选项卡未显示在颤动中 [英] Tabs are not displaying in the flutter
本文介绍了选项卡未显示在颤动中的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正试图在Flutter中构建一个应用程序.我想在屏幕上显示标签.我正在尝试以下操作,但未显示标签.
Hi I am trying to build an app in the flutter. I want to have tabs in my screen. I am trying like below but it is not displaying tabs.
有人知道这是什么原因吗?
Does anyone know what is the reason of it ?
class DashboardScreen extends StatelessWidget {
Widget bodyData() => SingleChildScrollView(
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
children: <Widget>[
Padding(
padding: const EdgeInsets.all(8.0),
child: DefaultTabController(
length: 3,
child: Scaffold(
appBar: AppBar(
bottom: TabBar(
tabs: [
Tab(icon: Icon(Icons.directions_car)),
Tab(icon: Icon(Icons.directions_transit)),
Tab(icon: Icon(Icons.directions_bike)),
],
),
title: Text('Tabs Demo'),
),
body: TabBarView(
children: [
Icon(Icons.directions_car),
Icon(Icons.directions_transit),
Icon(Icons.directions_bike),
],
),
),
),
),
SizedBox(
height: 10.0,
),
],
),
),
);
@override
Widget build(BuildContext context) {
return CommonScaffold(
appTitle: "Pay",
showDrawer: true,
bodyData: bodyData(),
);
}
}
当我有以下代码时,它将正确显示文本.
When I have below code then it display the text correctly.
Widget bodyData() => SingleChildScrollView(
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
children: <Widget>[
Padding(
padding: const EdgeInsets.all(8.0),
child: Center(
child: Text(
"Pay Your Bills",
style:
TextStyle(fontWeight: FontWeight.w700, fontSize: 20.0),
),
),
),
SizedBox(
height: 10.0,
),
],
),
),
);
推荐答案
我不知道您确切想要创建什么,但是它们是您的代码中的几个问题. 您可以检查以下代码,使其在标签"视图中正常运行.
i don't know what you exactly want to create but their are several problems with your code. you can check below code it works fine for Tab view.
import 'package:flutter/material.dart';
void main() {
runApp(MyHomePage());
}
class MyHomePage extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
theme: new ThemeData(
accentColor: Colors.blue,
),
home: DashboardScreen(),
);
}
}
class DashboardScreen extends StatelessWidget {
Widget bodyData() =>
DefaultTabController(
length: 3,
child: Scaffold(
appBar: AppBar(
bottom: TabBar(
tabs: [
Tab(icon: Icon(Icons.directions_car)),
Tab(icon: Icon(Icons.directions_transit)),
Tab(icon: Icon(Icons.directions_bike)),
],
),
title: Text('Tabs Demo'),
),
body: TabBarView(
children: [
Icon(Icons.directions_car),
Icon(Icons.directions_transit),
Icon(Icons.directions_bike),
],
),
),
);
@override
Widget build(BuildContext context) {
return Scaffold(
body: bodyData(),
);
}
}
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