如何在flutter中实现无限滚动分页？

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Infinite Scroll Pagination')),
        body: InfiniteScrollPagination(),
      ),
    );
  }
}

class InfiniteScrollPagination extends StatefulWidget {
  @override
  _InfiniteScrollPaginationState createState() => _InfiniteScrollPaginationState();
}

class _InfiniteScrollPaginationState extends State<InfiniteScrollPagination> {
  final ScrollController _scrollController = ScrollController();
  List<int> _data = [];
  int _page = 0;
  bool _isLoading = false;

  @override
  void initState() {
    super.initState();
    _loadMoreData();
    _scrollController.addListener(_scrollListener);
  }

  @override
  void dispose() {
    _scrollController.removeListener(_scrollListener);
    _scrollController.dispose();
    super.dispose();
  }

  void _scrollListener() {
    if (_scrollController.position.pixels == _scrollController.position.maxScrollExtent) {
      _loadMoreData();
    }
  }

  Future<void> _loadMoreData() async {
    if (_isLoading) return;
    setState(() {
      _isLoading = true;
    });
    await Future.delayed(Duration(seconds: 2)); // Simulate network call
    setState(() {
      for (int i = 0; i < 20; i++) {
        _data.add((_page * 20) + i);
      }
      _page++;
      _isLoading = false;
    });
  }

  @override
  Widget build(BuildContext context) {
    return ListView.builder(
      controller: _scrollController,
      itemCount: _data.length + 1,
      itemBuilder: (context, index) {
        if (index < _data.length) {
          return ListTile(title: Text('Item ${_data[index]}'));
        } else {
          return Center(child: CircularProgressIndicator());
        }
      },
    );
  }
}