The current reference for identifying languages is IETF BCP 47, which combines IETF RFC 5646 and RFC 4647. Codes of the form ll-Xxxx combine an ISO 639-1 language code (two letters) and an ISO 15924 script code (four letters). BCP 47 recommends that language codes be written in lower case and that script codes be written “lowercase with the initial letter capitalized”, but … Read more
It is not good practice to hard code strings into your layout files. You should add them to a string resource file and then reference them from your layout. This allows you to update every occurrence of the word “Yellow” in all layouts at the same time by just editing your strings.xml file. It is … Read more
The importance of locales is that your environment/os can provide formatting functionality for all installed locales even if you don’t know about them when you write your application. My Windows 7 system has 211 locales installed (listed below), so you wouldn’t likely write any custom code or translation specific to this many locales. Edit: The … Read more