'CGPointMake' 在 swift 中不可用 [英] 'CGPointMake' is unavailable in swift

问题描述

我有一个 Gradient 类，我正在尝试将其转换为 Swift 3，但出现以下错误

I have a Gradient class which I am trying to convert to Swift 3 but I get the following error

'CGPointMake' 在 swift 中不可用

'CGPointMake' is unavailable in swift

为了

func configureGradientView() {

    let color1 = topColor ?? self.tintColor as UIColor
    let color2 = bottomColor ?? UIColor.black as UIColor
    let colors: Array <AnyObject> = [ color1.cgColor, color2.cgColor ]
    let layer = self.layer as! CAGradientLayer

    layer.colors = colors
    layer.startPoint = CGPointMake(startX, startY)
    layer.endPoint = CGPointMake(endX, endY)
}

谁能帮我用什么来代替 CGPointMake

Can anyone help me out with what I can use instead of CGPointMake

这是完整的课程；

@IBDesignable public class XGradientView: UIView {

@IBInspectable public var topColor: UIColor? {
    didSet {
        configureGradientView()
    }
}
@IBInspectable public var bottomColor: UIColor? {
    didSet {
        configureGradientView()
    }
}
@IBInspectable var startX: CGFloat = 0.0 {
    didSet{
        configureGradientView()
    }
}
@IBInspectable var startY: CGFloat = 1.0 {
    didSet{
        configureGradientView()
    }
}
@IBInspectable var endX: CGFloat = 0.0 {
    didSet{
        configureGradientView()
    }
}
@IBInspectable var endY: CGFloat = 0.0 {
    didSet{
        configureGradientView()
    }
}

public class func layeredClass() -> AnyClass {
    return CAGradientLayer.self
}

public required init(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)!
    configureGradientView()
}

override init(frame: CGRect) {
    super.init(frame: frame)
    configureGradientView()
}

public override func tintColorDidChange() {
    super.tintColorDidChange()
    configureGradientView()
}

func configureGradientView() {

    let color1 = topColor ?? self.tintColor as UIColor
    let color2 = bottomColor ?? UIColor.black as UIColor
    let colors: Array <AnyObject> = [ color1.cgColor, color2.cgColor ]
    let layer = self.layer as! CAGradientLayer

    layer.colors = colors
    layer.startPoint = CGPointMake(startX, startY)
    layer.endPoint = CGPointMake(endX, endY)
}
}

推荐答案

在swift中你可以用swifty的方式创建一个CGPoint CGPoint(x: xPos, y:yPos).因此，将您的 CGPointMake(startX, startY) 更改为 CGPoint(x: startX, y: startY)

In swift you can create a CGPoint in swifty way CGPoint(x: xPos, y:yPos). So change your CGPointMake(startX, startY) to CGPoint(x: startX, y: startY)

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