In your project you will already have a folder res/values that holds the English version of your strings.xml file. To support another language (for example French) simply create another folder, in this case res/values-fr and place a copy of your string file in there. Then make the changes to the French version of the file. When your user selects French as their language of choice in their phone settings, your app will automatically start using the French version of the file. If the correct local version of your file doesn't exist, or you forget to translate a value, the default English version will be used.
For more details see http://developer.android.com/guide/topi ... ation.html
Hope this helps