20个Flutter实例视频教程-第13节: 展开闭合案例

20个Flutter实例视频教程-第13节: 展开闭合案例

 

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创建demo08

 

main.dart

 

expansion_tile.dart

 

效果预览

 

 

代码

import 'package:flutter/material.dart';
import 'expansion_tile.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: ExpansionTileDemo()
    );
  }
}

main.dart

 

 

import 'package:flutter/material.dart';

class ExpansionTileDemo extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text('Expansion title demo'),),
      body: Center(
        child: ExpansionTile(
          title: Text('Expansion Tile'),
          leading: Icon(Icons.ac_unit),
          backgroundColor: Colors.white12,//一打开有个背景色
          children: <Widget>[
            ListTile(
              title: Text('list tile'),
              subtitle: Text('subtitle'),
            )
          ],
        ),
      ),
    );
  }
}

expansion_tile