Authenticating the local player - Game Center - iOS6

Question

I'm completely new to development in Game Center. I have watched the videos in WWDC and looked at the developer website. They suggest I enter code like this for iOS 6:

- (void) authenticateLocalPlayer
{
    GKLocalPlayer *localPlayer = [GKLocalPlayer localPlayer];
    localPlayer.authenticateHandler = ^(UIViewController *viewController, NSError *error){
         if (viewController != nil)
         {
             [self showAuthenticationDialogWhenReasonable: viewController
         }
         else if (localPlayer.isAuthenticated)
         {
             [self authenticatedPlayer: localPlayer];
         }
         else
         {
             [self disableGameCenter];
         }
     }];
}

I have copied this into the app delegate.m file, however it does not like it, showing errors like expecting a ] after [self showAuthenticationDialogWhenReasonable: viewController } amongst others.

Can anyone please tell me how to authenticate the user for game center in iOS 6?

Answer 1

To get an introduction to GameKit, there are samples available from apple, for example: https://developer.apple.com/library/ios/#samplecode/GKLeaderboards/Introduction/Intro.html.

In your code you are missing the closing "]", but of course you need more than just this function to connect to the gameCenter. Best start with one of the samples.