swift - 将滑动手势识别器添加到 uilabel (swift)

Question

        let urgencyLabel = UILabel(frame:CGRectMake(renderWidth,0,80,60))
        urgencyLabel.text = "Urgency"
        view.addSubview(urgencyLabel)

如何向 uilabel 添加向左滑动手势识别器而不是整个 View Controller ？

Answer 1

这是一种可能的解决方案:

class ViewController: UIViewController {

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

    let urgencyLabel = UILabel(frame:CGRectMake(100,100,80,60))
    urgencyLabel.text = "Urgency"
    view.addSubview(urgencyLabel)
    urgencyLabel.userInteractionEnabled = true


    let myRecognizer = UISwipeGestureRecognizer(target: self, action: "swipeLeftFunc:")
    myRecognizer.direction = [.Left]

    urgencyLabel.addGestureRecognizer(myRecognizer)

}



func swipeLeftFunc(sender: UISwipeGestureRecognizer) {

        print("Swipe left")

}

使用以下方式启用用户交互很重要:

urgencyLabel.userInteractionEnabled = true