从android调用Asp.net Web服务

Question

我有asp.net web服务，它返回Book Objects列表 我怎样才能在android中收到这个对象 这是我的网络服务

    [WebMethod]
    public List<Object> connectoSql()
    {
        Connect();
        SqlCommand cmdMySQL = cnMySQL.CreateCommand();

        SqlDataReader reader;
        Book book = new Book();
        List<Object> bookobject = new List<Object>();
        cmdMySQL.CommandText = "select Name from Category where parentCategoryId is NULL";

        cnMySQL.Open();

        reader = cmdMySQL.ExecuteReader();
       // List<Book> user = new List<Book>();
        while (reader.Read())
        {
            String username = reader["Name"] as String;
            book.setTitle(username);
            book.setid(000);
            bookobject.Add(book);


        }

这是我的Book Book Object

 public class Book
 {
    private String title;
    private int id;

    public String getTitle() {
        return title;
    }
    public void setTitle(String title)
    {
        this.title=title;
    }

    public int getid()
    {
        return id;
    }
    public void setid(int id)
    {
        this.id = id;
    }

    public String toString()
    {
        return title;
    }
      }
  }

这是我尝试获取响应但结果为空

          try {

        httpTransport.call(SOAP_ACTION, envelope);
        SoapObject oo =  (SoapObject)envelope.getResponse();
         oo.getPropertyCount();
        for (int i = 0; i < oo.getPropertyCount(); i++) {
            Book book = (Book)oo.getProperty(i);
                            String title=book.getTitle();
                             int id=book.getid();

        }




    } catch (Exception exception) {
        // response = exception.toString();
    }

是的，任何人都可以帮助我