How can I get/change the current typing language?

I want to make an app that allows the user to quickly change input language on his android phone...

I've searched Android Dev but I couldn't find the appropriate class... Any 开发者_C百科ideas?

---

Unfortunately, you can not change the locale of the user from withing your application.

This is not possible until the date of this question.

Swiping the spacebar to change the locole (language) is a behavior due to the android's default soft keyboard.

It will not work ):