game-center

I'm trying to implement Game Center in my Swift game. I have a menu view controller, where the user can press a "SCORES" button, which should take them to the Game Center view controller. This is the code that runs in the menu vc, when the button is pressed: var gcViewController: GKGameCenterViewController = GKGameCenterViewController() gcViewController.gameCenterDelegate = self gcViewController.viewState = GKGameCenterViewControllerState.Leaderboards gcViewController.leaderboardIdentifier = "VHS" self.presentViewController(gcViewController, animated: true, completion: nil) I have code in the

I'm building a game using Game Center's turn based matches. I want to display a list of all the available matches. I've tried using loadMatchesWithCompletionHandler() , but the array of games returns as nil , and the error also returns as nil . There are some ongoing matches. This is what I have so far: func authenticateLocalUser() { if !gameCenterAvailable { return } let player = GKLocalPlayer.localPlayer() if player.authenticated == false { player.authenticateHandler = {(viewController, error) -> Void in if viewController != nil && self.presentingViewController != nil { self

I'm trying to call the authentication method of game center, however no authentication screen comes up and the callback return with an error : "the requested operation has been canceled". The code : [[GKLocalPlayer localPlayer] authenticateWithCompletionHandler:^(NSError *error) { NSDictionary *userInfo = nil; if (error == nil) { NSLog(@"Game Center successfully authenticated"); } else { userInfo = [NSDictionary dictionaryWithObject:error forKey:@"NSError"]; } [[NSNotificationCenter defaultCenter] postNotificationName:Notification object:self userInfo:userInfo]; }]; Any idea what can cause

I have a website. I was wondering if Apple exposed its Game Center data via a web api. If would be cool if I could show users their Game Center info right in my website! Let me know folks. I think it may still be under NDA as I had to log on to look at the game center docs... I did find a non apple site with a getting started pdf . it contains an interesting passage: The data maintained by the Game Center service should only be used to provide the services and functionality necessary for your application, and may not be transferred or copied to other services. For example, you may not download

I'm trying to implement invitations with Game Center and there's one thing that i don't understand. Ok, i've sent an invitation from one device to another. Then i have an UIAlertView on receiver which asks me i would like to accept or decline the invitation. when i accept it it is handled like this: [GKMatchmaker sharedMatchmaker].inviteHandler = ^(GKInvite *acceptedInvite, NSArray *playersToInvite) { // Insert application-specific code here to clean up any games in progress. if (acceptedInvite) { GKMatchmakerViewController *mmvc = [[[GKMatchmakerViewController alloc] initWithInvite