如何使用属性初始化单例-Swift？

Question

I am trying to create a singleton that gets initialized with properties.. I know you can initialize by default:

class ApiSharedHelper {
    var someValue:String    

    static let sharedInstance : ApiSharedHelper = {
        let instance = ApiSharedHelper()
        return instance
    }()


ApiSharedHelper.sharedInstance...

And I would just call that sharedInstance and it'll call the constructor. How would I call that shared instance where I'm passing a value for that someValue string to initialize a value?

Answer 1

class APIManager {

    class var shared :APIManager {
        struct Singleton {
            static let instance = APIManager()
        }
        return Singleton.instance
    }

    func login(username: String, password: String, success:@escaping (LoginModel?)->()) { ... }

You can call it by :

APIManager.shared.login(username: txtUsername.text ?? "", password: txtPassword.text ?? "") { (response) in
            print(response ?? "")
    }

Answer 2

you can try this

class ApiSharedHelper {
    var someValue:String    
    static let sharedInstance = ApiSharedHelper()
    private init(){
    }
}

ApiSharedHelper.sharedInstance...