public MainViewModel (RelativeLayout mainLayout, Context context)
{
_webService = ColorWebServices.Instance;
_shapeFactory = ShapeFactory.Instance;
_mainLayout = mainLayout;
_context = context;
}
public ShapeViewModel (ShapeBase shape)
{
_shape = shape;
_webServices = ColorWebServices.Instance;
_imageService = ImageService.Instance;
_shapeFactory = ShapeFactory.Instance;
DoubleTapCommand = new Command (async ()=> HandleDoubleTap());
}