Cocoa Bindings + User Defaults Controller Trouble
Cocoa Bindings + User Defaults Controller Trouble
- Subject: Cocoa Bindings + User Defaults Controller Trouble
- From: Denis Defreyne <email@hidden>
- Date: Wed, 18 May 2005 22:19:08 +0200
Hello list.
Having some trouble with Cocoa Bindings combined with user defaults.
I have an array controller whose contentArray is bound to the Shared
User Defaults. I use my immutable-to-mutable value transformer because
NSUserDefaultsController's collections are immutable (at least in
Panther).
When the Object Class Name is set to NSMutableDictionary, everything
works; the contents of the array is written to the preferences plist.
So far so good.
However, when I change the Object Class Name to my own tiny class,
ALFavourite, I'm getting the following error when -add: is called:
*** -[NSUserDefaults setObject:forKey:]: Attempt to insert
non-property value '<CFArray 0x9d16950 [0xa01c00e0]>{type =
mutable-small, count = 2, values = (
0 : <CFDictionary 0x373230 [0xa01c00e0]>{type = mutable, count = 0,
capacity = 4, pairs = (
)}
1 : <ALFavourite: 0x9d16930>
)}' of class 'NSCFArray'.
I'm not sure what is going on here and how to fix it. My guess is that
since ALFavourite is a custom class, NSUserDefaultsController doesn't
know how to store that into the plist, which probably means that I need
some kind of value transformer to encode the ALFavourite instances.
I've tried messing around, to no avail. What am I overlooking?
Regards,
amon-re
--
mail: email@hidden
web: http://www.amonre.org/
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