UIGraphicsGetImageFromCurrentImageContext memory leak with previews

Question

I\'m trying to create previews images of pages in a PDF but I have some problems with the release of memory.

I wrote a simple test algorithm that cycles on the probl

Answer 1

The problem is this:

UIGraphicsGetImageFromCurrentImageContext()

returns an autoreleased UIImage. The autorelease pool holds on to this image until your code returns control to the runloop, which you do not do for a long time. To solve this problem, you would have to create and drain a fresh autorelease pool on every iteration (or every few iterations) of your while loop.