android - Cannot get a hold on my Preferences with Unified Preferences -

i use this library create preferenceactivity. works quite fine far can not set listeners on preference.

that how activity looks like:

public class prefactivity extends unifiedsherlockpreferenceactivity {     @override     public void oncreate(bundle savedinstancestate) {         setheaderres(r.xml.preference_headers);         // set desired preference file , mode (optional)         setsharedpreferencesmode(context.mode_private);          super.oncreate(savedinstancestate);          getsupportactionbar().sethomebuttonenabled(true);         getsupportactionbar().setdisplayhomeasupenabled(true);          preference p = (preference)findpreference("deletesavedsearches");         p.setonpreferenceclicklistener(new preference.onpreferenceclicklistener() {                         @override                         public boolean onpreferenceclick(preference arg0) {                              //code want                                return true;                         }                     });     } } 

this preferencescreen:

<preferencescreen xmlns:android="http://schemas.android.com/apk/res/android" >      <preference         android:key="deletesavedsearches"         android:summary="gespeicherte suchen löschen"         android:title="gespeicherte suchen löschen" />  </preferencescreen> 

and headers:

<preference-headers xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:unified="http://schemas.android.com/apk/res-auto" >      <!--     /*     ** header definitions identical android:* except preferenceres should reference preference xml file     ** unlike native headers these used building single pane version.     */     -->     <header         unified:fragment="com.example.skelett.prefactivity$generalpreferencefragment"         unified:preferenceres="@xml/pref_country"         unified:title="land" />     <header         unified:fragment="com.example.skelett.prefactivity$generalpreferencefragment"         unified:preferenceres="@xml/pref_data"         unified:title="daten" />  </preference-headers> 

in case, p null. getpreferencescreen() returns null. have keys set in preference xml. missing?

just move findpreference method in onpostcreate , should work:

@override protected void onpostcreate(bundle savedinstancestate) {     super.onpostcreate(savedinstancestate);     preference p = (preference) findpreference("deletesavedsearches");     p.setonpreferenceclicklistener(new preference.onpreferenceclicklistener() {         @override         public boolean onpreferenceclick(preference arg0) {             // code want             return true;         }     }); }