I haven't worked in Android, but a quick perusal at least passes my giggle test, which frankly too many languages do not.

This is essentially a refinement of the i18n support that has been in Java for ages. I probably would not have stuck with Java as long as I did if their localization support wasn't as good as it was (not to say it's perfect, because it's a bit clunky). Google has made a few of the examples into a more concrete requirement, which is nice.