I have an IBOutlet that I have linked to from the storyboard
@IBOutlet var creeLigueBouton: UIBarButtonItem!
and I want to make it disappear if a condition is true
if(condition == true)
{
// Make it disappear
}
Use the property enabled and tintColor
let barButtonItem:UIBarButtonItem? = nil
if isHidden{
barButtonItem?.enabled = false
barButtonItem?.tintColor = UIColor.clearColor()
}else{
barButtonItem?.enabled = true
barButtonItem?.tintColor = nil
}
Do you really want to hide/show creeLigueBouton
? It is instead much easier to enable/disable your UIBarButtonItems. You would do this with a few lines:
if(condition == true) {
creeLigueBouton.enabled = false
} else {
creeLigueBouton.enabled = true
}
This code can even be rewritten in a shorter way:
creeLigueBouton.enabled = !creeLigueBouton.enabled
Let's see it in a UIViewController subclass:
import UIKit
class ViewController: UIViewController {
@IBOutlet weak var creeLigueBouton: UIBarButtonItem!
@IBAction func hide(sender: AnyObject) {
creeLigueBouton.enabled = !creeLigueBouton.enabled
}
}
If you really want to show/hide creeLigueBouton
, you can use the following code:
import UIKit
class ViewController: UIViewController {
var condition: Bool = true
var creeLigueBouton: UIBarButtonItem! //Don't create an IBOutlet
@IBAction func hide(sender: AnyObject) {
if(condition == true) {
navigationItem.rightBarButtonItems = []
condition = false
} else {
navigationItem.rightBarButtonItems = [creeLigueBouton]
condition = true
}
}
override func viewDidLoad() {
super.viewDidLoad()
creeLigueBouton = UIBarButtonItem(title: "Creer", style: UIBarButtonItemStyle.Plain, target: self, action: "creerButtonMethod")
navigationItem.rightBarButtonItems = [creeLigueBouton]
}
func creerButtonMethod() {
print("Bonjour")
}
}
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