I am trying to use this package load more in fllutter but the example doesn't work - flutter

Question

I am trying this example, but nothing is shown on the screen of the emulator, any help?? this example is in flutter packages but it doesn't work
Hello, I am trying this example, but nothing is shown on the screen of the emulator, any help?? this example is in flutter packages but it doesn't work
`
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 get count => list.length;
List<int> list = [];
void initState() {
super.initState();
// list.addAll(List.generate(30, (v) => v));
}
void load() {
print("load");
setState(() {
list.addAll(List.generate(15, (v) => v));
print("data count = ${list.length}");
});
}
#override
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text(widget.title),
),
body: Container(
child: RefreshIndicator(
child: LoadMore(
isFinish: count >= 60,
onLoadMore: _loadMore,
child: ListView.builder(
itemBuilder: (BuildContext context, int index) {
return Container(
child: Text(list[index].toString()),
height: 40.0,
alignment: Alignment.center,
);
},
itemCount: count,
),
whenEmptyLoad: false,
delegate: DefaultLoadMoreDelegate(),
textBuilder: DefaultLoadMoreTextBuilder.chinese,
),
onRefresh: _refresh,
),
),
);
}
Future<bool> _loadMore() async {
print("onLoadMore");
await Future.delayed(Duration(seconds: 0, milliseconds: 2000));
load();
return true;
}
Future<void> _refresh() async {
await Future.delayed(Duration(seconds: 0, milliseconds: 2000));
list.clear();
load();
}
}
`
Hello, I am trying this example, but nothing is shown on the screen of the emulator, any help??