content: import 'package:example/csv_example.dart';
  import 'package:flutter/material.dart';
  
  import 'my_list.dart';
  import 'video_list.dart';
  
  void main() => runApp(MyApp());
  
  class MyApp extends StatelessWidget {
    @override
    Widget build(BuildContext context) {
      return MaterialApp(
        home: Container(
          color: Colors.grey.shade300,
          child: HomePage(),
        ),
      );
    }
  }
  
  class HomePage extends StatefulWidget {
    @override
    _HomePageState createState() => _HomePageState();
  }
  
  class _HomePageState extends State<HomePage> {
    final List<Tab> myTabs = <Tab>[
      Tab(text: 'Example 1'),
      Tab(text: 'Example 2'),
      Tab(text: 'Autoplay Video'),
      Tab(text: 'Custom Scroll View'),
    ];
  
    @override
    Widget build(BuildContext context) {
      return DefaultTabController(
        length: myTabs.length,
        child: Scaffold(
          backgroundColor: Colors.grey.shade300,
          appBar: AppBar(
            title: Text('ÍnViewNotifierList'),
            centerTitle: true,
            bottom: TabBar(
              tabs: myTabs,
            ),
          ),
          body: TabBarView(
            children: <Widget>[
              MyList(
                key: ValueKey("list1"),
                initialInViewIds: ['0'],
                inViewArea: Container(
                  height: 1.0,
                  color: Colors.redAccent,
                ),
              ),
              MyList(
                initialInViewIds: ['0'],
                inViewPortCondition:
                    (double deltaTop, double deltaBottom, double vpHeight) {
                  return (deltaTop < (0.5 * vpHeight) + 100.0 &&
                      deltaBottom > (0.5 * vpHeight) - 100.0);
                },
                inViewArea: Container(
                  height: 200.0,
                  color: Colors.redAccent.withOpacity(0.2),
                ),
              ),
              VideoList(),
              CSVExample(),
            ],
          ),
        ),
      );
    }
  }
  