无法在swift中从字典的JSON数组中获取值

Question

json响应：“result”：{

   "user_images": [
        {
            "id": 113,
            "user_id": "160",
            "image": "1617349564.jpg",
            "image_title": "33"
          
        },
        {
            "id": 112,
            "user_id": "160",
            "image": "1617349541.jpg",
            "image_title": "22"
           
        },
        {
            "id": 111,
            "user_id": "160",
            "image": "1617349528.jpg",
            "image_title": "11"
        },
        ........

代码：使用这段代码，我会得到上面这样的响应，意味着所有user_images数组都来了...但在这里我需要image_title如何获得它…如果我运行循环得到错误..请帮忙

  if let code = ((response.dict?["result"] as? [String : Any])){
      let userImages = code["user_images"] as? [String : Any]

   }

如何从上面的字典数组中获取image_title值

Answer 1

溶胶1

if let code = response.dict?["result"] as? [String : Any]  {
  if let userImages = code["user_images"] as? [[String : Any]] {
      for item in userImages {
         print(item["image_title"])
      } 
   } 
}

溶胶2

if let code = response.dict?["result"] as? [String : Any]  { 
   do { 
       let data = try JSONSerialization.data(withJSONObject: code) 
       let decoder = JSONDecoder() 
       decoder.keyDecodingStrategy = .convertFromSnakeCase 
       let res = try decoder.decode(Result.self, from: data) 
       let titles = res.userImages.map { $0.imageTitle } 
       print(titles) 
   }
   catch {
       print(error)
   } 
}

// MARK: - Result
struct Result: Codable {
    let userImages: [UserImage]
 
} 
// MARK: - UserImage
struct UserImage: Codable {
    let id: Int
    let userId, image, imageTitle: String
}