3 Answers

• You can check the current orientation by looking at Ti.UI.orientation.

  You can monitor orientation change doing something like this:

  Ti.Gesture.addEventListener('orientationchange', function(e) {
    // Do something about orientation
  });
  

• A workaround (aka Hack) would be to do this:

  Call CurrentOrientation() instead of Ti.UI.orientation. This will return 3 if it's landscape or 1 if portrait.
  The downside is you don't know which way it's facing (left/right or up/down)

  function CurrentOrientation()
  {
  
      var w = Titanium.Platform.displayCaps.platformWidth;
      var h = Titanium.Platform.displayCaps.platformHeight;
      if( w > h){
          return 3;
      }else{
          return 1;
      }
  }
  

• In more recent versions of Titanium you can use the Ti.Gesture.orientation property.