android ติดต่อกับ Webservice ข้อความไม่แสดง Webservice เป็น IIS ที่ติดตั้งไว้ที่เครื่องครับ อยากทราบว่าทำไมข้อความ ไม่แสดงครับ

	private final String NAMESPACE = "http://tempuri.org/";
	private final String URL = "http://localhost/WSAndroid/";
	private final String SOAP_ACTION = "http://tempuri.org/HelloWorld";
	private final String METHOD_NAME = "HelloWorld";
	 
	TextView result;


	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		result = (TextView) findViewById(R.id.textView1);
        try 
        {
            SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);            
            SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
            envelope.dotNet = true;
            envelope.setOutputSoapObject(request);

            HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
            androidHttpTransport.call(SOAP_ACTION, envelope);
            SoapPrimitive response = (SoapPrimitive)envelope.getResponse();
            String resultValue = response.toString();

            result.setText(resultValue);          
        }
        catch (Exception e) 
        {
            result.setText(e.getMessage());
        }

        [WebMethod]
        public string HelloWorld()
        {
            return "Hello World";
        }