title: Needing Context in non-Activity classes
body: <p>I have some classes within my application that need to call Android functions that require the Context as a parameter.
  I don't have it as the class is not a subclass of the Activity class.</p>
  
  <p>What is the correct way to tackle this problem?</p>
  
  <ol>
  <li>Pass it as a parameter on each call?</li>
  <li>Pass it at class instantiation and keep it?</li>
  </ol>