[英]How to create a vertical fixed custom tab bar using container in flutter
I have to create a vertical left side fixed vertical bar, something like this我必须创建一个垂直左侧固定垂直条,像这样
I have created using TabBar but there is a lot extra work that needs to be done.我已经使用 TabBar 创建了,但是还有很多额外的工作需要完成。 Like I have to remove the blur hover effect on it and then on click of tabBar item should display its corresponding content in the center and it should be scrollable, if content is more.
就像我必须删除它上面的模糊 hover 效果,然后点击 tabBar 项目应该在中心显示其相应的内容,如果内容更多,它应该是可滚动的。
You can copy paste run full code below您可以在下面复制粘贴运行完整代码
You can use NavigationRail
您可以使用
NavigationRail
You can change NavigationRailDestination
's icon
and selectedIcon
您可以更改
NavigationRailDestination
的icon
和selectedIcon
icon
and selectedIcon
accept widget
, so you can use Column
wrap icon
and Text
per your request icon
和selectedIcon
接受widget
,因此您可以根据您的请求使用Column
wrap icon
和Text
code snippet代码片段
NavigationRail(
selectedIndex: _selectedIndex,
onDestinationSelected: (int index) {
setState(() {
_selectedIndex = index;
});
},
labelType: NavigationRailLabelType.selected,
destinations: [
NavigationRailDestination(
icon: Column(
children: [Icon(Icons.favorite_border), Text('Button 1')],
),
selectedIcon: Container(
color: Colors.green,
child: Column(
children: [Icon(Icons.favorite_border), Text('Button 1')],
),
),
label: Text(""),
),
NavigationRailDestination(
icon: Column(
children: [Icon(Icons.bookmark_border), Text('Button 2')],
),
selectedIcon: Column(
children: [Icon(Icons.book), Text('2 clicked')],
),
label: Text(''),
),
NavigationRailDestination(
icon: Icon(Icons.star_border),
selectedIcon: Icon(Icons.star),
label: Text('Third'),
),
],
),
working demo工作演示
full code完整代码
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
/// This is the main application widget.
class MyApp extends StatelessWidget {
static const String _title = 'Flutter Code Sample';
@override
Widget build(BuildContext context) {
return MaterialApp(
title: _title,
home: MyStatefulWidget(),
);
}
}
/// This is the stateful widget that the main application instantiates.
class MyStatefulWidget extends StatefulWidget {
MyStatefulWidget({Key key}) : super(key: key);
@override
_MyStatefulWidgetState createState() => _MyStatefulWidgetState();
}
/// This is the private State class that goes with MyStatefulWidget.
class _MyStatefulWidgetState extends State<MyStatefulWidget> {
int _selectedIndex = 0;
@override
Widget build(BuildContext context) {
return Scaffold(
body: Row(
children: <Widget>[
NavigationRail(
selectedIndex: _selectedIndex,
onDestinationSelected: (int index) {
setState(() {
_selectedIndex = index;
});
},
labelType: NavigationRailLabelType.selected,
destinations: [
NavigationRailDestination(
icon: Column(
children: [Icon(Icons.favorite_border), Text('Button 1')],
),
selectedIcon: Container(
color: Colors.green,
child: Column(
children: [Icon(Icons.favorite_border), Text('Button 1')],
),
),
label: Text(""),
),
NavigationRailDestination(
icon: Column(
children: [Icon(Icons.bookmark_border), Text('Button 2')],
),
selectedIcon: Column(
children: [Icon(Icons.book), Text('2 clicked')],
),
label: Text(''),
),
NavigationRailDestination(
icon: Icon(Icons.star_border),
selectedIcon: Icon(Icons.star),
label: Text('Third'),
),
],
),
VerticalDivider(thickness: 1, width: 1),
// This is the main content.
Expanded(
child: Center(
child: Text('selectedIndex: $_selectedIndex'),
),
)
],
),
);
}
}
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