Vertical swipe for next item example

Here is an example to get the next item on a vertical swipe.  

import 'package:flutter/material.dart';

main(List<String> args) {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);
  @
override

  Widget build(BuildContext context) {
    return const MaterialApp(
      home: Scaffold(body: MyverticalSwiper()),
    );
  }
}

class MyverticalSwiper extends StatelessWidget {
  const MyverticalSwiper({Key? key}) : super(key: key);
  @
override

  Widget build(BuildContext context) {
    return DefaultTabController(
      length: 3,
      initialIndex: 0,
      child: RotatedBox(
        quarterTurns: 1,
        child: TabBarView(
          children: [
            Container(
              color: Colors.red,
            ),
            Container(
              color: Colors.green,
            ),
            Container(
              color: Colors.blue,
            ),
          ],
        ),
      ),
    );
  }
}

Thanks,