SoapObject request = new SoapObject(namespace, Metodo);
 SoapSerializationEnvelope sobre = new SoapSerializationEnvelope(SoapEnvelope.VER12);
 sobre.dotNet = true;
 sobre.setOutputSoapObject(request);

 HttpTransportSE transporte = new HttpTransportSE(url);
 transporte.call(accionSoap_GetLineas, sobre);
 SoapObject resultado = (SoapObject) sobre.getResponse();