Swift iOS- How to hide label then make it appear after a certain time period

Question

I have a label that gets hidden when a button is pressed. After a certain time period like 60 secs I want the label to reappear. I'd assume I do that in viewDidAppear, How would i do that?

@IBOutlet weak var myLabel: UILabel!

override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
       //after 60 secs myLabel should reappear
       //self.myLabel.isHidden = false
    }


@IBAction func buttonTapped(_ sender: UIButton){
       self.myLabel.isHidden = true
}

Please Google before you ask :-) http://stackoverflow.com/questions/27990085/nstimer-how-to-delay-in-swift — Steffen Lund Andersen, Apr 05 '17 at 12:28
@ Steffen Lund Andersen It didn;t cross my mind but your right I should've just googled it. Thanks as it's the answer i was looking for :)! — Lance Samaria, Apr 05 '17 at 12:32

score 14 · Accepted Answer · edited Apr 05 '17 at 12:32

14

@IBAction func buttonTapped(_ sender: UIButton){
    self.myLabel.isHidden = true
    DispatchQueue.main.asyncAfter(deadline: .now() + 60) {
        self.myLabel.isHidden = false
    }
}

edited Apr 05 '17 at 12:32

Ahmad F

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answered Apr 05 '17 at 12:29

Max Pevsner

4,098
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Danh Huynh · Answer 2 · 2017-04-05T12:37:15.780

1

You can do this by scheduling a timer:

class ViewController: UIViewController {

    @IBOutlet weak var myLabel: UILabel!

    @IBAction func buttonTapped(sender: UIButton) {
        if !myLabel.isHidden {
            myLabel.isHidden = true
            Timer.scheduledTimer(timeInterval: 15.0, target: self, selector: #selector(showLabel), userInfo: nil, repeats: false)
        }
    }

    func showLabel() {
        myLabel.isHidden = false
    }
}

edited Apr 05 '17 at 12:37

answered Apr 05 '17 at 12:32

Danh Huynh

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I up voted your answer but I already accepted Max's. Thanks! :) – Lance Samaria Apr 05 '17 at 12:35
Be aware of each time you are tapping the button you'll add another timer schedule. – Ahmad F Apr 05 '17 at 12:35
@AhmadF Thanks! I updated the answer by cheking `myLabel.isHidden` – Danh Huynh Apr 05 '17 at 12:38

Swift iOS- How to hide label then make it appear after a certain time period

2 Answers2