I have implemented my SOAP webservice following the tutorial found on
developers website, and now i'm writing a android app that call an
available service and show result (for now in a textview) using ksoap2
libraries.
That's the code:
public class DownloadDataTask extends AsyncTask<Void, Void, SoapObject> {
private static String METHOD_NAME = "getData";
private static String SOAP_ACTION = "http://example.com/getData";;
private static String WSDL_URL =
"http://arduino-data-server.appspot.com/FunctionsService.wsdl";;
private static String NAMESPACE = "http://example.com/";;
private MainActivity caller_activity;
public DownloadDataTask(MainActivity a) {
caller_activity = a;
}
@Override
protected SoapObject doInBackground(Void... arg0) {
SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
SoapEnvelope.VER12);
envelope.setOutputSoapObject(request);
HttpTransportSE androidHttpTransport = new HttpTransportSE(WSDL_URL);
try {
androidHttpTransport.call(SOAP_ACTION, envelope);
SoapObject result = (SoapObject) envelope.getResponse();
return result;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (XmlPullParserException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(SoapObject result) {
TextView tw = (TextView) caller_activity.findViewById(R.id.text_view);
if (result == null) {
tw.setText("NULL");
} else {
tw.setText(result.getName());
}
}
}
but everytime, the result SoapObject it's null. what's wrong? on appengine
server log, i can see that android app ask for wsdl file, but no request
for service was sent.
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