How to detect touch on NSTextAttachment

Question

What is the best way to detect when user taps on NSTextAttachment on iOS?

I think that one of the ways would be checking for the character on carret\'s

Answer 1

SWIFT 4.2

@objc func myMethodToHandleTap(_ sender: UITapGestureRecognizer) {

let myTextView = sender.view as! UITextView

     let layoutManager = myTextView.layoutManager

     // location of tap in myTextView coordinates and taking the inset into account
     var location = sender.location(in: myTextView)
     location.x -= myTextView.textContainerInset.left;
     location.y -= myTextView.textContainerInset.top;

     // character index at tap location
     let characterIndex = layoutManager.characterIndex(for: location, in: myTextView.textContainer, fractionOfDistanceBetweenInsertionPoints: nil)

     if characterIndex < myTextView.textStorage.length {

        let attributeValue = myTextView.attributedText.attribute(NSAttributedString.Key.attachment, at: characterIndex, effectiveRange: nil) as? NSTextAttachment

        if let _ = attributeValue {
           print("TAPPED ATTACHMENT")  
        }
     }

}