I have this Error "this class is not key value coding-compliant for the key tittleLabel." How can I fix it?

Question

Here is all of my code, as said in the title there is an Error occurring when I try to run my app I'm not sure what I can do to fix it. How can I fix this I have tried a couple of things that have not worked.

import UIKit
import AVFoundation

class ViewController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
    }

   
    
    @IBOutlet weak var progressBar: UIProgressView!
       
    @IBOutlet weak var titleLabel: UILabel!
    
        let coffeeTimes = ["Decaf": 5]
    var timer = Timer()
    var player: AVAudioPlayer!
    var totalTime = 0
    var secondsPassed = 0
    
    @IBAction func coffeeSelected(_ sender: UIButton) {
    
    timer.invalidate()
        let coffee = sender.currentTitle!
        totalTime = coffeeTimes[coffee]!

        progressBar.progress = 0.0
        secondsPassed = 0
        titleLabel.text = coffee

        timer = Timer.scheduledTimer(timeInterval: 1.0, target:self, selector: #selector(updateTimer), userInfo:nil, repeats: true)
    }
    
    @objc func updateTimer() {
        if secondsPassed < totalTime {
            secondsPassed += 1
            progressBar.progress = Float(secondsPassed) / Float(totalTime)
            print(Float(secondsPassed) / Float(totalTime))
        } else {
            timer.invalidate()
            titleLabel.text = "check coffee"
            
            let url = Bundle.main.url(forResource: "alarm_sound", withExtension: "mixkit-warnin...uzzer-991(1)")
            player = try! AVAudioPlayer(contentsOf: url!)
            player.play()
        }
    }
}

Note that you did not set up the code in your question to format correctly. I edited your question to fix the code formatting (I enclosed all your code within 3 left ticks. ("```") — Duncan C, Dec 31 '21 at 22:48

score 4 · Accepted Answer · answered Dec 31 '21 at 22:46

That error almost always means that you have a broken IBOutlet link in a Storyboard or XIB. (The storyboard points to an outlet that doesn't exist in the class it points to.)

Given that the error mentions an IBOutlet called "tittleLabel" and your code has an outlet called "titleLabel", that seems like a likely cause of your crash.

I suggest opening the Storyboard that contains your ViewController class, and examining all the outlets carefully using the connections inspector. If you find the bad one, delete it and then control-drag from your code back to the outlet in the storyboard to connect the correct outlet.

Taimoor Arif · Answer 2 · 2022-10-04T06:42:28.670

1

This type of error comes when there is broken connection in storyboard or XIB file. In storyboard or Xib, select your view controller and check your connection inspector, just like in the following picture:

Check here the connection of titleLabel, first remove the connection and again make its connection with your swift class file.

Hope this works.

edited Oct 04 '22 at 06:42

answered Jan 01 '22 at 10:38

Taimoor Arif

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I have this Error "this class is not key value coding-compliant for the key tittleLabel." How can I fix it?

2 Answers2