Strange bug with View interaction - iphone

Question

I have to views. One on top of the other.
But i cannot click the subviews of the top view until I set the alpha of the bottom view to 0.0.
Why would that be? Is there some kind of work around?
Code involved
-(void)setUpOpponentsCardStartingPosition
{
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:1.0];
CGRect newF = deckCard.view.frame;
newF.origin.x -= CGRectGetWidth(newF);
deckCard.view.layer.transform = CATransform3DIdentity;
deckCard.view.frame = newF;
deckCard.view.alpha = 0.0;
[UIView commitAnimations];
playersCard.view.layer.transform = CATransform3DScale(CATransform3DIdentity, 0.97,
0.97, 1.0);
opponentsCard.view.layer.transform = CATransform3DRotate(CATransform3DIdentity, -
35*M_PI/180, 0.0, 1.0, 0.0);
opponentsCard.view.layer.transform =
CATransform3DScale(opponentsCard.view.layer.transform, 0.65, 0.675, 1.0);
opponentsCard.view.layer.transform =
CATransform3DTranslate(opponentsCard.view.layer.transform, 400, 0, 0);
opponentsCard.view.hidden = NO;
}
if i comment out the deckCard.view.alpha = 0.0; it wont let me interact with playersCard. This makes no sense to me since playersCard is on top.
Here is setup code for deckCard
-(void)setupDeckInBackground
{
deckCard.view.alpha = 0.0;
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.75];
deckCard.view.frame = playersCard.view.frame;
deckCard.view.alpha = 1.0;
deckCard.view.layer.zPosition = -1;
deckCard.view.layer.transform = CATransform3DMakeRotation(M_PI/180*5, 0, 0, 1);
deckCard.view.layer.transform = CATransform3DScale(deckCard.view.layer.transform,
1.0, 1.0, 1.0);
deckCard.view.layer.transform =
CATransform3DTranslate(deckCard.view.layer.transform, 0, 0, -25);
[UIView commitAnimations];
}
Thanks
-Code

Answer 1

I found that the solution was to use
deckCard.view.userInteractionEnabled = NO;
Thanks,
-Code