Memory Efficient Image Loading

ImageLoader.m

#pragma mark -
#pragma mark Memory Efficient Image Loading

+ (UIImage*)imageWithContentsOfFilename:(NSString*)filename
{    
    NSMutableString* path = [NSMutableString stringWithString:[[NSBundle mainBundle] bundlePath]];
    [path appendString:@"/"];
    [path appendString:filename];
    return [UIImage imageWithContentsOfFile:path];
}

Instead of [UIImage imageNamed:@"your.png"] which caches the image data,
this method releases the memory of the image immediately after the UIImage object is deallocated.