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Questions tagged [game-center]

The inner workings and use of Apple's GameCenter API in your apps.

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Import Public Key from GameCenter using PyCrypto on Google App Engine

I'm trying to verify a GameCenter player on a remote server using Apple's documented method: GKLocalPlayer generateIdentityVerificationSignatureWithCompletionHandler: Calling this method on iOS returns, among other things, a link to this file (this…
Shaun Budhram
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Login to Game Center But Return error

I am trying to login with game center with iOS 8 but this error Error is Error Domain=GKErrorDomain Code=15 "The requested operation could not be completed because this application is not recognized by Game Center." UserInfo=0x17446c0c0 …
Muhammad Asif
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(iOS 8)Can I use Real Game Center Account to test an iOS app?

I`m integrating game center into my project. Now is using sandbox account to login. But I want to send my application to other tester. Those tester dint try to plug their devices to macbook before, so cannot enable the sandbox option. So I want to…
ZynGie
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Strange GameKit Bug. GKLocalPlayer is returning the opponent

I'm making a Sprite Kit multiplayer game using game center. I'm using the following code to get the local player. GKLocalPlayer.localPlayer() I use this to get stuff like the player ID and alias like…
Epic Byte
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Game Center - Show a set of leaderboards

I just asked this question for Google Play Services, but I also have a Game Center implementation for iOS. My game has two modes - normal and hard. At the end of a game I would like to be able to show the leaderboards for the current mode instead of…
Barodapride
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iOS8 : running in the background for forever : GameCenter

I know this may seem a duplicate subject but its not (hopefully its not) We have an application that uses GameCenter in the background for backend communication, up until ios8, GameCenter has ran in the background fine. Now I need to find a fix…
Burf2000
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Will moving existing Achievements to a Group make old app version malfunction?

I have an existing app that's already released to the public which has a "single app" game center entry with many achievements. Now i'm adding a new app with which I want the original app to share achievements. So there's a "Move to Group" button…
Yuyo
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Set localPlayer.authenticateHandler method pointer to global method

I dont want to set "localPlayer.authenticateHandler" locally like that as I have ARC off and I think something is going wack in that mode. (Its for Unity3D so ARC must be off). localPlayer.authenticateHandler = ^(UIViewController *viewController,…
zezba9000
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GKLeaderboard in SpriteKit?

How can I use a GKLeaderboard in SpriteKit ? When I try to present a Leaderboard a got this issue. Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIView setShowsFPS:]: unrecognized selector sent to instance…
Steve Boss
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Game Center log-in window never appearing

The problem here is that the player is not getting authenticated and I'm not getting the log-in window for game center so I really need to get this fixed as soon as possible. func authenticateLocalPlayer() { var localPLayer =…
Eduardo Rojas Alva
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Swift syntax for GKMatchmaker.matchForInvite

Does somebody know how to write Game Center invitation handling correctly? I cannot figure out the right syntax for this line: GKMatchmaker.matchForInvite (Invitation:GKInvite!, completionHandler ..... Please help, I am stuck!
Endre Olah
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Translating Objective C call back to Swift

I'm currently trying to translate a tutorial for game center from Objective C into Swift and I've hit roadblock. I've been searching for about an hour and haven't been able to find anything too helpful to help me translate this callback-method: -…
sadfrogger
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iOS Gamecenter - Resubmitting leaderboard scores and earned achievements

For iOS game apps using Gamecenter, is it a best practice to re-submit to Gamecenter leaderboard scores and/or earned achievements that the player earned previously, at the time that the player's save game file is loaded? This could make the…
Jon Schneider
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Players not showing up on live Game Center Leaderboard

I have recently released my app to the store and not all players are showing up on the leaderboard in the game centre app. When I look at the leaderboard scores there is half the number of scores that should be there. When I go to iTunesConnect > My…
datinc
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Calling Game Center Leaderboard from SKScene

Hello I'm trying to call a function to show the GameCenter LeaderBoard from an SKScene but I've been unsuccessful. Here is how I call the function from a SKScene. class Menu: SKScene { func score(sender:UIButton!) { …
Raul Gonzalez
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