TextViewCell.swift

class TextViewCell: UITableViewCell {

    var onTap: ((URL) -> Void)?

    lazy var textView: UITextView = {
        let view = UITextView()
        view.translatesAutoresizingMaskIntoConstraints = false
        view.backgroundColor = UIColor(red: 1.0, green: 0, blue: 0, alpha: 0.1)
        view.textContainer.lineFragmentPadding = 0
        view.textContainerInset = .zero
        view.isEditable = false
        view.isScrollEnabled = false
        self.contentView.addSubview(view)
        NSLayoutConstraint.activate([
            view.topAnchor.constraint(equalTo: self.contentView.topAnchor),
            view.bottomAnchor.constraint(equalTo: self.contentView.bottomAnchor),
            view.leadingAnchor.constraint(equalTo: self.contentView.leadingAnchor, constant: 16),
            view.trailingAnchor.constraint(equalTo: self.contentView.trailingAnchor, constant: -16),
        ])
        let gesture = UITapGestureRecognizer(target: self, action: #selector(handleTextHit))
        view.addGestureRecognizer(gesture)
        return view
    }()

    @objc func handleTextHit(recognizer: UITapGestureRecognizer) {
        guard let view = recognizer.view as? UITextView else {
            return
        }
        let manager = view.layoutManager
        var location = recognizer.location(in: view)
        location.x = location.x - view.textContainerInset.left
        location.y = location.y - view.textContainerInset.top

        var charIndex = 0
        charIndex = manager.characterIndex(for: location, in: view.textContainer, fractionOfDistanceBetweenInsertionPoints: nil)

        if (charIndex < view.textStorage.length) {
            var range = NSRange()
            guard let value = view.attributedText.attribute(.custom, at: charIndex, effectiveRange: &range) as? String else {
                return
            }
            guard let url = URL(string: value) else {
                return
            }
            onTap?(url)
        }
    }
}