Re: NSUserDefaultsController, when does value change?
Re: NSUserDefaultsController, when does value change?
- Subject: Re: NSUserDefaultsController, when does value change?
- From: Matt Neuburg <email@hidden>
- Date: Mon, 14 Jul 2008 09:34:48 -0700
- Thread-topic: NSUserDefaultsController, when does value change?
On Sun, 13 Jul 2008 21:29:56 -0700, "James W. Walker" <email@hidden>
said:
>I have a preferences dialog that I'm using with an
>NSUserDefaultsController instance, my first use of bindings, and it
>works. But I want to post a notification when a certain setting
>changes. In my method that shows the dialog, I record the old value
>of the setting. In my action method for the OK button, I send a save
>message to the defaults controller (the "applies immediately" option
>is off), send a synchronize message to the NSUserDefaults, then check
>the value of the setting and compare it to the old value. But the
>value has not changed! It obviously gets changed at some point,
>because the next time I bring up the dialog, the new value has is
>there. What am I missing?
What you're doing is unnecessarily complicated. Just use KVO to observe the
desired value within the standardUserDefaults. You get a notification
contining the old value and the new value. Welcome to the world of bindings.
m.
--
matt neuburg, phd = email@hidden, <http://www.tidbits.com/matt/>
A fool + a tool + an autorelease pool = cool!
One of the 2007 MacTech Top 25: <http://tinyurl.com/2rh4pf>
AppleScript: the Definitive Guide - Second Edition!
<http://www.amazon.com/gp/product/0596102119>
_______________________________________________
Cocoa-dev mailing list (email@hidden)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden