      body: ListView(
        padding: const EdgeInsets.all(10),
        children: [
          const Text(
            "오늘 하루",
            style: TextStyle(color: Colors.green, fontWeight: FontWeight.bold),
          ),
          Container(
            height: 10,
          ),
          const Text(
            "TO DOs",
            style: TextStyle(color: Colors.cyan),
          ),
          Container(
            height: 10,
          ),
          const Text(
            "완료된 하루",
            style: TextStyle(color: Colors.grey, fontWeight: FontWeight.bold),
          )
        ],
      ),
      bottomNavigationBar: BottomNavigationBar(
        items: const [
          BottomNavigationBarItem(
              icon: Icon(Icons.today_outlined), label: "오늘"),
          BottomNavigationBarItem(
              icon: Icon(Icons.assignment_outlined), label: "기록"),
          BottomNavigationBarItem(icon: Icon(Icons.more_horiz), label: "더보기"),
        ],
        currentIndex: _selectedIndex,
        selectedItemColor: Colors.amber[800],
        onTap: _onItemTapped,
      ),
    );
  }
}