如何在flutter中聚焦listView的最后一项

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('Focus ListView Last Item')),
        body: FocusLastItemListView(),
      ),
    );
  }
}

class FocusLastItemListView extends StatefulWidget {
  @override
  _FocusLastItemListViewState createState() => _FocusLastItemListViewState();
}

class _FocusLastItemListViewState extends State<FocusLastItemListView> {
  final ScrollController _scrollController = ScrollController();

  @override
  void initState() {
    super.initState();
    // 假设数据加载完成后，延迟一段时间滚动到列表末尾
    Future.delayed(Duration(seconds: 1), () {
      _scrollToLastItem();
    });
  }

  @override
  void dispose() {
    _scrollController.dispose(); // 记得释放控制器资源
    super.dispose();
  }

  void _scrollToLastItem() {
    if (_scrollController.hasClients) {
      _scrollController.animateTo(
        _scrollController.position.maxScrollExtent,
        duration: Duration(milliseconds: 500),
        curve: Curves.easeInOut,
      );
    }
  }

  @override
  Widget build(BuildContext context) {
    return ListView.builder(
      controller: _scrollController,
      itemCount: 100, // 假设有100项数据
      itemBuilder: (context, index) {
        return ListTile(title: Text('Item $index'));
      },
    );
  }
}