CODEWITHSUNDEEP
iosswiftuibutton
xuxu
xuxu

Reputation: 823

Update Button Title

I have a simple button which is initially labelled with the emoji 🦁, and all that I'm trying to do is to remove the emoji once the button is clicked.

import UIKit

class ViewController: UIViewController {

    @IBAction func touchCard(_ sender: UIButton) {
        flipCard(withEmoji: "🦁", on: sender)
    }

    func flipCard(withEmoji emoji: String, on button:UIButton){
        if button.currentTitle == emoji {
            button.setTitle("", for: UIControl.State.normal)
            print("Removed emoji")
        }
    }

}

As I step through the code, the statement button.setTitle("", for: UIControl.State.normal) gets executed, however the emoji does not disappear although it does appear faded, after the button is clicked.

Edit: The title does get updated, but it takes a few (8-10) seconds to do so. Replacing the emoji with another emoji is almost instantaneous though! What could be causing this and how do I fix this?

PS: I'm following along the CS193P lecture (Lecture 1) here.

Upvotes: 0

Views: 131

Answers (3)

Ahemadabbas Vagh
Ahemadabbas Vagh

Reputation: 494

You can simply replace your function like below function that i have added for you.

func flipCard(withEmoji emoji: String, on button:UIButton){

        if button.currentTitle == emoji {

            button.setTitle("", for: .normal)
            button.setTitle("", for: .selected)
            button.setTitle("", for: .disabled)

            print("Removed emoji")
        }

    }

Hope this way may help you.

Upvotes: 0

Renzo Tissoni
Renzo Tissoni

Reputation: 759

If the button appears faded, it might be disabled. If you set the title for the disabled state and execute button.setTitle("", for: UIControl.State.normal), nothing will happen to the title for UIControl.State.disabled.

Check if button.setTitle("", for: UIControl.State.disabled) does the trick.

Upvotes: 0

rmaddy
rmaddy

Reputation: 318814

You probably want button.title(for: .normal) instead of button.currentTitle.

Upvotes: 1

Related Questions