Create a Scroller using the CreateScroller method of the app object:
The options for the Scroller are the same as the LinearLayout fill options, which set how a Scroller sizes within it's parent:- "FillX", "FillY" and "FillXY". By default Scrollers will auto-size to wrap their contents.
Create a full screen Scroller with width and height set to 1.0
See 'CreateScroller for more informations and a complete function list