containsTraits(in:)
Queries whether a trait collection contains all of another trait collection’s values.
Declaration
func containsTraits(in trait: UITraitCollection?) -> BoolParameters
- trait:
A trait collection that you want to compare to the current trait collection.
Return Value
This method returns true if the receiver contains all of the trait values in the trait collection passed in the trait parameter, and returns false otherwise.
Discussion
Use this method to compare two standalone trait collections, or to compare the iOS interface environment’s trait collection to a standalone trait collection.