How do you prevent Notification Center in games?

Question

In iOS7, swiping up from the bottom of the screen or down from the top of the screen slides a \"glass screen\" on top of the app you are using. In many games, it is very fru

Answer 1

To get the same behaviour in iOS 11, you must implement preferredScreenEdgesDeferringSystemGestures on your view controller:

- (UIRectEdge)preferredScreenEdgesDeferringSystemGestures {
    return UIRectEdgeAll;
}

Answer 2

I've set statusBar is initially hidden to YES in Info.plist , but it failed to achieve the result I wanted. Setting UIApplication statusBarHidden to YES does not work in iOS 7 got me the answer I needed:

- (void)viewDidLoad 
{
 [super viewDidLoad];

if ([self respondsToSelector:@selector(setNeedsStatusBarAppearanceUpdate)])
{
    [self prefersStatusBarHidden];
    [self performSelector:@selector(setNeedsStatusBarAppearanceUpdate)];
}
else
{
      // iOS 6
      [[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationSlide];
}
}

- (BOOL)prefersStatusBarHidden {
  return YES;
}

This, as per 21/10/2013, works fine.