public override void OnOpened(CameraDevice camera)
            {
                CameraView.ActiveCameraDevice = camera;

                CameraView.StartPreview();

                CameraView.OpeningCamera = false;
            }
 public void OnSurfaceTextureAvailable(SurfaceTexture surface, int width, int height)
 {
     CameraView.ConfigureTransform(width, height);
     CameraView.StartPreview();
 }