vertical tabbar flutter

main.dart

import 'package:flutter/material.dart';
import 'dart:math';

void main() {
  runApp(TabBarDemo());
}

class TabBarDemo extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: DefaultTabController(
        length: 3,
        child: Scaffold(
          appBar: AppBar(
            title: Text('Tabs Demo Test'),
          ),
          body: Row(
            mainAxisSize: MainAxisSize.max,
            children: [
              Container(
                  color: Colors.blue,
                  child: RotatedBox(
                      quarterTurns: 1,
                      child: TabBar(
                        tabs: [
                          Tab(
                              icon: Transform.rotate(
                                  angle: -90 * pi / 180,
                                  child: Icon(Icons.directions_car))),
                          Tab(
                              icon: Transform.rotate(
                                  angle: -90 * pi / 180,
                                  child: Icon(Icons.directions_transit))),
                          Tab(
                              icon: Transform.rotate(
                                  angle: -90 * pi / 180,
                                  child: Icon(Icons.directions_bike)))
                        ],
                      ))),
              Expanded(
                  child: TabBarView(
                children: [
                  Icon(Icons.directions_car),
                  Icon(Icons.directions_transit),
                  Icon(Icons.directions_bike),
                ],
              ))
            ],
          ),
        ),
      ),
    );
  }
}