objective c - iOS: Retrieve Game Center friends who are online -


i can retrieve game center friends code...

gklocalplayer *lp = [gklocalplayer localplayer];     if (lp.authenticated)     {         [lp loadfriendswithcompletionhandler:^(nsarray *friends, nserror *error)          {              nslog(@"my friends: %@",friends);              if (friends != nil)              {                  [gkplayer loadplayersforidentifiers:friends withcompletionhandler:^(nsarray *players, nserror *error)                   {                        if (error != nil)                       {                           // handle error.                           nslog(@"playerlist error: %@",[error localizeddescription]);                       }                       if (players != nil)                       {                           // process array of gkplayer objects.                           nslog(@"players: %@",players);                       }                   }];              }           }];      }

... however, there way retrieve friends gamekit online?

it not able to. since gkplayer not offer way view if player online or not.

also since technically once person logs on game center "online" till log off. meaning online days while using phone. when logged on if send them invite trumpet noise.

http://developer.apple.com/library/ios/#documentation/gamekit/reference/gkplayer_ref/reference/reference.html#//apple_ref/doc/uid/tp40009599


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