Question

我正在我的项目中使用TGLParallaxCarousel库构建一个引用应用程序。我尝试在其上添加两个CustomView（favButton和shareButton）来自定义TGLParallaxCarouselItem UIButton。

screenshot to the quote cards (CustomView) I create

我能够根据其状态更改UIButton视图 - 无论当前引用是否有效，通过这样做：

convenience init(frame: CGRect, number: Int) {
   self.init(frame: frame)
   currentQuote = quoteData[number]
   favButton.tag = number
   currentQuote.faved == true ? favButton.setImage(#imageLiteral(resourceName: "fav-on"), for: .normal) : favButton.setImage(#imageLiteral(resourceName: "fav-off"), for: .normal)    
}

但是我需要通过单击favButton来打开和关闭fav。我尝试将favButton作为IBAction直接连接到XIB文件，尝试addAction运行，但我仍然无法访问favButton点击状态。

请帮忙。我该怎么办？

更新

我在favButton上试过addTarget。它不起作用。我的点击被检测为点击CustomView而不是特别是favButton。

这里是我点击CustomView上任意位置时触发的detectTap函数（包括在favButton上）。此函数位于TGLParallaxCarousel.swift

中

func detectTap(_ recognizer:UITapGestureRecognizer) {

    let targetPoint: CGPoint = recognizer.location(in: recognizer.view)
    currentTargetLayer = mainView.layer.hitTest(targetPoint)!

    guard let targetItem = findItemOnScreen() else { return }

    let firstItemOffset = (items.first?.xDisp ?? 0) - targetItem.xDisp
    let tappedIndex = -Int(round(firstItemOffset / xDisplacement))
    self.delegate?.carouselView(self, didSelectItemAtIndex: tappedIndex)

    if targetItem.xDisp == 0 {
        self.delegate?.carouselView(self, didSelectItemAtIndex: tappedIndex)
    }
    else {
        selectedIndex = tappedIndex
    }
}

Answer 1

您是否尝试使用addTarget？

convenience init(frame: CGRect, number: Int) {
    self.init(frame: frame)
    currentQuote = quoteData[number]
    favButton.tag = number
    currentQuote.faved == true ? favButton.setImage(#imageLiteral(resourceName: "fav-on"), for: .normal) : favButton.setImage(#imageLiteral(resourceName: "fav-off"), for: .normal) 

    favButton.addTarget(self, action: #selector(toggle), for: .touchUpInside)   
}

@objc fileprivate func toggle() {
    currentQuote.faved = !currentQuote.faved
    currentQuote.faved == true ? favButton.setImage(#imageLiteral(resourceName: "fav-on"), for: .normal) : favButton.setImage(#imageLiteral(resourceName: "fav-off"), for: .normal)
}

来自UIButton的触发操作单击自定义XIB

1 个答案: