GameKit Namespace

The GameKit namespace provides easy communication between iPhone/iPod Touch devices.

Classes

GKAchievement	Represents an achievement in the game.
GKAchievementChallenge	A challenge to a player to complete a specific GKAchievement.
GKAchievementDescription	A combination of text and images that describe a GKAchievement.
GKAchievementViewController	A GKGameCenterViewController that presents a standard user experience to display achievement progress.
GKAchievementViewController.GKAchievementViewControllerAppearance	Appearance class for objects of type GKAchievementViewController.
GKAchievementViewControllerDelegate	A delegate object that allows GKAchievementViewController to respond to lifecycle events.
GKBasePlayer
GKCategoryResult	Category and title results from the asynchronous LoadCategoriesAsync() method.
GKChallenge	A challenge issued by a player to another player.
GKChallengeComposeResult	Holds the return values from the asynchronous method ChallengeComposeControllerAsync(String, GKPlayer[], UIViewController).
GKChallengeEventHandler	The singleton Instance is used to respond to events relating to GKChallenges.
GKChallengeEventHandlerDelegate	A delegate object that allows the application developer fine-grained response to life-cycle events relating to GKChallenges, such as receiving or completing a challenge.
GKChallengeEventHandlerDelegate_Extensions	Extension methods to the IGKChallengeEventHandlerDelegate interface to support all the methods from the GKChallengeEventHandlerDelegate protocol.
GKChallengeListener	A base class for GKLocalPlayerListener.
GKChallengeListener_Extensions	Extension methods to the IGKChallengeListener interface to support all the methods from the GKChallengeListener protocol.
GKCloudPlayer
GKDataEventArgs	Provides data for the DataReceived event.
GKDataReceivedEventArgs	Provides data for the ReceiveData event.
GKDataReceivedForRecipientEventArgs	Provides data for the DataReceivedForRecipient event.
GKErrorEventArgs	Provides data for the DidFailWithError and E:GameKit.GKErrorEventArgs.DidFailWithError events.
GKErrorExtensions	Extension methods for the GameKit.GKError enumeration.
GKFriendRequestComposeViewController	A UINavigationController that presents a screen for sending friend requests.
GKFriendRequestComposeViewController.GKFriendRequestComposeViewControllerAppearance	Appearance class for objects of type GKFriendRequestComposeViewController.
GKFriendRequestComposeViewControllerDelegate	A delegate object that allows fine-grained response to GKFriendRequestComposeViewController life-cycle events.
GKGameCenterControllerDelegate	A delegate object that allows fine-grained response to GKGameCenterViewController events.
GKGameCenterViewController	Game Center user interface to present leaderboards and achievements.
GKGameSession
GKGameSessionErrorCodeExtensions	Extension methods for the GameKit.GKGameSessionErrorCode enumeration.
GKGameSessionEventListener_Extensions
GKIdentityVerificationSignatureResult	Holds the return values from the asynchronous method GenerateIdentityVerificationSignatureAsync()
GKInvite	A matchmaking invitation sent to another player.
GKInviteEventListener	A base class for GKLocalPlayerListener.
GKInviteEventListener_Extensions	Extension methods to the IGKInviteEventListener interface to support all the methods from the GKInviteEventListener protocol.
GKLeaderboard	A class that represents a leaderboard stored in Game Center.
GKLeaderboardSet	Contains a set of GKLeaderboard objects.
GKLeaderboardViewController	A GKGameCenterViewController that presents leaderboards to the player.
GKLeaderboardViewController.GKLeaderboardViewControllerAppearance	Appearance class for objects of type GKLeaderboardViewController.
GKLeaderboardViewControllerDelegate	A delegate object that allows fine-grained control over GKLeaderboardViewController events.
GKLocalPlayer	Represents the authenticated local player.
GKLocalPlayer.Notifications	Notification posted by the GKLocalPlayer class.
GKLocalPlayerListener	A listener that listens for challenges, invitations, and turn based events.
GKMatch	A peer-to-peer network managed by Game Center.
GKMatchConnectionChangedEventArgs	Provides data for the StateChangedForPlayer event.
GKMatchDelegate	A delegate object that allows fine-grained control over GKMatch events.
GKMatchDelegate_Extensions	Extension methods to the IGKMatchDelegate interface to support all the methods from the GKMatchDelegate protocol.
GKMatchEventArgs	Provides data for the DidFindMatch event.
GKMatchmaker	A class that creates matches between players and receives invitations to potential matches.
GKMatchmakerViewController	A UIViewController that presents a standard UI for inviting friends or to allow Game Center to fill remaining players for a match.
GKMatchmakerViewControllerDelegate	A delegate object that allows fine-grained control over GKMatchmakerViewController events.
GKMatchmakerViewControllerDelegate_Extensions	Extension methods to the IGKMatchmakerViewControllerDelegate interface to support all the methods from the GKMatchmakerViewControllerDelegate protocol.
GKMatchmakingPlayerEventArgs	Provides data for the HostedPlayerDidAccept event.
GKMatchmakingPlayersEventArgs	Provides data for the DidFindHostedPlayers event.
GKMatchReceivedDataFromRemotePlayerEventArgs	Provides data for the DataReceivedFromPlayer event.
GKMatchRequest	Contains the parameters for a new match.
GKNotificationBanner	A banner that can be used to display text to a player.
GKPeerChangedStateEventArgs	Provides data for the PeerChanged event.
GKPeerConnectionEventArgs	Provides data for the Failed, E:GameKit.GKPeerConnectionEventArgs.ConnectionRequest and E:GameKit.GKPeerConnectionEventArgs.Failed events.
GKPeerPickerController	A View Controller that can be use to discover other players on other iPhones or iPads.
GKPeerPickerControllerDelegate	Delegate object for the GKPeerPickerController class.
GKPeerPickerControllerDelegate_Extensions	Extension methods to the IGKPeerPickerControllerDelegate interface to support all the methods from the GKPeerPickerControllerDelegate protocol.
GKPlayer	Game Center information about a player.
GKPlayer.Notifications	Notification posted by the GKPlayer class.
GKPlayerEventArgs	Provides data for the ReceivedAcceptFromHostedPlayer event.
GKPlayersEventArgs	Provides data for the DidFindPlayers event.
GKSavedGame	Contains information that is needed to locate and load a saved game.
GKSavedGameListener	Application developers override this class to respond to conflicts or player modifications in saved games.
GKSavedGameListener_Extensions	Extension methods to the IGKSavedGameListener interface to support all the methods from the GKSavedGameListener protocol.
GKScore	Information about a game score.
GKScoreChallenge	A GKChallenge based on a GKScore. Success requires equaling or bettering the score.
GKSession	Provides the functionality necessary to discover and connect to nearby iPhones and iPads over Bluetooth.
GKSessionDelegate	Delegate for the GKSession class.
GKSessionDelegate_Extensions	Extension methods to the IGKSessionDelegate interface to support all the methods from the GKSessionDelegate protocol.
GKStateEventArgs	Provides data for the StateChanged event.
GKTurnBasedEventHandler	A singleton object used to respond to important messages relating to turn-based matches.
GKTurnBasedEventHandlerDelegate	A delegate object that is allows fine-grained response to GKTurnBasedEventHandler events.
GKTurnBasedEventHandlerDelegate_Extensions	Extension methods to the IGKTurnBasedEventHandlerDelegate interface to support all the methods from the GKTurnBasedEventHandlerDelegate protocol.
GKTurnBasedEventListener	Listens for events in turn-based games.
GKTurnBasedEventListener_Extensions	Extension methods to the IGKTurnBasedEventListener interface to support all the methods from the GKTurnBasedEventListener protocol.
GKTurnBasedExchange	Manages the exchange of turn data, accounting for game actions that players take either in turn or out of turn.
GKTurnBasedExchangeReply	Contains a player's response to a turn exchange.
GKTurnBasedMatch	A type of game match that uses store-and-forward to share data and allow for asynchronous turn-taking.
GKTurnBasedMatchmakerViewController	A UINavigationController that provides a standard UX for managing turn-based matches.
GKTurnBasedMatchmakerViewController.GKTurnBasedMatchmakerViewControllerAppearance	Appearance class for objects of type GKTurnBasedMatchmakerViewController.
GKTurnBasedMatchmakerViewControllerDelegate	A delegate object that allows fine-grained response to GKTurnBasedMatchmakerViewController events.
GKTurnBasedParticipant	Stores information about a participant in a turn-based match.
GKVoiceChat	An object that allows players in a match to speak to each other.
GKVoiceChatClient	The model that GKVoiceChatService uses.
GKVoiceChatClient_Extensions	Extension methods to the IGKVoiceChatClient interface to support all the methods from the GKVoiceChatClient protocol.
GKVoiceChatService	Provides voice chat over connected iPhones/iPads.
GKVoiceChatServiceErrorExtensions	Extension methods for the GameKit.GKVoiceChatServiceError enumeration.

Interfaces

IGKAchievementViewControllerDelegate	Interface representing the required methods (if any) of the protocol GKAchievementViewControllerDelegate.
IGKChallengeEventHandlerDelegate	Interface representing the required methods (if any) of the protocol GKChallengeEventHandlerDelegate.
IGKChallengeListener	Interface representing the required methods (if any) of the protocol GKChallengeListener.
IGKFriendRequestComposeViewControllerDelegate	Interface representing the required methods (if any) of the protocol GKFriendRequestComposeViewControllerDelegate.
IGKGameCenterControllerDelegate	Interface representing the required methods (if any) of the protocol GKGameCenterControllerDelegate.
IGKGameSessionEventListener
IGKInviteEventListener	Interface representing the required methods (if any) of the protocol GKInviteEventListener.
IGKLeaderboardViewControllerDelegate	Interface representing the required methods (if any) of the protocol GKLeaderboardViewControllerDelegate.
IGKLocalPlayerListener	Interface representing the required methods (if any) of the protocol GKLocalPlayerListener.
IGKMatchDelegate	Interface representing the required methods (if any) of the protocol GKMatchDelegate.
IGKMatchmakerViewControllerDelegate	Interface representing the required methods (if any) of the protocol GKMatchmakerViewControllerDelegate.
IGKPeerPickerControllerDelegate	Interface representing the required methods (if any) of the protocol GKPeerPickerControllerDelegate.
IGKSavedGameListener	Interface representing the required methods (if any) of the protocol GKSavedGameListener.
IGKSessionDelegate	Interface representing the required methods (if any) of the protocol GKSessionDelegate.
IGKTurnBasedEventHandlerDelegate	Interface representing the required methods (if any) of the protocol GKTurnBasedEventHandlerDelegate.
IGKTurnBasedEventListener	Interface representing the required methods (if any) of the protocol GKTurnBasedEventListener.
IGKTurnBasedMatchmakerViewControllerDelegate	Interface representing the required methods (if any) of the protocol GKTurnBasedMatchmakerViewControllerDelegate.
IGKVoiceChatClient	Interface representing the required methods (if any) of the protocol GKVoiceChatClient.

Enums

GKAuthenticationType
GKChallengeState	An enumeration whose values specify the states of a GKChallenge.
GKConnectionState
GKError	An enumeration whose values specify Game Kit errors.
GKGameCenterViewControllerState	An enumeration whose values specify the current ViewState of a GKGameCenterViewController.
GKGameSessionErrorCode
GKInviteeResponse	An enumeration whose values specify the possible responses of a remote player to a GKInvite.
GKInviteRecipientResponse	Enumerates responses to game play invitations.
GKLeaderboardPlayerScope	An enumeration whose values specify whether a GKLeaderboard should display global results or only for friends.
GKLeaderboardTimeScope	An enumeration whose values specify the amount of time to which a player's best score is restricted.
GKMatchSendDataMode	An enumeration that allows data transmission to trade off speed for reliability.
GKMatchType	An enumeration whose values specify the form of a match.
GKPeerConnectionState	An enumeration whose values specify the state of a peer-to-peer connection.
GKPeerPickerConnectionType	An enumeration whose values specify acceptable ping for peer-to-peer connections.
GKPhotoSize	An enumeration whose values specify the size of a photo being loaded by LoadPhoto(GKPhotoSize, GKPlayerPhotoLoaded).
GKPlayerConnectionState	An enumeration whose values specify the connection state of a GKPlayer.
GKSendDataMode	An enumeration that allows data transmission to trade off speed for reliability.
GKSessionMode	The session mode.
GKTransportType
GKTurnBasedExchangeStatus	Enumerates turn status information.
GKTurnBasedMatchOutcome	An enumeration whose values specify valid outcomes of turn-based matches.
GKTurnBasedMatchStatus	An eumeration whose values specify the status of a turn-based match. (See Status.)
GKTurnBasedParticipantStatus	An enumeration whose values specify the status of turn-based participants. (See Status.)
GKVoiceChatPlayerState	An enumeration whose values specify the state of a GKVoiceChat channel. (See GKPlayerStateUpdateHandler.)
GKVoiceChatServiceError	Errors returned by the GKVoiceChatService.

Delegates

GKAchievementDescriptionHandler	A delegate that is called by LoadAchievementDescriptions(GKAchievementDescriptionHandler).
GKCategoryHandler	A delegate that is called by LoadCategories(GKCategoryHandler).
GKChallengeComposeHandler	Completion handler for for the ChallengeComposeControllerAsync(String, GKPlayer[], UIViewController) method.
GKChallengePredicate	A delegate returned by several properties in GKChallengeEventHandler.
GKCompletionHandler	A delegate passed to LoadAchievements(GKCompletionHandler) that specifies behavior after the downloading of achievements from Game Center is completed.
GKFriendsHandler	A delegate used with LoadFriends(GKFriendsHandler) and FindPlayers(GKMatchRequest, GKFriendsHandler) that defines behavior after the request completes.
GKIdentityVerificationSignatureHandler	Completion handler for the GenerateIdentityVerificationSignature(GKIdentityVerificationSignatureHandler) method.
GKImageLoadedHandler	A delegate passed to GKAchievementDescription that defines behavior after the image has been loaded.
GKInviteHandler	A delegate that is used to define behavior after a response to a GKInvite.
GKLeaderboardSetsHandler	Completion handler for the LoadLeaderboardSets(GKLeaderboardSetsHandler) method.
GKLeaderboardsHandler	Completion handler for the LoadLeaderboards(GKLeaderboardsHandler) method.
GKMatchReinvitation	A delegate used with ShouldReinvitePlayer that allows the application developer to control whether a player should be reinvited.
GKMatchReinvitationForDisconnectedPlayer	Completion handler that app developers can specify for the ShouldReinviteDisconnectedPlayer property.
GKNotificationMatch	A delegate used with FindMatch(GKMatchRequest, GKNotificationMatch) that specifies behavior after a match has been made.
GKPlayerPhotoLoaded	A delegate used with LoadPhoto(GKPhotoSize, GKPlayerPhotoLoaded) to specify behavior after the photo is loaded.
GKPlayersHandler	A delegate used with LoadPlayersForIdentifiers(String[], GKPlayersHandler) to specify behavior to happen after the players are loaded.
GKPlayerStateUpdateHandler	A delegate used with PlayerStateUpdateHandler that specifies behavior when the player's GKVoiceChatPlayerState changes.
GKQueryHandler	A delegate used with QueryActivity(GKQueryHandler) and QueryPlayerGroupActivity(nint, GKQueryHandler) to specify behavior after the query is completed.
GKScoresLoadedHandler	A delegate used with LoadScores(GKScoresLoadedHandler) that specifies behavior after the scores are loaded.
GKTurnBasedMatchData	A delegate that is used with LoadMatchData(GKTurnBasedMatchData) to specify behavior after the data is loaded.
GKTurnBasedMatchesRequest	A delegate used with LoadMatches(GKTurnBasedMatchesRequest) to specify behavior after the matches have been loaded.
GKTurnBasedMatchRequest	A delegate that specifies the completion handler for FindMatch(GKMatchRequest, GKTurnBasedMatchRequest).

Remarks

The framework provides the foundation to send data between nearby iPhone/iPod touch devices (using Bluetooth) and to provide voice chat between the devices.