在UINavigationController层次结构中共享公共背景图像？

Question

I know it's possible to set a background image for the UINavigationBar, but I would like to know if there is a way to share a common background view for all controllers in a UINavigationController. The idea is to have a UIImageView as the background that stays in place rather than "sliding" over itself when navigating to a new controller.

Answer 1

A navigation controller is a kind of view controller and it hosts the currently visible view controller by adding the VC view to its view. You can add things to that view too. Create your image view and add it as a subview of the nav controller view, then send it to the back (or insert at index 0).