Re: Attack of the Nils!

FROM : mw
DATE : Tue Dec 31 21:46:04 2002

On 12/30/02 5:51 PM, "Marcel Weiher" <<email_removed>> wrote:

>>  and neither method has any private variables that have the name
>> 'controller'. However, I did test your theory, and the pointer was
>> still
>> <nil> when it got to -mouseExit. Any other ideas?
>
> 1.    Make sure that 'self' is the same object in both cases, by
> printing its address.
> 2.    Don't use the debugger to check these things, use NSLog()
>

Ah hah! That was the problem! The memory address of self was different in
the two cases. Upon further inspection, I found out that, even though the
rollover button object was contained in the nib file (and therefore had
already been allocated and initialized), I was creating ANOTHER instance of
the class in my code. The first time execution was given to a method in the
class, it was in the -awakeFromNib method (in the instance of the class in
the nib file). The second time, it was its own method, so it was in the one
I created. With this knowledge, I defeated the problem :-).

Thanks for everyone's help! It seems that a lot of you were hinting towards
a dual instance of the class.

Thanks again,
mw
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