Finding the current localization of iOS app in code

Question

Connected issue: Non-English default language for iOS App?

I am wondering how to check the current localization of my app in code. For example: I want to check if the app is running with German localization (.strings, storyboard) This line of code:

[[[NSLocale preferredLanguages] objectAtIndex:0] isEqualToString:@"de"]

doesn't provide the correct answer. Because if a user's language list in device settings looks like this for example (french, german, english) and we have only localization for english and german, application is launched in german but the above condition isn't fulfilled.

Answer 1

My naive solution would be to create a localized string "LanguageCode" which is set to "de" in the german string file and to "en" in the english string file

e.g.:

if ([NSLocalizedString(@"LanguageCode", @"en, de etc.") isEqualToString:@"de"]) {
    // german
}

Answer 2

NSString * language = [[NSLocale preferredLanguages] objectAtIndex:0];

This will return a two letter code for the currently selected language. "en" for English, "es" for Spanish, "de" for German, etc. For more examples, please see this Wikipedia entry (in particular, the 639-1 column):