在知道应用程序内部的信息在另一个类中以列表形式存在的情况下，如何在flutter中使用搜索

import 'package:flutter/material.dart';

class MySearchApp extends StatefulWidget {
  @override
  _MySearchAppState createState() => _MySearchAppState();
}

class _MySearchAppState extends State<MySearchApp> {
  List<String> dataList = [
    "Apple",
    "Banana",
    "Cherry",
    "Durian",
    "Grape",
    "Lemon",
    "Mango",
    "Orange",
    "Peach",
    "Strawberry",
  ];

  List<String> filteredList = [];

  void filterSearchResults(String query) {
    if (query.isNotEmpty) {
      List<String> tempList = [];
      dataList.forEach((item) {
        if (item.toLowerCase().contains(query.toLowerCase())) {
          tempList.add(item);
        }
      });
      setState(() {
        filteredList.clear();
        filteredList.addAll(tempList);
      });
      return;
    } else {
      setState(() {
        filteredList.clear();
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("Search App"),
      ),
      body: Column(
        children: [
          Padding(
            padding: const EdgeInsets.all(8.0),
            child: TextField(
              onChanged: (value) {
                filterSearchResults(value);
              },
              decoration: InputDecoration(
                labelText: "Search",
                prefixIcon: Icon(Icons.search),
                border: OutlineInputBorder(
                  borderRadius: BorderRadius.all(
                    Radius.circular(25.0),
                  ),
                ),
              ),
            ),
          ),
          Expanded(
            child: ListView.builder(
              itemCount: filteredList.length,
              itemBuilder: (BuildContext context, int index) {
                return ListTile(
                  title: Text(filteredList[index]),
                );
              },
            ),
          ),
        ],
      ),
    );
  }
}

void main() {
  runApp(MaterialApp(
    home: MySearchApp(),
  ));
}