سلام دوستان من تو برنامه نویسی اندروید تازه کارم

یه وب سرویس با php و nusoap درست کردم (البته تست شده و آنلاین جواب میده) که کدش زیر گذاشتم 


<?php

// Pull in the NuSOAP

require_once('lib/nusoap.php');

// Create the server instance

$server = new soap_server();

// Initialize WSDL support



$server->configureWSDL('MyService', 'urn:MyService');

        // Character encoding

        $server->soap_defencoding = 'utf-8';

        //-------------------------------------------------

        //Registrations of our functions

        //Register GetData function

                $server->register(

                        'GetDataAbout',

                        array('id' => 'xsd:int'),

                        array('return' =>'xsd:string'),

                          'urn:MyServicewsdl',

                        'urn:MyServicewsdl#GetDataAbout',

                        'rpc',

                        'literal',

                        'Some comments about function 2'

                    );

                //-----

        //-------------------------------------------------

        //Our web service functions will be here.

        //Body GetData function

                function GetDataAbout($id) {

                    mysql_connect("localhost","***","***");

        mysql_select_db("***");

        mysql_query('SET NAMES \'utf8\'');

                            mysql_query('SET NAMES \'utf8\'');

                      $sql = "SELECT content FROM tblabout WHERE id = '$id'";

                            $result = mysql_fetch_array(mysql_query($sql));

                            return $result['content'];

                }

        //-------------------------------------------------

        $HTTP_RAW_POST_DATA = isset($HTTP_RAW_POST_DATA) ? $HTTP_RAW_POST_DATA : '';

        $server->service($HTTP_RAW_POST_DATA);

?>


و می خوام تو اندروید فراخوانی کنم با کد های زیر

کد HTML:
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.widget.TextView;

import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.PropertyInfo;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;

import java.io.IOException;

/**
 * Created by Novin Pendar on 06/26/2015.
 */
public class AboutActivity extends ActionBarActivity {
    private static final String SOAP_ACTION = "urn:MyService#GetDataAbout";
    private static final String METHOD_NAME = "GetDataAbout";
    private static final String NAMESPACE = "urn:MyService";
    private static final String URL = "http://service.abdollahtamimi.com/server.php";

    TextView v = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.layout_about);




        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);

        //SoapObject
        request.addProperty("id", "1");
        //Create envelope
        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
        envelope.dotNet = true;
        //Set output SOAP object
        envelope.setOutputSoapObject(request);
        //Create HTTP call object
        HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);

        try
        {
            androidHttpTransport.call(SOAP_ACTION, envelope);
            //Object response = envelope.getResponse();
            Object response = envelope.bodyIn;
            ((TextView)findViewById(R.id.txtWebService)).setText(response.toString());
        }

        catch (Exception exception)
        {
            ((TextView)findViewById(R.id.txtWebService)).setText(exception.toString());
        }
    }
}
اما موقع اجرا خطای java.io.ioexception را میده

حال باید چکار کنم مشکل کدم کجاست

کل کار وب سرویسم یه id می گیره و محتوای فیلد contentشو نشون میده همین