背景

应用左侧或右侧导航面板；

import 'package:flutter/material.dart';

class CustomDrawer extends StatelessWidget {
  const CustomDrawer({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return SizedBox(
      height: 400,
      child: Scaffold(
        appBar: AppBar(
          title: const Text('Flutter Unit'),
        ),
        //drawer左边弹出来
        drawer: Drawer(
          elevation: 3,
          child: _buildChild(),
        ),
        //endDrawer右边弹出来
      ),
    );
  }

  Widget _buildChild() => ListView(
        padding: EdgeInsets.zero,
        children: const <Widget>[
          DrawerHeader(
            decoration: BoxDecoration(
              image: DecorationImage(
                  image: AssetImage('assets/images/ic_launcher.png'),
                  fit: BoxFit.cover),
            ),
            child: Text(
              '怀君',
              style: TextStyle(fontSize: 24, color: Colors.white, shadows: [
                Shadow(color: Colors.black, offset: Offset(1, 1), blurRadius: 3)
              ]),
            ),
          ),
          ListTile(
            leading: Icon(
              Icons.star,
              color: Colors.blue,
            ),
            title: Text('我的收藏'),
          ),
          ListTile(
            leading: Icon(
              Icons.insert_drive_file,
              color: Colors.green,
            ),
            title: Text('wodeceshi'),
          ),
        ],
      );
}