How to put the UIPageControl element on top of the sliding pages within a UIPageViewController?

Question

Regarding to this tutorial by AppCoda about how to implement a app with UIPageViewController I\'d like to use a custom page control element on top of the pages instead of at

Answer 1

The same effect can be achieved simply by subclassing UIPageViewController and overriding viewDidLayoutSubviews as follows:

-(void)viewDidLayoutSubviews {
    UIView* v = self.view;
    NSArray* subviews = v.subviews;
    if( [subviews count] == 2 ) {
        UIScrollView* sv = nil;
        UIPageControl* pc = nil;
        for( UIView* t in subviews ) {
            if( [t isKindOfClass:[UIScrollView class]] ) {
                sv = (UIScrollView*)t;
            } else if( [t isKindOfClass:[UIPageControl class]] ) {
                pc = (UIPageControl*)t;
            }
        }
        if( sv != nil && pc != nil ) {
            // expand scroll view to fit entire view
            sv.frame = v.bounds;
            // put page control in front
            [v bringSubviewToFront:pc];
        }
    }
    [super viewDidLayoutSubviews];
}

Then there is no need to maintain a seperate UIPageControl and such.