Hello guys, on parsing Json in SwiftUI question:

I parse data from remote Json and give it to output in console. In this step is very good.

How I can "insert" read this data field on my ContentView?.. I'm stuck on this....

Please help! or give me suggest tutorial, where is detailed about this.

Thanks!

I got error

Value of type 'UserResults' has no member 'email'

on Text(ppl?.email ?? "Email Placeholder") string

ContentView file:

import SwiftUI

struct ContentView: View {

    @State private var ppl: UserResults?

    var body: some View {
        VStack {
            Image(systemName: "globe")
                .imageScale(.large)
                .foregroundStyle(.tint)
            Text("Hello, world!")
            Text(ppl?.email ?? "Email Placeholder")
        }
        .onAppear {
            NetworkServiceWithCompletions.shared
                .fetchData { result in
                    switch result {
                    case .success(let usersData):
                        print("Data:\(usersData.results[0].email)")
                    case .failure(let failure):
                        print(failure.localizedDescription)
                    }
              }
        }
        .padding()
    }
}

#Preview {
    ContentView()
}

User file

import Foundation

struct UserResults: Decodable {
    let results: [User]

    struct User: Decodable {
        var gender: String
        var name: Name
        var email: String
        var picture: Picture

        struct Name: Decodable {
            var title: String
            var first: String
            var last: String
        }

        struct Picture: Decodable {
            var large: String

        }

    }

}

NetworkServiceWithCompletions file

import Foundation

class NetworkServiceWithCompletions: ObservableObject {

    static let shared = NetworkServiceWithCompletions(); private init() { }

    private func createURL() -> URL? {
        let tunnel = "https://"
        let server = "randomuser.me"
        let endpoint = "/api"
        let getParams = ""
        let urlStr = tunnel + server + endpoint + getParams

        let url = URL(string: urlStr)
        return url
    }

    func fetchData(completion: @escaping (Result<UserResults, Error>) -> ()) {
        guard let url = createURL() else {
            completion(.failure(NetworkingError.badUrl))
            return
        }

            URLSession.shared.dataTask(with: url) { data, response, error in
                guard let data else {
                    if let error {
                        completion(.failure(error))
                    }
                    return
                    }

                 let decoder = JSONDecoder()
                decoder.keyDecodingStrategy = .convertFromSnakeCase
                do {
                    let usersData = try decoder.decode(UserResults.self, from: data)
                    completion(.success(usersData))
                } catch {
                    completion(.failure(NetworkingError.invalidData))
                }

                }.resume()
            }
        }

    enum NetworkingError: Error {
        case badUrl, badRewuest, badResponse, invalidData
    }

I got error

Value of type 'UserResults' has no member 'email'

on Text(ppl?.email ?? "Email Placeholder") string

Because email is ppl>[results]>email. Try

Text(ppl?.results[0].email ?? "Email Placeholder")

Ok error is gone, but only "Email Placeholder" is showing... not real email string...

That sound like ppl? is still nil

I know about nil, but can I fix this?

Where is my mistake?..

ppl is nil because it is not set anywhere

you can set it inside the case .success:
ppl = usersData