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I tried to add a Game Center leaderboard, first setting it on iTunes Connect but when I have to write the code in Xcode I don't know what I have to do. I want to open the leaderboard with a shake gesture and for that I will use this code in the ViewController.m file:

-(void)motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event {
    if(event.subtype == UIEventSubtypeMotionShake) {
       // Code you want to run when the shake began
       }
}

Is that code right? And please can anyone help me what I have to do for appear the leaderboard when shaking?

CodeSmile
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Facundo Schiavoni
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1 Answers1

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  1. Enable GameCenter in the Project's capabilities tab
  2. Create a GKGameCenterViewController instance
  3. Set the appropriate viewState property
  4. If necessary, set the gameCenterDelegate property

  5. Present the VC:

    GKGameCenterViewController *vc = [GKGameCenterViewController new];
vc.viewState = GKGameCenterViewControllerStateLeaderboards;
vc.gameCenterDelegate = self;
[self presentViewController:vc animated:YES];
davidism
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Aseider
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  • I used this code but the message Game Center unavailable the player is not signed in appears and after that I can't interact with the screen(buttons, gestures, etc) :/ – Facundo Schiavoni Feb 07 '15 at 22:41
  • check your sandbox settings http://stackoverflow.com/questions/25945420/ios-8-game-center-error/25945487#25945487 – Valar Morghulis Feb 08 '15 at 08:26
  • You'll also have to authenticate the local player using `[[GKLocalPlayer localPlayer] setAuthenticateHandler:]` – Aseider Feb 10 '15 at 13:03