iOS CAlayer Orientation AVCaptureVideoPreviewLayer doesn't rotate

Question

Summary: I can\'t force the CALayer to respond correctly to orientati

Answer 1

The answer using willRotateToUserInterfaceOrientation works fine, except that that method has been deprecated. So if you're able to use iOS 9, then here's the way to do it, in Swift:

override func viewWillTransitionToSize(size: CGSize, withTransitionCoordinator coordinator: UIViewControllerTransitionCoordinator) {
        let newOrientation = UIDevice.currentDevice().orientation
        switch newOrientation {
        case .LandscapeLeft:
            self.capturePreviewLayer?.connection.videoOrientation = .LandscapeLeft
        case .LandscapeRight:
            self.capturePreviewLayer?.connection.videoOrientation = .LandscapeRight
        case .Portrait, .Unknown, .FaceUp, .FaceDown:
            self.capturePreviewLayer?.connection.videoOrientation = .Portrait
        case .PortraitUpsideDown:
            self.capturePreviewLayer?.connection.videoOrientation = .PortraitUpsideDown
        }
        super.viewWillTransitionToSize(size, withTransitionCoordinator: coordinator)
    }