Create Multiple Tappable Links in a UILabel

MultipleTapLabel.swift

extension UITapGestureRecognizer {
    func didTapAttributedTextInLabel(label: UILabel, targetText: String) -> Bool {
        guard let attributedString = label.attributedText, let lblText = label.text else { return false }
        let targetRange = (lblText as NSString).range(of: targetText)
        //IMPORTANT label correct font for NSTextStorage needed
        let mutableAttribString = NSMutableAttributedString(attributedString: attributedString)
        mutableAttribString.addAttributes(
            [NSAttributedString.Key.font: label.font ?? UIFont.smallSystemFontSize],
            range: NSRange(location: 0, length: attributedString.length)
        )
        // Create instances of NSLayoutManager, NSTextContainer and NSTextStorage
        let layoutManager = NSLayoutManager()
        let textContainer = NSTextContainer(size: CGSize.zero)
        let textStorage = NSTextStorage(attributedString: mutableAttribString)

        // 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 = 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 = 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)
    }

}

//For example adding uilabel then setup
let lblPrivacyTerm = UILabel()
    func setupMultipleTapLabel() {
        lblPrivacyTerm.text = "By signing up you agree to our Terms of service and Privacy policy ending"
        let text = (lblPrivacyTerm.text)!
        let underlineAttriString = NSMutableAttributedString(string: text)
        let termsRange = (text as NSString).range(of: "Terms of service")
        let privacyRange = (text as NSString).range(of: "Privacy policy")
        underlineAttriString.addAttribute(.foregroundColor, value: UIColor.blue, range: termsRange)
        underlineAttriString.addAttribute(NSAttributedString.Key.underlineStyle, value: NSUnderlineStyle.single.rawValue, range: privacyRange)
        lblPrivacyTerm.attributedText = underlineAttriString
        let tapAction = UITapGestureRecognizer(target: self, action: #selector(self.tapLabel(gesture:)))
        lblPrivacyTerm.isUserInteractionEnabled = true
        lblPrivacyTerm.addGestureRecognizer(tapAction)
    }

@IBAction func tapLabel(gesture: UITapGestureRecognizer) {
        if gesture.didTapAttributedTextInLabel(label: lblPrivacyTerm, targetText: "Terms of service") {
            print("Terms of service")
        } else if gesture.didTapAttributedTextInLabel(label: lblPrivacyTerm, targetText: "Privacy policy") {
            print("Privacy policy")
        } else {
            print("Tapped none")
        }
}

For some unknown reason, if the label has a center alignment, the locationOfTouchInLabel messed up

switch label.textAlignment {
case .left, .natural, .justified:
alignmentOffset = 0.0
case .center:
alignmentOffset = 0.5
case .right:
alignmentOffset = 1.0
}
let bounds = label.bounds
let xOffset = ((bounds.size.width - textBoundingBox.size.width) * alignmentOffset) - textBoundingBox.origin.x
let yOffset = ((bounds.size.height - textBoundingBox.size.height) * alignmentOffset) - textBoundingBox.origin.y
let textContainerOffset = CGPoint(x: locationOfTouchInLabel.x - xOffset, y: locationOfTouchInLabel.y - yOffset)

it is incorrectly

Its not working when text goes into multiline .It takes click to last second word.

Does not work with multiple links multiple lines unfortunately

unfortunately, its stop working in swift 4 and above

not working it detect before it

Any update on multiple lines?

Any update on multiple lines?

Its working check revisions 5

its not working

did any one find solution of multiline label? I tried latest version but somehow it did not work on swift 5.

Setting

textContainer.lineBreakMode = .byCharWrapping

worked for me.

its not working

Setting

textContainer.lineBreakMode = .byCharWrapping

worked for me.

this code only work for charWrapping or wordWraping line break mode of Label. In default, line break mode of label is truncate tail so the result when label have multi line went wrong

have this code in obj-c ?

Not working for arabic text. any solution ?