Get the current language in device

If you want to get the selected language of your device, this might help you:

Locale.getDefault().getDisplayLanguage();

You can use Locale.getDefault().getLanguage(); to get the usual language code (e.g. "de", "en")

I've checked the Locale methods on my Android 4.1.2 device, and the results:

Locale.getDefault().getLanguage()       ---> en      
Locale.getDefault().getISO3Language()   ---> eng 
Locale.getDefault().getCountry()        ---> US 
Locale.getDefault().getISO3Country()    ---> USA 
Locale.getDefault().getDisplayCountry() ---> United States 
Locale.getDefault().getDisplayName()    ---> English (United States) 
Locale.getDefault().toString()          ---> en_US
Locale.getDefault().getDisplayLanguage()---> English
Locale.getDefault().toLanguageTag()     ---> en-US