#import <Peekaboo/Peekaboo.h>

    @interface YourViewController : UIViewController <NEIPeekabooDelegate>
    @end

    @implementation YourViewController
    - (void) viewDidLoad {
        [super viewDidLoad];
        [self enablePeekabooUsingScrollView:scrollView
                                       mask:NEIPeekabooAutomaximizeNavigatorBar | NEIPeekabooAutomaximizeToolbar
                                   delegate:self];

    }

    /******************************************************************************************************************
        Following methods have no relation with optional mask NEIPeekabooAutomaximizeNavigatorBar and NEIPeekabooAutomaximizeToolbar,
        but can used to instead of or in conjuction with mask to expand or contract views to maximize space. Mask if provided,
        allow you to not have to hide or show respective controllers manually, but if provided, are maniuplated using standard
        show/hide navigation and toolbar methods. If used, you must conform to NEIPeekabooDelegate protocol.
     ******************************************************************************************************************/
    #pragma mark - NEIPeekabooDelegate

    - (BOOL)peekabooViewportIsMaximized {
        // optional: you can use any logic to determine if its maximized, otherwise internal logic is used of not implemented
        return self.navigationController.navigationBarHidden;
    }

    - (BOOL)peekabooShouldAlterViewport:(id)scrollView maximized:(BOOL)maximized {
        return YES; //optional: always defaults to YES
    }
    - (void)peekabooWillAlterViewport:(id)scrollView maximized:(BOOL)maximized {
        //optional: You can add your own code that will add/reduce available space.
    }

    - (void)peekabooDidAlterViewport:(id)scrollView maximized:(BOOL)maximized {
        //optional: You can add your own code that will add/reduce available space.
    }
    @end