title: Android: Set Random colour background on create
body: <p>What I want is when I load my app up it to randomly have a certain colored background from a predefined list of strings stored in a values xml file called colours. </p>
  
  <p>What I currently have is one colour set as the background defined through the string colour code using the gui editor in eclipse. </p>
  
  <p>For the life of me can't work out how to get the background to randomly pick one of the 9 strings and display it each time the activity is activated.</p>
  
  <p>Guidance on this would be invaluable. </p>