Change language on runtime using SetLanguage() method

[JoneruKudo]

Hi there,
I tried to use the SetLanguage() method for changing the language of keyboard input, but it doesn't change to the designated language, and sometimes it always sets to English even though the ISO code is 'ja' or 'ar'.
I used ISO code 'en' for English (US) keyboard and 'ja' for Japanese keyboard.

Platform : Android
Android Version : Android 10
Device : RakutenP10

[mopsicus]

Have you added a keyboard layout in the device settings?

[JoneruKudo]

Yes.
Currently I have English(us), Japanese and Arabic.

[mopsicus]

Ok, I'll check, maybe the language code is wrong.....