我正在flutter中开发一个天气应用程序，我遇到了一个问题，我正在使用命名路径，我正在模态路径的帮助下访问参数，但在访问构建上下文之外的参数时，它显示错误“未定义名称”参数“。有谁能帮我一下吗？这会有很大的帮助，谢谢你，因为以前我使用构造函数在不同的屏幕之间传递数据，但它太乱了，所以我切换了到命名路由。
我的欢迎屏幕

import 'package:weather_app/utilities/constants.dart';

class WelcomeScreen extends StatefulWidget {
  const WelcomeScreen({Key? key}) : super(key: key);

  @override
  State<WelcomeScreen> createState() => _WelcomeScreenState();
}

class _WelcomeScreenState extends State<WelcomeScreen> {
  @override
  Widget build(BuildContext context) {
    final args = ModalRoute.of(context)!.settings.arguments as Map;
    return Scaffold(
      body: Container(
        color: kPrimaryColor,
        child: SafeArea(
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.stretch,
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              const SizedBox(
                height: 120,
              ),
              Image.asset(
                'images/welcome_screen_pic.png',
                height: 250,
              ),
              const SizedBox(
                height: 120,
              ),
              // ignore: prefer_const_constructors
              Text(
                'Discover the Weather\nin Your City',
                textAlign: TextAlign.center,
                style: kWelcomeScreenTitle,
              ),
              const SizedBox(
                height: 20,
              ),
              // ignore: prefer_const_constructors
              Text(
                textAlign: TextAlign.center,
                'Get to know your weather maps and\nradar precipitation forecast',
                style: kWelcomeScreenTagLine,
              ),
              const SizedBox(
                height: 60,
              ),
              Padding(
                padding: const EdgeInsets.all(8.0),
                child: TextButton(
                  onPressed: () {
                    Navigator.pushNamed(context, '/home-screen', arguments: {
                      'locationWeather': args['locationWeather'], //Here I am transferring data
                      'aQI': args['aQI'],
                      'cityName': args['cityName'],
                    });
                  },
                  child: Container(
                    height: 60,
                    decoration: const BoxDecoration(
                        color: kYellowcolor,
                        borderRadius: BorderRadius.all(Radius.circular(15))),
                    child: const Center(
                      child: Text(
                        'Get Started',
                        style: kWelcomeScreenButton,
                      ),
                    ),
                  ),
                ),
              )
            ],
          ),
        ),
      ),
    );
  }
}

主屏幕的某个部分

const HomeScreen({Key? key}) : super(key: key);

  @override
  State<HomeScreen> createState() => _HomeScreenState();
}

class _HomeScreenState extends State<HomeScreen> {
  WeatherModel weather = WeatherModel();
  late int temperature;
  late Widget weatherIcon;
  late String cityName;
  late double windSpeed;
  late String description;
  late int humidity;
  late String time;
  
  List<dynamic> forecastHourlyTemp = [];
  List<int> forecastHourlyTime = [];
  List<int> forecastHourlyWeatherIcon = [];
  List<dynamic> forecastHourlyPOP = [];
  List<CardItem> items = [];
  @override
  void initState() {
    updateUI(args['locationWeather'], args['aQI'], args['cityName']);  //Here I am getting error like it is saying args is undefined
    forecastHourlyTempAdd(args['locationWeather']);
    forecastHourlyTimeAdd(args['locationWeather']);
    forecastHourlyWeatherIconAdd(args['locationWeather']);
    forecastHourlyPOPAdd(args['locationWeather']);
    cardItemAdd(0);
    super.initState();
  }

  int i = 1;
  void forecastHourlyTempAdd(dynamic weatherData) {
    if (i <= 24) {
      forecastHourlyTemp.add(weatherData['hourly'][i]['temp']);
      i++;
      forecastHourlyTempAdd(args['locationWeather']);  //Here also
    }
  }

  int j = 1;
  void forecastHourlyTimeAdd(dynamic weatherData) {
    if (j <= 24) {
      forecastHourlyTime.add(weatherData['hourly'][j]['dt']);
      j++;
      forecastHourlyTimeAdd(args['locationWeather']);//Here also
    }
  }

  int k = 1;
  void forecastHourlyWeatherIconAdd(dynamic weatherData) {
    if (k <= 24) {
      forecastHourlyWeatherIcon
          .add(weatherData['hourly'][k]['weather'][0]['id']);
      k++;
      forecastHourlyWeatherIconAdd(args['locationWeather']);//Here also
    }
  }

  int l = 1;
  void forecastHourlyPOPAdd(dynamic weatherData) {
    if (l <= 24) {
      forecastHourlyPOP.add(weatherData['hourly'][l]['pop']);
      l++;
      forecastHourlyPOPAdd(args['locationWeather']);//Here also
    }
  } ```