Soap Web Service call in android

private static String SOAP_ACTION = "http://localhost:8080/MyFirstWebService/services/FirstWebService";

    private static String NAMESPACE = "http://localhost:8080/MyFirstWebService/services/";
    private static String METHOD_NAME = "addTwoNumbers";

    private static String URL = "http://localhost:8080/MyFirstWebService/services/FirstWebService?wsdl";


     @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        //Initialize soap request + add parameters
        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);        
         request.addProperty("firstNumber",""+5);
         request.addProperty("secondNumber",""+5);

        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
        envelope.setOutputSoapObject(request);

        // Make the soap call.
        HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
        try {

            //this is the actual part that will call the webservice
            androidHttpTransport.call(SOAP_ACTION, envelope);        
        } catch (Exception e) {
            e.printStackTrace(); 
        }

        // Get the SoapResult from the envelope body.       
        SoapObject result = (SoapObject)envelope.bodyIn;
        Log.d("prabhu","result  is ....."+result);

        if(result != null){
            TextView t = (TextView)this.findViewById(R.id.resultbox);
            Log.d("prabhu","result is ....."+result.getProperty(0).toString());
            t.setText("SOAP response:\n\n" + result.getProperty(0).toString());
        }

    }