UITapGestureRecognizer not working for specific [UIView] array

问题

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?

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")
        }
    }

回答1:

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()
}

来源：https://stackoverflow.com/questions/40510319/uitapgesturerecognizer-not-working-for-specific-uiview-array

标签

ios

swift

uiview

uigesturerecognizer

uitapgesturerecognizer