ios - 游戏套件认证

Question

在游戏工具包指南中指出游戏应该

If there is not an authenticated user on the device when your game calls this method, Game Kit displays a user interface that allows the player to sign in with their credentials (or to create a new account if he or she has never used Game Center). Your game should pause other activities that require user interaction (such as a real time game loop) before attempting to authenticate the local player. (source)

我的游戏是否应该一直没有响应，直到游戏套件完成它的工作并调用 block ？当这样的 View 显示和隐藏时，有什么方法可以让我收到通知，这样我的应用程序在经过身份验证之前什么都不做？

Answer 1

我的游戏完全基于 UIKit，我没有做任何特别的事情。