Issue
I am trying to make a Bottom Navigation Bar that looks exactly like this. Since I’m just a beginner to learn flutter, I am having a lot of problems one of which is not able to find the icons so I decided to use other similarly available icons. Now I just confused with my own code.
This is what I want:
this is how my Bottom Navigation Bar looks:
This is my code:
Scaffold(bottomNavigationBar:
Row(mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
Container(
height: 50,
width: MediaQuery.of(context).size.width / 5,
decoration: BoxDecoration(color:Color(0xfffed307)),
child: Column(
children: [
Icon(Icons.store_mall_directory_outlined),
Text('My Page')
],
),
),
Container(
height: 50,
width: MediaQuery.of(context).size.width / 5,
decoration: BoxDecoration(color: Color(0xfffed307)),
child: Column(
children: [Icon(Icons.apps), Text('Election')],
),
),
Container(
height: 50,
width: MediaQuery.of(context).size.width / 5,
decoration: BoxDecoration(color: Color(0xfffed307)),
child: Image.asset('images/scan_icon.png'),
),
Container(
height: 50,
width: MediaQuery.of(context).size.width / 5,
decoration: BoxDecoration(color: Color(0xfffed307)),
child: Column(
children: [Icon(Icons.apps), Text('Add Election')],
),
),
Expanded(
child: Container(
height: 50,
width: MediaQuery.of(context).size.width / 5,
decoration: BoxDecoration(color: Color(0xfffed307)),
child: Column(
children: [Icon(Icons.groups_outlined), Text('Customer')],
),
),
),
],
)
,);
Solution
With Flutter, to make this kind of UI is easy peasy)) Use Positioned Widget inside Stack Widget if you really wanna make this UI using bottomNavigationBar property of Scaffold Widget.
Result UI
Copy and paste the code below to see the effect:
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
// This is the theme of your application.
//
// Try running your application with "flutter run". You'll see the
// application has a blue toolbar. Then, without quitting the app, try
// changing the primarySwatch below to Colors.green and then invoke
// "hot reload" (press "r" in the console where you ran "flutter run",
// or simply save your changes to "hot reload" in a Flutter IDE).
// Notice that the counter didn't reset back to zero; the application
// is not restarted.
primarySwatch: Colors.blue,
),
home: MyScreen(),
);
}
}
class MyScreen extends StatefulWidget {
const MyScreen({Key? key}) : super(key: key);
@override
_MyScreenState createState() => _MyScreenState();
}
class _MyScreenState extends State<MyScreen> {
late List<Widget> _screens;
int currentIndex = 0;
@override
void initState() {
super.initState();
_screens = [
TestScreen(title: '1st Screen'),
TestScreen(title: '2nd Screen'),
TestScreen(title: '3rd Screen'),
TestScreen(title: '4th Screen'),
TestScreen(title: '5th Screen'),
];
}
@override
Widget build(BuildContext context) {
return Scaffold(
body: IndexedStack(
index: currentIndex,
children: _screens,
),
bottomNavigationBar: BottomBar(
selectedIndex: currentIndex,
children: [
BottomBarItem(icon: Icons.home),
BottomBarItem(icon: Icons.search),
BottomBarItem(icon: Icons.favorite),
BottomBarItem(icon: Icons.person),
],
onMainPressed: () {
setState(() {
currentIndex = 4;
});
},
onPressed: (index) {
setState(() {
currentIndex = index;
});
},
),
);
}
}
class BottomBarItem {
BottomBarItem({required this.icon});
IconData icon;
}
class BottomBar extends StatelessWidget {
final List<BottomBarItem> children;
final Function? onPressed;
final Function? onMainPressed;
final selectedIndex;
BottomBar({
this.children = const [],
this.onPressed,
this.onMainPressed,
this.selectedIndex,
});
@override
Widget build(BuildContext context) {
Size size = MediaQuery.of(context).size;
return Container(
color: Colors.grey[100],
child: SafeArea(
bottom: true,
child: Container(
height: 60,
decoration: BoxDecoration(
color: Colors.grey[100],
boxShadow: [
BoxShadow(
color: Colors.grey,
blurRadius: 8.0,
offset: Offset(
0.0, // horizontal, move right 10
-6.0, // vertical, move down 10
),
),
],
),
child: Stack(
clipBehavior: Clip.none,
children: [
Row(
crossAxisAlignment: CrossAxisAlignment.stretch,
mainAxisAlignment: MainAxisAlignment.center,
children: children.map<Widget>(
(item) {
int index = children.indexOf(item);
bool isSelected = selectedIndex == index;
return Expanded(
child: Material(
color: Colors.transparent,
child: InkWell(
onTap: () {
onPressed!(index);
},
child: Padding(
padding: EdgeInsets.zero,
child: Icon(
item.icon,
size: isSelected ? 35 : 30,
color: isSelected ? Colors.blue : Colors.grey,
),
),
),
),
);
},
).toList()
..insert(2, SizedBox(width: 80)),
),
Positioned(
top: -14,
width: size.width,
child: Center(
child: Container(
height: 60,
width: 60,
child: ClipOval(
child: Material(
color: selectedIndex == 4 ? Colors.blue : Colors.grey,
child: InkWell(
onTap: () {
onMainPressed!();
},
child: Center(
child: Icon(
Icons.adb,
size: 27,
color: Colors.white,
),
),
),
),
),
decoration: BoxDecoration(
shape: BoxShape.circle,
boxShadow: [
BoxShadow(
color: Colors.grey,
blurRadius: 6.0,
),
],
),
),
),
),
],
),
),
),
);
}
}
class TestScreen extends StatelessWidget {
final String title;
const TestScreen({required this.title, Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: Container(
child: Text(title),
)),
);
}
}
Answered By – RuslanBek
Answer Checked By – Mildred Charles (FlutterFixes Admin)