我想要实现的目标:我尝试创建一个GroupedListView
,其中将项目按日期分组(到目前为止,GroupedListView
小部件的使用情况很好)然后显示单个卡片中的分组项目。 (有关所需结果enter image description here,请参见附件)。
问题是项目生成器为每个项目创建了一张卡片,但是我找不到将同一日期的所有项目放入一张卡片的方法。有什么建议吗?
我在这个主题上找到了最接近的讨论(What is the best practice to group items into CardView?),但我不知道如何将其应用于Flutter。非常感谢您的帮助!
出于说明目的,我从pub dev复制/粘贴示例代码(请参见https://pub.dev/packages/grouped_list#-example-tab-)。如官方示例所示,每个商品都有自己的卡片。这就是我被困住的地方...
import 'package:flutter/material.dart';
import 'package:grouped_list/grouped_list.dart';
void main() => runApp(MyApp());
List _elements = [
{'name': 'John', 'group': 'Team A'},
{'name': 'Will', 'group': 'Team B'},
{'name': 'Beth', 'group': 'Team A'},
{'name': 'Miranda', 'group': 'Team B'},
{'name': 'Mike', 'group': 'Team C'},
{'name': 'Danny', 'group': 'Team C'},
];
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: Scaffold(
appBar: AppBar(
title: Text('Grouped List View Example'),
),
body: GroupedListView<dynamic, String>(
groupBy: (element) => element['group'],
elements: _elements,
sort: true,
groupSeparatorBuilder: (String value) => Padding(
padding: const EdgeInsets.all(8.0),
child: Center(
child: Text(
value,
style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
)),
),
itemBuilder: (c, element) {
return Card(
elevation: 8.0,
margin: new EdgeInsets.symmetric(horizontal: 10.0, vertical: 6.0),
child: Container(
child: ListTile(
contentPadding:
EdgeInsets.symmetric(horizontal: 20.0, vertical: 10.0),
leading: Icon(Icons.account_circle),
title: Text(element['name']),
trailing: Icon(Icons.arrow_forward),
),
),
);
},
),
),
);
}
}