A method identified as deprecated has been superseded and may become unsupported in the future.
Configures the receiver to post change notifications for a given property if any of the properties specified in a given array changes. (required) (Deprecated in Mac OS X v10.5 and later. You should use the method keyPathsForValuesAffectingValueForKey: instead.)
+ (void)setKeys:(NSArray *)keys triggerChangeNotificationsForDependentKey:(NSString *)dependentKey
The names of the properties upon which the value of the property identified by dependentKey depends.
The name of a property whose value depends on the properties specified by keys.
Invocations of will- and did-change KVO notification methods for any key in keys will automatically invoke the corresponding change notification methods for dependentKey. The receiver will not receive willChange/didChange messages to generate the notifications.
Dependencies should be registered before any instances of the receiving class are created, so you typically invoke this method in a class's initialize method, as illustrated in the following example.
+ (void)initialize |
{ |
[self setKeys:[NSArray arrayWithObjects:@"firstName", @"lastName", nil] |
triggerChangeNotificationsForDependentKey:@"fullName"]; |
} |
NSKeyValueObserving.hLast updated: 2009-11-13