ios - 有什么方法可以控制何时使用 Game Center 进行身份验证？

Question

以下代码在 applicationDidFinishLaunching: 时被调用一次；但是，每次我的应用程序再次重新进入前台时它都会运行。

[localPlayer authenticateWithCompletionHandler:^(NSError *error) {
    if (localPlayer.isAuthenticated)
    {
        // Some implementation
    }
}];

根据Game Kit Programming Guide，这是有道理的:

... it also retains your completion handler for later use. Each time your application is moved from the background to the foreground, Game Kit automatically authenticates the local player again on your behalf and calls your completion handler to provide updated information about the state of the authenticated player.

有什么方法可以延迟此身份验证，直到真正需要 Game Center 为止？我问的原因是我想避免显示“欢迎回来，userX!”每次将应用程序带到前台时都会出现横幅。

Answer 1

不，你不能，至少不能使用公共(public) API。