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POCant receive game center invitations
 

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  1. POCant receive game center invitations
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    <p>I am trying to develop a realtime multiplayer game for IOS by using cocos2d by using the tutorial on <a href="http://www.raywenderlich.com/3325/how-to-make-a-simple-multiplayer-game-with-game-center-tutorial-part-22" rel="nofollow">http://www.raywenderlich.com/3325/how-to-make-a-simple-multiplayer-game-with-game-center-tutorial-part-22</a></p> <p>Everything works fine including auto matching with a random player but inviting a friend doesn't work because other device cannot receive an invitation.</p> <p>When I clicked on invite friends button and then selected a friend by using the standard game center interface, it says waiting (forever) and nothing happens. My friend cannot receive an invitation from game center (no notifications). </p> <p>I can invite a friend by using nearby friends functionality (when this functionality is enabled on both devices) but no invitation notification when nearby friends is disabled.</p> <p>I spent hours and hours for searching on Google, found similar cases but no solution.</p> <p><strong>Some early feedback about possible answers:</strong></p> <ul> <li>I use two devices (one iPhone and one iPad), no simulator</li> <li>All settings on iTunes connect are fine including multiplayer settings</li> <li>I validated that both devices are connected to sandbox by using different test accounts</li> <li>I've already checked the notification settings for Game center on both devices</li> <li>I've already checked all proxy/firewall issues and tried on both WiFi and Cellular for both devices</li> <li>Game invitations are enabled for both of the devices/accounts</li> <li>I've already checked the bundle IDs, app version IDs, etc...</li> <li>Both of the devices are IOS 6.x and App target version os IOS 5.0</li> <li>I have no other issues about game center (leaderboards, random matchmaking, etc... all fine)</li> <li>I call the inviteHandler method as soon after I authenticated a user as possible as mentioned in Apple documentation.</li> </ul> <p><strong>Here is my Game center helper class Header file:</strong></p> <pre><code>#import &lt;Foundation/Foundation.h&gt; #import &lt;GameKit/GameKit.h&gt; @protocol GCHelperDelegate - (void)matchStarted; - (void)matchEnded; - (void)match:(GKMatch *)match didReceiveData:(NSData *)data fromPlayer:(NSString *)playerID; - (void)inviteReceived; @end @interface GCHelper : NSObject &lt;GKMatchmakerViewControllerDelegate, GKMatchDelegate&gt;{ BOOL gameCenterAvailable; BOOL userAuthenticated; UIViewController *presentingViewController; GKMatch *match; BOOL matchStarted; id &lt;GCHelperDelegate&gt; delegate; NSMutableDictionary *playersDict; GKInvite *pendingInvite; NSArray *pendingPlayersToInvite; NSMutableArray *unsentScores; } @property (retain) GKInvite *pendingInvite; @property (retain) NSArray *pendingPlayersToInvite; @property (assign, readonly) BOOL gameCenterAvailable; @property (retain) NSMutableDictionary *playersDict; @property (retain) UIViewController *presentingViewController; @property (retain) GKMatch *match; @property (assign) id &lt;GCHelperDelegate&gt; delegate; - (void)findMatchWithMinPlayers:(int)minPlayers maxPlayers:(int)maxPlayers viewController:(UIViewController *)viewController delegate:(id&lt;GCHelperDelegate&gt;)theDelegate; - (BOOL) reportAchievementIdentifier: (NSString*) identifier percentComplete: (float) percent; + (GCHelper *)sharedInstance; - (void)authenticateLocalUser; @end </code></pre> <p><strong>And here is the implementation of the game center helper class</strong></p> <pre><code>#import "GCHelper.h" @implementation GCHelper @synthesize gameCenterAvailable; @synthesize presentingViewController; @synthesize match; @synthesize delegate; @synthesize playersDict; @synthesize pendingInvite; @synthesize pendingPlayersToInvite; #pragma mark Initialization static GCHelper *sharedHelper = nil; + (GCHelper *) sharedInstance { if (!sharedHelper) { sharedHelper = [[GCHelper alloc] init]; } return sharedHelper; } - (BOOL)isGameCenterAvailable { // check for presence of GKLocalPlayer API Class gcClass = (NSClassFromString(@"GKLocalPlayer")); // check if the device is running iOS 4.1 or later NSString *reqSysVer = @"4.1"; NSString *currSysVer = [[UIDevice currentDevice] systemVersion]; BOOL osVersionSupported = ([currSysVer compare:reqSysVer options:NSNumericSearch] != NSOrderedAscending); return (gcClass &amp;&amp; osVersionSupported); } - (id)init { if ((self = [super init])) { gameCenterAvailable = [self isGameCenterAvailable]; if (gameCenterAvailable) { NSNotificationCenter *nc = [NSNotificationCenter defaultCenter]; [nc addObserver:self selector:@selector(authenticationChanged) name:GKPlayerAuthenticationDidChangeNotificationName object:nil]; } } return self; } - (void)authenticationChanged { if ([GKLocalPlayer localPlayer].isAuthenticated &amp;&amp; !userAuthenticated) { NSLog(@"Authentication changed: player authenticated."); userAuthenticated = TRUE; [GKMatchmaker sharedMatchmaker].inviteHandler = ^(GKInvite *acceptedInvite, NSArray *playersToInvite) { NSLog(@"Received invite"); self.pendingInvite = acceptedInvite; self.pendingPlayersToInvite = playersToInvite; [delegate inviteReceived]; }; } else if (![GKLocalPlayer localPlayer].isAuthenticated &amp;&amp; userAuthenticated) { NSLog(@"Authentication changed: player not authenticated"); userAuthenticated = FALSE; } } - (void)lookupPlayers { NSLog(@"Looking up %d players...", match.playerIDs.count); [GKPlayer loadPlayersForIdentifiers:match.playerIDs withCompletionHandler:^(NSArray *players, NSError *error) { if (error != nil) { NSLog(@"Error retrieving player info: %@", error.localizedDescription); matchStarted = NO; [delegate matchEnded]; } else { // Populate players dict self.playersDict = [NSMutableDictionary dictionaryWithCapacity:players.count]; for (GKPlayer *player in players) { NSLog(@"Found player: %@", player.alias); [playersDict setObject:player forKey:player.playerID]; } // Notify delegate match can begin matchStarted = YES; [delegate matchStarted]; } }]; } #pragma mark User functions - (void)authenticateLocalUser { if (!gameCenterAvailable) return; NSLog(@"Authenticating local user..."); if ([GKLocalPlayer localPlayer].authenticated == NO) { [[GKLocalPlayer localPlayer] authenticateWithCompletionHandler:nil]; } else { NSLog(@"Already authenticated!"); } } - (void)findMatchWithMinPlayers:(int)minPlayers maxPlayers:(int)maxPlayers viewController:(UIViewController *)viewController delegate:(id&lt;GCHelperDelegate&gt;)theDelegate { if (!gameCenterAvailable) return; matchStarted = NO; self.match = nil; self.presentingViewController = viewController; delegate = theDelegate; if (pendingInvite != nil) { [presentingViewController dismissModalViewControllerAnimated:NO]; GKMatchmakerViewController *mmvc = [[[GKMatchmakerViewController alloc] initWithInvite:pendingInvite] autorelease]; mmvc.matchmakerDelegate = self; [presentingViewController presentModalViewController:mmvc animated:YES]; self.pendingInvite = nil; self.pendingPlayersToInvite = nil; } else { [presentingViewController dismissModalViewControllerAnimated:NO]; GKMatchRequest *request = [[[GKMatchRequest alloc] init] autorelease]; request.minPlayers = minPlayers; request.maxPlayers = maxPlayers; request.playersToInvite = pendingPlayersToInvite; GKMatchmakerViewController *mmvc = [[[GKMatchmakerViewController alloc] initWithMatchRequest:request] autorelease]; mmvc.matchmakerDelegate = self; [presentingViewController presentModalViewController:mmvc animated:YES]; self.pendingInvite = nil; self.pendingPlayersToInvite = nil; } } #pragma mark GKMatchmakerViewControllerDelegate // The user has cancelled matchmaking - (void)matchmakerViewControllerWasCancelled:(GKMatchmakerViewController *)viewController { [presentingViewController dismissModalViewControllerAnimated:YES]; } // Matchmaking has failed with an error - (void)matchmakerViewController:(GKMatchmakerViewController *)viewController didFailWithError:(NSError *)error { [presentingViewController dismissModalViewControllerAnimated:YES]; NSLog(@"Error finding match: %@", error.localizedDescription); } // A peer-to-peer match has been found, the game should start - (void)matchmakerViewController:(GKMatchmakerViewController *)viewController didFindMatch:(GKMatch *)theMatch { [presentingViewController dismissModalViewControllerAnimated:YES]; self.match = theMatch; match.delegate = self; if (!matchStarted &amp;&amp; match.expectedPlayerCount == 0) { NSLog(@"Ready to start match!"); [self lookupPlayers]; } } #pragma mark GKMatchDelegate // The match received data sent from the player. - (void)match:(GKMatch *)theMatch didReceiveData:(NSData *)data fromPlayer:(NSString *)playerID { if (match != theMatch) return; [delegate match:theMatch didReceiveData:data fromPlayer:playerID]; } // The player state changed (eg. connected or disconnected) - (void)match:(GKMatch *)theMatch player:(NSString *)playerID didChangeState:(GKPlayerConnectionState)state { if (match != theMatch) return; switch (state) { case GKPlayerStateConnected: // handle a new player connection. NSLog(@"Player connected!"); if (!matchStarted &amp;&amp; theMatch.expectedPlayerCount == 0) { NSLog(@"Ready to start match!"); [self lookupPlayers]; } break; case GKPlayerStateDisconnected: // a player just disconnected. NSLog(@"Player disconnected!"); matchStarted = NO; [delegate matchEnded]; break; } } // The match was unable to connect with the player due to an error. - (void)match:(GKMatch *)theMatch connectionWithPlayerFailed:(NSString *)playerID withError:(NSError *)error { if (match != theMatch) return; NSLog(@"Failed to connect to player with error: %@", error.localizedDescription); matchStarted = NO; [delegate matchEnded]; } // The match was unable to be established with any players due to an error. - (void)match:(GKMatch *)theMatch didFailWithError:(NSError *)error { if (match != theMatch) return; NSLog(@"Match failed with error: %@", error.localizedDescription); matchStarted = NO; [delegate matchEnded]; } - (void)reportScore:(int64_t)score forCategory:(NSString *)category { // Only execute if OS supports Game Center &amp; player is logged in if ([self isGameCenterAvailable] &amp;&amp; [GKLocalPlayer localPlayer].authenticated == YES) { // Create score object GKScore *scoreReporter = [[[GKScore alloc] initWithCategory:category] autorelease]; // Set the score value scoreReporter.value = score; // Try to send [scoreReporter reportScoreWithCompletionHandler:^(NSError *error) { if (error != nil) { // Handle reporting error here by adding object to a serializable array, to be sent again later [unsentScores addObject:scoreReporter]; } }]; } } - (BOOL) reportAchievementIdentifier: (NSString*) identifier percentComplete: (float) percent { if ([self isGameCenterAvailable] &amp;&amp; [GKLocalPlayer localPlayer].authenticated == YES) { GKAchievement *achievement = [[[GKAchievement alloc] initWithIdentifier: identifier] autorelease]; if (achievement) { achievement.percentComplete = percent; [achievement reportAchievementWithCompletionHandler:^(NSError *error) { if (error != nil) { // Retain the achievement object and try again later (not shown). } }]; } return YES; } return NO; } @end </code></pre> <p><strong>And Finally this is how I call the game center from my game layer (I tried two different options but none of them worked)</strong></p> <p><em>Option 1</em></p> <pre><code>[[GCHelper sharedInstance] findMatchWithMinPlayers:2 maxPlayers:2 viewController: [[[UIApplication sharedApplication] keyWindow] rootViewController] delegate: self]; </code></pre> <p><em>Option 2</em></p> <pre><code>AppController *app = (AppController*) [[UIApplication sharedApplication] delegate]; UINavigationController *viewController = [app navController]; [[GCHelper sharedInstance] findMatchWithMinPlayers:2 maxPlayers:2 viewController:viewController delegate:self]; </code></pre> <p>Any help will be appreciated. Thanks in advance...</p>
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    1. COAs I have a bright saw on your question.I found out that answering it is not in a form of Q/A and it needs a little discussion.but still you can earn reputation by answering others question and set A bounty to your question to attract people to answer your question.check [this](http://stackoverflow.com/faq#reputation) and also [this](http://stackoverflow.com/privileges/set-bounties)
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    2. COThank you very much for your comment... I will check the link in detail...
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    3. COgame center notifications enabled on both devices?
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