单击AppBar打开抽屉

单击AppBar打开抽屉

使用

Key

你的

Scaffold

，并通过调用显示抽屉

myKey.currentState.openDrawer()

，这里是工作的代码：

import "package:flutter/material.dart";class Test extends StatefulWidget {  @override  _TestState createState() => new _TestState();}class _TestState extends State<Test> {  final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();  @override  Widget build(BuildContext context) {    return new Scaffold(      key: _scaffoldKey,      drawer: new Drawer(),      appBar: new AppBar(        leading: new IconButton(          icon: new Icon(Icons.settings),          onPressed: () => _scaffoldKey.currentState.openDrawer(),        ),      ),    );  }}