How to program delay?

Question

I have two view controllers.

I made imageview (in the Gif file) in first VC. After 5seconds, I want page pass to second vc. First VC code is like this:

class LemonVC: UIViewController {

    @IBOutlet weak var LemonGif: UIImageView!
    override func viewDidLoad() {
        super.viewDidLoad()


        LemonGif.loadGif(name: "sufoo")

    //        DispatchQueue.main.asyncAfter(deadline: .now() + 
    .seconds(4), execute: {
    //
    //        })
        // Do any additional setup after loading the view.
    }

First VC name is LemonVC

Second VC name is SecondVC

I'd probably not start it in viewDidLoad, but might consider viewDidAppear for starters — MadProgrammer
– MadProgrammer, Commented Apr 19, 2018 at 11:11
I think the other command you're looking for is performSegue ... assuming you actually named the segue's between you view controllers — MadProgrammer
– MadProgrammer, Commented Apr 19, 2018 at 11:13

MadProgrammer · Accepted Answer · 2018-04-23 20:11:34Z

1

One possibility is to use a segue between the first and second controller to define a navigation path (drag from the "yellow" dot in the first controller onto the second controller. This example uses a show kind)

Make sure you give it an identifier name, you need this in your code.

I would probably use viewDidAppear over viewDidLoad, at least it means that the view has transitioned to the screen.

Then, all you need to do is use UIViewController#performSegue to execute the segue, which will present the next controller

override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(animated)

    DispatchQueue.main.asyncAfter(deadline: .now() + .seconds(5), execute: {
        self.performSegue(withIdentifier: "skipTo", sender: self)
    })
}

edited Apr 23, 2018 at 20:11

answered Apr 19, 2018 at 11:22

MadProgrammer

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1 Comment

MadProgrammer Over a year ago

Glad it could help - just remember, there's always more then one way to skin a cat - this is just one way to do what you want ;)

Andrew · Accepted Answer · 2018-04-19 11:12:22Z

0

Try this:

  DispatchQueue.main.asyncAfter(deadline: .now() + .seconds(5), execute: {
// go some where
// example
let storyBoard = UIStoryboard(name: "Main", bundle: nil)
        let introRootVC = storyBoard.instantiateInitialViewController() // it's main controller, if you want to another create Story board ID 
        self.present(introRootVC!, animated: true, completion: nil)
})

You can change delay, seconds(5) <- here

answered Apr 19, 2018 at 11:12

Andrew

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