Bottom navigation

import 'package:flutter/material.dart';

class HomePage extends StatefulWidget {
  @override
  _HomePageState createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  final List<Widget> _children = [
    HomeContent(),
    Container(
      alignment: Alignment.center,
      child: Text("This is second screen", style: TextStyle(fontSize: 30),),
    ),
    Container(
      alignment: Alignment.center,
      child: Text("This is third screen", style: TextStyle(fontSize: 30),),
    ),
  ];

  int _currentIndex = 0;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: _children[_currentIndex],
      bottomNavigationBar: BottomNavigationBar(
        fixedColor: Color(0xFFb30000),
        currentIndex: _currentIndex,
        onTap: (int index) {
          setState(() {
            _currentIndex = index;
          });
        },
        items: [
          BottomNavigationBarItem(
              icon: Icon(Icons.home), title: Text("Acceuil")),
          BottomNavigationBarItem(
              icon: Icon(Icons.wb_cloudy), title: Text("Météo")),
          BottomNavigationBarItem(
              icon: Icon(Icons.new_releases), title: Text("#Lactu")),
        ],
      ),
    );
  }
}

class HomeContent extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return SafeArea(
      child: ListView(
        children: <Widget>[
          Container(
            padding: EdgeInsets.all(16.0),
            child: Row(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: <Widget>[
                Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: <Widget>[
                    Text(
                      "      Whyte Plage",
                      style: TextStyle(
                        fontSize: 32.0,
                        fontWeight: FontWeight.bold,
                        color: Color(0xFFb30000),
                      ),
                    ),
                  ],
                ),
              ],
            ),
          ),
          SizedBox(height: 30),
          Container(
            child: Padding(
              padding: const EdgeInsets.symmetric(),
              child: Container(
                width: 550.0,
                height: 140.0,
                decoration: BoxDecoration(
                  image: DecorationImage(
                      fit: BoxFit.cover,
                      image: NetworkImage(
                          'https://www.airfrance.fr/FR/common/common/img/tbaf/news/RBA/skhirat-l-une-des-plus-belles-plages-du-monde/RBA-skhirat-l-une-des-plus-belles-plages-du-monde-2_1-1280x640.jpg')),
                  borderRadius: BorderRadius.all(Radius.circular(26.0)),
                ),
              ),
            ),
          ),
          SizedBox(height: 20),
          Container(
            padding: EdgeInsets.only(left: 16.0, right: 16.0, bottom: 8.0),
            child: Material(
              elevation: 5.0,
              child: TextField(
                decoration: InputDecoration(
                    hintText: "Rechercher(Plages,Services...)",
                    prefixIcon:
                    Icon(Icons.location_on, color: Color(0xFFb30000)),
                    border: InputBorder.none),
                cursorColor: Color(0xFFb30000),
              ),
            ),
          ),
          SizedBox(height: 20),
          FloatingActionButton(
            onPressed: () {},
            tooltip: 'choisir une image',
            child: Icon(Icons.add_a_photo),
          ),
        ],
      ),
    );
  }
}