取消存档AuthState时，App Auth崩溃

如何解决取消存档AuthState时，App Auth崩溃

我正在iOS应用中实现App Auth库，并尝试在归档Auth State时清除一些警告。

'unarchiveObject（with :)'在iOS 12.0中已被弃用：改用+ unarchivedobjectOfClass：fromData：error：

和

'archivedData（withRootObject :)'在iOS 12.0中已被弃用：使用+ archivedDataWithRootObject：requiringSecureCoding：error：代替

以下内容可以正常工作，但带有警告：

    private func loadAuthState() {
        guard let data = UserDefaults.standard.object(forKey: kAppAuthAuthStateKey) as? Data else {
            return
        }

        if let authState = NSKeyedUnarchiver.unarchiveObject(with: data) as? OIDAuthState {
            print("AuthState loaded. Access token: \(authState.lastTokenResponse?.accesstoken ?? "DEFAULT_TOKEN")")
            self.authState = authState
            self.signedIn.update(with: .signedIn)
        }
    }

    private func saveAuthState() {
        if let authState = self.authState {
            let data = NSKeyedArchiver.archivedData(withRootObject: authState)
            
            UserDefaults.standard.set(data,forKey: kAppAuthAuthStateKey)
            UserDefaults.standard.synchronize()
            
        }
    }

更改为以下内容后，我在未归档（由于未捕获的异常'NSInternalInconsistencyException'而终止的应用程序上崩溃，原因：'不支持response_type“（null）”。AppAuth仅支持“ code”或“代码id_token”“ response_type”。）：

    private func loadAuthState() {
        guard let data = UserDefaults.standard.object(forKey: kAppAuthAuthStateKey) as? Data else {
            return
        }

        if let authState = try? NSKeyedUnarchiver.unarchivedobject(ofClass: OIDAuthState.self,from: data) {
            print("AuthState loaded. Access token: \(authState.lastTokenResponse?.accesstoken ?? "DEFAULT_TOKEN")")
            self.authState = authState
            self.signedIn.update(with: .signedIn)
        }
    }

    private func saveAuthState() {
        if let authState = self.authState {
            guard let data = try? NSKeyedArchiver.archivedData(withRootObject: authState,requiringSecureCoding: false) else {
                return
            }
            
            UserDefaults.standard.set(data,forKey: kAppAuthAuthStateKey)
            UserDefaults.standard.synchronize()
            
        }
    }