Returns an array of all published filter names that match all the specified categories.
- iOS 5.0+
- macOS 10.4+
- UIKit for Mac 13.0+Beta
- tvOS 9.0+
- Core Image
One or more of the filter category keys defined in Filter Category Keys. Pass
nilto get all filters in all categories.
An array that contains all published filter names that match all the categories specified by the
When you pass more than one filter category, this method returns the intersection of the filters in the categories. For example, if you pass the categories
k, you obtain all the filters that are members of both the built-in and color adjustment categories. But if you pass in
k, you will not get any filters returned to you because there are no filters that are members of both the generator and stylize categories. If you want to obtain all stylize and generator filters, you must call the
filter method for each category separately and then merge the results.