register(_:with:)
Registers an image with the specified trait collection.
Declaration
func register(_ image: UIImage, with traitCollection: UITraitCollection)Parameters
- image:
The image you want to register with the image asset.
- traitCollection:
The traits to associate with
image.
Discussion
Each image in an image asset must have a unique set of traits. If the asset already contains a registered image with the equivalent traits, it replaces that image with the one in the image parameter.