Typically a Drawer.
To open the drawer, use the ScaffoldState.openDrawer function.
To disable the drawer edge swipe on mobile, set the Scaffold.drawerEnableOpenDragGesture to false. Then, use ScaffoldState.openDrawer to open the drawer and Navigator.pop to close it.link
To create a local project with this code sample, run:
flutter create --sample=material.Scaffold.drawer.1 mysample
final Widget? drawer;