how to lock portrait orientation for only main view using swift

Question

I have created an application for iPhone, using swift, that is composed from many views embedded in a navigation controller. I would like to lock the main v

Answer 1

This is the syntax for Swift 3 (XCode 8.2 beta), where these methods where converted to properties:

extension UINavigationController {
    override open var shouldAutorotate: Bool {
        return false
    }
}

class ViewController: UIViewController {

    /*
            ...
    */

    override var supportedInterfaceOrientations: UIInterfaceOrientationMask {
        return UIInterfaceOrientationMask.portrait
    }
}