使用Swift访问数组和字典？

Question

我正在尝试使用以下功能组装UIColor：

var backgroundColor: UIColor = UIColor.clearColor()    

let colorsDictionary = chemistryDictionary["backgroundColor"] as! [String: CGFloat]

    backgroundColor = rgbColorFromDictionary(colorsDictionary)
}

func rgbColorFromDictionary(colorDictionary: [String: CGFloat]) -> UIColor {
    let red = colorDictionary["red"]!
    let green = colorDictionary["green"]!
    let blue = colorDictionary["blue"]!
    let alpha = colorDictionary["alpha"]!

    return UIColor(red: red/255.0, green: green/255.0, blue: blue/255.0, alpha: alpha)
}
}

我正在从下面的库（使用比例键）中绘制他的颜色化妆：

struct ColorMatchLibrary {
let library = [

// pH Array
[   "title": "pH",
"description": "Most living things depend on proper pH level to sustain life.",
"scale":
["6.2":
["red": 212, "green": 142, "blue": 69, "alpha": 1.0],

"6.8":
["red": 209, "green": 122, "blue": 31, "alpha": 1.0],

"7.2":
["red": 196, "green": 80, "blue": 9, "alpha": 1.0],

"7.8":
["red": 194, "green": 74, "blue": 58, "alpha": 1.0],

"8.4":
["red": 208, "green": 48, "blue": 75, "alpha": 1.0]
]
],
// Ammonia Array

[   "title": "Ammonia",
"description": "",
"scale":
[
"0":
["red": 244, "green": 235, "blue": 130, "alpha": 1.0],
".25":
["red": 233, "green": 233, "blue": 156, "alpha": 1.0],
".5":
["red": 223, "green": 238, "blue": 141, "alpha": 1.0],
"1.0":
["red": 221, "green": 236, "blue": 210, "alpha": 1.0],
"3.0":
["red": 202, "green": 227, "blue": 191, "alpha": 1.0],
"6.0":
["red": 186, "green": 216, "blue": 173, "alpha": 1.0]
]
]


]
}

我想知道函数是否使用了错误的参数，或者是否必须修改代码以适合该函数。 我尝试修改参数，但出现大量错误。 所以我想我的问题如下：

我将如何创建一个接受比例尺颜色值的函数，或者，如果该方法不起作用，是否必须整体更改代码或更改库本身？

这是我所有的代码：

var backgroundColor: UIColor = UIColor.clearColor()    

let colorsDictionary = chemistryDictionary["backgroundColor"] as! [String: CGFloat]

    backgroundColor = rgbColorFromDictionary(colorsDictionary)
}

func rgbColorFromDictionary(colorDictionary: [String: CGFloat]) -> UIColor {
    let red = colorDictionary["red"]!
    let green = colorDictionary["green"]!
    let blue = colorDictionary["blue"]!
    let alpha = colorDictionary["alpha"]!

    return UIColor(red: red/255.0, green: green/255.0, blue: blue/255.0, alpha: alpha)
}
}  

其他档案：

struct ColorMatchLibrary {
let library = [

// pH Array
[   "title": "pH",
"description": "Most living things depend on proper pH level to sustain life.",
"scale":
["6.2":
["red": 212, "green": 142, "blue": 69, "alpha": 1.0],

"6.8":
["red": 209, "green": 122, "blue": 31, "alpha": 1.0],

"7.2":
["red": 196, "green": 80, "blue": 9, "alpha": 1.0],

"7.8":
["red": 194, "green": 74, "blue": 58, "alpha": 1.0],

"8.4":
["red": 208, "green": 48, "blue": 75, "alpha": 1.0]
]
],
// Ammonia Array

[   "title": "Ammonia",
"description": "",
"scale":
[
"0":
["red": 244, "green": 235, "blue": 130, "alpha": 1.0],
".25":
["red": 233, "green": 233, "blue": 156, "alpha": 1.0],
".5":
["red": 223, "green": 238, "blue": 141, "alpha": 1.0],
"1.0":
["red": 221, "green": 236, "blue": 210, "alpha": 1.0],
"3.0":
["red": 202, "green": 227, "blue": 191, "alpha": 1.0],
"6.0":
["red": 186, "green": 216, "blue": 173, "alpha": 1.0]
]
]
]
}

任何建议或意见，不胜感激。 请在答案中保留更新，删除，添加或替换的代码，并说明您为什么这样做。

提前致谢。

编辑

我将如何修改以下代码以适应更改？

struct Chemistry {

var title: String?
var description: String?
var backgroundColor: UIColor = UIColor.clearColor()

init(index: Int) {
    let colorMatchLibrary = ColorMatchLibrary.library
    let chemistryDictionary = colorMatchLibrary[index]

    title = chemistryDictionary["title"] as! String!
    description = chemistryDictionary["description"] as! String!

    let colorsDictionary = chemistryDictionary["backgroundColor"] as! [String: UIColor]

    backgroundColor = rgbColorFromDictionary(colorsDictionary)
}

func rgbColorFromDictionary(colorDictionary: [String: UIColor]) -> UIColor {
   let red = colorDictionary["red"]!
   let green = colorDictionary["green"]!
   let blue = colorDictionary["blue"]!
   let alpha = colorDictionary["alpha"]!

   return UIColor(red: red/255.0, green: green/255.0, blue: blue/255.0, alpha: alpha)
}
}

Answer 1

尝试这种类型的组织：

struct ColorMatchInfo {
  let title:String
  let description:String
  let scaleColors:[String:UIColor]
}

extension UIColor {
  convenience init(red:Int, green:Int, blue:Int) {
    self.init(red: CGFloat(red)/255.0, green: CGFloat(green)/255.0, blue: CGFloat(blue)/255.0, alpha: 1.0)
  }
}

let colorMatches = [
  ColorMatchInfo(title: "ph",
                 description: "Most living things depend on proper pH level to sustain life.",
                 scaleColors: [
                  "6.2": UIColor(red: 212, green: 142, blue: 69),
                  "6.8": UIColor(red: 209, green: 122, blue: 31),
                  "7.2": UIColor(red: 196, green:  80, blue:  9),
                  "7.8": UIColor(red: 194, green:  74, blue: 58),
                  "8.4": UIColor(red: 208, green:  48, blue: 75)
    ]),
  ColorMatchInfo(title: "Ammonia",
                 description: "",
                 scaleColors: [
                  "0.00": UIColor(red: 244, green: 235, blue: 130),
                  "0.25": UIColor(red: 233, green: 233, blue: 156),
                  "0.50": UIColor(red: 223, green: 238, blue: 141),
                  "1.00": UIColor(red: 221, green: 236, blue: 210),
                  "3.00": UIColor(red: 202, green: 227, blue: 191),
                  "6.00": UIColor(red: 202, green: 216, blue: 173)
    ]),
]

let aColor = colorMatches[0].scaleColors["6.2"]