Load UIImages correctly? Memory Management with "Leaks"

Question

i´ve created a little game in which images are loaded when the user is touching the screen while moving. It depends on the screen position to load different images immediately. I´ve got an UIImageView and because within the "touchesMoved" function, i´m loading the different images like this:

 imageView.image =  [UIImage imageNamed: [photos objectAtIndex: newImage ] ] ;

Now i want to improve my memory management using Instruments with "Allocations" & "Memory Monitor". Here´s i´m setting different snapshots with "Mark Heap" points and look for leaks. The line above is highlighted and now i want to know what´s wrong with it.. How can i improve that image-loading (without caching)?

Answer 1

Read this Dispelling the UIImage imageNamed: FUD

and also read the links in the question as well. Should answer everything you need.

Answer 2

First of all: imageNamed: does cache images. If you're getting this line highlighted then there are 2 possible reasons (or both):

1. you're not properly releasing imageView
2. you're not properly releasing the photos array

Answer 3

+imageNamed returns an autoreleased object, yet the @property image in UIImageView retains it through its use until overwritten. -objectAtIndex: must return an object with a retain count of 1 which is not released.

If that indeed is the problem then the fix is

imageView.image =  [UIImage imageNamed: [[photos objectAtIndex: newImage ] autorelease]];

However I doubt that is the real issue here.