AppBar 下方的 Flutter Drawer

Question

我在我的 Flutter 应用程序中实现了 Drawer。

关闭Drawer:

已打开 Drawer:

如您所见，Drawer 在 Appbar 之上。在我在 Flutter 上启动该应用程序之前，我们有一个带有 Drawer 的原生 Android 应用程序，它曾经看起来像这样：

关闭Drawer:

已打开 Drawer:

这是我的代码：

class MyDrawer extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return _buildDrawer(context);
  }
}

Widget _buildDrawer(BuildContext context) {
  return new Drawer(
    child: new ListView(
      children: <Widget>[
        _buildDrawerItem(context, EnumDrawerItem.PROJECT_SELECTION, Icons.home, Colors.transparent),
        new Divider(height: 20.0),
        _buildDrawerItem(context, EnumDrawerItem.TASK_LIST, Icons.home, Colors.transparent),
        new Divider(),
        _buildDrawerItem(context, EnumDrawerItem.GUIDED_TASKS, Icons.home, Colors.transparent),
        new Divider(),
        _buildDrawerItem(context, EnumDrawerItem.PHOTOS, Icons.home, Colors.transparent),
        new Divider(),
        _buildDrawerItem(context, EnumDrawerItem.DOCUMENTS, Icons.home, Colors.transparent),
        new Divider(),
        _buildDrawerItem(context, EnumDrawerItem.LOG_OUT, Icons.home, const Color(0x85bf0202)),
        new Divider(),
      ],
    ),
  );
}

Widget _buildDrawerItem(BuildContext context, EnumDrawerItem drawerItem, IconData iconData, Color color) {
  return  Container(
    color: color,
    child: new Padding(
      padding: new EdgeInsets.all(7.0),
      child: new Row(
        children: <Widget>[
          new Icon(iconData),
          new Container(
            margin: new EdgeInsets.fromLTRB(10.0, 0.0, 0.0, 0.0),
            child: new Text(
              drawerItem.toString(),
              style: styleDrawerItem,
            ),
          ),
        ],
      ),
    ),
  );
}

我知道这是标准的 Material Design 样式，但客户希望它保持原样。

是否可以像最后两个截图那样实现？你有什么想法吗？

Answer 1

将您的主 Scaffold 包裹在另一个 Scaffold 中并使用子 Scaffold 的抽屉，同时确保将 automaticallyImplyLeading 设置为 false，这样您就不会'取回 AppBar

中的图标

更新： 我不推荐这种方式，因为 issue

return Scaffold(
      primary: true,
      appBar: AppBar(
        title: Text("Parent Scaffold"),
        automaticallyImplyLeading: false,
      ),
      body: Scaffold(
        drawer: Drawer(),
      ),
    );

Final Result :

Answer 2

我在示例中使用脚手架中的键和脚手架主体中的引用

GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey();

return Scaffold(
  appBar: AppBar(
      title: Text('Draw'),
      leading: IconButton(
          icon: Icon(Icons.dehaze),
          onPressed: () {
            if (_scaffoldKey.currentState.isDrawerOpen == false) {
              _scaffoldKey.currentState.openDrawer();
            } else {
              _scaffoldKey.currentState.openEndDrawer();
            }
          })),
  body: Scaffold(
    key: _scaffoldKey,
    drawer: Drawer(),
    body: Center(
      child: Text('Drawer'),
    ),
  ),
);

Answer 3

试试这个：

class HomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    var statusBarHeight = MediaQuery.of(context).padding.top;
    var appBarHeight = kToolbarHeight;  //this value comes from constants.dart and equals to 56.0
    return Scaffold(
      drawerScrimColor: Colors.transparent,
      appBar: AppBar(),
      drawer: Container(
        padding: EdgeInsets.only(top: statusBarHeight+ appBarHeight + 1),//adding one pixel for appbar shadow
        width: MediaQuery.of(context).size.width,
        child: Drawer(),//write your drawer code
      ),
      body: AnyBody(), //add your body
      bottomNavigationBar: AnyNavigationBar(), //add your navigation bar
    );
  }
}

Answer 4

简单明了：

drawer: Padding(
    padding: const EdgeInsets.fromLTRB(0, 80, 0, 0),
    child: Drawer(),

AppBar 下方的 Flutter Drawer

Flutter Drawer below AppBar

appbar

drawer

flutter

flutter-layout