我有一个 ImageView 和上面的贴纸，现在我想在那个贴纸上添加手势，一切正常，但是，我的贴纸从 UIImageView 的图层中出来，如图所示。我只想在 ImageView 的边界内使用贴纸手势。
以下是我的代码:
func addStickers(image: UIImage) {
gesture = "Stickers"
imgSticker = UIImageView(frame: CGRect.init(x: 0.0, y: 0.0, width: 80, height: 80))
imgSticker.center = view.center
imgSticker.image = image
imgSticker.contentMode = UIViewContentMode.scaleAspectFill
imgSticker.isUserInteractionEnabled = true
self.view.addSubview(imgSticker)
//imgImage.addSubview(imgSticker)
panGesture = UIPanGestureRecognizer.init(target: self, action: #selector(handlePanGesture(_:)))
panGesture.delegate = self
pinchGesture = UIPinchGestureRecognizer.init(target: self, action: #selector(handlePinchGesture(_:)))
pinchGesture.delegate = self
rotateGesture = UIRotationGestureRecognizer.init(target: self, action: #selector(handleRotateGesture(_:)))
rotateGesture.delegate = self
imgSticker.addGestureRecognizer(panGesture)
imgSticker.addGestureRecognizer(pinchGesture)
imgSticker.addGestureRecognizer(rotateGesture)
}
我调用这个函数和我的句柄方法如下:
addStickers(image: #imageLiteral(resourceName: "Sticker1.png"))
func handlePanGesture(_ recognizer: UIPanGestureRecognizer) {
if gesture == "Stickers" {
let recognizerCenter = recognizer.location(in: self .view)
imgSticker.center = recognizerCenter
} else {
let recognizerCenter = recognizer.location(in: self.view)
txtLabel.center = recognizerCenter
}
}
func handlePinchGesture(_ recognizer: UIPinchGestureRecognizer) {
if gesture == "Stickers" {
imgSticker.transform = imgSticker.transform.scaledBy(x: recognizer.scale, y: recognizer.scale)
recognizer.scale = 1.0
} else {
txtLabel.transform = txtLabel.transform.scaledBy(x: recognizer.scale, y: recognizer.scale)
recognizer.scale = 1.0
}
}
func handleRotateGesture(_ recognizer: UIRotationGestureRecognizer) {
if gesture == "Stickers" {
imgSticker.transform = imgSticker.transform.rotated(by: recognizer.rotation)
recognizer.rotation = 0.0
} else {
txtLabel.transform = txtLabel.transform.rotated(by: recognizer.rotation)
recognizer.rotation = 0.0
}
}
最佳答案
尝试将 self.view.addSubview(imgSticker) 中的 self.view 替换为正在编辑的图像的 ImageView，即您将贴纸贴在上面的图像。希望能帮助到你。
所以，它应该是这样的 - imageView.addSubview(stickerOnImg)。我以前遇到过同样的问题，这对我有用。
关于swift - 带有贴纸的 UIImageView 并在贴纸上添加手势，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/46149840/