Needhelp with restful web service

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Mobile

Android

Hi guys i am new at android development but i could not get my web service working help is much appreciated. I have no idea what should i do from now on i have been goggling fro days. Thanks
The problem what am i suppose to do next and i am not sure am i connected to the web service.

public class FirstScreen extends Activity {
    /** Called when the activity is first created. */
	private static final String SOAP_ACTION= "StockQuoteService";
	private static final String URL = "http://www.restfulwebservices.net/wcf/StockQuoteService.svc?wsdl";	
	private static final String NAMESPACE = "http://www.restfulwebservices.net/ServiceContracts/2008/01";
	private static final String METHOD_NAME = "GetStockQuote";
	TextView tv;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        tv = (TextView)findViewById(R.id.textView1);
    	
    	SoapObject Request = new SoapObject(NAMESPACE,METHOD_NAME);
    	Request.addProperty("", "");
    	
    	SoapSerializationEnvelope soapEnvelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
    	soapEnvelope.dotNet = true;
    	soapEnvelope.setOutputSoapObject(Request);
    	
    	AndroidHttpTransport aht = new AndroidHttpTransport(URL);
    	try
    	{
    		aht.call(SOAP_ACTION, soapEnvelope);
    		SoapPrimitive resultString = (SoapPrimitive)soapEnvelope.getResponse();
    		tv.setText("Status :" + resultString );
    	}
    	catch(Exception e)
    	{
    		e.printStackTrace();
    	}
    	}
    }