DemoHomePage.dart

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> {
  List<int> data = [];
  int currentLength = 0;

  final int increment = 10;

  @override
  void initState() {
    _loadMore();
    super.initState();
  }

  void _loadMore() {
    setState(() {
      for (var i = currentLength; i <= currentLength + increment; i++) {
        data.add(i);
      }
      currentLength = data.length;
    });
  }

  @override
  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(
        title: new Text(widget.title),
      ),
      body: LazyLoadScrollView(
        onEndOfPage: () => _loadMore(),
        child: ListView.builder(
          itemCount: data.length,
          itemBuilder: (context, position) {
            return new DemoItem(position);
          },
        ),
      ),
    );
  }
}