视图未检测到滑动图像库的手势识别器

Posted 2023-02-23

【中文标题】视图未检测到滑动图像库的手势识别器

【英文标题】：View is not detecting Gesture Recognizer for swipe image gallery

【发布时间】：2020-04-27 20:49:09

【问题描述】：

我想在我的CustomShareExtensionViewController 中添加一个SwipeImageGallery，但现在它没有检测到gestures，我不知道为什么。

图片：

let images: [UIImage] = [
            UIImage(named: "avocadoImage")!,        // 0
            UIImage(named: "beerImage")!,           // 1
            UIImage(named: "bikeImage")!,           // 2
            UIImage(named: "christmasImage")!,      // 3
            UIImage(named: "dressImage")!,          // 4
            UIImage(named: "giftImage")!,           // 5
            UIImage(named: "rollerImage")!,         // 6
            UIImage(named: "shirtImage")!,          // 7
            UIImage(named: "shoeImage")!,           // 8
            UIImage(named: "travelImage")!,         // 9
            UIImage(named: "iconRoundedImage")!,
]

ViewDidLoad：

let swipeRight = UISwipeGestureRecognizer(target: self, action: #selector(respondToSwipeGesture))
swipeRight.direction = UISwipeGestureRecognizer.Direction.right
self.view.addGestureRecognizer(swipeRight)

let swipeLeft = UISwipeGestureRecognizer(target: self, action: #selector(respondToSwipeGesture))
swipeLeft.direction = UISwipeGestureRecognizer.Direction.left
self.view.addGestureRecognizer(swipeLeft)

respondToGesture：

@objc func respondToSwipeGesture(gesture: UIGestureRecognizer) 

    if let swipeGesture = gesture as? UISwipeGestureRecognizer 

        switch swipeGesture.direction 
        case UISwipeGestureRecognizer.Direction.left:
            if currentImage == images.count - 1 
                currentImage = 0

            else
                currentImage += 1
            
            swipeImageView.image = images[currentImage]

        case UISwipeGestureRecognizer.Direction.right:
            if currentImage == 0 
                currentImage = images.count - 1
            else
                currentImage -= 1
            
            swipeImageView.image = images[currentImage]
        default:
            break
        
    

我从this SO-post 收到了这个code。我做错什么了吗？我不知道我做错了什么......

【问题讨论】：

你有 swipeImageView 的 isUserInteractionEnabled 吗？

@HalR 之前没有，但我更改了它并没有解决问题。另一件事是，一开始根本没有显示图像。

【参考方案1】：

点击图像视图，然后转到属性检查器并确保您已启用启用用户交互