UIScrollView, pagingEnabled, scrolling inertia, and sub sections of the UIView width

Question

In my app I'm using a scrolling canvas composed of equally sized cells. The number of rows is unlimited, but the number of columns is fixed to 13. At anyone time, I have exactly 7 cells fitting the width of the view.

I wrote my own tiling UIScrollView and everything is fine and works fine except for one thing: I want to enable "paging" on the cell boundary, not on the "page" boundary.

In other words I want the horizontal scrolling to move no more than "one cell at a time". This is a usability issue.

In a standard UIScrollView with pagingEnabled=YES, there is some inertia when moving from one page to the next, but then the page is defined as having the full width of the view. I want to define the notion of page as 1/7 of the view width, such that I get the same kind of inertia when moving the display from cells 1-7 to cells 2-8, to cells 3-9, etc...

How would I go about that?

I found this and this, but this a related but different problem.

Answer 1

"Try making your scrollview less than the size of the screen (width-wise), but uncheck the 'Clip Subviews' checkbox in IB."

More info here.