Hit Test for non-transparency in Swift

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i trying hit test on image have loaded uiimageview. image 1 object 50x50 inside of 300x300 frame. essentially, 300x300 transparent png file object in middle.

want touch or tap registered when user touches object. not actual transparent parts of image.

how can done in swift?
 

you should use hittest method , return view if touch inside "touch" area

see here
 


Forums iPhone, iPad, and iPod Touch iOS Programming


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