How to archive and unarchive custom objects in Swift? Or how to save custom object to NSUserDefaults in Swift?

Question

I have a class

class Player {

    var name = \"\"

    func encodeWithCoder(encoder: NSCoder) {
        encoder.encodeObject(name)
    }

    func initWith         


        

Answer 1

With codable new ios 11 protocol you can now let your class implements it and archive/unarchive objects of it with JSONEncoder and JSONDecoder

struct Language: Codable {
    var name: String
    var version: Int
}

let swift = Language(name: "Swift", version: 4)
let encoder = JSONEncoder()
if let encoded = try? encoder.encode(swift) {
    // save `encoded` somewhere
}

if let encoded = try? encoder.encode(swift) {
if let json = String(data: encoded, encoding: .utf8) {
    print(json)
}

let decoder = JSONDecoder()
if let decoded = try? decoder.decode(Language.self, from: encoded) {
    print(decoded.name)
}