UITapGestureRecognizer 不适用于特定的 [UIView] 数组 [英] UITapGestureRecognizer not working for specific [UIView] array

问题描述

我有以下一段代码.它是菜单的第三方库(名为 CarbonKit).当我尝试选择特定段(选项卡)并添加手势识别器时，它不起作用.任何想法我做错了什么?

I have the following piece of code. It's a third party library for a menu (named CarbonKit). When I try to select a specific segment (tab) and add a gesture recognizer, it doesn't work. Any ideas what I'm doing wrong?

说清楚一点，我在handleTap中放置了一个断点，它甚至没有进入函数.

To be clear, I placed a breakpoint in the handleTap, it it doesn't even enter the function.

    override func viewDidLoad() {
        super.viewDidLoad()
        self.view.userInteractionEnabled = true
        let tgr : UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(OverviewFolder.handleTap(_:)))
        // segment 2 (categories)
        carbonTabSwipeNavigation.carbonSegmentedControl?.segments![2].userInteractionEnabled = true
        carbonTabSwipeNavigation.carbonSegmentedControl?.segments![2].addGestureRecognizer(tgr)
}

 // tap
    func handleTap(gestureRecognizer : UITapGestureRecognizer){
        let test = carbonTabSwipeNavigation.currentTabIndex
        if test == 2 {
            print("second item tapped")
        }
    }

推荐答案

如果第 3 方 UISegmentedControl 与通用 UISegmentedControl 类似，那么您已经拥有了所需的一切.这是我的一些代码.如果您使用的是 IB，请将控件连接到 IBAction.

If the 3rd party UISegmentedControl is like the generic one, you already have everything you need. Here's some of my code. If you are using IB, wire the control up to an IBAction instead.

let imageSegments = UISegmentedControl (items: ["Original","Stained"])

override func viewDidLoad() {
    super.viewDidLoad()
    imageSegments.tintColor = UIColor.yellow
    imageSegments.selectedSegmentIndex = 1
    imageSegments.addTarget(self, action: #selector(changeImageView), for: .valueChanged)
    view.addSubview(imageSegments)
}

func changeImageView() {
    switch imageSegments.selectedSegmentIndex {
    case 0:
        imageView.image = imgOriginal
    case 1:
        imageView.image = imgEdited
    default:
        break
    }
    imageView.setNeedsDisplay()
}

这篇关于UITapGestureRecognizer 不适用于特定的 [UIView] 数组的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！