Android app crashes when connecting to webservice LOCAL [duplicate]

Question 1

You need to use asynctask to work with web service calls,

package com.example.ejemplosoap;

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 android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.View;

public class MainActivity extends Activity {

//Napespace definido en el servicio web
private final String namespace = "http://ws.webapp.org/";
//Fichero de definicion del servicio web
private final String url = "http://10.0.2.2:8080/WebServiceServer/services/Hello";
//namespace + metodo
private final String accionSoap = "http://ws.webapp.org/sayHello";
//Metodo que queremos ejecutar en el servicio web
private final String Metodo = "sayHello";

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

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

public void onClickLogin(View view){

    new ServiceCallTask().execute();
}

class ServiceCallTask extends AsyncTask<String, String, String>
{

    @Override
    protected String doInBackground(String... params) {
        try {

            System.out.println("1");
            // Modelo el request
            SoapObject request = new SoapObject(namespace, Metodo);
            //request.addProperty("name", "Juan!"); // Paso parametros al WS
            PropertyInfo primerParametro = new PropertyInfo ();
            System.out.println("2");
            primerParametro.setName("name");
            primerParametro.setValue("Juan");
            request.addProperty(primerParametro);
            System.out.println("3");
            // Modelo el Sobre
            SoapSerializationEnvelope sobre = new         SoapSerializationEnvelope(SoapEnvelope.VER11);
            //si esta hecho o no en puntoNet
            sobre.dotNet = false;
            sobre.setOutputSoapObject(request);
            System.out.println("4");

            // Modelo el transporte
            HttpTransportSE transporte = new HttpTransportSE(url);
            System.out.println("5");

            // Llamada
            transporte.call(accionSoap, sobre);
            System.out.println("6");

            // Resultado
           // SoapPrimitive resultado = (SoapPrimitive) sobre.getResponse();
            String cadenaDevuelta =(String) sobre.getResponse();
            Log.i("Resultado", cadenaDevuelta);

        } catch (Exception e) {
            Log.e("MainActivity", "ERROR");
                    e.printStackTrace();
        }
        return null;
    }


}



}

Refer this to learn more about asynctask http://developer.android.com/reference/android/os/AsyncTask.html

Question 2

android.os.NetworkOnMainThreadException

You are running a network operation in the main thread which is not allowed, do the operation in another thread.

Either use AsyncTask and do the call in the doInBackground method, or create a new Thread() and do the call in the run method.

Question 3

public void onClickLogin(View view){    

Runnable runnable = new Runnable() {
                        public void run() {
                                 runOnThread();
                                };
                    Thread mythread = new Thread(runnable);
                    mythread.start();

                }
    }


//=====
    public void runOnThread(){

    System.out.println("1");
            // Modelo el request
            SoapObject request = new SoapObject(namespace, Metodo);
            //request.addProperty("name", "Juan!"); // Paso parametros al WS
            PropertyInfo primerParametro = new PropertyInfo ();
            System.out.println("2");
            primerParametro.setName("name");
            primerParametro.setValue("Juan");
            request.addProperty(primerParametro);
            System.out.println("3");
            // Modelo el Sobre
            SoapSerializationEnvelope sobre = new         SoapSerializationEnvelope(SoapEnvelope.VER11);
            //si esta hecho o no en puntoNet
            sobre.dotNet = false;
            sobre.setOutputSoapObject(request);
            System.out.println("4");

            // Modelo el transporte
            HttpTransportSE transporte = new HttpTransportSE(url);
            System.out.println("5");

            // Llamada
            transporte.call(accionSoap, sobre);
            System.out.println("6");

            // Resultado
           // SoapPrimitive resultado = (SoapPrimitive) sobre.getResponse();
            String cadenaDevuelta =(String) sobre.getResponse();
            Log.i("Resultado", cadenaDevuelta);


        } catch (Exception e) {
            Log.e("MainActivity", "ERROR");
                    e.printStackTrace();

        }

    }