Question

目前我们有以这种格式返回的json值

 "CSS_RGB__c": "rgb(190,102,123)",

我试图将这些值吐入单独的，r，g，b值（例如r = 190，g = 102，b = 123）

以前这有效：

if let raw = dictionary["CSS_RGB__c"] as? NSString {
    let filtered = raw.substring(from: 4).trimmingCharacters(in: CharacterSet(charactersIn: ")"))
    var values = filtered.components(separatedBy: ",")
    if values.count == 3 {
        self["r"] = NSString(string: values[0]).floatValue as NSNumber?
        self["g"] = NSString(string: values[1]).floatValue as NSNumber?
        self["b"] = NSString(string: values[2]).floatValue as NSNumber?
    }
}

但是以新方式swift 4解析json我不完全确定如何分割这些值：

struct Family: Codable {
 let cssRGBC: String

  enum CodingKeys: String, CodingKey {
   case cssRGBC = "CSS_RGB__c"
}
}

Answer 1

您可以使用正则表达式查找两个字符串之间的字符串，映射其范围以提取结果，使用components(separatedBy: ",")获取rgb组件并从字符串中修剪新的整数（如果存在）：< / p>

let raw = "rgb(190,102,123)"
let regexPattern = "(?<=rgb\\()(.*)(?=\\))"
if let rgb = raw.range(of: regexPattern, options: .regularExpression)
    .map({String(raw[$0])})?
    .components(separatedBy: ",")
    .flatMap({Int($0.trimmingCharacters(in: .whitespaces))}){
    print(rgb)  // "[190, 102, 123]\n"
}

返回json数据拆分为不同的值Swift 4

1 个答案: