顏色轉(zhuǎn)換。代碼如下：

import UIKit
//擴(kuò)展部分
extension UIColor {
// 16進(jìn)制 轉(zhuǎn) RGBA
    class func rgbaColorFromHex(rgb:Int, alpha: CGFloat) ->UIColor {
        return UIColor(red: ((CGFloat)((rgb & 0xFF0000) >> 16)) / 255.0,
                       green: ((CGFloat)((rgb & 0xFF00) >> 8)) / 255.0,
                       blue: ((CGFloat)(rgb & 0xFF)) / 255.0,
                       alpha: alpha)
    }

//16進(jìn)制 轉(zhuǎn) RGB
    class func rgbColorFromHex(rgb:Int) -> UIColor {
        return UIColor(red: ((CGFloat)((rgb & 0xFF0000) >> 16)) / 255.0,
                       green: ((CGFloat)((rgb & 0xFF00) >> 8)) / 255.0,
                       blue: ((CGFloat)(rgb & 0xFF)) / 255.0,
                       alpha: 1.0)
    }
}