How can I detect touch events on a UIImageView inside a deep hierarchy of UIViews?

Posted by jester on Stack Overflow See other posts from Stack Overflow or by jester
Published on 2010-03-30T15:18:07Z Indexed on 2010/03/30 17:33 UTC
Read the original article Hit count: 648

Filed under:

iphone

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objective-c

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touch

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uiimageview

I am developing a simple game on iPhone and I started with a View based application, and through the UIViewController I am loading a custom UIView that contains some more UIViews and some UIImageViews. I want to detect touch events on some of the UIImageViews, but I wasn't able so far.

I've created a second project for testing purposes and figured that UIImageViews handle touch events when the hierarchy is like : UIViewController -> UIView -> UIImageView, but when it's like : UIViewController -> UIView -> UIView -> UIImageView they are not detected.

Notes:
- userInteractionEnabled is YES in all cases
- all UIViews and UIImageViews I mention above are custom subclasses.

Can you think of any reason why, when a custom UIImageView gets deeper in the view hierarchy can't receive touch events?

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