On May 25, 2010, at 10:54 AM, Kyle Sluder <kyle.slu...@gmail.com> wrote:
This sounds off& you're deregistering obeservers in your observee's
-dealloc?
In general this would sound off to me too, on the principle that observees
normally don't know who their observers are. �It�only makes sense to me if the
observee added the observers to itself in the first place, on the principle
that whoever adds an observer should take it away.
On May 25, 2010, at 09:49 AM, Roland King <r...@rols.org> wrote:
That's not it then, in Snow Leopard there was a change so that message was only
emitted at the end of the dealloc() method instead of at the start which
allowed you to deregister your observers in dealloc() and not get this error.
In Leopard and in (I think still in) iPhone OS you get the message at the start
of dealloc whether you are just about to deregister your observers or not.
Thanks for this -- I vaguely remember something about the change in Snow
Leopard but it hadn't clearly registered in my mind.
I had an idea for a perverse hack to deal with the problem in Leopard, which
was to to override release and do the deregistering there if the retainCount is
1, thus sneaking in the deregistering just before dealloc but no sooner.
--Andy
On 25-May-2010, at 9:33 PM, Gideon King wrote:
10.6.3
On 25/05/2010, at 11:17 PM, Roland King wrote:
what version of what operating system are you using?
On 25-May-2010, at 9:14 PM, Gideon King wrote:
Hi, I'm getting the message:
An instance 0x11d0ce4b0 of class NMGeneralPrintAccessoryController was deallocated
while key value observers were still registered with it. Observation info was leaked,
and may even become mistakenly attached to some other object. Set a breakpoint on
NSKVODeallocateBreak to stop here in the debugger. Here's the current observation
info: <all my observers>
But I have put a breakpoint on my dealloc method, and in there, I do deregister
for those notifications. Dealloc is called, and I did check that it was the
same object, and all the calls to deregister are there. So I don't know how it
could *not* be removing the observers.
Any clues where to look?
Thanks
Gideon
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