KSoap2 SoapObject Object Reference not set to an instance

Question

I think this is a simple problem that others may be able to provide the missing link to. I have a Workflow wcf service that my .NET clients can communicate with pro

Answer 1

I know its too late to answer this but I faced the same problem and the problem in my code was that I typed the property.setname() incorrect .. make sure you wrote the correct name of the method parameter (copy past it from the wsdl) I'm using ksoap2 3.1.1 btw!

Answer 2

Change the following:

SoapObject response = (SoapObject)envelope.getResponse();
  X = response.getProperty(0).toString();

to be:

SoapObject response = (SoapObject)envelope.bodyIn;
                if(response != null)
                {
                      X=response.getProperty(0).toString();
                }

Answer 3

I am using below function in my class to work with SOAP Web-Service.

public static String DeleteGame(String GameIDValue, String PlayerIdValue) {

        String responce = null; 

        SoapObject request = new SoapObject(SOAP_NAMESPACE, SOAP_METHOD_DeleteGame);

        PropertyInfo GameId = new PropertyInfo();
        PropertyInfo PlayerId = new PropertyInfo();

        GameId.setName("gameid");
        GameId.setValue(GameIDValue);

        PlayerId.setName("PlayerID");
        PlayerId.setValue(PlayerIdValue);

        request.addProperty(GameId);
        request.addProperty(PlayerId);

        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
        envelope.dotNet = true;
        envelope.setOutputSoapObject(request);
        HttpTransportSE aht = new HttpTransportSE(SOAP_URL);
        try {
            aht.call(SOAP_ACTION_DeleteGame, envelope);
            SoapPrimitive LoginResult;
            LoginResult = (SoapPrimitive)envelope.getResponse();
            System.out.println("=================Delete Game Results: "+LoginResult.toString());
            //System.out.println(LoginResult.toString());
            responce = LoginResult.toString();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (XmlPullParserException e) {
            e.printStackTrace();
        }

        return responce;
    }

Answer 4

This was the class that i am using for calling web service hope this might help you

public class CallSOAP {

private String SOAP_ACTION="your action url";
private String OPERATION_NAME="";//The web method OR web service you are going to call
private final String WSDL_TARGET_NAMESPACE=SOAP_ACTION;
private  final String SOAP_ADDRESS=Configuration.WEB_SERVICE_URL;//ip-address of serever where you host your service 
private Exception exception;
private String ErrorMsg="";
private String TERST_URL="" ;
public Object call(String MethodeName,ArrayList<PropertyInfo> Parameters){
  this.OPERATION_NAME=MethodeName;
  SoapObject request = new SoapObject(WSDL_TARGET_NAMESPACE, OPERATION_NAME);
 if(Parameters != null && Parameters.size()>0){
   for(PropertyInfo propertyInfo : Parameters){
      request.addProperty(propertyInfo);
 }
}

SoapSerializationEnvelope  envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
envelope.dotNet= true;
envelope.setOutputSoapObject(request);
HttpTransportSE httpTransport =null;
if(!this.TERST_URL.equals(""))
  httpTransport = new HttpTransportSE(this.TERST_URL);
else
  httpTransport = new HttpTransportSE(SOAP_ADDRESS);
 Object Response =null;
 try{
    httpTransport.call(SOAP_ACTION+OPERATION_NAME, envelope);
    Response=envelope.getResponse();
  }
 catch (SocketTimeoutException ex) {
     this.ErrorMsg="Unable to connect";
      Response=null;
     this.exception=ex;
  }
  catch (IOException ie) {
   this.ErrorMsg="Unable to connect";
  Response=null;
   this.exception=ie;
  }
   catch (Exception e) {
    this.ErrorMsg="Unable to connect";
    Response=null;
    this.exception=e;
 }
      return Response;
   }
}