On Sun, 19 Jun 2011 15:12:31 +1000, Graham Cox <graham....@bigpond.com> said:
>If I synthesize a property, is it possible to also directly invoke some other
>code when that property is set (other than the usual KVO)? That is, I need to
>do something like:
>
>
>@synthesize foo;
>
>
>- (void) setFoo:(id) newFoo
>{
> self.foo = newFoo;
>
> [self doSomethingElseAsWell];
>}
>
>
>Is this kind of thing possible? It looks to me as if the self.foo = line will
>incur an infinite loop. But if the property is synthesized, to what would I
>assign the new value?
I provide a good (I think) technique for doing this in my book (p. 275, example
12-5 "Overriding synthesized accessors"). You can also download sample code
here:
https://github.com/mattneub/Programming-iOS-4-Book-Examples/tree/master/p275b_overrideSynthesizedAccessors
m.
--
matt neuburg, phd = m...@tidbits.com, <http://www.apeth.net/matt/>
A fool + a tool + an autorelease pool = cool!
Programming iOS 4!
http://www.apeth.net/matt/default.html#iosbook_______________________________________________
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