UIImageView与贴纸并在贴纸上添加手势

我有一个ImageView和贴纸上它现在我想在该贴纸上添加手势，一切工作正常，但是，我的贴纸从UIImageView的图层出去，如图所示。我只想在ImageView的边界内粘贴手势。UIImageView与贴纸并在贴纸上添加手势

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把手方法如下：

   addStickers(image: #imageLiteral(resourceName: "Sticker1.png"))

FUNC handlePanGesture（_识别：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 
    } 

}

来源

2017-09-11 Khushbu Desai

我目前正在解决同样的问题。到目前为止，花费的时间并不多，但这里有一个潜在的有用链接 - 诀窍是*写*代码以使其保持在您希望保留的范围内。 https://stackoverflow.com/questions/16460229/why-a-subview-wont-stay-in-the-parent-frame#16460566（它似乎是示例代码 - 是的，复数 - 所有的行为也是这样。） – dfd

尝试将self.viewself.view.addSubview(imgSticker)替换为正在编辑的图像的ImageView，即将贴图粘贴到其上的那个图像。希望能帮助到你。

所以，它应该是这样的 - imageView.addSubview(stickerOnImg)。我之前有同样的问题，这对我有用。

来源

2017-11-15 14:12:10

UIImageView与贴纸并在贴纸上添加手势

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