networkActivityIndicatorVisible delegate
===

I'm developing a map application. Each pan or zoom makes a call to the server, where the map is.

I would like to have a bigger networkActivityIndicator on the top rigth corner of the screen, so that the user knows in an easy and fast way that the map loading hasn't finish yet. The map SKD i'm working with has delegates to when the map is loading but the information I need is right there on apple's etworkActivityIndicator. 

Does anyone know of a way have a delegate to the property networkActivityIndicatorVisible in UIApplication? Or similar?

What I would like is that when the smal networkActivityIndicator on the top left corner of the screen is on, my bigger wait signal would also be on.



Thanks,

Hugo Maurício