How can I show a new view controller after 3 seconds

Question

I want to show a new ViewController after I clicked on a button, but not directly. After clicking the button I want to wait 3 seconds an after the 3 seconds I want the new ViewController

Answer 1

Add delay on click of button:

DispatchQueue.main.asyncAfter(deadline: .now() + 3) {
   // Your code with navigate to another controller
}

Answer 2

You can use a scheduled timer to fire off a function after a given timeInterval.

let timer = Timer.scheduledTimer(timeInterval: 3, target: self, selector: #selector(showVC), userInfo: nil, repeats: false)


@objc func showVC() {
    //navigate to your desired VC
}

Answer 3

DispatchQueue.main.asyncAfter(deadline: .now() + 3) { in [weak,self]

// Your code with navigate to another controller // weak self becouse may be your current viewcontroller is dinit

}

Answer 4

Inside the button action create a timer:

@IBAction func Button(_ sender: Any) {
_ = Timer(timeInterval: 3, target: self, selector: #selector(showVC), userInfo: nil, repeats: false)
}

Then add an objective-C selector that will present the next View Controller when called by the timer 3 seconds later.

@objc func showVC() {
    let myVC = self.storyboard?.instantiateViewController(withIdentifier: "NextViewController") as! ViewController
    self.present(myVC, animated: true, completion: nil)
}