How to identify device language from the App language in Android 13?

Question

I added support per app language to my app, the android 13 feature, now it is both English and Russian. I can change the app language from settings and no need to change the device language. Now for analytics purposes, I need to know the app language and the device language. But if my device is in English and the app is in Russian, I always receive Russian -

   Resources.getSystem().configuration.locales.get(0).language  - ru

   context.resources.configuration.locales[0].language - ru

   Locale.getDefault().language - ru

I expect to receive en from

Resources.getSystem().configuration.locales.get(0).language

and ru from

context.resources.configuration.locales[0].language

I will be glad for any help

Illconditioned

Try this ConfigurationCompat.getLocales(Resources.getSystem().getConfiguration()) – Crawly

The suggestion above does not work. The first locale in the list is still the app language, not the device language. – Imperfect

@VivekGupta also receive the app language and not the device language – Illconditioned

Answer 1

I've been working with these:

AppCompatDelegate.getApplicationLocales()  // app locales
LocaleManagerCompat.getSystemLocales(Context) // system locales

getApplicationLocales() may return an empty array [] if there is no app-level setting. In that case, the system locale is being used.

I also use AppCompatDelegate.setApplicationLocales(LocaleListCompat) for consistency.

I'm not sure if there are non-Compat classes available for targeting only API 33, but this is currently working for me down to API 27.

As mentioned in another answer, you'll need to import androidx.appcompat:appcompat:1.6.0-beta01 - see first line here.

Conception

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Note that AppCompatDelegate.getApplicationLocales() only works after onCreate() – Crotchety

Answer 2

The system locale list is available from LocaleManagerCompat.getSystemLocales(Context) in androidx.core:core:1.9.0-beta01 or later.

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