On Feb 2, 2009, at 11:19 AM, Chris Anderson wrote:
Ok, upon further investigation it would seem that the objects are
initializing in an order I don't understand. I verified this by
overriding the mouseDown method and getting the same results. I
also tried invoking awakeFromNib but that too did not work. I tried
a performSelector:withObject:afterDelay within the awakeFromNib and
called a separate method to get the array controller to respond.
awakeFromNib was invoked twice on application start...the first time
the array controller responds successfully. The second time, where
the datepicker control in the nib is actually loaded, it does not
respond.
- (void)awakeFromNib
{
[self performSelector: @selector(prepareOutlets)
withObject: nil
afterDelay: 1.0];
}
-(void)prepareOutlets
{
NSLog(@"array count: %i", [[myArrayController arrangedObjects]
count]);
}
Log...
2009-02-02 11:04:05.375 [myapp] array count: 1 (I think this is the
object of the subclass I've created in IB)
2009-02-02 11:04:05.385 [mhapp] array count: 0 (NSDatePicker control
is calling this one..verified)
I must be missing something fundamental but I have no idea what.
Thanks,
As Keary said, the first thing I would do is validate if
myArrayController, or the result from [myArrayController
arrangedObjects] is nil or not. This should be trivial to do by
placing a breakpoint on the said method and inspecting the variable
when the breakpoint is hit. Then, it's more like a choose your own
adventure book: if the variable is nil, find out why and when. If the
variable isn't nil, found out why your array controller is returning 0
items. This probably involves looking at what it is hooked up to and
placing breakpoints on the methods that return results.
corbin
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