Xamarin 表单 ASP.NET android 模拟器无法访问 localhost API

我正在开发一个使用 ASP.NET Web 应用程序模板的 Xamarin 表单应用程序。我在 YouTube 上关注了这个教程。我在使用 PostAsync 方法时遇到问题。web api 本身可以通过我本地机器上的 IIS Chrome 启动，但不能通过模拟器启动。我打印了响应消息，显示为

StatusCode: 400, ReasonPhrase: 'Bad Request', Version: 1.1, Content: 
System.Net.Http.HttpConnection+HttpConnectionResponseContent, Headers:
{
  Server: Microsoft-HTTPAPI/2.0
  Date: Sun, 26 Sep 2021 06:53:22 GMT
  Connection: close
  Content-Type: text/html; charset=us-ascii
  Content-Length: 334
}

这是包含 RegisterAsync 方法的服务类

public class UserService
{

    private string androidApiUrl = "https://10.0.2.2:44358/api/Account/Register";
    private string iOSApiUrl = "https://localhost:44358/api/Account/Register";
    private HttpClient client;
  
    public UserService()
    {
        var httpClientHandler = new HttpClientHandler();
        httpClientHandler.ServerCertificateCustomValidationCallback =
            (msg, cert, chain, err) => { return true; };
        client = new HttpClient(httpClientHandler);
        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

    }
    public async Task<bool> RegisterAsync(string username, string pswd, string confmPswd)
    {
        var newAccount = new ModelAccount
        {
            Email = username,
            Password = pswd,
            ConfirmPassword = confmPswd
        };

      
        
        var json = JsonConvert.SerializeObject(newAccount);
        HttpContent content = new StringContent(json);

        content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/json")
        {
            CharSet = Encoding.UTF8.WebName
        };

        try
        {
            var response = await client.PostAsync(androidApiUrl, content);
            Console.WriteLine(response.ToString());
            Console.WriteLine(response.ReasonPhrase);
            Console.WriteLine(response);
            return response.IsSuccessStatusCode;

        }
        catch (Exception e)
        {
            Console.WriteLine(e.ToString());
            throw e;
        }
    }
}

这是 WebAPI 的属性...

这是 json 序列化的 ModelConvert。

class ModelAccount
    {
        public string Email { get; set; }
        public string Password { get; set; }
        
        public string ConfirmPassword { get; set; }
    }

如果我按照本博客的建议将端口号更改为 61902 会有所不同，它仍然无法正常工作。

谢谢

编辑：根据@Aristos 的要求，这里是连接的端口号。