An UILabel subclass which allows you to show the "copy" MenuController item to copy its content to the pasteboard

CopyLabel.swift

import UIKit

class CopyLabel : UILabel {
  // MARK: Setup

  override init(frame: CGRect) {
    super.init(frame: frame)
    configureMenu()
  }

  required init?(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)
    configureMenu()
  }

  private func configureMenu() {
    self.isUserInteractionEnabled = true
    let gestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(showMenu(_:)))
    self.addGestureRecognizer(gestureRecognizer)
    NotificationCenter.default.addObserver(self, selector: #selector(onHideMenu(_:)), name: UIMenuController.didHideMenuNotification, object: nil)
  }

  // MARK: UIResponder

  override var canBecomeFirstResponder: Bool {
    return true
  }

  override func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool {
    return action == #selector(copy(_:))
  }

  override func copy(_ sender: Any?) {
    UIPasteboard.general.string = text
  }

  // MARK: UIMenuController

  @objc
  private func showMenu(_ recognizer: UIGestureRecognizer) {
    guard let superView = self.superview else { return }
    self.becomeFirstResponder()

    self.setSelectionFeedback(selected: true)
    let menuController = UIMenuController.shared
    menuController.setTargetRect(self.frame, in: superView)
    menuController.setMenuVisible(true, animated: true)
  }

  @objc
  private func onHideMenu(_ notification: NSNotification) {
    self.setSelectionFeedback(selected: false)
  }

  private func setSelectionFeedback(selected: Bool) {
    guard let attrStr = self.attributedText else { return }
    let mut = NSMutableAttributedString(attributedString: attrStr)
    let str = attrStr.string
    let range = NSRange(str.startIndex..<str.endIndex, in: str)
    if selected {
      let selectionColor = UIColor(red: 0.7, green: 0.7, blue: 1.0, alpha: 0.8)
      mut.addAttribute(.backgroundColor, value: selectionColor, range: range)
    } else {
      mut.removeAttribute(.backgroundColor, range: range)
    }
    self.attributedText = mut
  }
}

class DemoViewController: UIViewController {
  override func viewDidLoad() {
    super.viewDidLoad()
    self.view.backgroundColor = .white

    let frame = CGRect(x: 20, y: 350, width: 335, height: 40)
    let label = CopyLabel(frame: frame)
    label.backgroundColor = UIColor(white: 0.9, alpha: 1.0)
    label.text = "https://alisoftware.github.io/"
    label.textAlignment = .center
    self.view.addSubview(label)
  }
}