Scalfold 是 Flutter MaterialApp 常用的布局 Widget，接受一个 drawer属性，支持配置 Drawer，可以实现从侧边栏拉出导航面板，好处是把一些功能菜单折叠起来，通常Drawer是和Listview组件或者 Column组合使用进行纵向布局。Listview组件是竖排排列的，上下可滑动。
【注意】如果没有设置 AppBar 的 leading 属性，则当使用 Drawer 的时候会自动显示一个 IconButton 来告诉用户有侧边栏（在 Android 上通常是显示为三个横的图标）。
child：Widget类型，可以放置任意可显示对象
elevation：double类型，组件的Z坐标的顺序
import 'package:demo_app/pages/drawer/drawer.dart';
import 'package:flutter/material.dart';
class Home extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(),
body: Container(),
drawer: DrawLayout()
);
}
}import 'package:flutter/material.dart';
class DrawLayout extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Drawer(
child: Text('drawer')
);
}
}import 'package:flutter/material.dart';
class DrawLayout extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Drawer(
child: ListView(
padding: EdgeInsets.all(0.0),
children: <Widget>[
DrawerHeader(
child: Center(
child: Text('drawer')
),
decoration: BoxDecoration(
color: Colors.blue
),
)
]
)
);
}
}
import 'package:flutter/material.dart';
class DrawLayout extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Drawer(
child: ListView(
padding: EdgeInsets.all(0.0),
children: <Widget>[
UserAccountsDrawerHeader(
accountName: Text('username'),
accountEmail: Text('username@163.com'),
currentAccountPicture: CircleAvatar(
child: Icon(Icons.home),
),
onDetailsPressed: (){},
otherAccountsPictures: <Widget>[
CircleAvatar(
child: Icon(Icons.settings)
),
],
decoration: BoxDecoration(
color: Colors.green
),
),
ListTile(
title: Text('设置'),
leading: Icon(Icons.settings),
trailing: Icon(Icons.arrow_forward_ios)
)
]
)
);
}
}
