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是否可以通过单击 BottomNavigationbarItem 按钮之一来显示水平列表？我想要的是，如果用户点击 Clothes 标签，衣服列表将如下图所示。
这是我现有的代码
final List<Widget> _Widgets = <Widget>[
ClothesPage(),colorsPage(),IDeasPage(),ProfilePage(),];
class _MyHomePageState extends State<MyHomePage> {
int _currenTindex = 0;
Widget build(BuildContext context) {
final colorscheR_438_11845@e = theme.of(context).colorscheR_438_11845@e;
final texttheme = theme.of(context).texttheme;
return Scaffold(
// This body is new.
body: _Widgets[_currenTindex],bottomNavigationbar: BottomNavigationbar(
type: BottomNavigationbarType.fixed,currenTindex: _currenTindex,BACkgroundcolor: colors.orangeAccent,SELEctedItemcolor: colors.white,unSELEctedItemcolor: colorscheR_438_11845@e.onSurface.withOpacity(.40),SELEctedLabelStyle: texttheme.caption,unSELEctedLabelStyle: texttheme.caption,onTap: (value) {
_currenTindex = value;
showDialog(
context: context,barrIErdismissible: true,builder: (BuildContext context) {
return column(
mainAxisAlignment: MainAxisAlignment.end,children: [
_Widgets[_currenTindex],SizedBox(
// Use @R_197_10112@ever height you desire.
height: 90,),],);
},);
},items: [
BottomNavigationbarItem(
title: Text('Clothes'),icon: Icon(Icons.design_services_rounded),BottomNavigationbarItem(
title: Text('colors'),icon: Icon(Icons.colorize_rounded),BottomNavigationbarItem(
title: Text('IDeas'),icon: Icon(Icons.lightbulb_outline_rounded),BottomNavigationbarItem(
title: Text('Profile'),icon: Icon(Icons.face_rounded),);
}
}
class ClothesPage extends StatelessWidget {
@overrIDe
Widget build(BuildContext context) {
return new Card(
elevation: 9.0,shape: new RoundedRectangleborder(
borderRadius: new borderRadius.circular(20.0)),child: new Container(
decoration: Boxdecoration(
image: decorationImage(
image: Assetimage(
'assets/shirt/white-shirt1.jpg'),// Use the path here.
fit: BoxFit.cover,);
}
}
class colorsPage extends StatelessWidget {
@overrIDe
Widget build(BuildContext context) {
return Card(
color: colors.white,child: padding(
padding: EdgeInsets.all(10),child: Text(
"color",);
}
}
class IDeasPage extends StatelessWidget {
@overrIDe
Widget build(BuildContext context) {
return Card(
color: colors.white,child: Text(
"IDea",);
}
}
class ProfilePage extends StatelessWidget {
@overrIDe
Widget build(BuildContext context) {
return Card(
color: colors.white,child: Text(
"Profile",);
}
}
当您将 showDialog 作为 _widgets[_currenTindex] 的主体时，Scaffold 是不必要的。你可以这样做：
showDialog 的 onTap 属性中的 BottomNavigationBar 并使用 setState()：BottomNavigationBar(
// ... other lines
onTap: (value) {
// This notify the widget to rebuild,without it the screen will not react to your gesture
setState(() {
_currenTindex = value;
});
},)
ListView 中添加 ClothesPage。完整的工作代码：
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.indigo,),home: SomeScreen(),);
}
}
class SomeScreen extends StatefulWidget {
@override
_SomeScreenState createState() => _SomeScreenState();
}
class _SomeScreenState extends State<SomeScreen> {
var _currenTindex = 0;
final List<Widget> _widgets = <Widget>[
ClothesPage(),Container(),];
@override
Widget build(BuildContext context) {
return Scaffold(
// This body is new.
body: _widgets[_currenTindex],bottomNavigationBar: BottomNavigationBar(
type: BottomNavigationBarType.fixed,currenTindex: _currenTindex,BACkgroundColor: Colors.orangeAccent,SELEctedItemColor: Colors.white,onTap: (value) {
// This notify the widget to rebuild,without it the screen will not react to your gesture
setState(() {
_currenTindex = value;
});
},items: [
BottomNavigationBarItem(
title: Text('Clothes'),icon: Icon(Icons.design_services_rounded),BottomNavigationBarItem(
title: Text('Colors'),icon: Icon(Icons.colorize_rounded),BottomNavigationBarItem(
title: Text('Ideas'),icon: Icon(Icons.lightbulb_outline_rounded),BottomNavigationBarItem(
title: Text('Profile'),icon: Icon(Icons.face_rounded),],);
}
}
class ClothesPage extends StatelessWidget {
@override
Widget build(BuildContext context) {
return column(
mainAxisAlignment: MainAxisAlignment.spacebetween,children: [
Expanded(
child: new Card(
elevation: 9.0,shape: new RoundedRectangleBorder(
borderRadius: new BorderRadius.circular(20.0)),child: new Container(
decoration: BoxDecoration(
image: DecorationImage(
image: AssetImage(
'assets/shirt/white-shirt1.jpg'),// Use the path here.
fit: BoxFit.cover,Container(
height: 150,child: ListView.separated(
shrinkWrap: true,scrollDirection: Axis.horizontal,itemBuilder: (context,indeX) => Container(
color: Colors.blue,width: 150,//! Modify the width of each item
child:
Container(),//! Add your clothing product photos here
),separatorBuilder: (context,indeX) => Container(
color: Colors.grey,width: 2,itemCount: 5),// number of your clothing products
)
],);
}
}
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