如何在左上角的flutter中添加没有Appbar的抽屉|扑

问题描述

如何在没有应用栏的情况下在左上角添加抽屉，当我尝试使用定位小部件和图标按钮并将抽屉用作小部件功能时，但它不起作用。还有其他方法吗？？

class HomePage extends StatefulWidget {
  @override
  _HomePageState createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  Widget drawer() {
    return Drawer();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.lightBlue,body: SafeArea(
        child: Positioned(
          top: 2,left: 2,child: IconButton(
            icon: Icon(
              Icons.menu,),onpressed: () {
              drawer();
            },);
  }
}

解决方法

GlobalKey<ScaffoldState> _scaffoldState = GlobalKey<ScaffoldState>();

return Scaffold(
  key: _scaffoldState,drawer: DrawerView(),body: ThemeScreen(
    header: Column(
      crossAxisAlignment: CrossAxisAlignment.start,children: [
        IconButton(
          icon: Icon(Icons.menu,color: Colors.white,size: 15),onPressed: (){
            _scaffoldState.currentState.openDrawer();
          },),],);