The ranges of characters to highlight in the subtitle string.
- iOS 9.3+
- macOS 10.11.4+
- tvOS 9.2+
This property contains an array of
NSValue objects, each of which contains an
NSRange type defining a range of characters in the
subtitle string. Use this property to identify the ranges of characters in the subtitle string that you should highlight. Highlighting the matching text of a search completion is optional, but does provide helpful information to the user and is recommended.