java - Action Bar Home Button not functional with nested PreferenceScreen -

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i found workaround enable actionbar home button on nested preferencescreen... doesn't call onoptionsitemselected in preferenceactivity. know way use home button on nested preferencescreen?

modification of post 35 here:

http://code.google.com/p/android/issues/detail?id=4611

@override     public boolean onpreferencetreeclick(preferencescreen preferencescreen, preference preference)     {         super.onpreferencetreeclick(preferencescreen, preference);         if (preference!=null)             if (preference instanceof preferencescreen)                 if (((preferencescreen)preference).getdialog()!=null)                     ((preferencescreen)preference).getdialog().getactionbar().sethomebuttonenabled(true);         return false;     }

i had problem , how solved it. firstly access preferencescreen use exact same method mentioned above.

@override public boolean onpreferencetreeclick(preferencescreen preferencescreen, preference preference) {     super.onpreferencetreeclick(preferencescreen, preference);      // if user has clicked on preference screen, set action bar     if (preference instanceof preferencescreen) {         initializeactionbar((preferencescreen) preference);     }      return false; }

from here looked preferencescreen is, , saddened find out wrapper of dialog. moving forward, set actionbar display options , attempt find home button area. unfortunately wasn't easy get, of hierarchy viewer managed gain access finding home icon , parent views. once have access containing linearlayout, can attach onclicklistener dismiss preferencescreen's dialog, calls preferencescreen's ondismisslistener , returns previous screen.

/** sets action bar {@link preferencescreen} */ public static void initializeactionbar(preferencescreen preferencescreen) {     final dialog dialog = preferencescreen.getdialog();      if (dialog != null) {         // inialize action bar         dialog.getactionbar().setdisplayhomeasupenabled(true);          // apply custom home button area click listener close preferencescreen because preferencescreens dialogs swallow         // events instead of passing activity         // related issue: https://code.google.com/p/android/issues/detail?id=4611         view homebtn = dialog.findviewbyid(android.r.id.home);          if (homebtn != null) {             onclicklistener dismissdialogclicklistener = new onclicklistener() {                 @override                 public void onclick(view v) {                     dialog.dismiss();                 }             };              // prepare yourselves hacky programming             viewparent homebtncontainer = homebtn.getparent();              // home button imageview inside framelayout             if (homebtncontainer instanceof framelayout) {                 viewgroup containerparent = (viewgroup) homebtncontainer.getparent();                  if (containerparent instanceof linearlayout) {                     // view contains title text, set whole view clickable                     ((linearlayout) containerparent).setonclicklistener(dismissdialogclicklistener);                 } else {                     // set on home button                     ((framelayout) homebtncontainer).setonclicklistener(dismissdialogclicklistener);                 }             } else {                 // 'if else fails' default case                 homebtn.setonclicklistener(dismissdialogclicklistener);             }         }         } }

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