Q:

Android list of language identifiers for values

I want to implement multilanguage in my app.  I've read the following documentation and it was very intresting (Do android support multiple languages?). 
I understand how it works, but is there a list of identifiers available?  
For example, if I want to implement the language Dutch, is it enough to implement the first two letters of the language (in this case 'ne') or not? 
Thank you very much. 

A:

Actually those are not the first two letters of the language, but the  ISO 639-1  language code.  E.g. 'de' for German, 'fr' for French and 'nl' for Dutch. 
See the docs on providing resources for more details. 

A:

here are the language codes http://www.loc.gov/standards/iso639-2/php/code_list.php
You want to use the iso 639-1 code 
e.g. for Spanish create a values folder named values-es

A:

The previous answers are not correct.  Android locales are build on ISO 639-1 but offer more specific codes.  For example, Brazil is not listed in ISO 639-1, but Android allows for a values-pt-rBR folder to target Brazil only. 
See https://github.com/championswimmer/android-locales for all available locales

