I'm trying to save game's data to iCloud via next code: GKLocalPlayer *localPlayer = [GKLocalPlayer localPlayer]; [localPlayer saveGameData:[NSData dataWithBytes:rawData->data() length:rawData-...

I am making a multiplayer game for iOS and I read the material in Apple Developer Center, specifically this one. Here is my code for custom matchmaking, which is pretty straightforward: - (void)fi...

Using both the frameworks, we can send messages to session.peers using Bluetooth? I am using multipeerconnectivity framework to send messages to my peers, but it usually has a delay of 1.4 sec bet...

According to the Apple docs we should do something like this to handle GC authentication: - (void) authenticateLocalUser { GKLocalPlayer *localPlayer = [GKLocalPlayer localPlayer]; if(localPlay...

I'm implementing the StoreKit in-app app purchase interface and though it appears that the SKStoreProductViewController handles landscape on iPad, it does not appear to do so for my app on iPhone (...

(I am not interested in pure theory, but as a practical near or mid-term possibility, say within 12-24 months.) As a developer familiar with (but not specializing in) two major smartphone platform...

Do you guys know any tutorial or code sample that covers using Game Center on iOS 7 for creating live matches? All Apple sample codes are from 2011 (!) and their documentation is incomplete and va...

I am working on a turn-based GameCenter game. A GKTurnBasedMatch is created with a GKMatchRequest, with minPlayers and maxPlayers set to 2. I get an NSInvalidArgumentException while trying to end t...

I would like to setup a client-server architecture for streaming data between multiple iPhones. For instance, the 'server' iPhone hosts a master list of animals. An arbitrary number of client iPhon...

Here's my situation: 1) The user opens my application for the first time. I immediately call authenticateLocalUser to try and log them into Game Center. The popup with the Login, Create Account, a...

Thanks to the updates to GameKit API in iOS 6, I am finally able to implement my turn-based board game the way it should be, complete with turn timeouts and better programmatic creation of matches....

According to Apple's Game Center programming guide, this code sets up an authentication handler. If you run this at the beginning of your game, the first time you run it, it will prompt the user to...

I want there to be a "Quickmatch" mode in my turn-based game, where the player gets automatically matched with the first player to become available. I'm using my own custom UI. My code so far looks...

Alright, this involves a lot of network coding from this part of a multiplayer tutorial. Basically, I'm trying to implement a multiplayer game using GameKit as per the tutorial linked above. I put...

i have this playlist of the songs in my app.I want to play a song from this playlist on anther device (iphone) using bluetooth. This is what i have done so for #import "BrowseStationsViewControl...

I'm creating a real time matches game and I'm confused as to how to deal with game invitations? For instance, a player on one device can invite his friends to a match and then an invitation banner ...

I have a problem with the GameKit framework. In my app, I want to send a text or an image. Now, when I send an image from UIImagePicker, it works well. When I send text, it does not show the same U...

I'm working with GameKit.framework and I'm trying to create a reliable communication between two iPhones. I'm sending packages with the GKMatchSendDataReliable mode. The documentation says: GK...

In a game I am developing using GameCenter, I want to handle the following scenario: the user starts up the game. He is shown the system alert that prompts him to log on GameCenter. He ignores it...

I am having an issue with getting a GKSession to work. Below is my code that is executed when a specific button is pressed. GKSession *session; if (connectButtonHasBeenPressed == false) { NSLog(@...

I'm using GKSession (part of Game Kit) to connect multiple iOS devices together (over bluetooth and/or wifi), send data, etc which all works fine and I'm happy with it. I was thinking though, it w...

I am doing some experimentation to try to learn about GameKit and I made a simple game and an interface which lists my player's matches. I am trying to add the ability to remove games using the rem...

I am using Game Center in my game for iPhone in IOS 6. I have a tableview with a list of GameCenter´s friends. When I click a friend name, this friend recieve anotificatión (Game Center Notificatio...

I am trying to authenticate a GKLocalPlayer with Game Center. However, the code supplied by Apple - (void) authenticateLocalPlayer { [[GKLocalPlayer localPlayer] authenticateWithCompletionHandler...

I'm trying to implement a real-time multiplayer game with a custom UI (no GKMatchMakerViewController). I'm using startBrowsingForNearbyPlayersWithReachableHandler: ^(NSString *playerID, BOOL reacha...