java - DialogPreference setSummary() -

i have custom preference displaying timepicker dialog when clicked. want set summary preference when value choosed displaying chosen time. how done? don't understand how use setsummary(charsequence) method.

the custom preference:

public class timepreference extends dialogpreference {      final calendar c = calendar.getinstance();     int hour = c.get(calendar.hour_of_day);     int minute = c.get(calendar.minute);        private timepicker timepicker;        public timepreference(context context, attributeset attributes) {         super(context, attributes);         setpersistent(false);       }        @override       public void onbinddialogview(view view) {         super.onbinddialogview(view);          timepicker = (timepicker) view.findviewbyid(r.id.preftimepicker);         timepicker.setcurrenthour(getsharedpreferences().getint(getkey() + ".hour", hour));         timepicker.setcurrentminute(getsharedpreferences().getint(getkey() + ".minute", minute));         timepicker.setis24hourview(dateformat.is24hourformat(timepicker.getcontext()));       }        @override       protected void ondialogclosed(boolean oktosave) {         super.ondialogclosed(oktosave);         if (oktosave) {           timepicker.clearfocus();           sharedpreferences.editor editor = geteditor();           editor.putint(getkey() + ".hour", timepicker.getcurrenthour());           editor.putint(getkey() + ".minute", timepicker.getcurrentminute());           editor.commit();           // here should setsummary() method, maybe?         }       }  } 

the main activity:

public class mainactivity extends activity  {      @override   protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);      getfragmentmanager().begintransaction().replace(android.r.id.content,             new prefsfragment()).commit();   } } 

use following lines in dialogpreference constructor

settitle("your preference name goes here"); setsummary("your summary goes here")