从不同的有状态小部件打开抽屉菜单

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Drawer Example')),
        body: Center(child: MyButton()),
        drawer: Drawer(
          child: ListView(
            padding: EdgeInsets.zero,
            children: <Widget>[
              DrawerHeader(
                decoration: BoxDecoration(
                  color: Colors.blue,
                ),
                child: Text('Menu'),
              ),
              ListTile(
                title: Text('Item 1'),
                onTap: () {
                  // Handle item 1 tap
                },
              ),
              ListTile(
                title: Text('Item 2'),
                onTap: () {
                  // Handle item 2 tap
                },
              ),
            ],
          ),
        ),
      ),
    );
  }
}

class MyButton extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return ElevatedButton(
      onPressed: () {
        Scaffold.of(context).openDrawer();
      },
      child: Text('Open Drawer'),
    );
  }
}