Hi.
Is this any better? See bewlo, and in addition: Did it work? It
shouldn't have worked :-/
On NSManagedObject side:
According to Apple the initWithEntity should not be overridden (http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/CoreData/Articles/cdCreateMOs.html
)
"
you are discouraged from overriding
initWithEntity:insertIntoManagedObjectContext:; instead, Core Data
provides several other means of initializing values—these are
described in “Object Life-Cycle—Initialization and Deallocation.”"
The blue links to: “Object Life-Cycle—Initialization and Deallocation.”
So add it to awakeFromInsert or / and awakefromFetch
On observee side:
[performSelector...] can't work and you should get a warning when
compiling. Take these warnings seriously and try to understand them,
because they exist for a good reason!
[self performSele...] for example would work, even so [self
selectorname] is more simple to read.
You will be in need to remove the observer again - that depends on
different aspects. I am referring again to the mailing list archive.
Volker
Am 07.10.2009 um 17:55 schrieb Joshua Garnham:
Hi,
Here's what I have done, I have subcalssed NSManagedObject and added
the following code …
- (id)initWithEntity:(NSEntityDescription *)entity
insertIntoManagedObjectContext:(NSManagedObjectContext *)context {
[self addObserver:[NSApp delegate] forKeyPath:@"name"
options:NSKeyValueObservingOptionNew context:nil];
}
… And in my App Delegate …
- (void)observeValueForKeyPath:(NSString *)keyPath
ofObject:(id)object
change:(NSDictionary *)change
context:(void *)context {
[performSelector:@selector(doSomething:)];
}
Is this any better?
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