Display scrollview button click event

I have images under scrollview. I have a button to click event. When i click the button i need to display scrollview. But when i install app the scrollview is automatically displaying bottom of the page.

code:

Button click:

By default set visiblity of android:id=”@+id/scrl” as invisible in xml.
After click on button
HorizontalScorllView srl=(HorizontalScrollView)findViewById(R.id.scrl);
set visiblity of srl as visble.