How can I show/hide the status bar on a pageViewController using tap gesture (iOS8 / Swift)

Looking through all the solutions given to similar questions, I have been trying to get the `statusBar` to show/hide with a tap gesture. I have set `View controller-based status bar appearance = NO` in the plist. I have tried the following code in my `DataViewController` (page view controller) AND in the `RootViewController`: ``` let app = UIApplication.sharedApplication() app.setStatusBarHidden(true, withAnimation: UIStatusBarAnimation.Fade) ``` and it doesn't work. This is embedded in a `UITabBarController`, would that make a difference? Also, I was able to get the following to hide the statusBar from the `RootViewController`: ``` override func prefersStatusBarHidden() -> Bool { return true } ``` But the `DataViewController` does not even call this function, and was only able to hide it permanently this way, rather than toggle it on/off. Any ideas?