Question

我在UIView中添加了Label并创建了它的插座，然后在UITapGestureRecognizer的帮助下我添加了功能，但是当我点击或点击标签时。标签文本不会更改。我搜索了类似的问题，我得到的答案也是我写的，但标签文字仍未改变。用Swift 3.0编写的代码。这是我写的代码 -

 import UIKit

class testingViewController: UIViewController {

    @IBOutlet weak var testLabel: UILabel!
    override func viewDidLoad() {
        super.viewDidLoad()
      let tap:UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(showDatePicker))
      tap.numberOfTouchesRequired = 1
      tap.numberOfTapsRequired = 1
      testLabel.addGestureRecognizer(tap)
      testLabel.isUserInteractionEnabled = true// after adding this it worked
        // Do any additional setup after loading the view.
    }

  func showDatePicker(){
    print("testing")
  }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


    /*
    // MARK: - Navigation

    // In a storyboard-based application, you will often want to do a little preparation before navigation
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        // Get the new view controller using segue.destinationViewController.
        // Pass the selected object to the new view controller.
    }
    */

}

Answer 1

是的，你可以，但你需要将标签的isUserInteractionEnabled标志设置为true

我们可以为UILabel添加Tap手势吗？

1 个答案: