小编Die*_*roz的帖子

我想围绕我的右角,但只适用于左角

let path = UIBezierPath(roundedRect: view.bounds, byRoundingCorners: [UIRectCorner.TopLeft, UIRectCorner.TopRight], cornerRadii: CGSizeMake(20.0, 20.0))
let maskLayer = CAShapeLayer()
    maskLayer.path = path.CGPath
    view.layer.mask = maskLayer
    view.layer.masksToBounds = true

我在ViewDidAppear中拥有所有这些代码

captureSession = AVCaptureSession()


   // let backCamera = AVCaptureDevice.defaultDeviceWithMediaType(AVMediaTypeVideo)
    var captureDevice:AVCaptureDevice! = nil
    if (camera == CameraType.Front) {
        let videoDevices = AVCaptureDevice.devicesWithMediaType(AVMediaTypeVideo)

        for device in videoDevices{
            let device = device as! AVCaptureDevice
            if device.position == AVCaptureDevicePosition.Front {
                captureDevice = device
                break
            }
        }
    } else {
        captureDevice = AVCaptureDevice.defaultDeviceWithMediaType(AVMediaTypeVideo)
    }

    do {
        let input = try? AVCaptureDeviceInput(device: captureDevice)

        if (captureSession?.canAddInput(input) != nil){

            captureSession?.addInput(input)

            stillImageOutput = AVCaptureStillImageOutput()
            stillImageOutput?.outputSettings = [AVVideoCodecKey : AVVideoCodecJPEG]

            if (captureSession?.canAddOutput(stillImageOutput) != nil){
                captureSession?.addOutput(stillImageOutput)

                previewLayer = AVCaptureVideoPreviewLayer(session: captureSession) …