This sounds like that selection from nstableview is not properly linked. Make sure that selectionIndex (or something similar) from table is linked to arraycontroller
On Tue, Sep 23, 2014 at 6:15 PM, Jonathan Taylor < jonathan.tay...@glasgow.ac.uk> wrote: > 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 - the tutorials and online info I can find is either 5 years out of date or 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/xhruso00%40gmail.com > > This email sent to xhrus...@gmail.com _______________________________________________ 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
