Question 220639 in IOS Swift Question posted in
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Ios swift – Timer counting up in iOS Live Activity

I’m wondering if it’s possible to create a simple seconds counter that is counting up in iOS Live Activities that would start from the provided unix timestamp and be relative to current date. For example: ’00:01′, ’00:02′, …

I know how to create a countdown timer, like so:

Text(Date(timeIntervalSinceNow: 60), style: .timer)

But I haven’t been successful in getting it to work the other way around, or finding much relevant information regarding this.

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2

Answers


  1. 0

    Please check this answer I hope it will solve your problem

    //
//  SampleStopWatch.swift
//

import UIKit

class SampleStopWatch:UIViewController {
    
    var timer:Timer?
    var startTime = Date()
   
    override func viewDidLoad() {
        super.viewDidLoad()
        view.backgroundColor = .white
        timer = Timer.scheduledTimer(timeInterval: 0.1, target: self, selector: (#selector(updateTimer)), userInfo: nil, repeats: true)
    }
    
    @objc func updateTimer() {
        let timeInterval =  Date().timeIntervalSince(startTime)
        let titleLabel = timeInterval.stringFromTimeInterval() // show this text on label
        //labeltoShow.text = titleLabel
        print("title label " + titleLabel)
    }
}
extension TimeInterval{
    
    func stringFromTimeInterval() -> String {
        
        let time = NSInteger(self)
        
        let ms = Int((self.truncatingRemainder(dividingBy: 1)) * 1000)
        let seconds = time % 60
        let minutes = (time / 60) % 60
        let hours = (time / 3600)
        
        return String(format: "%0.2d:%0.2d:%0.2d.%0.3d",hours,minutes,seconds,ms)
        
    }
}
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  2. 0

    As far as I know, there is nothing out of the box, you need to set this up yourself. So
    you could try something simple like using a Timer and two vars:

    struct ContentView: View {
    @State var secs = 0
    @State var mins = 0
    let timer = Timer.publish(every: 1, tolerance: 0.5, on: .main, in: .common).autoconnect()
    
    var body: some View {
        Text("(mins):(secs)")
            .onReceive(timer) { _ in
                if (secs == 59) {
                    secs = 0
                    mins += 1
                } else {
                    secs += 1
                }
            }
    }
}
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