UITableViewCell中的UIView具有双边框

使用下面的代码，我添加了一个彩色边框并绕过了通过的角落。然而，当我调整UIView编程，老边区依然存在，我得到这个双边框：UITableViewCell中的UIView具有双边框

人有一个想法如何解决呢？我试过拨打cell.layoutSubviews()和cell.layer.layoutSublayers()。在设置边框之前，我尝试删除边框图层并将图层设置为nil。似乎没有任何工作。

如果我不调整视图的大小，那很好。

func roundCorners (view: UIView, corners: UIRectCorner, radius: CGFloat, color: String) { 
    let bounds = view.bounds 

    let maskPath = UIBezierPath(roundedRect: bounds, byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius)) 
    let maskLayer = CAShapeLayer() 
    maskLayer.frame = bounds 
    maskLayer.path = maskPath.cgPath 

    view.layer.mask = maskLayer 

    var borderColor = UIColor(red: 0/255.0, green: 0/255.0, blue: 0/255.0, alpha: 1.0) 
    switch color { 
    case "Green": 
     borderColor = UIColor(red: 130/255.0, green: 208/255.0, blue: 151/255.0, alpha: 0.9) 
    case "Red": 
     borderColor = UIColor(red: 243/255.0, green: 44/255.0, blue: 31/255.0, alpha: 1.0) 
     view.alpha = 0.5 
    case "Purp": 
     borderColor = UIColor(red: 102/255.0, green: 135/255.0, blue: 241/255.0, alpha: 0.7) 
    case "DarkBlue": 
     borderColor = UIColor(red: 90/255.0, green: 125/255.0, blue: 160/255.0, alpha: 0.6) 
    default: 
     borderColor = UIColor(red: 150/255.0, green: 150/255.0, blue: 150/255.0, alpha: 0.7) 
    } 

    let frameLayer = CAShapeLayer() 
    frameLayer.frame = bounds 
    frameLayer.path = maskPath.cgPath 
    frameLayer.strokeColor = borderColor.cgColor 
    frameLayer.lineWidth = 3 
    frameLayer.fillColor = nil 

    view.layer.addSublayer(frameLayer) 
}

从cellForRowAt调用：

roundCorners(view: cell.MoveCellTo_TodayList, corners: [.topLeft, .bottomLeft], radius: 8, color: "Green")

来源

2017-09-14 Dave G

移动maskLayer和frameLayer出功能的范围，并调用roundCorners内layoutSubviews细胞的覆盖。

var maskLayer: CAShapeLayer! 
var frameLayer: CAShapeLayer! 

override func layoutSubviews() { 
    super.layoutSubviews() 

    roundCorners(view: MoveCellTo_TodayList, maskLayer: &maskLayer, frameLayer: &frameLayer, corners: [.topLeft, .bottomLeft], radius: 8, color: "Green") 
} 

func roundCorners(view: UIView, maskLayer: inout CAShapeLayer, frameLayer: inout CAShapeLayer, corners: UIRectCorner, radius: CGFloat, color: String) { 
    let bounds = view.bounds 

    let maskPath = UIBezierPath(roundedRect: bounds, byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius)) 
    if maskLayer == nil { 
     maskLayer = CAShapeLayer() 
     view.layer.mask = maskLayer 

     frameLayer = CAShapeLayer() 
     view.layer.addSublayer(frameLayer) 
    } 

    [...] 
}

来源

2017-09-14 11:43:08 the4kman

UITableViewCell中的UIView具有双边框

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