一番簡単なラベルのタッチ処理 by Swift3

    @IBOutlet weak var YourLabel: UILabel!

    override func viewDidLoad() {
        super.viewDidLoad()
        let tap = UITapGestureRecognizer(target: self, action: #selector(クラスの名前.tapFunction))
        YourLabel.isUserInteractionEnabled = true
        YourLabel.addGestureRecognizer(tap)
    }

    func tapFunction(sender:UITapGestureRecognizer) {
        print("tap working")
    }