Having problems allowing interaction in UIView animation

Question

I have the following block of code to fade out an introView(UIView)

// Hide intro view after 5 seconds
[UIView animateWithDuration: 1.0
          delay: 5.0
         


        

Answer 1

Are you setting your button alpha to 0?
If yes here is an interesting thing about animation.

What you see on the screen during the animation is not what the application sees. The moment you set your alpha to 0, the alpha is 0 for that view, even if you are still seeing it on the screen.
Also, a view that has an alpha lower that 0.05 (don't recall the exact number) won't get touch event.

What you can do is to implement the - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event of that view's superview. or the touchesEnded... as you like.
(Assuming that your not setting it's alpha to 0.)

So you can test for touche that occur where the button is, or just remove that button and let any touch on the screen cancel your animation.

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