Initializer is inaccessable due to 'internal' protection level

Question

I have some protocols

LoginStrategy

public protocol LoginStrategy {     func login(_ viewController: UIViewController)     func getUserInfo(withCompletionHandler completionHandler: @escaping (_ userInfo: [String: Any]?) -> ())     func createLoginButton(_ frame: CGRect, withCompletionHandler completionHandler: @escaping (_ loginButton: UIView) -> ())     func getUserId() -> String } 

and two classes:

LoginProvider

public class LoginProvider {      public let strategy: LoginStrategy      public func login(_ viewController: UIViewController) {         return self.strategy.login(viewController)     }      public func getUserInfo(withCompletionHandler completionHandler: @escaping (_ userInfo: [String: Any]?) -> ()) {         return self.strategy.getUserInfo(withCompletionHandler: completionHandler)     }      public func createLoginButton(_ frame: CGRect, withCompletionHandler completionHandler: @escaping (_ loginButton: UIView) -> ()) {         return self.strategy.createLoginButton(frame, withCompletionHandler: completionHandler)     }      public func getUserId() -> String {         return self.strategy.getUserId()     }      public init(strategy: LoginStrategy) {         self.strategy = strategy     }  } 

FacebookLoginStrategy

import Foundation import FacebookCore import FacebookLogin  public class FacebookLoginStrategy: LoginStrategy {      public var grantedPermissions: Set<Permission>? = nil      public var declinedPermissions: Set<Permission>? = nil      public var userId: String = ""      public func login(_ viewController: UIViewController) {         let loginManager = LoginManager()         let permissions: [ReadPermission] = [.publicProfile, .userFriends, .email]         loginManager.logIn(permissions, viewController: viewController) { loginResult in             switch loginResult {             case .failed(let error):                 print(error)             case .cancelled:                 print("User cancelled login.")             case .success(let grantedPermissions, let declinedPermissions, let accessToken):                 self.userId = accessToken.userId ?? ""                 self.grantedPermissions = grantedPermissions                 self.declinedPermissions = declinedPermissions                 print("Logged in!")             }         }     }      public func getUserId() -> String {         return userId     }      public func getUserInfo(withCompletionHandler completionHandler: @escaping (_ userInfo: [String: Any]?) -> ()) {         let request = GraphRequest(graphPath: "me", parameters: ["fields":"email, name"], accessToken: AccessToken.current, httpMethod: .GET, apiVersion: FacebookCore.GraphAPIVersion.defaultVersion)         request.start { (response, result) in             switch result {             case .success(let value):                 print(value.dictionaryValue)                 completionHandler(value.dictionaryValue)             case .failed(let error):                 print(error)             }         }     }      public func createLoginButton(_ frame: CGRect, withCompletionHandler completionHandler: @escaping (_ loginButton: UIView) -> ()) {         let permissions: [ReadPermission] = [.publicProfile, .userFriends, .email]         let loginButton = LoginButton(readPermissions: permissions)         loginButton.frame = frame         completionHandler(loginButton)     } } 

In my ViewController:

When I use:

let facebookLoginProvider = LoginProvider(strategy: FacebookLoginStrategy()) 

It says:

'FacebookLoginStrategy' is inaccessable due to 'internal' protection level

Answer 1

Just add to your FacebookLoginStrategy:

public init() {} 

As long as you do not implement init() explicitly, it is marked as internal by default. You need to overwrite that permission level to be able to instantiate from outside your framework.