我正在尝试使displayAccoutList（）可滚动。
我尝试使用ListView，但是没有用。我正在考虑使用ListView.builder，但我不知道如何为accountItems（）创建数据
在此处输入代码import'package：flutter / material.dart'; 导入'app_drawer.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
title: 'Accounts',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: Account(),
);
}
}
class Account extends StatefulWidget {
@override
_AccountState createState() => _AccountState();
}
class _AccountState extends State<Account> {
Card topArea() =>
Card(
margin: EdgeInsets.all(10.0),
elevation: 1.0,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(50.0))),
child: Container(
decoration: BoxDecoration(
gradient: RadialGradient(
colors: [Color(0xFFFF5722), Color(0xFFFF5722)])),
padding: EdgeInsets.all(5.0),
// color: Color(0xFF015FFF),
child: Column(
children: <Widget>[
Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
IconButton(
icon: Icon(
Icons.arrow_back,
color: Colors.white,
),
onPressed: () {},
),
Text("Savings",
style: TextStyle(color: Colors.white, fontSize: 20.0)),
IconButton(
icon: Icon(
Icons.arrow_forward,
color: Colors.white,
),
onPressed: () {},
)
],
),
Center(
child: Padding(
padding: EdgeInsets.all(5.0),
child: Text(r"£ " "100,943.33",
style: TextStyle(color: Colors.white, fontSize: 24.0)),
),
),
SizedBox(height: 35.0),
],
)),
);
@override
Widget build(BuildContext context) {
return Scaffold(
drawer: AppDrawer(),
appBar: AppBar(
iconTheme: IconThemeData(
color: Colors.grey, //change your color here
),
backgroundColor: Colors.white,
elevation: 0.0,
title: Text(
"Accounts",
style: TextStyle(color: Colors.black),
),
centerTitle: true,
actions: <Widget>[
IconButton(
icon: Icon(
Icons.search,
color: Colors.grey,
),
onPressed: () {},
)
],
),
body: Container(
color: Colors.white,
child: Column(
children: <Widget>[
topArea(),
SizedBox(
height: 40.0,
child: Icon(Icons.refresh,
size: 35.0,
color: Color(0xFFFF5722),
),
),
displayAccoutList()
],
),
),
bottomNavigationBar: BottomAppBar(
elevation: 0.0,
child: Container(
margin: EdgeInsets.symmetric(vertical: 20.0),
child: Row(
mainAxisSize: MainAxisSize.max,
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: <Widget>[
FlatButton(
padding:
EdgeInsets.symmetric(vertical: 12.0, horizontal: 30.0),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(0.0)),
color: Color(0xFFFF5722),
// borderSide: BorderSide(color: Color(0xFF015FFF), width: 1.0),
onPressed: () {},
child: Text("ACTIVITY"),
),
OutlineButton(
padding:
EdgeInsets.symmetric(vertical: 12.0, horizontal: 28.0),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(0.0)),
borderSide: BorderSide(color: Color(0xFFFF5722), width: 1.0),
onPressed: () {},
child: Text("STATEMENTS"),
),
OutlineButton(
padding:
EdgeInsets.symmetric(vertical: 12.0, horizontal: 28.0),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(0.0)),
borderSide: BorderSide(color: Color(0xFFFF5722), width: 1.0),
onPressed: () {},
child: Text("DETAILS"),
)
],
),
),
)
);
}
}
Container accountItems(String item, String charge, String dateString,
String type,
{Color oddColour = Colors.white}) =>
Container(
decoration: BoxDecoration(color: oddColour),
padding:
EdgeInsets.only(top: 20.0, bottom: 20.0, left: 5.0, right: 5.0),
child: Column(
children: <Widget>[
Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Text(item, style: TextStyle(fontSize: 16.0)),
Text(charge, style: TextStyle(fontSize: 16.0))
],
),
SizedBox(
height: 10.0,
),
Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Text(dateString,
style: TextStyle(color: Colors.grey, fontSize: 14.0)),
Text(type, style: TextStyle(color: Colors.grey, fontSize: 14.0))
],
),
],
),
);
displayAccoutList() {
return Container(
margin: EdgeInsets.all(15.0),
child: Column(
children: <Widget>[
accountItems("M KING", r"+ £ 4,946.00", "15-07-19", "Credit",
oddColour: const Color(0xFFF7F7F9)),
accountItems(
"Gordon Street Tenants", r"+ £ 5,428.00", "15-07-19", "Credit"),
accountItems("Amazon EU", r"+ £ 746.00", "15-07-19", "Credit",
oddColour: const Color(0xFFF7F7F9)),
accountItems(
"Floww LTD", r"+ £ 5,526.00", "15-07-19", "Credit"),
accountItems(
"KLM", r"- £ 2,500.00", "10-07-19", "Payment",
oddColour: const Color(0xFFF7F7F9)),
],
),
);
`
另一页app_drawer.dart
`
import 'package:flutter/material.dart';
class AppDrawer extends StatefulWidget {
@override
_AppDrawerState createState() => _AppDrawerState();
}
class _AppDrawerState extends State<AppDrawer> {
@override
Widget build(BuildContext context) {
return SizedBox(
width: 160.0,
child: Drawer(
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
Padding(
padding: EdgeInsets.only(top: 50.0),
child: FlatButton.icon(
icon: Icon(
Icons.arrow_back,
color: Colors.grey,
),
onPressed: null,
label: Text("Back",
style: TextStyle(
fontWeight: FontWeight.w400,
fontSize: 16.0,
color: Colors.black)),
color: Colors.black,
),
),
buildMenuItem(Icons.account_balance, "ACCOUNTS",
opacity: 1.0, color: Color(0xFFFF6E40)),
Divider(),
buildMenuItem(Icons.compare_arrows, "TRANSFER"),
Divider(),
buildMenuItem(Icons.receipt, "STATEMENTS"),
Divider(),
buildMenuItem(Icons.attach_money, "PAYMENTS"),
Divider(),
buildMenuItem(Icons.sentiment_satisfied, "INVESTMENTS"),
Divider(),
buildMenuItem(Icons.phone, "SUPPORT"),
Divider()
],
),
),
);
}
Opacity buildMenuItem(IconData icon, String title,
{double opacity = 0.3, Color color = Colors.black}) {
return Opacity(
opacity: opacity,
child: Center(
child: Column(
children: <Widget>[
SizedBox(
height: 20.0,
),
Icon(
icon,
size: 50.0,
color: color,
),
SizedBox(
height: 10.0,
),
Text(title,
style: TextStyle(
fontWeight: FontWeight.w500, fontSize: 14.0, color: color)),
SizedBox(
height: 10.0,
),
],
),
),
);
}
}
`
要能够滚动浏览该部分并进行无限量交易
答案 0 :(得分：0)
我想这就是你要的。
在此代码段中，我将Language定义为具有属性language和rating的类。
然后，我在无状态小部件TheList中创建了语言列表。
最后，我使用listView.builder来映射列表的长度，并显示文本以显示语言的属性。
让我知道您是否有任何疑问！
import 'package:flutter/material.dart';
class Language {
const Language({this.language,this.rating});
final String language;
final String rating;
}
class TheList extends StatelessWidget {
// Builder methods rely on a set of data, such as a list.
final List<Language> _languages = [
const Language(language: "flutter", rating: "amazing"),
const Language(language: "javascript", rating: "stellar"),
const Language(language: "java", rating: "sucks"),
];
// First, make your build method like normal.
// Instead of returning Widgets, return a method that returns widgets.
// Don't forget to pass in the context!
@override
Widget build(BuildContext context) {
return _buildList(context);
}
// A builder method almost always returns a ListView.
// A ListView is a widget similar to Column or Row.
// It knows whether it needs to be scrollable or not.
// It has a constructor called builder, which it knows will
// work with a List.
ListView _buildList(context) {
return ListView.builder(
// Must have an item count equal to the number of items!
itemCount: _languages.length,
// A callback that will return a widget.
itemBuilder: (context, index) {
// In our case, a Language and its rating for each language in the list.
return Text(_languages[index].language + ": " + _languages[index].rating);
},
);
}
}