Multiple PDF pages and scrollview in two dimensions in xcode

Super noob here:

I am trying to create a scrollview that will scroll through a number of pdf's in a two dimensional array for use on an iPad. As if I 开发者_运维百科tiled all the pdf's and wanted to be able to scroll from page to page by scrolling up/down/left/right. How can I do that?

Any help is appreciated!

I have to read the PDF pages and write them as image contexts. The big problem here is that it you will use a mechanism to generate the pages lazily keeping a little buffer of advance.

The only thing I don't get is why you need a 2D array to store a PDF if this can be done with a 1D array?