NSButton state not changing

Question

The following code works perfect in my sandbox:

@IBAction func filterClicked(sender: NSButton) {
  println(sender.state)
  if let clickEvent = NSApp.currentEvent! {
    if Int(clickEvent.modifierFlags.rawValue) & Int(NSEventModifierFlags.ControlKeyMask.rawValue) != 0 {
      if sender.state == NSOffState {
        sender.state == NSOnState
      }
    }
  }
  println(sender.state)
}

The connected button is an On-Off button. So when it's on and I ctrl-click it it will stay on.

Unfortunately in my app where I really need this it does not work. I checked that in both sandbox and prod app the bindings/settings are identically for both buttons. The debugger shows that

        sender.state == NSOnState

is simply not performed. state stays NSOffState. Gnawing my keyboard did not help. Any idea?

score 6 · Accepted Answer · edited Apr 02 '19 at 12:00

6

You are not assign any value to the button state.

sender.state = NSOnState

Update for Swift 4.2

sender.state = NSControl.StateValue.on

edited Apr 02 '19 at 12:00

Ashutosh Shukla

358
5
14

answered Mar 26 '15 at 12:00

Superolo

98
6

OMG! I sent that as bug report that the compiler should issue a warning in this case. Thanks a bunch! – qwerty_so Mar 26 '15 at 12:37

score 1 · Answer 2 · edited Feb 17 '18 at 10:49

1

Changing state of a Radio Button (Check state) for swift 4:

@IBOutlet weak var checkedButton: NSButton!

checkedButton.state = NSControl.StateValue.off // State = off

checkedButton.state = NSControl.StateValue.on  // State = on

edited Feb 17 '18 at 10:49

MAhipal Singh

4,745
1
42
57

answered Feb 17 '18 at 10:24

Андрей

11
4

They change the syntax more often than their underwear :-/ – qwerty_so Feb 17 '18 at 12:43

score 0 · Answer 3 · answered Dec 07 '17 at 18:36

I know this already has an accepted answer, but sharing my scenario in case it trips up someone else:

I had the same issue where I couldn't programmatically set the state for my button in a custom table view cell. MY issue, is that I was trying to set the state when my table first created the cell. Instead, I had to make sure to override the layout method in my custom cell and set the state there.

score 0 · Answer 4 · answered Feb 01 '21 at 05:11

I had this in a CollectionViewItem... I had an outlet for the favouriteButton...

class PictureCollectionViewItem: XCollectionViewItem
{
    @IBOutlet var thumbnailView: NSImageView!
    @IBOutlet var tagsView: NSTextField!
    @IBOutlet var favouriteButton: NSButton!
    ... 
}

I had linked the outlet to the Collection View Item object

but NOT linked it to the File's Owner...

As soon as I linked it to the File's Owner as well, ... it all worked.

NSButton state not changing

4 Answers4