Cannot assign to value: 'setText' is a method - swift

Question

Im using Xcode Version 11.0 (11A420a) and Swift to make an iPhone and Apple Watch app I have some code that has made a simple timer label and start and stop buttons and Id like to also have that on the Apple Watch.
In the Xcode viewcontroller.swift file I have this code and it works great.
var startTime = TimeInterval()
var startofTime = Date()
var timer:Timer = Timer()
var endTime: Date!
#IBOutlet weak var timerLabel: UILabel!
#IBOutlet weak var Start: UIButton!
#IBOutlet weak var Stop: UIButton!
#IBAction func startAct(_ sender: Any) {
alarmTime = Date()
startofTime = Date()
Start.isHidden = true
Stop.isHidden = false
if (!timer.isValid) {
let aSelector : Selector = #selector(ViewController.updateTime)
timer = Timer.scheduledTimer(timeInterval: 0.01, target: self, selector: aSelector, userInfo: nil, repeats: true)
startTime = Date.timeIntervalSinceReferenceDate
}
}
#IBAction func stopAction(_ sender: Any) {
progressView.progress = 0.0
progress.completedUnitCount = 1024
Start.isHidden = false
Stop.isHidden = true
endTime = Date()
timer.invalidate()
}
#objc func updateTime() {
let currentTime = Date.timeIntervalSinceReferenceDate
//Find the difference between current time and start time.
var elapsedTime: TimeInterval = currentTime - startTime
// print(elapsedTime)
// print(Int(elapsedTime))
//calculate the hours in elapsed time.
let hours = UInt8(elapsedTime / 3600.0)
elapsedTime -= (TimeInterval(hours) * 3600)
//calculate the minutes in elapsed time.
let minutes = UInt8(elapsedTime / 60.0)
elapsedTime -= (TimeInterval(minutes) * 60)
//calculate the seconds in elapsed time.
let seconds = UInt8(elapsedTime)
elapsedTime -= TimeInterval(seconds)
//find out the fraction of milliseconds to be displayed.
let fraction = UInt8(elapsedTime * 100)
//add the leading zero for minutes, seconds and millseconds and store them as string constants
let strMinutes = String(format: "%02d", minutes)
let strSeconds = String(format: "%02d", seconds)
let strFraction = String(format: "%02d", fraction)
//concatenate minuets, seconds and milliseconds as assign it to the UILabel
timerLabel.text = "\(hours):\(strMinutes):\(strSeconds).\(strFraction)"
}
When I tried to copy it to the watch InterfaceController.swift I got most of it done by just coping and pasting but I get a error about the label.
!Cannot assign to value: 'setText' is a method
Can anyone help me with the label for the watch. Something like this -
timerLabel.setText = "\(hours):\(strMinutes):\(strSeconds).\(strFraction)"
if I just put
timerLabel.setText((strFraction))
It works to display the milliseconds but id like to combine them all please.
If I do this
timerLabel.setText((strSeconds)(strFraction))
I get this error
!Cannot call value of non-function type 'String'
This is the full watch code so far, just need the last line
//
// InterfaceController.swift
// WatchKit Extension
//
// Created by Kurt on 3/10/19.
// Copyright © 2019 Kurt. All rights reserved.
//
import WatchKit
import Foundation
class InterfaceController: WKInterfaceController {
override func awake(withContext context: Any?) {
super.awake(withContext: context)
// Configure interface objects here.
}
override func willActivate() {
// This method is called when watch view controller is about to be visible to user
super.willActivate()
}
override func didDeactivate() {
// This method is called when watch view controller is no longer visible
super.didDeactivate()
}
var startTime = TimeInterval()
var startofTime = Date()
var timer:Timer = Timer()
var endTime: Date!
#IBOutlet weak var timerLabel: WKInterfaceLabel!
#IBAction func Start() {
startofTime = Date()
if (!timer.isValid) {
let aSelector : Selector = #selector(InterfaceController.updateTime)
timer = Timer.scheduledTimer(timeInterval: 0.01, target: self, selector: aSelector, userInfo: nil, repeats: true)
startTime = Date.timeIntervalSinceReferenceDate
}
}
#objc func updateTime() {
let currentTime = Date.timeIntervalSinceReferenceDate
//Find the difference between current time and start time.
var elapsedTime: TimeInterval = currentTime - startTime
// print(elapsedTime)
// print(Int(elapsedTime))
//calculate the hours in elapsed time.
let hours = UInt8(elapsedTime / 3600.0)
elapsedTime -= (TimeInterval(hours) * 3600)
//calculate the minutes in elapsed time.
let minutes = UInt8(elapsedTime / 60.0)
elapsedTime -= (TimeInterval(minutes) * 60)
//calculate the seconds in elapsed time.
let seconds = UInt8(elapsedTime)
elapsedTime -= TimeInterval(seconds)
//find out the fraction of milliseconds to be displayed.
let fraction = UInt8(elapsedTime * 100)
//add the leading zero for minutes, seconds and millseconds and store them as string constants
let strMinutes = String(format: "%02d", minutes)
let strSeconds = String(format: "%02d", seconds)
let strFraction = String(format: "%02d", fraction)
//concatenate minuets, seconds and milliseconds as assign it to the UILabel
timerLabel.setText(\(hours):\(strMinutes):\(strSeconds).\(strFraction)) !error
}
}

Answer 1

You can do it as,
timerLabel.setText("\(hours):\(strMinutes):\(strSeconds).\(strFraction)")

Answer 2

The setText method isn't available for the UILabel class in Swift.
Assuming you've created a setText extension method to the UILabel class,
you can do it this way:
timerLabel.setText("\(hours):\(strMinutes):\(strSeconds).\(strFraction)")

Answer 3

The setText method isn't available for the UILabel class in Swift. You can use text propriety of UILabel.
timerLabel.text = "\(hours):\(strMinutes):\(strSeconds).\(strFraction)"

Answer 4

For UILabel, text is a property & :setText is setter method for this property. So either use this property as:
timerLabel.text = "\(hours):\(strMinutes):\(strSeconds).\(strFraction)"
Or, use setter method as:
timerLabel.setText("\(hours):\(strMinutes):\(strSeconds).\(strFraction)")
But for iWatch, WKInterfaceLabel does not have any text property. You can only change the text at runtime using :setText method. For more info: see here