iOS Hit Test for non-transparency in Swift

[macRumorsUserX]

I am trying to do a hit test on a image I have loaded into an UIimageView. the image is one object about 50x50 inside of a 300x300 frame. so essentially, its a 300x300 transparent png file with the an object in the middle.

I only want a touch or tap to be registered when the user touches the object. not the actual transparent parts of the image.

how can this be done in swift?

 

[waterskier2007]

You should use the hitTest method and return the view if the touch was inside your "touch" area

see here

 

[DennisBlah]

I use UIButtons with an image only.

Only the non-transperant area will be triggering the function of the button.