protected override void OnElementChanged(ElementChangedEventArgs <CustomCamera> e)
        {
            base.OnElementChanged(e);

            if (Control == null)
            {
                m_surfaceView = new SurfaceView(Context);
                SetNativeControl(m_surfaceView);
                cameraPreview = new DroidCameraPreview(m_surfaceView, Context, e.NewElement);
            }

            if (e.OldElement != null)
            {
            }
            if (e.NewElement != null)
            {
            }
        }
 public CameraCaptureSessionCallback(DroidCameraPreview a_parent)
 {
     m_parent = a_parent;
 }
 public OpenCameraCallback(DroidCameraPreview a_parent)
 {
     m_parent = a_parent;
 }