How to make a zone where user can tap to do a specify action)?

How to make a zone where user can tap to do a specify action)? same below pi开发者_运维百科cture:

Please help me!

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Put a transparent UIButton in that zone.

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The easiest way I think is to put there an instance of UIButton with UIButtonTypeCustom type (that is with no image and transparent background) and set showsTouchWhenHighlighted to NO.