Deleting an object in NSArrayController

Question

I have an NSTableView which gets its data from an NSArrayController and I need to delete the currently selected row. I know NSManagedObjectContext has a deleteObject: method but, I can't think of how to delete it from the NSArrayController.

score 3 · Accepted Answer · answered Jan 15 '10 at 03:03

3

Use the NSArrayController's remove: action.

answered Jan 15 '10 at 03:03

dreamlax

93,976
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score 1 · Answer 2 · answered Dec 04 '12 at 09:31

1

To remove programmatically

[NSArrayController removeObjectAtArrangedObjectIndex:NSInteger];

or

[NSArrayController removeObjectAtArrangedObjectIndexes:NSIndexset];

answered Dec 04 '12 at 09:31

NewStack

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score 0 · Answer 3 · answered Sep 10 '17 at 06:52

0

@NewStack's answer in Swift 3:

ArrayController.remove(atArrangedObjectIndex: Int)

answered Sep 10 '17 at 06:52

Jerry U

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score 0 · Answer 4 · answered Apr 17 '20 at 06:55

The answers from dreamlax, NewStack, styl3r are correct. But if you want to do this in code, here's the answer:

@IBOutlet var notesResultsController: NSArrayController!
@IBAction func deleteSelectedNote(_ sender: Any) {

    let selectedRow = tableView.selectedRow
    notesResultsController.remove(atArrangedObjectIndex: selectedRow)
}

Drag the NSArrayController onto your ViewController and hook up its outlet. Add a button to your interface and hook up its action to 'deleteSelectedNote'.

Deleting an object in NSArrayController

4 Answers4