Creates and returns a layout attributes object for a supplementary view based on the specified information.
- macOS 10.11+
A string that identifies the type of the supplementary view. Use this string to differentiate from among the supplementary views in a given section. This parameter must contain a valid value.
The index path of the item. You can use this information to identify the item in your app’s data structures. This parameter must contain a valid value.
A new layout attributes object configured with the initial attributes for the supplementary view.
Call this method when you need to create a layout attributes object for a supplementary view in a collection view. Supplementary views are a secondary type of content that display data related to a specific section. For example, header and footer views in a grid layout implemented using supplementary views. This method uses the parameters to set the initial values of the
represented properties the returned object.