效果图
1. ListTile 通常用于在 Flutter 中填充 ListView
属性如下:
title: title 参数可以接受任何小部件,但通常是文本小部件
subtitle: 副标题是标题下面较小的文本
dense: 使文本更小,并将所有内容打包在一起
leading: 将图像或图标添加到列表的开头。这通常是一个图标。
trailing: 设置拖尾将在列表的末尾放置一个图像。这对于指示主-细节布局特别有用。
contentPadding: 设置内容边距,默认是 16,但我们在这里设置为 0
selected: 如果选中列表的 item 项,那么文本和图标的颜色将成为主题的主颜色。
Gesture recognition: ListTile 可以检测用户的点击和长按事件,onTap 为单击,onLongPress 为长按。对于波纹效果是内置的
enabled: 通过将 enable 设置为 false,来禁止点击事件
2.实例代码
代码语言:javascript复制
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
title: 'My App',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: Scaffold(
appBar: AppBar(title: Text('ListTile guide')),
body: BodyWidget(),
),
);
}
}
String horseUrl = 'https://i.stack.imgur.com/Dw6f7.png';
String cowUrl = 'https://i.stack.imgur.com/XPOr3.png';
String camelUrl = 'https://i.stack.imgur.com/YN0m7.png';
String sheepUrl = 'https://i.stack.imgur.com/wKzo8.png';
String goatUrl = 'https://i.stack.imgur.com/Qt4JP.png';
class BodyWidget extends StatelessWidget {
@override
Widget build(BuildContext context) {
return ListView(
children: <Widget>[
ListTile(
leading: CircleAvatar(
backgroundImage: NetworkImage(horseUrl),
),
title: Text('Horse'),
subtitle: Text('A strong animal'),
trailing: Icon(Icons.keyboard_arrow_right),
onTap: () {
print('horse');
},
selected: true,
),
ListTile(
leading: CircleAvatar(
backgroundImage: NetworkImage(cowUrl),
),
title: Text('Cow'),
subtitle: Text('Provider of milk'),
trailing: Icon(Icons.keyboard_arrow_right),
onTap: () {
print('cow');
},
),
ListTile(
leading: CircleAvatar(
backgroundImage: NetworkImage(camelUrl),
),
title: Text('Camel'),
subtitle: Text('Comes with humps'),
trailing: Icon(Icons.keyboard_arrow_right),
onTap: () {
print('camel');
},
enabled: false,
),
ListTile(
leading: CircleAvatar(
backgroundImage: NetworkImage(sheepUrl),
),
title: Text('Sheep'),
subtitle: Text('Provides wool'),
trailing: Icon(Icons.keyboard_arrow_right),
onTap: () {
print('sheep');
},
),
ListTile(
leading: CircleAvatar(
backgroundImage: NetworkImage(goatUrl),
),
title: Text('Goat'),
subtitle: Text('Some have horns'),
trailing: Icon(Icons.keyboard_arrow_right),
onTap: () {
print('goat');
},
),
],
);
}
}