Instance Property

identifier

A unique identifier for the labeled value object.

Declaration

iOS, Mac Catalyst, watchOS
@property(readonly, copy, nonatomic) NSString *identifier;
macOS
@property(readonly, copy, atomic) NSString *identifier;

Discussion

It is recommended that you use the identifier when searching for a previously known labeled value object in a re-fetched contact. The identifier can be persisted between the app launches.