UITrait

Declaration

typealias UITrait = any UITraitDefinition.Type

Discussion

The type of a trait serves as a key to uniquely identify a trait in a trait collection. The subscript(_:) method of UITraitCollection and registerForTraitChanges(_:handler:) are two examples that take trait types to identify traits in the collection.

See Also

Custom traits

• Providing data to the view hierarchy with custom traits
• UIMutableTraits
• UITraitDefinition