persistent_bottom_nav_bar 1.5.5

A DO ALL persistent/static bottom navigation bar for flutter. In addition to being optionally platform specific, it includes more than 10 styles including neumorphic design.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:persistent_bottom_nav_bar/persistent-tab-view.dart';
import 'custom-widget.dart';
import 'screens.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Persistent Bottom Navigation Bar example project',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

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

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  PersistentTabController _controller;

  @override
  void initState() {
    super.initState();
    _controller = PersistentTabController(initialIndex: 0);
  }

  List<Widget> _buildScreens() {
    return [
      HomeScreen(),
      HomeScreen(),
      HomeScreen(),
      HomeScreen(),
    ];
  }

  List<PersistentBottomNavBarItem> _navBarsItems() {
    return [
      PersistentBottomNavBarItem(
        icon: Icon(Icons.home),
        title: ("Home"),
        activeColor: Colors.blue,
        inactiveColor: Colors.grey,
        isTranslucent: false,
      ),
      PersistentBottomNavBarItem(
        icon: Icon(Icons.search),
        title: ("Search"),
        activeColor: Colors.teal,
        inactiveColor: Colors.grey,
        isTranslucent: false,
      ),
      PersistentBottomNavBarItem(
        icon: Icon(Icons.message),
        title: ("Chat"),
        activeColor: Colors.deepOrange,
        inactiveColor: Colors.grey,
        isTranslucent: false,
      ),
      PersistentBottomNavBarItem(
        icon: Icon(Icons.settings),
        title: ("Settings"),
        activeColor: Colors.indigo,
        inactiveColor: Colors.grey,
        isTranslucent: false,
      ),
    ];
  }

  @override
  Widget build(BuildContext context) {
    return PersistentTabView(
        controller: _controller,
        screens: _buildScreens(),
        items:
            _navBarsItems(), // Redundant here but defined to demonstrate for other than custom style
        confineInSafeArea: true,
        backgroundColor: Colors.white,
        handleAndroidBackButtonPress: true,
        onItemSelected: (int) {
          setState(
              () {}); // This is required to update the nav bar if Android back button is pressed
        },
        customWidget: CustomNavBarWidget(
          items: _navBarsItems(),
          onItemSelected: (index) {
            setState(() {
              _controller.index = index; // THIS IS CRITICAL!! Don't miss it!
            });
          },
          selectedIndex: _controller.index,
        ),
        itemCount: 4,
        navBarStyle:
            NavBarStyle.custom // Choose the nav bar style with this property
        );
  }
}