CODEWITHSUNDEEP
jsonswift3
S.Shakir
S.Shakir

Reputation: 1

Cast from '(key: Any, value: Any)' to unrelated type '[String : Any]' always fails

I am working on a project and have reached a stage where I want to display data from a web service in a table view. My json data is in dictionary format and I am taking loop for fetching the data from dictionary by using key but it's getting the warning. So, please help me for this type of warning.

My loop is:-

let fetchedData = try JSONSerialization.jsonObject(with: data!, options: []) as! NSDictionary

 for eachFetchedRestaurant in fetchedData {

     let eachRestaurant = eachFetchedRestaurant as! [String : Any]
     let restaurantName = eachRestaurant["restName"] as! String
     let restaurantImage = eachRestaurant["restaurant_image"] as! String

     self.fetchedRestaurant.append(Restaurants(restaurantName: restaurantName, restaurantImage: restaurantImage))
     }
     print(self.fetchedRestaurant)

Getting warning on this line:-

let eachRestaurant = eachFetchedRestaurant as! [String : Any]

 Cast from '(key: Any, value: Any)' to unrelated type '[String : Any]' always fails

Thanks in advance for helping!!!

Upvotes: 0

Views: 2053

Answers (2)

Ankit Thakur
Ankit Thakur

Reputation: 4749

Since JSON response is array of (key, value) format, so your fetch data should be of [[String:Any]] format. Here is the updated code.

let fetchedData = try JSONSerialization.jsonObject(with: data!, options: []) as! [[String:Any]]

 for (key,eachFetchedRestaurant) in fetchedData {

     let eachRestaurant = eachFetchedRestaurant as! [String : String]
     let restaurantName = eachRestaurant["restName"] as! String
     let restaurantImage = eachRestaurant["restaurant_image"] as! String

     self.fetchedRestaurant.append(Restaurants(restaurantName: restaurantName, restaurantImage: restaurantImage))
  }
  print(self.fetchedRestaurant)

Upvotes: 1

vadian
vadian

Reputation: 285069

First of all don't use NSDictionary and NSArray in Swift, use native types.

You are applying array related enumeration API to a dictionary. The dictionary related API is 

for (key, eachFetchedRestaurant) in fetchedData

You've got two options:

  1. fetchedData is indeed expected to be dictionary then cast

    let fetchedData = try JSONSerialization.jsonObject(with: data!) as! [String:Any]

    and use the mentioned enumeration API

  2. (the more likely one) fetchedData is expected to be an array then you have to cast

    let fetchedData = try JSONSerialization.jsonObject(with: data!) as! [[String:Any]]

Upvotes: 0

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