如何在swift中突出显示文本时触发事件

let label = UILabel(frame: CGRect(x: 0, y: 0, width: 200, height: 50))
label.text = "点击这里触发事件"

let attributedString = NSMutableAttributedString(string: label.text!)

let range = (label.text! as NSString).range(of: "点击这里")
attributedString.addAttribute(.underlineStyle, value: NSUnderlineStyle.single.rawValue, range: range)
attributedString.addAttribute(.foregroundColor, value: UIColor.blue, range: range)

label.isUserInteractionEnabled = true
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(handleTap(_:)))
label.addGestureRecognizer(tapGesture)

@objc func handleTap(_ gesture: UITapGestureRecognizer) {
    print("触发了点击事件")
}

import UIKit

class ViewController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let label = UILabel(frame: CGRect(x: 0, y: 0, width: 200, height: 50))
        label.text = "点击这里触发事件"
        
        let attributedString = NSMutableAttributedString(string: label.text!)
        let range = (label.text! as NSString).range(of: "点击这里")
        attributedString.addAttribute(.underlineStyle, value: NSUnderlineStyle.single.rawValue, range: range)
        attributedString.addAttribute(.foregroundColor, value: UIColor.blue, range: range)
        
        label.attributedText = attributedString
        
        label.isUserInteractionEnabled = true
        let tapGesture = UITapGestureRecognizer(target: self, action: #selector(handleTap(_:)))
        label.addGestureRecognizer(tapGesture)
        
        view.addSubview(label)
    }
    
    @objc func handleTap(_ gesture: UITapGestureRecognizer) {
        print("触发了点击事件")
    }
}