Objective-C Client Reference
![Obj-C multiplayer code reference documentation for class: PlayerIO](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
Entry class for the initial connection to Player.IO.
![Obj-C multiplayer code reference documentation for class: PIOAchievement](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
An Achievement
![Obj-C multiplayer code reference documentation for class: PIOAchievements](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
The Player.IO Achievements service
![Obj-C multiplayer code reference documentation for class: PIOAdTrack](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
The Player.IO AdTrack service.
![Obj-C multiplayer code reference documentation for class: PIOBigDB](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
The BigDB service.
![Obj-C multiplayer code reference documentation for class: PIOBuyItemInfo](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
Represents information about the purchase of a PayVault item.
![Obj-C multiplayer code reference documentation for class: PIOClient](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
Access class to the various services.
![Obj-C multiplayer code reference documentation for class: PIOConnection](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
A connetion to a multiplayer room.
![Obj-C multiplayer code reference documentation for class: PIODatabaseArray](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
Represents an BigDB array of values that can be accessed by index.
![Obj-C multiplayer code reference documentation for class: PIODatabaseObject](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
This class represents a BigDB Database Object that has a key and a collection of named properties.
![Obj-C multiplayer code reference documentation for class: PIOError](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
An error in Player.IO
![Obj-C multiplayer code reference documentation for class: PIOErrorCodes](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
The error codes used by PIOError objects
![Obj-C multiplayer code reference documentation for class: PIOErrorLog](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
The Player.IO ErrorLog service.
![Obj-C multiplayer code reference documentation for class: PIOGameFS](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
The Player.IO GameFS service.
![Obj-C multiplayer code reference documentation for class: PIOGameRequest](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
A received game request.
![Obj-C multiplayer code reference documentation for class: PIOGameRequests](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
The Player.IO GameRequests service
![Obj-C multiplayer code reference documentation for class: PIOGameRequestSendDialogResult](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
The object that contains the result of the GameRequestSendDialog
![Obj-C multiplayer code reference documentation for class: PIOMessage](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
Represents a message sent between client and server.
![Obj-C multiplayer code reference documentation for class: PIOMultiplayer](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
The Multiplayer Service
![Obj-C multiplayer code reference documentation for class: PIONotification](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
An IOS Notification. You must specify either the "alert" key or the "badgeCount" using the setWithKey method to create a valid notification object.
![Obj-C multiplayer code reference documentation for class: PIONotificationEndpoint](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
Notifications Endpoint
![Obj-C multiplayer code reference documentation for class: PIONotifications](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
The Player.IO Notifications service.
![Obj-C multiplayer code reference documentation for class: PIOOneScore](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
The YGN OneScore service
![Obj-C multiplayer code reference documentation for class: PIOPayVault](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
The Player.IO PayVault.
![Obj-C multiplayer code reference documentation for class: PIOPayVaultHistoryEntry](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
An entry in the user's PayVault history.
![Obj-C multiplayer code reference documentation for class: PIOPlayerInsight](/generate-asset/638576493103730360/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
PlayerInsight
![Obj-C multiplayer code reference documentation for class: PIORegistrationError](/generate-asset/638576493103886357/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
Error class for PlayerIO QuickConnect registration errors.
![Obj-C multiplayer code reference documentation for class: PIORoomInfo](/generate-asset/638576493103886357/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
Information about a room returned from listRooms
![Obj-C multiplayer code reference documentation for class: PIOServerEndpoint](/generate-asset/638576493103886357/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
The address and port where a game server can be reached
![Obj-C multiplayer code reference documentation for class: PIOVaultItem](/generate-asset/638576493103886357/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
Represents information about an item in a user's Vault.
![Obj-C multiplayer code reference documentation for class: PIOYahoo](/generate-asset/638576493103886357/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
The Yahoo Service.
![Obj-C multiplayer code reference documentation for class: PIOYahooProfile](/generate-asset/638576493103886357/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
A Yahoo Profile
![Obj-C multiplayer code reference documentation for class: PIOYahooProfiles](/generate-asset/638576493103886357/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
The YahooProfile Service.
![Obj-C multiplayer code reference documentation for class: PIOYahooRelations](/generate-asset/638576493103886357/File/m/i/icons/objectivec.PdMMQ9oq8hUVuSDlZcGDlw.png)
The YahooRelations Service.