- (void) authenticateLocalPlayer
{
    [[GKLocalPlayer localPlayer] authenticateWithCompletionHandler:^(NSError *error) {
         if (error == nil)
         {
              // Insert code here to handle a successful authentication.
              NSLog(@"Logged in.");
         }
         else
         {
             // Your application can process the error parameter to report the error to the player.
             NSLog(@"%@",[error description]);
         }
     }];
}

似乎没有为我做的伎俩.我总是收到警告“无法连接到Game Center服务器”.选择“重试”或“取消”.两个NSLog语句都没有被执行,所以我猜到甚至没有触发completionHandler.

如果我按重试,我会收到以下错误：

Error Domain=GKErrorDomain Code=7 "The requested operation could not be completed because local player is already authenticating." UserInfo=0x8915f80 {NSLocalizedDescription=The requested operation could not be completed because local player is already authenticating.}

任何人都知道出了什么问题？