Prevent Screensaver from Playing in App

Based on my very brief test, it appears that UIApplication's "idleTimerDisabled = true" will do that. I tried this in AppDelegate, and the screen saver has yet to fire, although it's now several multiples over the timeout setting:

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject : AnyObject]?) -> Bool {

application.idleTimerDisabled = true

return true

}