Hi All,
I have a view class that observes changes in a model class's array via KVO.
Unfortunately - when ever the array is updated - the updates are sent to the
view one at at a time.
In my model class I have the following line:
NSMutableArray * eventsArrayProxy = [self
mutableArrayValueForKey:@"events"];
[eventsArrayProxy addObjectsFromArray:appointments];
Which naturally causes the following method in my view class to be invoked:
-(void) observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object
change:(NSDictionary *)change context:(void *)context
My problem is that observeValueForKeyPath.. is invoked once for each and every
single item in the appointments array (the array being added) - rather than
once for all of them. Is this standard behavior? And is there a way to have
it call observeValueForKeyPath.. one time for all the objects being added?
In my case - I am sometimes adding as much as a thousand or more objects - so
it is a severe performance issue right now. If this is the only way KVO works
for arrays then I will have to find another way around it - but I'm hopeful
perhaps there's some way this can be done.
Thanks for your help,
Mazen Abdel-Rahman
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