Swift中的宏定义

其实swift没有宏定义这个概念，但是我们可以用其他方法来代替。

如下：创建一个swift file

//返回RGB颜色值

func RGBA (r:CGFloat, g:CGFloat, b:CGFloat, a:CGFloat)->UIColor { return UIColor (red: r/255.0, green: g/255.0, blue: b/255.0, alpha: a) }

//返回view的x值

func x(object: UIView)->CGFloat{

    return object.frame.origin.x;

}

//返回view的y值

func y(object: UIView)->CGFloat{

    return object.frame.origin.y;

}

//返回view的width

func width(object: UIView)->CGFloat{

    return object.frame.size.width;

}

//返回view的height

func height (object: UIView)->CGFloat{

    return object.frame.size.height;

}

//屏幕宽度

let screen_width = UIScreen.mainScreen().bounds.size.width;

//屏幕高度

let screen_height = UIScreen.mainScreen().bounds.size.height;

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URL的配置等

let kaddress  = "http://120.26.141.141:8080/herose/api/"

let  kPhotoAddress = "http://120.26.141.141:8080/herose"

/**获取首页菜单列表**/

let kGetMainPageCommItemsUrl  =kaddress+"info_getAllInfo.do"