Swift4 - Xcode 9.2

Question

我想点击UILabel。

我试过这个，但它不起作用：

class DetailViewController: UIViewController {

    @IBOutlet weak var tripDetails: UILabel!

    override func viewDidLoad() {
        super.viewDidLoad()
        ...
        let tap = UITapGestureRecognizer(target: self, action: Selector("tapFunction:"))
        tripDetails.addGestureRecognizer(tap)
    }

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

Answer 1

您是否尝试在isUserInteractionEnabled标签上将true设为tripDetails？这应该有用。

Answer 2

Swift 3更新

替换

Selector("tapFunction:")

与

#selector(DetailViewController.tapFunction)

示例：

class DetailViewController: UIViewController {

    @IBOutlet weak var tripDetails: UILabel!

    override func viewDidLoad() {
        super.viewDidLoad()
        ...

        let tap = UITapGestureRecognizer(target: self, action: #selector(DetailViewController.tapFunction))
        tripDetails.isUserInteractionEnabled = true
        tripDetails.addGestureRecognizer(tap)
    }

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

Answer 3

SWIFT 4更新

 @IBOutlet weak var tripDetails: UILabel!

 override func viewDidLoad() {
    super.viewDidLoad()

    let tap = UITapGestureRecognizer(target: self, action: #selector(GameViewController.tapFunction))
    tripDetails.isUserInteractionEnabled = true
    tripDetails.addGestureRecognizer(tap)
}

@objc func tapFunction(sender:UITapGestureRecognizer) {

    print("tap working")
}

Answer 4

Swift 3更新

yourLabel.isUserInteractionEnabled = true

Answer 5

您需要启用该标签的用户互动.....

例如

yourLabel.userInteractionEnabled = true

Answer 6

对于swift 3.0您还可以更改手势长按持续时间

label.isUserInteractionEnabled = true
let longPress:UILongPressGestureRecognizer = UILongPressGestureRecognizer.init(target: self, action: #selector(userDragged(gesture:))) 
longPress.minimumPressDuration = 0.2
label.addGestureRecognizer(longPress)

Answer 7

好方便的解决方案：

在ViewController中：

@IBOutlet weak var label: LabelButton!

override func viewDidLoad() {
    super.viewDidLoad()

    self.label.onClick = {
        // TODO
    }
}

您可以将它放在ViewController或其他.swift文件中（例如CustomView.swift）：

@IBDesignable class LabelButton: UILabel {
    var onClick: () -> Void = {}
    override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
        onClick()
    }
}

在Storyboard中选择Label并在字段类“Identity Inspector”的右窗格中选择LabelButton。

不要忘记在Label Attribute Inspector中启用“启用用户交互”

Answer 8

谢谢researcher

这是我使用 UIKit 的程序化用户界面的解决方案。

我只在 Swift 5 上尝试过。它奏效了。

有趣的事实是您不必显式设置 isUserInteractionEnabled = true。

import UIKit

open class LabelButon: UILabel {
    var onClick: () -> Void = {}
    
    public override init(frame: CGRect) {
        super.init(frame: frame)
        isUserInteractionEnabled = true
    }
    
    public required init?(coder: NSCoder) {
        super.init(coder: coder)
    }
    
    public convenience init() {
        self.init(frame: .zero)
    }
    
    open override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
        onClick()
    }
}

用途：

override func viewDidLoad() {
    super.viewDidLoad()
    
    let label = LabelButton()
    label.text = "Label"
    label.onClick = {
        // TODO
    }
}

<块引用>

不要忘记设置约束。否则它不会出现在视图中。

Answer 9

快速5

类似于@liorco，但需要将 @objc 替换为 @IBAction 。

class DetailViewController: UIViewController {

    @IBOutlet weak var tripDetails: UILabel!

    override func viewDidLoad() {
        super.viewDidLoad()
        ...

        let tap = UITapGestureRecognizer(target: self, action: #selector(DetailViewController.tapFunction))
        tripDetails.isUserInteractionEnabled = true
        tripDetails.addGestureRecognizer(tap)
    }

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

这适用于Xcode 10.2。

Answer 10

像我一样容易忽略，但不要忘记使用UITapGestureRecognizer而不是UIGestureRecognizer。

Answer 11

如上述解决方案中所述您应首先启用用户互动并添加点按手势

此代码已使用

进行测试

Swift4 - Xcode 9.2

yourlabel.isUserInteractionEnabled = true
yourlabel.addGestureRecognizer(UITapGestureRecognizer(){
                //TODO 
            })

如何使UILabel可点击？

11 个答案:

Swift4 - Xcode 9.2