title: How can I execute something just once per application start?
body: <p>I'd like to implement an update checker in an application, and I obviously only need this to show up once when you start the application. If I do the call in the <code>onCreate()</code> or <code>onStart()</code> method, it'll be shown every time the activity is created and this is not a viable solution.</p>
  
  <p>So my question is: <strong>Is there a way to do something, like check for updates, just once per application start / launch?</strong></p>
  
  <p>I'm sorry if it's a bit hard to understand, I'm having difficulties explaning myself on this one.</p>