Answer by User18474728 for How to know when text is pasted into a UITextView?

It is for Swift5.1

func textView(_ textView: UITextView, shouldChangeTextIn range: NSRange, replacementText text: String) -> Bool {    if let paste = UIPasteboard.general.string, text == paste {       print("paste")    } else {       print("normal typing")    }    return true}