How would I get to know that the PDFView is touched?

How would I get to know that the PDFView is touched?



When I am trying to use UIGestureRecognizer it is cancelling all other gesture recognizers which I don't intend to.

I want to perform an update when the PDFView is panned or scaled

Thanks in Advance!
How would I get to know that the PDFView is touched?
 
 
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