Go to specific section when button clicked in flutter - flutter

Question

I am trying to navigate the section on the same page when the button is clicked but I can not do it using PageView and Scroll, Does anyone know how to do it?
This is the navigation bar on the top of the page and I want it to go to specific section on the same page when the button is clicked.
this is my code:
Row(
children: [
NavItem(
title: 'Home',
onPreesed: () {},
color: KprimaryColor,
fontWeight: FontWeight.w900,
),
NavItem(
title: 'About',
onPreesed: () {},
color: Colors.black,
fontWeight: FontWeight.normal,
),
NavItem(
title: 'Projects',
onPreesed: () {},
color: Colors.black,
fontWeight: FontWeight.normal,
),
NavItem(
title: 'Contact',
onPreesed: () {},
color: Colors.black,
fontWeight: FontWeight.normal,
),

Answer 1

Please, try this!
class MyAppTabView extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
home: DefaultTabController(
length: 4,
child: Scaffold(
appBar: AppBar(
backgroundColor: Colors.white,
title: Text('Flutter Tabs', style: TextStyle(color: Colors.black)),
bottom: const PreferredSize(
preferredSize: Size.fromHeight(40),
child: Align(
alignment: Alignment.centerRight,
child: TabBar(
isScrollable: true,
unselectedLabelStyle: TextStyle(fontWeight: FontWeight.normal),
unselectedLabelColor: Colors.black,
indicatorSize: TabBarIndicatorSize.label,
indicatorColor: Colors.transparent,
labelColor: Colors.red,
labelStyle: TextStyle(fontWeight: FontWeight.bold),
tabs: [
Tab(
child: Padding(
padding: EdgeInsets.symmetric(horizontal: 20),
child: Center(
child: Text("Home"),
),
),
),
Tab(
child: Padding(
padding: EdgeInsets.symmetric(horizontal: 20),
child: Center(
child: Text("About"),
),
),
),
Tab(
child: Padding(
padding: EdgeInsets.symmetric(horizontal: 20),
child: Center(
child: Text("Projects"),
),
),
),
Tab(
child: Padding(
padding: EdgeInsets.symmetric(horizontal: 20),
child: Center(
child: Text("Contact"),
),
),
),
]),
),
),
),
body: TabBarView(
children: [
Center(child: Text("Home")),
Center(child: Text("About")),
Center(child: Text("Projects")),
Center(child: Text("Contact")),
],
),
),
),
);
}
}
Enjoy Coding!!