Tap on a part of text of UILabel

#swift 4.2
Please find the solution here for getting specific text action of Label.

1. Label declaration

   @IBOutlet weak var lblTerms: UILabel!
   

2. Set attributed text to the label

   let text = "Please agree for Terms & Conditions."
   lblTerms.text = text
   self.lblTerms.textColor =  UIColor.white
   let underlineAttriString = NSMutableAttributedString(string: text)
   let range1 = (text as NSString).range(of: "Terms & Conditions.")
        underlineAttriString.addAttribute(NSAttributedString.Key.underlineStyle, value: NSUnderlineStyle.single.rawValue, range: range1)
        underlineAttriString.addAttribute(NSAttributedString.Key.font, value: UIFont.init(name: Theme.Font.Regular, size: Theme.Font.size.lblSize)!, range: range1)
        underlineAttriString.addAttribute(NSAttributedString.Key.foregroundColor, value: Theme.color.primaryGreen, range: range1)
   lblTerms.attributedText = underlineAttriString
   lblTerms.isUserInteractionEnabled = true
   lblTerms.addGestureRecognizer(UITapGestureRecognizer(target:self, action: #selector(tapLabel(gesture:))))
   

It looks like the above image.

3. Add the tapLabel action method to the controller

   @IBAction func tapLabel(gesture: UITapGestureRecognizer) {
   let termsRange = (text as NSString).range(of: "Terms & Conditions")
   // comment for now
   //let privacyRange = (text as NSString).range(of: "Privacy Policy")
   
   if gesture.didTapAttributedTextInLabel(label: lblTerms, inRange: termsRange) {
       print("Tapped terms")
   } else if gesture.didTapAttributedTextInLabel(label: lblTerms, inRange: privacyRange) {
       print("Tapped privacy") 
   } else {                
       print("Tapped none")
   }
   }
   

4. Add UITapGestureRecognizer extension

   extension UITapGestureRecognizer {
   
       func didTapAttributedTextInLabel(label: UILabel, inRange targetRange: NSRange) -> Bool {
           // Create instances of NSLayoutManager, NSTextContainer and NSTextStorage
           let layoutManager = NSLayoutManager()
           let textContainer = NSTextContainer(size: CGSize.zero)
           let textStorage = NSTextStorage(attributedString: label.attributedText!)
   
           // Configure layoutManager and textStorage
           layoutManager.addTextContainer(textContainer)
           textStorage.addLayoutManager(layoutManager)
   
           // Configure textContainer
           textContainer.lineFragmentPadding = 0.0
           textContainer.lineBreakMode = label.lineBreakMode
           textContainer.maximumNumberOfLines = label.numberOfLines
           let labelSize = label.bounds.size
           textContainer.size = labelSize
   
           // Find the tapped character location and compare it to the specified range
           let locationOfTouchInLabel = self.location(in: label)
           let textBoundingBox = layoutManager.usedRect(for: textContainer)
           //let textContainerOffset = CGPointMake((labelSize.width - textBoundingBox.size.width) * 0.5 - textBoundingBox.origin.x,
           //(labelSize.height - textBoundingBox.size.height) * 0.5 - textBoundingBox.origin.y);
           let textContainerOffset = CGPoint(x: (labelSize.width - textBoundingBox.size.width) * 0.5 - textBoundingBox.origin.x, y: (labelSize.height - textBoundingBox.size.height) * 0.5 - textBoundingBox.origin.y)
   
           //let locationOfTouchInTextContainer = CGPointMake(locationOfTouchInLabel.x - textContainerOffset.x,
           // locationOfTouchInLabel.y - textContainerOffset.y);
           let locationOfTouchInTextContainer = CGPoint(x: locationOfTouchInLabel.x - textContainerOffset.x, y: locationOfTouchInLabel.y - textContainerOffset.y)
           let indexOfCharacter = layoutManager.characterIndex(for: locationOfTouchInTextContainer, in: textContainer, fractionOfDistanceBetweenInsertionPoints: nil)
           return NSLocationInRange(indexOfCharacter, targetRange)
       }
   }
   

Make sure to do:

lblTerms.isUserInteractionEnabled = true