GKFriendRequestComposeViewController
Your game uses the GKFriendRequestComposeViewController class to present a screen that allows the local player to send friend requests to other players.
Declaration
class GKFriendRequestComposeViewControllerOverview
To show a friend request, initialize a new GKFriendRequestComposeViewController object and set the delegate. Optionally, you can customize the request by adding a text message or a list of recipients. Then, present the new view controller and wait for the delegate to be called. Once the delegate is called, dismiss the view controller.
On iOS, you present and dismiss the view controller from another view controller in your game, using the methods provided by the UIViewController class. In macOS, you use the GKDialogController class to present and dismiss the view controller. The listing below shows one way your view controller can allow a player to send a request to other players. For this method, an array of GKPlayer objects is passed in as a parameter. The method instantiates a GKFriendRequestComposeViewController object, sets its delegate, and adds the list of players intended to receive the invitation. The view controller then presents the friend request and returns.
- (void) inviteFriends: (NSArray*) players
{
GKFriendRequestComposeViewController *friendRequestViewController = [[GKFriendRequestComposeViewController alloc] init];
friendRequestViewController.composeViewDelegate = self;
if (players.count)
{
[friendRequestViewController addRecipientPlayers: players];
}
[self presentViewController: friendRequestViewController animated: YES completion:nil];
[friendRequestViewController release];
}Subclassing Notes
The GKFriendRequestComposeViewController class is not intended to be subclassed.