iOS: get available locales in my project

Question

I created several .strings files for my app's localization. Each one is corresponding to a locale. Now I want to get a list of all available locale in my app. Is there any function to help me do that??

E.g. if my app just supports English, Chinese, French the function can return [en, zh, fr]

Answer 1

swift:

var availableLanguages = NSBundle.mainBundle().localizations as [String]

objc:

NSArray *availableLanguages = [[NSBundle mainBundle] localizations];