How do I use UserDefaults with SwiftUI?

Question

struct ContentView: View {
@State var settingsConfiguration: Settings
    struct Settings {
        var passwordLength: Dou         


        

Answer 1

If you are persisting a one-off struct such that a property wrapper is overkill, you can encode it as JSON. When decoding, use an empty Data instance for the no-data case.

final class UserData: ObservableObject {
    @Published var profile: Profile? = try? JSONDecoder().decode(Profile.self, from: UserDefaults.standard.data(forKey: "profile") ?? Data()) {
        didSet { UserDefaults.standard.set(try? JSONEncoder().encode(profile), forKey: "profile") }
    }
}