swift 自定义上下文菜单 previewprovider 不能点击里面的任何视图（使用点击手势）

Question

我正在处理类似消息的反应，这就是我所做的（使用 contextMenu 中的 customProvider）

下面是我向 customProvider 控制器添加表情符号动作时的代码

private func addReactionList(_ items : [Reaction]) -> UIView{
        let reactionView = UIView()
      
        
        var arrangedSubviews: [UIView] = []
        
        for reaction in items {
            let imgView = UIImageView(image: AppUtils.reactionToImage(reaction: reaction))
            imgView.isUserInteractionEnabled = true
            imgView.frame = CGRect(x: 0, y: 0, width: iconHeight, height: iconHeight)
            imgView.layer.cornerRadius = (imgView.frame.height) / 2
            imgView.layer.masksToBounds = true
            imgView.layer.borderColor = UIColor.clear.cgColor
            imgView.layer.borderWidth = 0
            imgView.contentMode = .scaleAspectFit
            imgView.restorationIdentifier = reaction.Type
            
            
            let tapGesture = UITapGestureRecognizer(target: self, action: #selector(handleTapGesture(_:)))
            tapGesture.delegate = self
            tapGesture.numberOfTapsRequired = 1
            tapGesture.delaysTouchesBegan = true
            tapGesture.cancelsTouchesInView = false
            imgView.isUserInteractionEnabled = true
            imgView.addGestureRecognizer(tapGesture)
            
            arrangedSubviews.append(imgView)
        }
        
        let stackView = UIStackView(arrangedSubviews: arrangedSubviews)
        stackView.distribution = .fillEqually
        stackView.spacing = padding
        stackView.layoutMargins = UIEdgeInsets(top: padding, left: padding, bottom: padding, right: padding)
        stackView.isLayoutMarginsRelativeArrangement = true
        
        let width = (CGFloat(items.count) * iconHeight) + (CGFloat(items.count+1) * padding)
        reactionView.frame = CGRect(x: 0, y: 0, width: width, height: iconHeight + 2 * padding)
        reactionView.layer.cornerRadius = 12
        reactionView.addSubview(stackView)
        stackView.frame = reactionView.frame
        stackView.isUserInteractionEnabled = false
        reactionView.isUserInteractionEnabled = false
        
        return reactionView
    }

然后我将其添加到自定义提供程序 vc:

let actionsReacts = addReactionList(likeReactions)
        let emojiReacts = addReactionList(emojiReactions)
        if let snap = customView.snapshotView(afterScreenUpdates: true) as UIView?{
            view.addSubview(snap)
            view.addSubview(actionsReacts)
            view.addSubview(emojiReacts)
            
            let maxWidth = snap.frame.size.width >= actionsReacts.frame.size.width ? snap.frame.size.width : actionsReacts.frame.size.width
            
            var currentSnapFrame = snap.frame
            currentSnapFrame = CGRect(Int((maxWidth - snap.frame.size.width)) / 2, 0 , Int(snap.frame.size.width), Int(snap.frame.size.height))
            snap.frame = currentSnapFrame
            
            var currentActionsReactFrame = actionsReacts.frame
            currentActionsReactFrame = CGRect(0, Int(snap.frame.size.height), Int(actionsReacts.frame.size.width), Int(actionsReacts.frame.size.height))
            actionsReacts.frame = currentActionsReactFrame
            
            var currentEmojiReactFrame = actionsReacts.frame
            currentEmojiReactFrame = CGRect(0, Int(snap.frame.size.height) + Int(emojiReacts.frame.size.height), Int(emojiReacts.frame.size.width), Int(emojiReacts.frame.size.height))
            emojiReacts.frame = currentEmojiReactFrame
            
            
            preferredContentSize = CGSize(width: maxWidth, height: snap.frame.size.height + actionsReacts.frame.size.height + emojiReacts.frame.size.height)
        }

但手势无法触发，我尝试将 img 更改为按钮，但仍然无法点击

@objc func handleTapGesture(_ sender : UITapGestureRecognizer){
        let tappedImage = sender.view as! UIImageView
        let reactionType = tappedImage.restorationIdentifier ?? ""
        onSelectedReaction?(reactionType)
    }
    
    func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldReceive touch: UITouch) -> Bool {
        return true
    }
    
    func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
        return true
    }

我不知道为什么我不能点击任何地方，即使我试图添加手势点击到 viewcontroller 视图。谁能解释一下？提前致谢

Answer 1

我换了新的VC，英雄动画，好无聊，不过是我目前最好的选择

Answer 2

我试图根据您提供的内容重建您的演示应用程序，但我仍然不清楚您的代码是什么或它的行为方式。

我注意到一件事，您正在创建

n

手势识别器并将每个手势识别器连接到图像视图。 请尝试使用 1 个手势识别器。将它挂接到您的父视图，并在点击事件时，获取被击中的子视图。

一些代码：

 let tap = UITapGestureRecognizer(target: self, action: #selector(self.onViewTap))
 parentView.addGestureRecognizer(tap)

@objc func onViewTap(_ sender: UITapGestureRecognizer) {
    let point = sender.location(in: containerView)
    if let hitSubview = parentView.hitTest(point, with: nil) {
 // check which subview (imageView) is being hit by checking its tag or similar
}

Answer 3

https://github.com/Hungs20/Reaction-message-ContextMenu。这是我的解决方案，使用 UITargetedPreview 显示自定义视图

@available(iOS 13.0, *)
func tableView(_ tableView: UITableView, previewForHighlightingContextMenuWithConfiguration configuration: UIContextMenuConfiguration) -> UITargetedPreview? {
    // makeTargetedPreview
}

@available(iOS 13.0, *)
func tableView(_ tableView: UITableView, previewForDismissingContextMenuWithConfiguration configuration: UIContextMenuConfiguration) -> UITargetedPreview? {
    // makeTargetedDismissPreview
}