Answers for "flutter custom bottom navigation bar"

bottomnavigationbar flutter

bottomNavigationBar: BottomNavigationBar(
          type: BottomNavigationBarType.fixed,
          items: [
            BottomNavigationBarItem(
            icon: Icon(Icons.home),
            label: 'Home',
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.business),
            label: 'Business',
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.school),
            label: 'School',
          ),
          ],
        ),

flutter bottom navigation bar

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Title of Application',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(),
    );
  }
}

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

  @override
  State<StatefulWidget> createState() {
    return MyHomePageState();
  }

}

class MyHomePageState extends State<MyHomePage> {
  int selectedIndex = 0;
  Widget _myContacts = MyContacts();
  Widget _myEmails = MyEmails();
  Widget _myProfile = MyProfile();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("BottomNavigationBar Example"),
      ),
      body:  this.getBody(),
      bottomNavigationBar: BottomNavigationBar(
        type: BottomNavigationBarType.fixed,
        currentIndex: this.selectedIndex,
        items: [
          BottomNavigationBarItem(
            icon: Icon(Icons.contacts),
            title: Text("Contacts"),
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.mail),
            title: Text("Emails"),
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.person),
            title: Text("Profile"),
          )
        ],
        onTap: (int index) {
          this.onTapHandler(index);
        },
      ),
    );
  }

  Widget getBody( )  {
    if(this.selectedIndex == 0) {
      return this._myContacts;
    } else if(this.selectedIndex==1) {
      return this._myEmails;
    } else {
      return this._myProfile;
    }
  }

  void onTapHandler(int index)  {
    this.setState(() {
      this.selectedIndex = index;
    });
  }
}

class MyContacts extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Center(child: Text("Contacts"));
  }
}

class MyEmails extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Center(child: Text("Emails"));
  }
}

class MyProfile extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Center(child: Text("Profile"));
  }
}

flutter bottom navigation bar

import 'package:authwithrest/bloc/auth_bloc/auth.dart';
import 'package:eva_icons_flutter/eva_icons_flutter.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:authwithrest/style/theme.dart' as Style;
import 'package:flutter_staggered_animations/flutter_staggered_animations.dart';

import 'package:authwithrest/screens/main_screen/home_screen.dart';

class MainScreen extends StatefulWidget {
  @override
  _MainScreenState createState() => _MainScreenState();
}

class _MainScreenState extends State<MainScreen> {
  int _selectedIndex = 0;

  static const TextStyle optionStyle =
      TextStyle(fontSize: 30, fontWeight: FontWeight.bold);
  static const List<Widget> _widgetOptions = [
    HomeScreen(),
    Text('Ikkinchi', style: optionStyle),
    Text('Uchinchi', style: optionStyle),
    Text('Oxirgi', style: optionStyle),
  ];

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Style.Colors.mainColor,
        title: Text("Money Managaer"),
        actions: [
          IconButton(
              icon: Icon(EvaIcons.logOutOutline),
              onPressed: () {
                BlocProvider.of<AuthenticationBloc>(context).add(
                  LoggedOut(),
                );
              })
        ],
      ),
      body: AnimationLimiter(
        child: _widgetOptions.elementAt(_selectedIndex),
      ),
      floatingActionButton: FloatingActionButton(
        child: const Icon(Icons.add),
        backgroundColor: Colors.blue,
        hoverElevation: 50,
        onPressed: () {
          // Add your onPressed code here!
        },
      ),
      floatingActionButtonLocation: FloatingActionButtonLocation.centerDocked,
      bottomNavigationBar: BottomAppBar(
        notchMargin: 5,
        shape: CircularNotchedRectangle(),
        color: Colors.white,
        child: BottomNavigationBar(
          elevation: 0,
          backgroundColor: Colors.transparent,
          items: [
            BottomNavigationBarItem(
              icon: Icon(Icons.cloud),
              title: Text("Logs"),
            ),
            BottomNavigationBarItem(
              icon: Icon(Icons.book),
              title: Text("Education"),
            ),
          ],
        ),
      ),
    );
  }
}

flutter bottom navigation bar four items

bottomNavigationBar: BottomNavigationBar(
  type: BottomNavigationBarType.fixed, // This is all you need!
  items: // ...,
)