[Android]How to gets current input language when keyboard shown

See more:

Mobile

Android

Hi,
Sorry, I reaally got a lot of unresolved questions(problems) here. But here's go again another question :D.

I'm trying to get what's my current input language when I changes it on keyboard setting in Android.
Says my android device language (system language) is English (EN), and then I changes my keyboard language (not system language) to Korea(KR). How can I get that my current input language is Korea?

For device language I can simply use this

Locale.getDefault().getLanguage()

But how can I get my current input language?

Many thanks..