title: All steps to add "Change language" to Android Preferences
body: <p>I've seen many post, but they just mention the part <a href="https://stackoverflow.com/questions/31183732/changing-language-in-run-time-with-preferences-android">how to change the language</a> from the activities, but not where they have located the language in their android project. Also in the <a href="https://developer.android.com/training/basics/supporting-devices/languages.html?hl=es-419" rel="nofollow noreferrer">official Android developer guide</a> it it said to create a new directory, e.i. "values-es", but I just want to change the language (string.xml), not all the other XML I have located inside the "value" directory (colors.xml, styles.xml, etc).</p>
  
  <p>So, what changes should I made to my android project in order to add new "string.xml" files with different languages? Do I have to do as said in the Android developers guide and create a new "values" folder even that means repeat common XML files? This sounds to me like isn't what I need, that can be acomplished with an easier way.</p>