How to get the current Title of a button in Swift? - swift

Question

What am I doing wrong?
I get this error:
let letterString = sender.title(for: .normal)! // Thread 1: Fatal error: Unexpectedly found nil while unwrapping an Optional value
when I tried to get the title of a button in swift like below:
import UIKit
class ViewController: UIViewController {
// My IBOutlets
#IBOutlet var treeImageView: UIImageView!
#IBOutlet var correctWordLabel: UILabel!
#IBOutlet var scoreLabel: UILabel!
// My Outlet Collection
#IBOutlet var letterButtons: [UIButton]!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
// Begin the round.
newRound()
}
var listOfWords = ["estufa", "nevera", "computadora", "empanada", "chuleta", "camarones", "brincar", "correr", "caminar", "tigre", "jirafa", "mono", "kisseemmee", "Tampa", "Orlando"]
let incorrectMovesAllowed = 7
let totalWins = 0
let totalLosses = 0
// My IBActions
#IBAction func letterButtonPressed(_ sender: UIButton) {
sender.isEnabled = false
let letterString = sender.title(for: .normal)! // Thread 1: Fatal error: Unexpectedly found nil while unwrapping an Optional value
let letter = Character(letterString.lowercased())
currentGame.playerGuessed(letter: letter)
updateUI()
}
var currentGame: Game!
func newRound() {
let newWord = listOfWords.removeFirst()
currentGame = Game(word: newWord, incorrectMovesRemaining: incorrectMovesAllowed, guessedLetters: [])
updateUI()
}
func updateUI() {
scoreLabel.text = "Wins: \(totalWins), Losses: \(totalLosses)"
treeImageView.image = UIImage(named: "Tree \(currentGame.incorrectMovesRemaining)")
}
}
// Game.swift file code:
import Foundation
struct Game {
var word: String
var incorrectMovesRemaining: Int
var guessedLetters: [Character]
mutating func playerGuessed(letter: Character) {
guessedLetters.append(letter)
if !word.contains(letter) {
incorrectMovesRemaining -= 1
}
}
}
I'm a newbie. This is my first program. I appreciate if you code the solution.

Answer 1

You can get the title of the UIButton using titleLabel property. Check the below code.
sender.titleLabel?.text
As the above code returns optional, you can use optional chain to safely get the string
if let titleLabel = sender.titleLabel {
let title = titleLabel.text
}
OR
You can also use the currentTitle property as below.
sender.currentTitle

Answer 2

You can use:
sender.titleLabel.text