我的toggleButton有问题，不清楚问题在哪里。当我运行下面的代码时，切换按钮会出现在所需的位置，并且也可以根据需要进行支付。但是，它们始终仅为默认颜色（选中时为蓝色背景，未选中时为无背景），而不是ToggleButtons中定义的颜色。我已经尝试了一些事情，比如将列表定义为List<List<bool>>和List<List<Widget>>，这是我在其他问题中找到的解决方案。但是，在initState()中生成的列表、setState()方法、isSelected和子对象上都出现了错误。谢谢你的帮助
代码：

import 'package:calendar_vertical/provider/toggle_provider.dart';
import 'package:calendar_vertical/provider/user_model.dart';
import 'package:calendar_vertical/widgets/user_item.dart';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';

class ToggleButtonUsers extends StatefulWidget {
  @override
  _ToggleButtonUsersState createState() => _ToggleButtonUsersState();
}

class _ToggleButtonUsersState extends State<ToggleButtonUsers> {
  bool vertical = false;
  List<bool> selectedUser = [];
  //final List<Widget> children = [];
  List<Widget> selectedChildren = [];

  @override
  void initState() {
    final userModelData = Provider.of<UserModel>(context, listen: false);
    final userModel = userModelData.items;
    final toggleModelData = Provider.of<ToggleProvider>(context, listen: false);
    final toggleModel = toggleModelData.items;

    for (var index = 0; index < toggleModel.length; index += 1) {
      selectedUser = List.generate(
        toggleModel.length,
        (index) => index == 0 ? true : false,
      );

      selectedChildren = List.generate(
        toggleModel.length,
        (index) => UserItem(
          userModel[index].id,
          userModel[index].name,
          userModel[index].image,
          userModel[index].color,
        ),
      );
    }
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.all(8.0),
      child: ToggleButtons(
        constraints: const BoxConstraints(
          minHeight: 40.0,
          maxHeight: 45,
          minWidth: 80.0,
          maxWidth: 85,
        ),
        selectedBorderColor: Colors.green,
        disabledBorderColor: Colors.red,
        direction: vertical ? Axis.vertical : Axis.horizontal,
        onPressed: (int index) {
          setState(() {
            selectedUser[index] = !selectedUser[index];
          });
          debugPrint('selected User ist nun: ' + selectedChildren.toString());
        },
        children: selectedChildren,
        isSelected: selectedUser,
      ),
    );
  }
}