How do I parse JSON array in Swift when there is no key

Question

I am using the following code in Swift Playground

import Foundation

struct PlayerInfo: Decodable{
    var PlayerID: String = ""
    var FirstName: String = ""
    var LastName: String = ""
}

var rosterRequest = PlayerRequest()

rosterRequest.loadPlayers()

class PlayerRequest{
    var players: [PlayerInfo] = []
    
    func loadPlayers(){

        guard let url = URL(string: "https://api.sportsdata.io/v3/nba/scores/json/Players?key=<key>") else {
            print("Invalid URL")
            return
        }
        
        let request = URLRequest(url: url)
        
        URLSession.shared.dataTask(with: request) { data, response, error in
            if let mydata = data {
                print(mydata)
                
                if let players = try? JSONDecoder().decode([PlayerInfo].self, from: mydata){

                    DispatchQueue.main.async {
                        for player in players{
                            print(player.LastName)
                            }
                        }
                        return
                }
                print("Fetch failed: \(error?.localizedDescription ?? "Unknown error")")
            }
        }.resume()
    }
}

I know I get the data because it prints the length but when it come to parsing the data it fails.

Any help would be greatly appreciated.

When I run the request through Rested I get:

[
    {
        "PlayerID": 20000441,
        "SportsDataID": "",
        "Status": "Active",
       ...
    },
    {
        "PlayerID": 20000442,
        "SportsDataID": "",
        "Status": "Active",
        ...
    }
...
]

Your JSON doesn't seem to have FirstName and LastName keys? Or have you omitted them? Anyway, don't print the localizedDescription or the error. print(error) if you actually want to know what went wrong. — Sweeper
– Sweeper, Commented Nov 6, 2020 at 0:45

user2771118 · Accepted Answer · 2020-11-06 01:32:27Z

1

I figured it out. PlayerID is an Int and I had it defined as a String

answered Nov 6, 2020 at 1:32

user2771118

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