android - CalledFromWrongThreadException - Only the original thread that created a view hierarchy can touch its views -

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• android “only original thread created view hierarchy can touch views.” 14 answers

i want connect mysql database via webservice.

    login = (button) findviewbyid(r.id.btngiris);     login.setonclicklistener(new view.onclicklistener() {          public void onclick(view arg0) {             thread th = new thread(new runnable() {                 @override                 public void run() {                      runonuithread(new runnable() {                         @override                         public void run() {                             new authentication()                                     .executeonexecutor(asynctask.thread_pool_executor);                          }                     });                 }             });             th.start(); 

authentication class webservice

    class authentication extends asynctask<void, void, void> {      final string namespace = "http://aractakipyazilimlari.com";     final string url = "http://10.0.2.2:8080/isbakapp/services/login?wsdl";     final string soap_action = "http://aractakipyazilimlari.com/authentication";     final string method_name = "authentication";      @override     protected void doinbackground(void... params) {          soapobject request = new soapobject(namespace, method_name);         string user_name = username.gettext().tostring();         string user_password = userpassword.gettext().tostring();           propertyinfo unameprop = new propertyinfo();         unameprop.setname("plaka");         unameprop.setvalue(user_name);         unameprop.settype(string.class);         request.addproperty(unameprop);          propertyinfo passwordprop = new propertyinfo();         passwordprop.setname("sifre");         passwordprop.setvalue(user_password);         passwordprop.settype(string.class);         request.addproperty(passwordprop);          soapserializationenvelope envelope = new soapserializationenvelope(soapenvelope.ver11);         envelope.setoutputsoapobject(request);         httptransportse androidhttptransport = new httptransportse(url);          try {             androidhttptransport.call(soap_action, envelope);             soapobject response = (soapobject) envelope.getresponse();             result.settext(response.tostring());          } catch (exception e) {              log.e("login", e.tostring());         }          return null;     }  } 

logcat error message

android.view.viewrootimpl$calledfromwrongthreadexception: original thread created view hierarchy can touch views

1/ can't modify view in background thread, need on ui thread possible overriding onpostexecute(). method takes parameter, value returned doinbackground(), in case be: response.

also, need modify signature of asynctask:

class authentication extends asynctask<void, void, string> { } 

since third type refers type of value returned doinbackground().

2/ piyush mentioned, don't need start new thread, asynctask about.