Hi ! I must have killed the gods of array bindings in a previous life, but I'm pulling my hair (or whatever's left), and, even though I thought I got I, well, I really don't.
I'm trying to do something quite simple. I'd like to display a series of images with a label inside an NSCollectionView. Whatever I do, the collectionview remains empty (even though I can see the nice checkered background (since I set up default layout rows/cols) which reflects the size of my customized item view). In a nib file that has a couple windows, the File's Owner is an NSWindowController of mine. Right now, it concentrates most of the controlling. The NSMutableArray which contains the images and strings is a property of the windowController. I created an NSArrayController, bound to the File's Owner, with the model key path to the name of my array (checked spelling etc). I created an NSCollectionView and set it up like this : - content is bound to the arrayController, and controller key is "arrangedObjects". - the item prototype is the NSCollectionViewItem that got created automatically. - for the NSCollectionViewItem, its view is the auto-created view that I customized to add an NSImageView and a label. Now, I tried with and without setting the fields in the "Attributes" inspector. Since the View is inside the same nib as the NSCollectionViewItem, I think I can leave this blank, since the outlet connects them already. - for the view itself (that should be drawn inside the collectionview), the NSTextField (not the cell) is bound to the Collection View Item, and the model key path is set to "representedObject._imageUID". (_ImageUID is a property of the content of my NSMutableArray. To make it short, I add simple class instances that have two fields, NSImageView *_image, NSString *_imageUID) - the NSImageView is bound the same way, but to representedObject._image. >From what I read all over the net, this should be one way to do it... So, now on to the model side. Maybe my array isn't observed as being updated. I tried a few things... with and without declaring the NSMutableArray as a property, and assigning it through a setter in windowControllerDidLoadNib. I use insertObject: atIndex: to add elements to the array. And I made sure that I add them from the main thread (performOnMainThread or similar calls when necessary). I traced the content of the NSCollectionView from the debugger, and it seems that it doesn't see any of that. But maybe I shouldn't worry about what I see ? The collectionView shows : _content has 0 objects _displayedItems has 0 objects I tried setting the NSCollectionView's content by hand, (with setContent: myArray) but then I get lots of weird warnings : *Could not connect the action orderFrontStandardAboutPanel: to target of class NSCollectionViewItem* *Could not connect the action hide: to target of class NSCollectionViewItem* Could not connect the action terminate: to target of class NSCollectionViewItem *Could not connect the action hideOtherApplications: to target of class NSCollectionViewItem* *Could not connect the action unhideAllApplications: to target of class NSCollectionViewItem* * * And I also tried to send setNeedsDisplay: YES to the collectionView, just in case... So, if anyone has any suggestion, I'd be really glad to hear them. I really don't understand what goes wrong. Somehow, this technology, "It simply doesn't work"... :) thanks ! _______________________________________________ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
