System preferences, settings, defaults and locale...

[robl]

I need to determine the user's preferred language(s) and whether their region uses metric/English.  On iOS, these are stored in the defaults system.  I'm not sure where they are stored on Android and other phones.

What are developers using currently to access this type of information?  Ideally, I'd like a cross platform solution.  If not, something for iOS and Android.  Otherwise, is there a plugin for NSUserDefaults on iOS?  And what would I do for Android?  It seems like I'd have to write a cross-platform plugin.

[robl]

BTW - I saw the other recent post which should solve the language issue (although I don't know if I can get an ordered list of languages rather than just one language.  e.g.  I speak Spanish but also French, English.)  More importantly, it doesn't solve my metric vs. English units issue.