无法将'__NSCFNumber'（0x10e59f3c0）类型的值转换为'NSString'（0x10dba7ad8）swift 3

Question

我一直在试图弄清楚这一天，现在几天...这是我的原始代码：

if let ratingDic = dictionary["rating"] as? [String: Any], 
     let ratingId = ratingDic["id"] { 
     searchResult.ratingID = ratingId as! String 
    } 

这里是我的API：

"amount" = "50.00"; 
"rating" =  { 
    "name" = "Platinum"; 
    "id" = 5 

我敢肯定我需要使用 “valueForKey”，所以这里是我更新的代码：

if let ratingDic = dictionary["rating"] as? [String: Any], 
     //let ratingId = ratingDic["id"] { 
     let ratingId = [ratingDic.valueForKey("id")!] { 
     searchResult.ratingID = ratingId as! Number 
    } 

如何曾经，现在我收到了“类型字符串值：任何没有成员‘valueForKey’

Answer 1

没关系，我几乎忘了实际变量更改为‘双师型’或数字

var ratingID = 0.0 

，而不是

var ratingID = "" 

和现在的代码读取

if let ratingDic = dictionary["rating"] as? [String: Any], 
     let ratingId = ratingDic["id"] { 
     searchResult.ratingID = ratingId as! Double 
    }