我试图传递一个值（我的ListView.builder的当前索引号）给另一个函数。但我得到以下错误：
在构建BookFeederSearch（dirty，dependencies：）时抛出了以下RangeError：[_InheritedProviderScope<UserProvider？>]，state：BookFeederSearchState#3217f）：RangeError（index）：无效值：有效值范围为空：0
请看我的代码：

class Search2 extends StatefulWidget {
  static const String id = 'Search2';
  const Search2({super.key});

  @override
  State<Search2> createState() => _Search2State();
}

class _Search2State extends State<Search2> {
  bool _addToLibrary = false;

  List _allResults = [];
  List _resultList = [];

  final TextEditingController _searchController = TextEditingController();

  @override
  void initState() {
    _searchController.addListener(_onSearchChanged);
    //getClientStream();
    super.initState();
  }

  _onSearchChanged() {
    print(_searchController.text);
    searchResultList();
  }

  searchResultList() {
    var showResults = [];
    if (_searchController.text != "") {
      for (var clientSnapShot in _allResults) {
        var name = clientSnapShot['TitleEnglish'].toString().toLowerCase();
        if (name.contains(_searchController.text.toLowerCase())) {
          showResults.add(clientSnapShot);
        }
      }
    } else {
      showResults = List.from(_allResults);
    }
    setState(() {
      _resultList = showResults;
    });
  }

  getClientStream() async {
    var data = await FirebaseFirestore.instance
        .collection('Books')
        .orderBy('TitleEnglish')
        .get();
    setState(() {
      _allResults = data.docs;
    });
    searchResultList();
  }

  @override
  void dispose() {
    _searchController.removeListener(_onSearchChanged);
    _searchController.dispose();
    super.dispose();
  }

  @override
  void didChangeDependencies() {
    getClientStream();
    super.didChangeDependencies();
  }

  @override
  Widget build(BuildContext context) {
    final User? user = Provider.of<UserProvider>(context).getUser;
    return Scaffold(
      appBar: AppBar(
        leadingWidth: 120,
        backgroundColor: const Color(
          (0XFF293D63),
        ),
        leading: IconButton(
          onPressed: () {
            //print('Go Back Pressed');
            Navigator.pop(context);
          },
          icon: SvgPicture.asset('images/button_goback_clean_svg.svg'),
        ),
        title: const Text(
          'SEARCH',
          style: TextStyle(
            fontFamily: 'Sigmar',
            fontSize: 20.0,
          ),
        ),
        centerTitle: true,
      ),
      //below links to history_book.dart
      //SingleChildScrollView avoids keyboard overflow
      body: Column(
        // crossAxisAlignment: CrossAxisAlignment.center,
        // mainAxisSize: MainAxisSize.max,
        // mainAxisAlignment: MainAxisAlignment.end,
        children: [
          Container(
            height: 50,
            width: 500,
            padding: const EdgeInsets.symmetric(horizontal: 20),
            decoration: BoxDecoration(
              // color: Color(0xFF5F94AF),
              color: Colors.blue[100],
              // border: Border.all(width: 10, color: Colors.white),

              borderRadius: const BorderRadius.only(
                bottomLeft: Radius.circular(30.0),
                bottomRight: Radius.circular(30.0),
              ),
            ),
            child: CupertinoSearchTextField(
              //done with opacity so it has no colour
              backgroundColor: Colors.white.withOpacity(0),
              controller: _searchController,
              placeholder: 'Search for book title',

              style: const TextStyle(
                fontFamily: 'NotoBold',
                fontSize: 15.0,
                color: Color((0XFF293D63)),
              ),
            ),
          ),
          Expanded(
            child: ListView.builder(
              //scrollDirection: Axis.horizontal,
              itemCount: _resultList.length,
              itemBuilder: ((context, index) {
                return Align(
                  alignment: Alignment.topCenter,
                  // this will have the folders overlap each other (set to 0.5)
                  heightFactor: 0.2,
                  child: Column(
                    children: [
                      Container(
                        height: 20,
                      ),
                      Row(
                        children: [
                          Container(
                            width: 200,
                          ),
                          Container(
                            width: 400,
                            height: 40,
                            decoration: BoxDecoration(
                              // color: Color(0xFF5F94AF),
                              color: Colors.blue[100],
                              // border: Border.all(width: 10, color: Colors.white),

                              borderRadius: const BorderRadius.only(
                                topLeft: Radius.circular(30.0),
                                topRight: Radius.circular(30.0),
                              ),
                            ),
                            alignment: Alignment.centerLeft,
                            padding: EdgeInsets.fromLTRB(20, 0, 20, 0),
                            child: InkWell(
                              onTap: () {
                                //To navigate to the next page (shows folder) and pass in the index numbers
                                final indexPage = index;
                                print('$indexPage, Open Folder');

                                Navigator.of(context).push(
                                  MaterialPageRoute(
                                    builder: (context) =>
                                        BookFeederSearch(indexPage),
                                  ),
                                );
                              },

字符串
我不知道是什么导致了这个问题。我已经通过打印值进行了检查，但它确实得到了正确的输入。我以前给其他类传递过值，没有遇到过问题，但不是在ListView.builder中。所以我猜这是问题的原因，但找不到解决办法。非常感谢你的帮助。