Question

I am apparently in some swirling UIView hell zone at the moment where up is down sibling is parent and my brain is completely fried.

Here’s the deal. Really, really simple. I have a container view with N leaf node sibling subviews. No tricks here, dead simple. I do the following:

// occludedPageSet is the set of view tags corresponding to views that are off screen and // thus fully occluded. This was determined geometrically.

for (NSNumber *n in occludedPageSet) {

            // Point to a view corresponding to this tage
    UIView *v = [self.containerView viewWithTag:[n integerValue]];

            // Hide this view
    if (v.hidden == NO) {

                    NSLog(@"View %d is occluded. Hide it.", [n integerValue]);
        v.hidden = YES;

    } // if (v.hidden == NO)


} // for (occludedPageSet)

Pretty tame stuff. Unfortunately ALL sibling views vanish! What the?!? How is this possible?

Do I need a [retain]/[release] for v here. I’m stumped.

Baffled,
Doug

Answer 1

Apparently, all of your views are included in occludedPageSet, or all of your tags are the same n.

NSNumber *n in occludedPageSet

Or, one of the v views is the parent of the rest, so when you hide it, you hide them all.