I know that already exists a Locale.getAvailableLocales() function and some other similars witch returns all the avaiable languages (regardless of whether they are available on your mobile phone or no)
I'm looking a method to return just the languages that i made the translation (i.e.: if i have the 3 folders values-en, values-es, values-pt; i hope get the response: [en, es, pt], or [english, spanish, portuguese]