Tab Slide Example

import 'package:flutter/material.dart';

void main() => runApp(new MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      title: 'Flutter Demo',
      home: new MyHomePage(title: 'Flutter Test Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

  @override
  _MyHomePageState createState() => new _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _myValue = 60;

  @override
  Widget build(BuildContext context) {
    return DefaultTabController(
        length: 3,
        child: new Scaffold(
          appBar: new AppBar(
            title: new Text(widget.title),
            bottom: TabBar(
              tabs: [
                Tab(icon: Icon(Icons.directions_car)),
                Tab(icon: Icon(Icons.directions_transit)),
                Tab(icon: Icon(Icons.directions_bike)),
              ],
            ),
          ),
          body: new TabBarView(children: <Widget>[
            new Center(
              child: new Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: <Widget>[
                  new Slider(
                    value: _myValue.toDouble(),
                    min: 1.0,
                    max: 100.0,
                    divisions: 10,
                    label: '$_myValue',
                    onChanged: (double newValue) {
                      setState(() {
                        _myValue = newValue.round();
                      });
                    },
                    onChangeEnd: (double newValue) {
                      print('Ended change on $newValue');
                    },
                  ),
                ],
              ),
            ),
            new Icon(Icons.directions_transit),
            new Icon(Icons.directions_bike),
          ]),
          // This trailing comma makes auto-formatting nicer for build methods.
        ));
  }
}