How can I pause and resume NSTimer.scheduledTimerWithTimeInterval in swift?

Question

I\'m developing a game and I want to create a pause menu. Here is my code:

self.view?.paused = true

but NSTimer.scheduledTimerWithT

Answer 1

SWIFT3

Global Declaration :

 var swiftTimer = Timer()
 var count = 30
 var timer = Timer()
 @IBOutlet weak var CountDownTimer: UILabel!

viewDidLoad

override func viewDidLoad() { super.viewDidLoad() BtnStart.tag = 0 }

Triggered IBACTION :

@IBAction func BtnStartTapped(_ sender: Any) {
      if BtnStart.tag == 0 {
           BtnStart.setTitle("STOP", for: .normal)
           timer = Timer.scheduledTimer(timeInterval: 0.1, target: self, selector: #selector(ScoreBoardVC.update), userInfo: nil, repeats: true)

           BtnStart.tag = 1
      } else {

           BtnStart.setTitle("START", for: .normal)
           timer.invalidate()

           BtnStart.tag = 0
      }                    
 }

Function that Handles The things :

func update(){

      if(count > 0){
           let minutes = String(count / 60)
           let ConvMin = Float(minutes)
           let minuttes1 = String(format: "%.0f", ConvMin!)

           print(minutes)
           let seconds = String(count % 60)
           let ConvSec = Float(seconds)
           let seconds1 = String(format: "%.0f", ConvSec!)

           CountDownTimer.text = (minuttes1 + ":" + seconds1)
           count += 1
      }          
 }