Cannot rotate interface orientation to portrait upside down

Question

Both on iPhone simulator and iPhone 3GS (iOS 6) I cannot manage to set the orientation to portrait upside down. I have just one ViewController. I\'ve added this code in it:<

Answer 1

I tried many ways for this. It seems only one way it works, but globally through the app, not only for particular view controller.

First, you have to check on Upside Down of Device Orientation in target general settings.

Then, in navigation controller extension, you override the supportedInterfaceOrientations method

extension UINavigationController {
    override public func supportedInterfaceOrientations() -> UIInterfaceOrientationMask {
        return .All
    }
}