When moving a slider in a preference panel I sometimes get an error.
2010-03-19 01:46:49.860 MyApp[4249:10b] Error setting value for key
path values.ABRadius of object <NSUserDefaultsController:
0x169c00>[applies immediately: YES] (from bound object <NSSlider:
0x6707de0> with object ID 59 in Nib named ABPreferencePanel.nib):
[<NSCFType 0x168ec0> valueForUndefinedKey:]: this class is not key
value coding-compliant for the key radius.
2010-03-19 16:55:16.415 MyApp[5710:10b] Error setting value for key
path values.ABRadius of object <NSUserDefaultsController:
0x1696e0>[applies immediately: YES] (from bound object <NSSlider:
0x622f790> with object ID 59 in Nib named ABPreferencePanel.nib):
[<NSKeyValueSlowSetter 0x168970> valueForUndefinedKey:]: this class is
not key value coding-compliant for the key radius.
Nowhere in the preference panel or in any class used in panel nib do I
use the key "radius". The slider uses the key "ABRadius".
The factory defaults are registered like this in an app controller.
// ABAppController
NSString * const ABRadiusKey = @"ABRadius";
+ (void)initialize
{
// Register factory defaults.
NSMutableDictionary *defaultValues = [NSMutableDictionary
dictionary];
[defaultValues setObject:[NSNumber numberWithInt:12]
forKey:ABRadiusKey];
[[NSUserDefaults standardUserDefaults]
registerDefaults:defaultValues];
}
I do have a class which is completely external to the preference panel
nib which binds a radius property to the sharedUserDefaultsController.
// ABExternalClass
- (id)init
{
if (![super init])
return nil;
[self bind:@"radius"
toObject:[NSUserDefaultsController sharedUserDefaultsController]
withKeyPath:@"values.ABRadius"
options:nil];
return self;
}
The default implementation of bind appears to work just fine. I only
want to propagate changes from the controller to the ABExternalClass
radius property.
Anyway, I can not figure out why I am getting the
valueForUndefinedKey: error.
--Richard
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