title: 'int org.ksoap2.serialization.KvmSerializable.getPropertyCount()' on a null object reference
body: <p>i know the condition when i m getting this exception when i am connected to internet but internet is not in service so that time my request goes to on server but i m not able to handle that respond.. after that i am getting this exception.  </p>
  
  <p>//I am getting <code>NullPointerException on response= envelope.getResponse();</code></p>
  
  <pre><code>class Logintask extends AsyncTask&lt;String, String, String&gt; {
  
  
          @Override
          protected void onPreExecute() {
              super.onPreExecute();
              setmainloader(1);
  
          }
  
          @Override
          protected String doInBackground(String... args) {
  
              String NAMESPACE = "URL";
              String URL = "API Call";
              String SOAP_ACTION = "Validate user api";
              String METHOD_NAME = "Some method";
  
              SoapObject Request = new SoapObject(NAMESPACE, METHOD_NAME);
  
  
              Request.addProperty("TokenID", sm.getUserDetails().get(SessionManager.TOKEN_ID));
  
  
  
              Request.addProperty("UserName", enteredusername);
              Request.addProperty("Pwd", enteredpassword);
              Request.addProperty("GCMID", " ");
              Request.addProperty("Imei", imei);
  
              SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
              envelope.dotNet = true;
              envelope.setOutputSoapObject(Request);
              HttpTransportSE httpTransport = new HttpTransportSE(URL, 20000);
  
              try {
                  httpTransport.call(SOAP_ACTION, envelope);
  
              } catch (SocketTimeoutException 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();
              }
  
              try {
  
  
                  //CHECK FOR RESPONSE
  
  
                  Log.d("check for response", "doInBackground: ");
  </code></pre>
  
  <p>//i am getting exception here ???? when i am getting this response when //connected no wifi or mobile data but internet is not coming.  </p>
  
  <pre><code>            response=envelope.getResponse();
  
  
  
              //  Log.d("response",response.toString());
  
          } catch (SoapFault e) {
              // TODO Auto-generated catch block
          }
  
          return null;
      }
  </code></pre>
  
  <p><strong>here is my log below</strong> </p>
  
  <blockquote>
    <p>FATAL EXCEPTION: AsyncTask #6
                                                       Process: com.virtuzoconsultancyservicespvtltd.attendenceapp, PID: 13903
                                                       java.lang.RuntimeException: An error occurred while executing
    doInBackground()
                                                           at android.os.AsyncTask$3.done(AsyncTask.java:309)
                                                           at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354)
                                                           at java.util.concurrent.FutureTask.setException(FutureTask.java:223)
                                                           at java.util.concurrent.FutureTask.run(FutureTask.java:242)
                                                           at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
                                                           at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
                                                           at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
                                                           at java.lang.Thread.run(Thread.java:818)
                                                        Caused by: java.lang.NullPointerException: Attempt to invoke interface method
    'int org.ksoap2.serialization.KvmSerializable.getPropertyCount()' on a
    null object reference
                                                           at org.ksoap2.serialization.SoapSerializationEnvelope.getResponse(SoapSerializationEnvelope.java:521)
                                                           at com.vcpl.attendenceappnew.EmailDialog$mailattendance.doInBackground(EmailDialog.java:224)
                                                           at com.vcpl.attendenceappnew.EmailDialog$mailattendance.doInBackground(EmailDialog.java:175)
                                                           at android.os.AsyncTask$2.call(AsyncTask.java:295)
                                                           at java.util.concurrent.FutureTask.run(FutureTask.java:237)
                                                           at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234) 
                                                           at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113) 
                                                           at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) 
                                                           at java.lang.Thread.run(Thread.java:818)</p>
  </blockquote>