title: Call SOAP service from android with ksoap error
body: <p>I have a webservice running on Google app engine, and i would to call a available service from an android device. I've follow and merge code of most tutorial about KSoap2, but i still obtain an exception on android. this is the code:</p>
  
  <pre><code>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/";
  
  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();
  if (result != null) {
      TextView t = (TextView) this.findViewById(R.id.text_view);
  
      t.setText("SOAP response:\n\n"+ result.getProperty(0).toString());
  }
  } catch (IOException e) {
  // TODO Auto-generated catch block
  e.printStackTrace();
  } catch (XmlPullParserException e) {
  // TODO Auto-generated catch block
  e.printStackTrace();
  }
  </code></pre>
  
  <p>and that's the error log:</p>
  
  <pre><code>09-03 18:09:04.805: W/dalvikvm(28352): threadid=1: thread exiting with uncaught exception (group=0x41909700)
  09-03 18:09:04.821: E/AndroidRuntime(28352): FATAL EXCEPTION: main
  09-03 18:09:04.821: E/AndroidRuntime(28352): java.lang.RuntimeException: Unable to start     activity ComponentInfo{com.example.provasoap/com.example.provasoap.MainActivity}: android.os.NetworkOnMainThreadException
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2211)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at android.app.ActivityThread.access$600(ActivityThread.java:141)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at android.os.Handler.dispatchMessage(Handler.java:99)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at android.os.Looper.loop(Looper.java:137)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at android.app.ActivityThread.main(ActivityThread.java:5103)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at java.lang.reflect.Method.invokeNative(Native Method)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at java.lang.reflect.Method.invoke(Method.java:525)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at dalvik.system.NativeStart.main(Native Method)
  09-03 18:09:04.821: E/AndroidRuntime(28352): Caused by: android.os.NetworkOnMainThreadException
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1133)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at java.net.InetAddress.lookupHostByName(InetAddress.java:385)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at java.net.InetAddress.getAllByName(InetAddress.java:214)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at libcore.net.http.HttpConnection.&lt;init&gt;(HttpConnection.java:70)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at libcore.net.http.HttpConnection.&lt;init&gt;(HttpConnection.java:50)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at libcore.net.http.HttpConnection$Address.connect(HttpConnection.java:340)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:87)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at libcore.net.http.HttpConnection.connect(HttpConnection.java:128)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:316)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at libcore.net.http.HttpEngine.connect(HttpEngine.java:311)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:290)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:240)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at libcore.net.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:81)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at libcore.net.http.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:197)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at org.ksoap2.transport.ServiceConnectionSE.openOutputStream(ServiceConnectionSE.java:126)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:179)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:116)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:111)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at com.example.provasoap.MainActivity.onCreate(MainActivity.java:47)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at android.app.Activity.performCreate(Activity.java:5133)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
  09-03 18:09:04.821: E/AndroidRuntime(28352):    ... 11 more
  </code></pre>