On-screen dimensions of a UIScrollView

Question

I have a view controller containing a status bar and a navigation controller on top and under these a UIScrollView that fill up the remaining space. The ScrollView displays an image. Is it possible to read the on-screen dimensions of the ScrollView without any hard-coded pixel values?

For the UIScrollView both frame and bounds return the size of the entire screen (320,480).

Answer 1

contentSize - (contentSize - contentOffset).

Answer 2

I am using this code to determine scrollView scrolled to the bottom end... modify it as you need.

if (scrollView.contentOffset.y == (scrollView.contentSize.height) - (scrollView.frame.size.height)){
            //Reached at botton
}