iOS_Back_8

Multi-Threads using Timer

1. code

    //
    //  ViewController.swift
    //  KatesThreadsApp
    //
    //  Created by KatesAndroid on 2021/1/28 AM 10:15
    //  multi-threads using Timer class
   
    import UIKit
   
    class ViewController: UIViewController {
   
        override func viewDidLoad() {
            super.viewDidLoad()
   
            //Timer.scheduledTimer(timeInterval: <#T##TimeInterval#>, invocation: <#T##NSInvocation#>, repeats: <#T##Bool#>)
   
            Timer.scheduledTimer(withTimeInterval: 5.0, repeats: true){
   
                (t) in
                self.timeCounter()
   
            }
   
        }
   
        func timeCounter(){
            let showTime = DateFormatter()
            showTime.dateFormat = "hh:mm:ss"
            let timeString = showTime.string(from: Date())
            print(timeString)
        }
   
    }
   

2. output

   

3. iOS' tip (log)

    NSLog("")
    
    sleep()