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lynxerzhang/ColorRandom.swift

Created December 14, 2015 08:42
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  1. lynxerzhang created this gist Dec 14, 2015.
    17 changes: 17 additions & 0 deletions ColorRandom.swift
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,17 @@
    //Jared Davidson's Random Colorization
    //run in xcode7.1 and swift2.1
    //drand48返回0 － 1的随机Double数值
    var red = CGFloat(drand48())
    var green = CGFloat(drand48())
    var blue = CGFloat(drand48())

    var view = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))
    //随机色
    view.backgroundColor = UIColor(red: red, green: green, blue: blue, alpha: 1.0)

    //根据对应的red,green,blue数值返回UIColor对象(0 - 255)
    func rgbColor(red: Int, _ green: Int, _ blue: Int) -> UIColor
    {
    return UIColor(red: CGFloat(red) / 0xFF, green: CGFloat(green) / 0xFF, blue: CGFloat(blue) / 0xFF, alpha: 1.0)
    }
    view.backgroundColor = rgbColor(255, 255, 0) //纯黄色的背景