Flutter Drawer below AppBar - flutter

Question

I've implemented a Drawer in my Flutter app.
Closed Drawer:
Opened Drawer:
As you can see, the Drawer is on top of the Appbar. Before I started the app on Flutter, we had a native Android app with a Drawer that used to look like this:
Closed Drawer:
Opened Drawer:
Here is my code:
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,
),
),
],
),
),
);
}
I know this is the standard Material Design style, but the client wants it as it was before.
Would it be possible to implemented it as in the 2 last screenshots? Do you have any idea?

Answer 1

Wrap your main Scaffold in another Scaffold and use the drawer of child Scaffold also make sure to set automaticallyImplyLeading to false so you don't get back icon in the AppBar
UPDATE :
i don't recommend this way because of this issue
return Scaffold(
primary: true,
appBar: AppBar(
title: Text("Parent Scaffold"),
automaticallyImplyLeading: false,
),
body: Scaffold(
drawer: Drawer(),
),
);
Final Result :

Answer 2

I use the key in scaffold and references in leading in scaffold principal how in the example
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

Try this one:
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

Simple and to the point:
drawer: Padding(
padding: const EdgeInsets.fromLTRB(0, 80, 0, 0),
child: Drawer(),