支持多语言，多角色本机应用程序的架构

we are developing a native app running on different mobile OS with extensive functionality. We have to provide multi language and multi user role scenarios. As backend we have to use REST Services with XML based data exchange. We are planing to implement a 'appInit' REST call after log-in to provide the UI with the valid menu items and all UI texts respecting the role of the current user. The server side stored user profile contains the user language so we are able to choose the correct language instead of OS language. Is this a acceptable practice? thx.we are developing a native app running on diffe