Parse JSON Result To UILabel in Swift - ios

Question

I'm really new into swift & currently learning API by doing a project that shows list of games from rawg.io referring to the website's doc. I created GameFeed.swift & GameDetail.swift to pull name, release date, and rating from it and working fine in my console.
GameFeed.swift :
struct GameFeed: Codable {
let results:[GameDetail]
}
GameDetail.swift :
struct GameDetail: Codable {
let name:String
let released:String
let rating:Double
}
Now i'm trying to put the results to a simple UIlabel like gameName.text, gameReleased.text & gameRating.text from ViewController.swift so it will be show in Main.Storyboard
i did research on google about how to show it to these UIlabel by using DispatchQueue.main.async but when i'm declaring it, it receiving error :
Value of type 'GameFeed' has no member 'name'
same error messages also happened to released & rating. This is my ViewController.Swift :
class ViewController: UIViewController {
#IBOutlet weak var gameName: UILabel!
#IBOutlet weak var gameReleased: UILabel!
#IBOutlet weak var gameRating: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
// Defining API Site
let urlString = "https://api.rawg.io/api/games"
let url = URL(string: urlString)
guard url != nil else {
return
}
// Calling API
let session = URLSession.shared
let dataTask = session.dataTask(with: url!){
(data, response, error) in
if error == nil && data != nil {
let decoder = JSONDecoder()
do {
let gameFeed = try decoder.decode(GameFeed.self, from: data!)
print(gameFeed)
DispatchQueue.main.async {
self.gameName.text = gameFeed.name
self.gameReleased.text = gameFeed.released
self.gameRating.text = gameFeed.rating
}
}
catch {
print("Error Parsing JSON")
}
}
}
dataTask.resume()
}
}
What should i do to make it possible to parse the data to labels?

Answer 1

The GameFeed contains an Array of GameDetails. But you are trying to set a single GameDetail on those labels. You should first pull out a single GameDetail from that array, then assign it in a way you like.
DispatchQueue.main.async {
let gameDetail = gameFeed.results.first // <- This will return the first one
self.gameName.text = gameDetail?.name
self.gameReleased.text = gameDetail?.released
self.gameRating.text = gameDetail?.rating
}