从字典中提取字典swift

Question

我在swift中转换目标c代码。

我从服务器获取数据，该服务器在字典中有字典。 我正在获取键值字符串，但无法获取字典。

示例数据：

data =   { 
      caption = hello; 
      image =    { 
       a = "https://www.google.com/1024x1024"; 
       b = "https://www.google.com/640x640"; 
       c = "https://www.google.com/480x480"; 
       d = "https://www.google.com/"; 

      }; 
     }; 

我可以得到说明

let dataDict = (mainDict[data] as? Dictionary<String,AnyObject>)! 

Obj.caption=String(dataDict["caption"]!) //getting hello 

Obj.imageDictionary = (dataDict["image"] as? Dictionary<String,String>)! //getting 0 key value pairs 

初始化imageDictionary作为

var imageDictionary = Dictionary<String, String>() 

请建议如何让图像词典，我想这本字典存储在imageDictionary对象中。

任何建议将不胜感激！ 在此先感谢！

Answer 1

试试这个：

let data : [String : Any] = ["caption" : "hello", 
          "image" :["a" : "https://www.google.com/1024x1024", 
         "b" : "https://www.google.com/640x640", 
         "c" : "https://www.google.com/480x480", 
         "d" : "https://www.google.com/", 
    ] 
] 

let caption = data["caption"] as! String 
let imageDictionary = data["image"] as! [String : String] 

在imageDictionary，我得到：

["b": "https://www.google.com/640x640", "a": "https://www.google.com/1024x1024", "d": "https://www.google.com/", "c": "https://www.google.com/480x480"] 

截图：