I am trying to add a Floating Action Button in the middle of the Bottom Navigation bar. Problem is border is not appearing and also margin in Floating Action Button and icons not according to my requirement.
Here is a picture of the issue. Achieved Image
Here is a picture what I want Required Image
Code
bottomNavigationBar: SafeArea(child: _buildBottomBar(context)),
floatingActionButtonLocation: FloatingActionButtonLocation.centerDocked,
floatingActionButton: CircularGradientButton(
tooltip: 'Increment',
child: new Image.asset(UIData.cameraIcon),
gradient: LinearGradient(colors: <Color>[
Color.fromARGB(255, 17, 153, 142),
Color.fromARGB(255, 56, 239, 125)
]),
callback: () => openCamera(),
//_optionsDialogBox(),
elevation: 2.0,
),
Widget _buildBottomBar(BuildContext context) {
return Material(
color: Colors.white,
child: TabBar(
isScrollable: false,
unselectedLabelColor: Colors.white.withOpacity(0.3),
indicatorColor: Colors.white,
tabs: <Tab>[
new Tab(
// set icon to the tab
icon: Image.asset(
_tabController.index == 0 ? UIData.mapIconActive : UIData.mapIcon,
width: 30,
height: 30,
),
),
new Tab(
icon: Image.asset(
_tabController.index == 1
? UIData.listingIconActive
: UIData.listingIcon,
width: 30,
height: 30,
),
),
new Tab(
icon: Image.asset(
_tabController.index == 2
? UIData.messageIconActive
: UIData.messageIcon,
width: 30,
height: 30,
),
),
new Tab(
icon: Image.asset(
_tabController.index == 3
? UIData.settingsIconActive
: UIData.settingsIcon,
width: 30,
height: 30,
),
),
],
controller: _tabController,
),
);
}
There are many possible solutions, one of them is to add padding and border.
import 'package:charts_flutter/flutter.dart' as prefix0;
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: Scaffold(
backgroundColor: Colors.blueAccent,
floatingActionButton: Padding(
padding: EdgeInsets.only(top: 20),
child: SizedBox(
height: 70,
width: 70,
child: FloatingActionButton(
backgroundColor: Colors.transparent,
elevation: 0,
onPressed: () {},
child: Container(
height: 70,
width: 70,
decoration: BoxDecoration(
border: Border.all(color: Colors.white, width: 4),
shape: BoxShape.circle,
gradient: LinearGradient(
begin: const Alignment(0.7, -0.5),
end: const Alignment(0.6, 0.5),
colors: [
Color(0xFF53a78c),
Color(0xFF70d88b),
],
),
),
child: Icon(Icons.photo_camera, size: 30),
),
),
),
),
floatingActionButtonLocation: FloatingActionButtonLocation.centerDocked,
bottomNavigationBar: BottomAppBar(
color: Colors.white,
child: Container(
height: 80,
color: Colors.white,
),
),
),
);
}
}
Here is a crystal clear official demonstration : https://youtu.be/2uaoEDOgk_I
Code will be something like this:
Scaffold(..
floatingActionButton..
bottomNavigationBar..
floatingActionButtonLocation: FloatingActionButtonLocation.endDocked
Another option is to use notchMargin
in your BottomAppBar
to get the opposite to your answer. It looks amazing so I decided to add that option too.
return Scaffold(
appBar: AppBar(
title: Text('Flutter notch demo'),
),
bottomNavigationBar: BottomAppBar(
notchMargin: 2.0,
shape: CircularNotchedRectangle(),
),
floatingActionButtonLocation:
FloatingActionButtonLocation.endDocked,
floatingActionButton: FloatingActionButton(
onPressed: () => Navigator.of(context).pop(),
child: Icon(Icons.done_all),
),
);
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.