localization - How to get language (locale) currently Android app displays?

Question

How to get know language (locale) currently Android app uses to display texts to user?

I know I can use Locale.getDefault() to get default OS locale. But it may differ from locale used by app to display text and other resources, if this locale isn't supported by app.

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I need to determine language (locale) displayed by the app, thus the app can pass language to the server, so it can localise returned results.

Answer 1

My own solution is to add to strings.xml key-value pair locale=<locale code>, thus context.getResources().getString(R.string.locale) will return locale code specific for used locale.