tab_navigation_bar 1.0.5 tab_navigation_bar: ^1.0.5 copied to clipboard
Bottom navigation bar, it has unique indicator mode. When change current index then indicator move.
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:tab_navigation_bar/tab_navigation_bar.dart';
String _imageUrl =
"https://images.unsplash.com/photo-1529665253569-6d01c0eaf7b6?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxzZWFyY2h8NHx8cHJvZmlsZXxlbnwwfHwwfHx8MA%3D%3D&w=1000&q=80";
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,
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
canvasColor: const Color.fromARGB(255, 232, 232, 232),
),
home: const Home(),
);
}
}
class Home extends StatefulWidget {
const Home({Key? key}) : super(key: key);
@override
State<Home> createState() => _HomeState();
}
class _HomeState extends State<Home> {
final Color navigationBarColor = Colors.white;
int selectedIndex = 0;
late PageController pageController;
@override
void initState() {
super.initState();
pageController = PageController(
initialPage: selectedIndex,
);
}
@override
void dispose() {
pageController.dispose();
super.dispose();
}
void _onTabChanged(int index) {
setState(() {
selectedIndex = index;
});
}
@override
Widget build(BuildContext context) {
return AnnotatedRegion<SystemUiOverlayStyle>(
value: SystemUiOverlayStyle(
systemNavigationBarColor: navigationBarColor,
systemNavigationBarIconBrightness: Brightness.dark,
),
child: Scaffold(
body: PageView(
controller: pageController,
children: <Widget>[
Container(
alignment: Alignment.center,
child: const Icon(
Icons.favorite,
size: 56,
color: Colors.grey,
),
),
Container(
alignment: Alignment.center,
child: const Icon(
Icons.feed,
size: 56,
color: Colors.grey,
),
),
Container(
alignment: Alignment.center,
child: const Icon(
Icons.bookmark,
size: 56,
color: Colors.grey,
),
),
Container(
alignment: Alignment.center,
child: const Icon(
Icons.bookmark,
size: 56,
color: Colors.grey,
),
),
],
),
bottomNavigationBar: TabNavigationBar(
backgroundColor: Colors.white,
controller: pageController,
indicatorPosition: const IndicatorPosition.center(),
indicatorMode: IndicatorMode.front,
indicator: Container(
width: 35,
height: 35,
clipBehavior: Clip.antiAlias,
decoration: BoxDecoration(
color: Colors.grey.shade300,
shape: BoxShape.circle,
),
child: Image.network(
_imageUrl,
fit: BoxFit.cover,
),
),
onItemSelected: _onTabChanged,
selectedIndex: selectedIndex,
primaryColor: Colors.green,
items: [
const TabNavigationItem(
icon: Icons.favorite_outline,
),
const TabNavigationItem(
icon: Icons.feed_outlined,
),
const TabNavigationItem(
icon: Icons.bookmark_border_rounded,
),
TabNavigationItem(
useRoot: true,
/// Use for parent observer to listen
builder: (context, selected) {
return AnimatedContainer(
duration: const Duration(milliseconds: 400),
width: selected ? 40 : 32,
height: selected ? 40 : 32,
clipBehavior: Clip.antiAlias,
decoration: BoxDecoration(
color: Colors.grey.shade300,
border: Border.all(
width: 2.5,
color: selected ? Colors.green : Colors.transparent,
strokeAlign: BorderSide.strokeAlignOutside,
),
shape: BoxShape.circle,
),
child: Container(
margin: const EdgeInsets.all(2.5),
clipBehavior: Clip.antiAlias,
decoration: const BoxDecoration(
shape: BoxShape.circle,
),
child: Image.network(
_imageUrl,
fit: BoxFit.cover,
),
),
);
},
),
],
),
),
);
}
}