Game Center authentication error

Question

I\'m trying to call the authentication method of game center, however no authentication screen comes up and the callback return with an error : \"the requested operation has

Answer 1

You should do something like that after you have tested if game center is available on the specific device:

GKLocalPlayer *localplayer = [GKLocalPlayer localPlayer];
[localplayer authenticateWithCompletionHandler:^(NSError *error) {
    if (error) {
        //DISABLE GAME CENTER FEATURES / SINGLEPLAYER
    }
    else {
        //ENABLE GAME CENTER FEATURES / MULTIPLAYER
    }
}];