How to show achievement on ipad ?

cocos2d-x C++
#1

I use these codes to do it .

  • (void) showAchievements
    {
    GKAchievementViewController *achievements = [[GKAchievementViewController alloc] init];
    if (achievements != NULL)
    {
    achievements.achievementDelegate = self;
    [self presentModalViewController: achievements animated: YES];
    }
    }

However, achievement for iphone comes out, not for ipad .So,how to make achievement for ipad come out?
Thank you！！！

#2

Did you ever figure out how to do this? Please let me know, I’m having a similar issue. Where do you create the view controller?