title: Easy way to update app content via apple watch
body: <p>I couldn't find an easy way to update the view in my iPhone app when I push a button on the AppleWatch App yet.</p>
  
  <p>I tried it with NSUserDefaults Observer like this:</p>
  
  <p>iPhone App Viewcontroller(inside ViewDidLoad()):</p>
  
  <pre><code> // Create and share access to an NSUserDefaults object.
   mySharedDefaults = NSUserDefaults(suiteName: "group.sharedTest")
  
  //Add Observer    
  NSUserDefaults.standardUserDefaults().addObserver(self, forKeyPath: "test", options: NSKeyValueObservingOptions.New, context: nil)
  </code></pre>
  
  <p>In the Watchkit Extensions InterfaceController I added an IBAction with the button with this code:</p>
  
  <pre><code>mySharedDefaults!.setObject("testValue", forKey: "test")
  mySharedDefaults!.synchronize()
  </code></pre>
  
  <p>But when I press the button, nothing happens!
  If I set an object inside my iPhone ViewController it works, but not if it is updated via the app!
  Can someone help me?</p>