How to force view controller orientation in iOS 8?

Question

Before iOS 8, we used below code in conjunction with supportedInterfaceOrientations and shouldAutoRotate delegate methods to force app orie

Answer 1

My requirements are

1. lock all views in portrait mode
2. use AVPlayerViewController to play video

When video is playing, if it's a landscape then allow the screen to rotate landscape right and landscape left. If it's a portrait then lock the view in portrait mode only.

First, define supportedInterfaceOrientationsForWindow in AppDelegate.swift

var portrait = true
func application(application: UIApplication, supportedInterfaceOrientationsForWindow window: UIWindow?) -> UIInterfaceOrientationMask {
    if portrait {
        return .Portrait
    } else {
        return .Landscape
    }
}

Second, in your main view controller, define following functions

override func supportedInterfaceOrientations() -> UIInterfaceOrientationMask {
    print("\(#function)")
    return .Portrait
}

override func preferredInterfaceOrientationForPresentation() -> UIInterfaceOrientation {
    return .Portrait
}

override func shouldAutorotate() -> Bool {
    return false
}

Then, you need to subclass AVPlayerViewController

class MyPlayerViewController: AVPlayerViewController {

    var size: CGSize?

    var supportedOrientationMask: UIInterfaceOrientationMask?
    var preferredOrientation: UIInterfaceOrientation?

    override func viewDidLoad() {
        super.viewDidLoad()

        if let size = size {
            if size.width > size.height {
                self.supportedOrientationMask =[.LandscapeLeft,.LandscapeRight]
                self.preferredOrientation =.LandscapeRight
            } else {
                self.supportedOrientationMask =.Portrait
                self.preferredOrientation =.Portrait
            }
        }
    }

Override these three functions in MyPlayerViewController.swift

override func supportedInterfaceOrientations() -> UIInterfaceOrientationMask {
    return self.supportedOrientationMask!
}

override func preferredInterfaceOrientationForPresentation() -> UIInterfaceOrientation {
    return self.preferredOrientation!
}

Because user might rotate device landscape left or landscape right, we need to set auto rotate to be true

override func shouldAutorotate() -> Bool {
    return true
}

Finally, create MyPlayerViewController instance in your view controller and set the property size value.

let playerViewController = MyPlayerViewController()

// Get the thumbnail  
let thumbnail = MyAlbumFileManager.sharedManager().getThumbnailFromMyVideoMedia(......)

let size = thumbnail?.size
playerViewController.size = size

Initiate your player with proper videoUrl, then assign your player to playerViewController. Happy coding!