Recreate UIPickerView with just one row showing

[Xintare]

Hi there,

I need a "PickerView", that behaves like a normal UIPickerView, but only shows one row of data and has a custom design.

Something like this, showing the transition from subview 1 to subview 2. After the user lifts his finger and after the scrolling stops, only one subview will be shown:



So basically a scrollview which:

• is endless in both, positive and negative directions by showing the same entries over and over
  
• uses paging across several subviews
  
• only shows one subview when not scrolling, and no more than two subviews when scrolling.

I can get a endless scrollview to work, but not with paging enabled. Paging will always limit my scrolling to the next subview.

So I'm thinking about creating my own UIView subclass which custom scrolling behaviour to mimic a UIPickerView. But before doing so, I wanted to get some opinions about the idea in general. Is creating a custom UIView the right way to go? Anyone has some experience with the expected performace? (There will be timers to handle the scrolling algorithm, which has to be recreated of course... )

Another approach would be to subclass UIScrolView and implement the paging myself. I know when the scrollView starts decelerating
, so maybe there is a way to overwrite the contentOffset to have it scroll into the right position...?!

Any help is appreciated! Thanks!