iPhone scrollView add elements dynamically with id

Answer 1

This should work I think:

 [element setFrame:...];

However if you work with different UI elements in your method may be you can make your elements parameter UIView* instead of id? This way your code will work for all UIView subclasses (which is what you actually need I suppose)

Answer 2

The difference is that "id" doesn't have any kind of reference to a frame. It could be anything. You want to instead do (UIView *)element in the method declaration, or alternatively in the call to element.frame, you would do ((UIView *)element).frame.

(And yeah, all things that you put on the screen are inheriting from UIView -- UIButton, UIImageView, etc.)