Question

i use the flooding code for preloading my images:

NSMutableArray *test_loose_preload = [[NSMutableArray alloc] initWithCapacity:test_loose_array.count];

for (int aniCount = 0; aniCount < test_loose_array.count; aniCount++) {

    UIImage *frameImage = [test_loose_array objectAtIndex:aniCount];
    UIGraphicsBeginImageContext(frameImage.size);
    CGRect rect = CGRectMake(0, 0, frameImage.size.width, frameImage.size.height);
    [frameImage drawInRect:rect];
    UIImage *renderedImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    [test_loose_preload addObject:renderedImage];

}

test_loose = test_loose_preload;

Is there any possibility to check within this block if an image is already preloaded and no need to preload this one then any more?

Thanks for ideas!

Answer 1

Perhaps I’m misunderstanding the question, but it looks to me like an image is “pre-loaded” if you have built it and stuffed it into your test_loose_preload array. I gather that you’re concerned that some other thread may do the same work before you get through the array.

If so, then you can check for this by just checking [test_loose_preload objectAtIndex:aniCount], and if that result is non-nil, then skip that one and go on to the next index.