Improve clarity of "maps" page during loading or on error

[aNullValue]

I've gotten a couple of complaints, asking when we're going to release maps in-app (as in PDFs). The problem is, I released them a good while ago.

It seems that the app says "404" whenever there's no map to present... including if that's because it just hasn't finished downloading it.

Is it possible for us to improve that some way, to give the user more clarity? Perhaps if there are no maps in the array, then 404. If there are but they haven't loaded yet, then "Loading...". If loading failed, then "Failed to load". Or something to that effect.