Need help designing application with UIPageControl and UIScrollView
<p>I have looked at the PageControl example from Apple and have an architectural requirement difference.  In the example the scroll view and page control objects are at the app delegate level.  This means the scroll view and page control appears on every view of the application.</p>

<p>However, I have a "settings" view toggled from an info button (for now) that should not have these controls displayed.  Therefore, I need to move my scroll view, page control, and view controllers objects down a layer and I'm struggling with how to best do this.</p>

<p>For example, the primary application view consists of metals (periodic elements).  From this view I need a scroll view, page control, and info button on every view descending from here.  Each metal will have it's own subclass where different images, calculations, etc will be displayed but I believe I need each of these subclassed elements to share the same scroll view, page control, and viewControllers array, right?  Do I need a singleton?</p>
