bottomnavigationbar.dart

import 'package:flutter/material.dart';

class BottomNavigationBarWidget extends StatefulWidget {
  const BottomNavigationBarWidget({super.key});

  @override
  State<BottomNavigationBarWidget> createState() =>
      _BottomNavigationBarWidgetState();
}

class _BottomNavigationBarWidgetState extends State<BottomNavigationBarWidget> {
  int _currentIndex = 0;

  List<Widget> body = const [
    Icon(Icons.home),
    Icon(Icons.menu),
    Icon(Icons.person),
  ];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text("BottomNavigationBar"),
      ),
      body: Center(
        child: body[_currentIndex],
      ),
      bottomNavigationBar: BottomNavigationBar(
        currentIndex: _currentIndex,
        items: const [
          BottomNavigationBarItem(icon: Icon(Icons.home), label: 'Home'),
          BottomNavigationBarItem(icon: Icon(Icons.menu), label: 'Menu'),
          BottomNavigationBarItem(icon: Icon(Icons.person), label: 'Person')
        ],
        onTap: ((value) {
          setState(() {
            _currentIndex = value;
          });
        }),
      ),
    );
  }
}