title: How to call a method defined on the iPhone from the Apple Watch
body: <p>Is there any way to call a defined method in a class on the iPhone from the Watchkit extension?</p>
  
  <p>From my understanding currently one of the ways to communicate locally between Watch kit and the iPhone is by using <code>NSUserDefaults</code>, but are there other ways? </p>
  
  <p>A simple example would be great.</p>