Instance Method

removeObserver:fromObjectsAtIndexes:forKeyPath:context:

Raises an exception.

Declaration

- (void)removeObserver:(NSObject *)observer fromObjectsAtIndexes:(NSIndexSet *)indexes forKeyPath:(NSString *)keyPath context:(void *)context;

Parameters

observer

The object to remove as an observer.

indexes

The index set.

keyPath

A key-path, relative to the array, for which observer is registered to receive KVO change notifications. This value must not be nil.

context

The context passed to the notifications.

Discussion

NSArray objects are not observable, so this method raises an exception when invoked on an NSArray object. Instead of observing an array, observe the to-many relationship for which the array is the collection of related objects.

See Also

Key-Value Observing

- removeObserver:forKeyPath:

Raises an exception.

- addObserver:toObjectsAtIndexes:forKeyPath:options:context:

Registers an observer to receive key value observer notifications for the specified key-path relative to the objects at the indexes.

- removeObserver:fromObjectsAtIndexes:forKeyPath:

Removes anObserver from all key value observer notifications associated with the specified keyPath relative to the array’s objects at indexes.

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