There's this cool feature in the UITableViews in Game Center and the search bars they have at their tops. Unlike apps where the search bar is placed in the table header view (so it counts as a stan...

GameCenter has been working fine before release when updating the high scores. Now, it has been over 24 hours and the highscores will not update at all. Instead, it only shows my score in "Today" a...

I've implemented Game Center features like achievements and leaderboards, and now I'm working on the challenges. I was under the impression that I didn't have to add any additional code - if I had ...

I'm still in the very early stages of a game, and I am saving information using a KeyChain wrapper class someone made. I wanted to ask for some advice early on, since I have time to change my appro...

I'm getting the above error when I try to create the first leaderboard for my newest app. Does anyone know how to resolve the error? I do have another app with a leaderboard but surely that won't ...

I want to save game data with GKLocalPlayer and saveGameData method. [localPlayer saveGameData:playerData withName:@"SolarFlares" completionHandler:^(GKSavedGame *savedGame, NSError *error) { if...

I'm trying to implement a gamecenter aware app targeted to iOS 6. To give some info on the environment I'm working on mac os 10.7.5 with XCode version is 4.5.2 and xcode is running iphone and ipad ...

I have recently decided to add achievements to a game that has been on the App Store for years now, and I'm having issues with making them work. I am using the following code to post the achieveme...

iOS7 introduced new GKLocalPlayer method generateIdentityVerificationSignatureWithCompletionHandler(). Does anyone know how to use it for good? I assume there will be some public API at Apple ser...

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 retur...

There are already a couple of questions on this but I followed their steps to solve it and it doesn't seem to work for me. Here's what I have done: 1. I double checked to have the bundle identifier...

I have seen in posts around stack overflow that shows snippets of handling GameCenter authentication. However, none of these solutions address any of the problems that real world use cases cover. N...

This is about GameCenter. Since "the GKLocalPlayerListener protocol inherits the methods from GKChallengeListener, GKInviteEventListener, and GKTurnBasedEventListener. In order to handle multip...

I've been trying to get the new iOS Game Center GKPlayer method, generateIdentityVerificationSignatureWithCompletionHandler, working so we can securely rely on the Game Center credentials for authe...

We're having a problem with sending invites with GKGameCenterViewController. The view controller opens up just fine, but when we try to send an invite to somebody, it immediately fails. Both accoun...

I keep getting this crash report from GA and users... However i cannot reproduce this exception by testing iphone5,5s,6 with both ios7 and ios8. This issue comes nowhere when application did enter ...

How to get score of local player from Leaderboard Game Center? I tried this code, but it returns nothing. Anybody know how to solve it, or is there better way how to get score? - (NSString*) getSc...

As the apple guidelines said; I've implemented the GKLocalPlayerListener protocol in my game center class and add the local player as listener as soon as he's authenticated: func authenticationCh...

I'm setting up Game Center for my OSX game, but it can't authenticate player with the following error (OSX 10.10 Yosemite): I've got the following setings in iTunesConnect: and XCode: I'll a...

I'm thinking of adding a feature to my iOS game to allow players to create their own game levels, share them with other players, rate them, etc. There'd be a public repository of user-created level...

Please forgive my clumsiness, I'm new to Stackoverflow, C#, and Objective C. In a nutshell, I'm trying to do what is answered in this question, but in PHP: How to authenticate the GKLocalPlayer o...

Hi I am trying to add game center to my iphone app. I have done the following steps 1) I have added an app to my itnuesAccount 2) I assigned the Bundle ID as net.myCompany.myGameCenter 3) I am usi...

How can I open a game center leaderboard in tvOS? I've used this code for my iPhone games, 'leaderboardIdentifier' aren't available on tvOS. I've planned to use the same leaderboard on the AppleTV...

I created a game that uses real-time multiplayer programmatically. It was originally targeted to towards IOS 8 devices. Recently after migration to IOS 9, Game Center has caused a lot of prob...

I cannot get GameCenter invite friend to work. The match maker view controller shortly shows the invited player and a little text "Failed" under it. Maybe I picked the wrong time to learn GameCente...