Problem dealloc'ing memory used by UIImageViews with fairly large image in an UIScrollView

Question

I have a large UIScrollView into which I\'m placing 3-4 rather large (320x1500 pixels or so) UIImageView image tiles. I\'m adding these UIImageViews to the scroll view insi

Answer 1

It could be the system caching references to your images in memory, assuming you have just drug in the images from the media browser in IB the code underneath is probably using the UIImage imageNamed: method...

You could try loading all the images with imageWithContentsOfFile: , or imageWithData: and see if it behaves the same (dragging in unfilled UIImageViews in IB and setting contents in viewDidLoad:).

Read the UIImage class reference if you'd like a little more detail, it also describes which methods are cached.

If it's the cache it's probably OK though as the system would free it if needed (did you also try hitting the Simulate Memory Warning in the simulator?)