分类扩展方法
2018-05-21 本文已影响10人
流年易逝_李
extension UIColor {
static func color(_ red: Int, green: Int, blue: Int, alpha: Float) -> UIColor {
return UIColor(
red: 1.0 / 255.0 * CGFloat(red),
green: 1.0 / 255.0 * CGFloat(green),
blue: 1.0 / 255.0 * CGFloat(blue),
alpha: CGFloat(alpha))
}
}
