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POAndroid Ksoap2 Null Pointer Exception
 

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    <p>Here is how i Build My Kosap request XML :</p> <pre><code>public static SoapSerializationEnvelope constructEnvelope (String METHOD_NAME, List&lt;NameValuePair&gt; properties) { SoapObject request = new SoapObject(Constants.NAMESPACE, METHOD_NAME); if (null != properties &amp;&amp; !properties.isEmpty() &amp;&amp; properties.size() &gt; 0) { for (NameValuePair prop : properties) { request.addProperty(prop.getName(), prop.getValue()); } } SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); envelope.dotNet = true; envelope.setOutputSoapObject(request); if (null != properties &amp;&amp; !properties.isEmpty() &amp;&amp; properties.size() &gt; 0) { envelope.addMapping(Constants.NAMESPACE, METHOD_NAME, request.getClass()); } return envelope; } </code></pre> <p><strong>Stack Trace :</strong></p> <pre><code>04-08 16:46:42.292: WARN/System.err(19812): java.lang.NullPointerException 04-08 16:46:42.292: WARN/System.err(19812): at org.ksoap2.transport.ServiceConnectionSE.getResponseProperties(ServiceConnectionSE.java:85) 04-08 16:46:42.292: WARN/System.err(19812): at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:189) 04-08 16:46:42.292: WARN/System.err(19812): at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:114) 04-08 16:46:42.292: WARN/System.err(19812): at com.cantorfuturesexchange.CantorBinaryOptions.ui.LogInActivity$PracticeRegistration.doInBackground(LogInActivity.java:665) 04-08 16:46:42.292: WARN/System.err(19812): at com.cantorfuturesexchange.CantorBinaryOptions.ui.LogInActivity$PracticeRegistration.doInBackground(LogInActivity.java:623) 04-08 16:46:42.292: WARN/System.err(19812): at android.os.AsyncTask$2.call(AsyncTask.java:287) 04-08 16:46:42.292: WARN/System.err(19812): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305) 04-08 16:46:42.302: WARN/System.err(19812): at java.util.concurrent.FutureTask.run(FutureTask.java:137) 04-08 16:46:42.302: WARN/System.err(19812): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076) 04-08 16:46:42.302: WARN/System.err(19812): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569) 04-08 16:46:42.302: WARN/System.err(19812): at java.lang.Thread.run(Thread.java:856) 04-08 16:46:42.342: ERROR/MP-Decision(1576): UP Ld:55 Nw:1.990000 Tw:140 rq:2.800000 seq:147.000000 04-08 16:46:42.793: ERROR/MP-Decision(1576): DOWN Ld:18 Ns:1.100000 Ts:190 rq:0.000000 seq:197.000000 04-08 16:46:43.574: WARN/PowerManagerService(718): Timer 0x7-&gt;0x3|0x0 </code></pre> <p><strong>Research effort :</strong> </p> <p>By changing my envelope creation as explained in the following link : <a href="https://stackoverflow.com/questions/14723386/httptransportse-call-method-returns-nullpointerexception-frequently">HttpTransportSE.call method returns NullPointerException frequently</a></p> <pre><code>public static SoapSerializationEnvelope constructEnvelope (String METHOD_NAME, List&lt;NameValuePair&gt; properties) { SoapObject request = new SoapObject(Constants.NAMESPACE, METHOD_NAME); if (null != properties &amp;&amp; !properties.isEmpty() &amp;&amp; properties.size() &gt; 0) { for (NameValuePair prop : properties) { PropertyInfo property = new PropertyInfo(); { property.name = prop.getName(); property.setNamespace(Constants.NAMESPACE); property.setValue(prop.getValue()); } request.addProperty(property); } } SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); envelope.dotNet = true; envelope.setOutputSoapObject(request); if (null != properties &amp;&amp; !properties.isEmpty() &amp;&amp; properties.size() &gt; 0) { envelope.addMapping(Constants.NAMESPACE, METHOD_NAME, request.getClass()); } return envelope; } </code></pre> <p>I have even found few other links which i have tried everything like using Ksoap version 3.0.0 rather than version 3.0.0-rc4 nothing works. I even found a link which states something about checking the basics but i am not able to understand how to fix the issue. below is the link for that.</p> <p><a href="https://stackoverflow.com/questions/12723517/android-ksoap2-serviceconnectionse-nullpointerexception">Android KSOAP2 ServiceConnectionSE NullPointerException</a></p>
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    1. COI'm using ksoap 2.6.5 version and i've no one problem with it. Try to use this version
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    2. COHave the same issue, 2.6.5 doesn't work too. I wonder, that it may depend on the phone - my xperia l has NPE while htc vision works fine.
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      1. USVladimir Ivanov
 

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