小编Zeu*_*nal的帖子

let startingColorOfGradient = UIColor(colorLiteralRed: 255/255, green: 
255/255, blue: 255/255, alpha: 1.0).cgColor
let endingColorOFGradient = UIColor(colorLiteralRed: 251/255, green: 
247/255, blue: 234/255, alpha: 1.0).cgColor
let gradient: CAGradientLayer = CAGradientLayer()

错误:

'init(colorLiteralRed:green:blue:alpha :)'在Swift 4.0中被淘汰(Swift._ExpressibleByColorLiteral)

如果init(colorLiteralRed:,green:,blue:,alpha:)在Swift 4中弃用,如何使用渐变颜色？