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KVO on NSSlider not observing
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KVO on NSSlider not observing


  • Subject: KVO on NSSlider not observing
  • From: Aaron Wallis <email@hidden>
  • Date: Fri, 12 Dec 2008 23:36:06 +1100

Hi there,

I'm having issues setting up bindings via code (rather than in IB)

I've got a NSObject subclass which is being used as the controller, and a NSView subclass which has a few controls like NSSliders.
In the NSObject I have the following code:


- (void)setupSliders {
[controlsView.tempSlider addObserver:self forKeyPath:@"value" options:NSKeyValueObservingOptionNew context:NULL];
}


- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
NSLog(@"It's Changed!!");
[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
}


When I build and run the controls are rendered as expected however when I interact I don't get the "It's changed" message.

Any ideas where I could be going wrong?

Cheers
- Az
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