Hi all, I feel this should be a very simple question, but I am struggling with it - the tutorials and online info I can find is either 5 years out of date or seem to imply that I am doing everything right!
In my code I have an NSMutableArray of “message” objects, each with a number of properties defined on them. In the GUI this is wired up to a table view, via an NSArrayController. That all seems to work fine, and the object properties are listed in the table[*]. Underneath the table I want to display some more detailed information about the currently-selected object in the table. I would have thought that I could do this just by binding the relevant NSTextField to MessageArray.selection.myExtendedInformationProperty. This works up to a point, in that I do see text appearing in the text field. However it does not update when the selection in the table view changes, which is what I had intended to happen. This is basically what happens on p18 of this tutorial (http://web.stanford.edu/class/cs193e/Downloads/CocoaBindingsTutorial.pdf), and (although it’s referring to a much older version of IB) I think I have done what they do. Can anyone suggest what I may have omitted to do here, or why my approach is wrong? Thanks for any advice. Cheers Jonny. [*] One slight glitch - if I add an object to the NSMutableArray then it does not immediately show up in the table, I have to call will/didChangeValueForKey on the property that returns the array. I don’t know if that is expected behaviour (maybe I should be adding via the array controller somehow?). This is not a problem, but I mention it for completeness, just in case it’s indicative of something funny that is going on that I don’t fully appreciate. _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
