Swift随机颜色 - lidaoyuan/Notes GitHub Wiki

extension UIColor {
    // 返回随机颜色
    class var randomColor: UIColor {
        get {
            let red = CGFloat(arc4random() % 256) / 255.0
            let green = CGFloat(arc4random() % 256) / 255.0
            let blue = CGFloat(arc4random() % 256) / 255.0
            return UIColor(red: red, green: green, blue: blue, alpha: 1.0)
        }
    }
}