Creates and returns a layout attributes object for the item at the specified index path.
- macOS 10.11+
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 containing the initial attributes for the item.
Call this method when you need to create a layout attributes object for an item in a collection view. Items are the main type of content presented by a collection view. Items are grouped into sections, although a collection view may have only one section. This method assigns the provided index path to the
index property of the returned object.