Can't Call function in another class due to initialiser

Question

I am trying to call a function from TheTimer class from my MainClass class. However, in the TheTimer class there is a required init, and when I try and call the Start function from the TheTimer class (I call it from the MainClass class) it throws the error: Missing argument for parameter 'coder' in call

The TheTimer class is responsible for a UIView that is part of my storyboard.

TheTimer:

class TheTimer: UIView {

var timeLabel: UILabel

required init?(coder aDecoder: NSCoder) {

 timeLabel = UILabel()
 super.init(coder: aDecoder)
 let viewWidth = self.frame.size.width
 let viewHeight = self.frame.size.height
 timeLabel.frame = CGRect(x: 0, y: 0, width: viewWidth, height: viewHeight)
 timeLabel.text = "0"
 timeLabel.font = UIFont(name: "Arial", size: 45)
 timeLabel.textAlignment = NSTextAlignment.center
 self.addSubview(timeLabel)
 }

//MARK: Properties
var time: Double = 0.000

var timer = Timer()

func Start() {
    timer = Timer.scheduledTimer(timeInterval: 0.001, target: self, selector: #selector(countUp), userInfo: nil, repeats: true)
}

@objc func countUp() {
    time += 0.001


}

MainClass Class

import UIKit

class MainClass: UIViewController {
//MARK: Properties

@IBOutlet weak var answerLabel: UILabel!


//MARK: Go

@IBAction func startAll(_ sender: UIButton) {
    TheTimer().Start() //Throws error 'Missing argument for parameter 'coder' in call'

}

}

Answer 1

In your MainClass class, create a property for your TheTimer view, after that connect your TheTimer in story board with this IBOutlet. Finally, call theTimer.Start() instead of TheTimer().Start()

import UIKit

class MainClass: UIViewController {
//MARK: Properties

@IBOutlet weak var answerLabel: UILabel!

@IBOutlet weak var theTimer: TheTimer!


//MARK: Go

@IBAction func startAll(_ sender: UIButton) {
    theTimer.Start() // It will work fine

}