http - How to call web service to achieve login system in Android? -

i have xml project. login sample code

http://10.99.99.99:8087/item/services/itemservice     <soapenv:header/>    <soapenv:body>       <ser:userlogin>          <!--optional:-->          <arg0>admin</arg0>          <!--optional:-->          <arg1>admin</arg1>       </ser:userlogin>    </soapenv:body> </soapenv:envelope> 

if succeed

<soap:body>       <ns2:userloginresponse xmlns:ns2="http://services.ws.item/">          <return>             <result>1</result>             <msg>login succeed</msg>          </return>       </ns2:userloginresponse>    </soap:body> </soap:envelope> 

if not succeed

   <soap:body>       <ns2:userloginresponse xmlns:ns2="http://services.ws.item/">          <return>             <result>-1</result>             <msg>login failed</msg>          </return>       </ns2:userloginresponse>    </soap:body> </soap:envelope> 

the service connect mysql server.

i change test code, still cannot run, , sure wsdl work. logcat shows lot of error.

    public class checkloginactivity extends activity {           private static final string soap_action = "http://services.ws.item/userlogin";         private static final string method_name = "userlogin";         private static final string namespace = "http://services.ws.item/";         private static final string url = "http://10.99.99.99:8087/item/services/itemservice?wsdl";         private textview tv;         private string response;          @override         protected void oncreate(bundle savedinstancestate) {             super.oncreate(savedinstancestate);             setcontentview(r.layout.main);              tv= (textview)findviewbyid(r.id.tv1);              myasynctask myrequest = new myasynctask();             myrequest.execute();          }          private class myasynctask extends asynctask<void, void, void>    {               @override             protected void onpostexecute(void result) {                 super.onpostexecute(result); //              tv.settext(response);             }              @override             protected void onpreexecute() {                 super.onpreexecute();                    }              @override             protected void doinbackground(void... arg0) {                  soapobject request = new soapobject(namespace, method_name);                 request.addproperty("arg0", "admin");                  request.addproperty("arg1", "admin");                   soapserializationenvelope envelope = new soapserializationenvelope(soapenvelope.ver11);                  envelope.setoutputsoapobject(request);                    httptransportse httptransport = new httptransportse(url);                  httptransport.debug = true;                   try {                     httptransport.call(soap_action, envelope);                 } catch (httpresponseexception e) {                     // todo auto-generated catch block                     e.printstacktrace();                 } catch (ioexception e) {                     // todo auto-generated catch block                     e.printstacktrace();                 } catch (xmlpullparserexception e) {                     // todo auto-generated catch block                     e.printstacktrace();                 } //send request                 soapprimitive result;                 try {                     result = (soapprimitive) envelope.getresponse();                     log.d("app",""+result.tostring());                     response = result.tostring();                 } catch (soapfault e) {                     // todo auto-generated catch block                     e.printstacktrace();                 }                  return null;             }            }        }