KSoap veri çekme?

XML bu şekilde. Ben android studio da burdakilerden birini textview e yazdırmak istiyorum ama null geliyor.

Kodları:

package com.example.asus34.akinsoftentegrasyon;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.os.AsyncTask;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.PropertyInfo;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapPrimitive;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;
import org.xmlpull.v1.XmlPullParserException;

import java.io.IOException;
import java.lang.reflect.Array;

public class MainActivity extends AppCompatActivity {

    private final String NAMESPACE = "http://192.168.56.1/";
    private final String URL = "http://192.168.56.1/WebServis/AkinsoftRaporlar.asmx";
    private final String SOAP_ACTION = "192.168.1.4/CariHareketGetir";
    private final String METHOD_NAME = "CariHareketGetir";
    private String TAG = "PGGURU";
    private static String fahren;
    Button b;
    TextView tv;
    EditText et1;
    EditText et2;
    ListView lv;
    int s1;
    String CariKodu;
    Array myObjectArray;


    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //Celcius Edit Control
        et1 = (EditText) findViewById(R.id.editText1);
        et2 = (EditText) findViewById(R.id.editText2);
        //Fahrenheit Text control
        tv = (TextView) findViewById(R.id.tv_result);
        //Button to trigger web service invocation
        b = (Button) findViewById(R.id.button1);
        lv = (ListView) findViewById(R.id.listView);

        //Button Click Listener
        b.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                //Check if Celcius text control is not empty

                    //Create instance for AsyncCallWS
                    AsyncCallWS task = new AsyncCallWS();
                    //Call execute
                    task.execute();

            }
        });
    }
    private class AsyncCallWS extends AsyncTask<String, Void, Void> {
        @Override
        protected Void doInBackground(String... params) {
            Log.i(TAG, "doInBackground");
           CariHareket();
            return null;
        }

        @Override
        protected void onPostExecute(Void result) {
            Log.i(TAG, "onPostExecute");

            tv.setText("Sonuc:" + fahren);
        }

        @Override
        protected void onPreExecute() {
            Log.i(TAG, "onPreExecute");
            tv.setText("Hesaplanıyor...");
        }

        @Override
        protected void onProgressUpdate(Void... values) {
            Log.i(TAG, "onProgressUpdate");
        }

    }

    private class MetotCalistir extends AsyncTask<String, Void, Void> {
        @Override
        protected Void doInBackground(String... params) {
            Log.i(TAG, "doInBackground");
            CariHareket();
            return null;
        }

        @Override
        protected void onPostExecute(Void result) {
            Log.i(TAG, "onPostExecute");
          
        }

        @Override
        protected void onPreExecute() {
            Log.i(TAG, "onPreExecute");
            tv.setText("Hesaplanıyor...");
        }

        @Override
        protected void onProgressUpdate(Void... values) {
            Log.i(TAG, "onProgressUpdate");
        }

    }

    public void CariHareket()
    {

        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
        //Property which holds input parameters
        PropertyInfo Cari1 = new PropertyInfo();
        //Set Name
        Cari1.setName("Carikodu");
        //Set Value
        Cari1.setValue(CariKodu);
        //Set dataType
        Cari1.setType(String.class);
        //Add the property to request object
        request.addProperty(Cari1);
        //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 {
            //Invole web service
            androidHttpTransport.call(SOAP_ACTION, envelope);
            //Get the response
            SoapPrimitive response = (SoapPrimitive) envelope.getResponse();
            //Assign it to fahren static variable
            fahren = response.toString();
            tv.setText(response.toString());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }



    

}