Best way to apply a theme to an iPhone app

Question

Hi I am trying to write some iPhone app with a theme switcher, where users can select a theme to change the background color, alpha, images, and some push buttons\' look and fee

Answer 1

Haven't got any answers. I implemented it with events and singlton. Basically a singleton setting object dispatches changes to observers, which update the GUI upon the events. I remember there is a way you can listen to an instance variable change, but forgot how. My current way works pretty well for me anyway.