`class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;


  ScrollController scrollController= new ScrollController();
  void _incrementCounter() {
    setState(() {
      // This call to setState tells the Flutter framework that something has
      // changed in this State, which causes it to rerun the build method below
      // so that the display can reflect the updated values. If we changed
      // _counter without calling setState(), then the build method would not be
      // called again, and so nothing would appear to happen.
      _counter++;
    });
  }

  @override
  void initState() {
    // TODO: implement initState
    super.initState();
    scrollController.addListener(() {
      var index=scrollController.offset;
      print("这个数是输出的$index");
    });
  }

  @override
  Widget build(BuildContext context) {
    // This method is rerun every time setState is called, for instance as done
    // by the _incrementCounter method above.
    //
    // The Flutter framework has been optimized to make rerunning build methods
    // fast, so that you can just rebuild anything that needs updating rather
    // than having to individually change instances of widgets.
    return Scaffold(
      appBar: AppBar(
        // Here we take the value from the MyHomePage object that was created by
        // the App.build method, and use it to set our appbar title.
        title: Text(widget.title),
      ),
      body: ListView.builder(itemBuilder: (BuildContext context,int index){
        return  ItemWidget();


      },itemCount: 30,
      controller: scrollController,
    ),



      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: Icon(Icons.add),
      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }

  Widget ItemWidget(){

    return Container(
      decoration: BoxDecoration(
        borderRadius: BorderRadius.circular(5),
        //color: Colors.pinkAccent,
      ),
      height: 90,
      width: MediaQuery.of(context).size.width,
      child: Stack(
        children: <Widget>[
          Positioned(
            top: 0,
            left: 2,
            child: Text('标题',style: TextStyle(color: Colors.pinkAccent),),
          ),
          Positioned(
            top: 15,
            left: 2,
            child: Container(
              height: 45,
              width: MediaQuery.of(context).size.width,
              child: ListView.builder(
                controller: scrollController,
                  scrollDirection:Axis.horizontal,
                  itemCount: 10,itemBuilder: (BuildContext context,int index){
                return Container(
                  height: 40,
                  width: 40,
                  margin: EdgeInsets.all(5),
                  color: Colors.blue,
                );
              }),
            )

          ),
          Positioned(
            top: 70,
            left: 5,
            child: Text('稀释舒克舒克快速开始可快速开始'),
          ),

        ],
      ),
    );
  }
}`