android - how to display scrollView already scrolled 20% on startup of activity -

i have made android activity in have put scrollview,now want when open activity,it should alreay scrolled 20% ,but should scrolled down after that,i have tried many links , refrences that,but failed that,can please me how can it,my xml code below scrollview,i have put image,i want scrollview show scrolled fixed height on startup of activity.

main.xml

 <scrollview         android:id="@+id/scr_profile"         android:layout_width="fill_parent"         android:layout_height="fill_parent"         android:fillviewport="true"         android:scrolly="200dp"         android:scrollbars="none" >          <relativelayout             android:layout_width="fill_parent"             android:layout_height="fill_parent" > ......  </scrollview> 

have try runnable?

        final scrollview scroll = (scrollview) this.findviewbyid(r.id.scr_profile);      scroll.post(new runnable() {         @override         public void run() {             scroll.scrollto(200, 200);         }      }); 

this work me.