title: iphone - how to refresh a uiview with a scrollview?
body: <p>any advice welcome! :)</p>
  
  <p>My screen design is landscape with text on the left (this is in the main view) and a scrollview on the right (which contains an interactive map image)</p>
  
  <p>The mainviewcontroller contains the scrollview as an outlet.
  In the scrollviewcontroller I add a 'map' view into the scrollview.
  In the mapviewcontroller I update an array in the appdelegate, depending on the user input.</p>
  
  <p>I would now like to refresh the main uiview that contains the scrollview to display the updated text from the appdel array - whenever the user clicks a button.</p>