import 'package:flutter/material.dart';

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

  @override
  Widget build(BuildContext context) {
    return Container();
  }
}

---------------------------------------------

import 'package:flutter/material.dart';
import 'package:flutter_application/home_page.dart';


void main() {
  runApp(const 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.blue),
      home: RootPage(),
    );
  }
}

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

  @override
  State<RootPage> createState() => _RootPageState();
}

class _RootPageState extends State<RootPage> {
  int currentPage = 0;
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('My First App')),
      body: const HomePage(),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          debugPrint('Button pressed');
        },
        child: const Icon(Icons.add),
      ),
      bottomNavigationBar: NavigationBar(
        destinations: const[
          NavigationDestination(icon: Icon(Icons.home), label: 'Home'),
          NavigationDestination(icon: Icon(Icons.person), label: 'Profile'),
        ],
        onDestinationSelected: (int index){
          setState((){
            currentPage = index;
          });
        },
        selectedIndex: currentPage,
      ),
    );
  }
}