android - Always show scrollbars for PreferenceScreen -

i have defined preferences in app using preferences.xml , preferenceactivity. settings presented in phone in scrollview-like-way. show vertical scrollbars time. in android 1.6 not fade away, in android 2.2 fade away after second. in scrollview can control using android:scrollbaralwaysdrawverticaltrack or android:scrollbardefaultdelaybeforefade. how can preference widget?

/p

this worked android 2.3.3 .

public class mypreferenceactivity extends preferenceactivity {      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         getlistview().setscrollbarfadingenabled(false);         ...     }     ... }