Question

我已经定制了Drawer和AppBar。我希望在点击Drawer中的操作窗口小部件时打开AppBar。我想知道如何针对自定义AppBar

实施此操作

@override
 Widget build(BuildContext context) {
  return Scaffold(
   endDrawer:buildProfileDrawer(),
   appBar: setAppBar(),
   body: HomeBody()
  );
}

//custom widget
Widget setAppBar(){
  return AppBar(
    actions: <Widget>[
      IconButton(
        icon: Icon(Icons.account_circle,),
        onPressed: () {
          //Open the drawer
        },
      )
    ],
  );
}

//Custom drawer
buildProfileDrawer() {
  return Drawer(
    //....drawer childs
  );    
}

Answer 1

您应该在GlobalKey中使用Scaffold，并在其上调用openEndDrawer方法。

GlobalKey<ScaffoldState> _key = GlobalKey(); // add this

@override
Widget build(BuildContext context) {
  return Scaffold(
    key: _key, // set it here
    endDrawer: buildProfileDrawer(),
    appBar: setAppBar(),
    body: Center(),
  );
}

//custom widget
Widget setAppBar() {
  return AppBar(
    actions: <Widget>[
      IconButton(
        icon: Icon(Icons.account_circle),
        onPressed: () {
          _key.currentState.openEndDrawer(); // this opens drawer
        },
      )
    ],
  );
}

//Custom drawer
buildProfileDrawer() {
  return Drawer();
}

更新

GlobalKey<ScaffoldState> _key = GlobalKey();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      key: _key,
      endDrawer: buildProfileDrawer(),
      appBar: setAppBar(_key),
      body: Center(),
    );
  }

某些文件中的某处。

Widget setAppBar(GlobalKey<ScaffoldState> globalKey) {
  return AppBar(
    actions: <Widget>[
      IconButton(
        icon: Icon(Icons.account_circle),
        onPressed: () {
          globalKey.currentState.openEndDrawer();
        },
      )
    ],
  );
}

在其他文件中的某处

buildProfileDrawer() {
  return Drawer();
}

“如何从自定义AppBar打开脚手架抽屉？”

1 个答案: