How to save the high score into the label?

Question

For some reason if my score is greater than highScore it is not executing my function. Any help is much appreciated.

Here's my code:

import UIKit
import AVFoundation
struct Question {
    var Question : String!
    var Answers : [String]!
    var Answer : Int!

}

class ViewController: UIViewController {

    @IBOutlet weak var highScoreLbl: UILabel!
    @IBOutlet var Buttons: [UIButton]!
    @IBOutlet weak var QLabel: UILabel!
    @IBOutlet weak var Label: UILabel!
    @IBOutlet weak var incorrectLabel: UILabel!
    @IBOutlet weak var timerLabel: UILabel!
    @IBOutlet weak var theEnd: UILabel!
    @IBOutlet weak var continueButton: UIButton!

    var scoreLbl = UILabel()

    var score = Int()

    var Questions = [Question]()

    var QNumber = Int()

    var AnswerNumber = Int()

    var wrongAnswers = Int()

    var highScore = 0

    override func viewDidLoad() {
        super.viewDidLoad()


        Questions = [Question(Question: "What is the Biggest Hit of Bing Crosby?" , Answers: ["Swinging on a Star", "Now is the Hour", "White Christmas", "Beautiful Dreamer"], Answer: 2),
        Question(Question: "What is Elvis Presely's Middle Name?", Answers: ["Aaron", "Micheal", "George", "Matthew"], Answer: 0),
        Question(Question: "How Many Oscars did Titanic win?", Answers: ["5", "7", "10", "11"], Answer: 3),
        Question(Question: "From which country did Pitta Bread originate?", Answers: ["Spain", "France", "Greece", "Russia"], Answer: 2),
        Question(Question: "What is the largest living creature on Earth?", Answers: ["Whale", "Shark", "Sea Turtle", "Alligator"], Answer: 0),
        Question(Question: "What does ATM stand for?", Answers: ["Automatic Treasure Machine", "Automatic Tax Machine", "Anti Tax Machine", "Automatic Teller Machine"], Answer: 3),
        Question(Question: "What's the world's second largest French speaking city?", Answers: ["Paris", "Montreal", "Versailles", "Québec"], Answer: 1),
        Question(Question: "What Country is the largest producer of Olive Oil?", Answers: ["Italy", "France", "Greece", "Spain"], Answer: 3),
        Question(Question: "How long is the Great Wall of China?", Answers: ["3200 miles", "4000 miles", "2000 kilometers", "4500 miles"], Answer: 1),
        Question(Question: "Who is on the 10 dollar bill?", Answers: ["George Washington", "Thomas Jefferson", "Alexander Hamilton", "John Adams" ], Answer: 2),
        Question(Question: "How many World Series did Yogi Berra win as a player?", Answers: ["11", "10", "5", "7" ], Answer: 1),
        Question(Question: "Which three countries hosted the Winter Olympics during the 1990's?", Answers: ["Norway, France, Russia", "US, Sweeden, Canada",

            "Japan, Canada, Germany", "Slovenia, France, South Korea" ], Answer: 0),]



        scoreLbl = UILabel(frame: CGRectMake(35, 45, 77, 45))
        scoreLbl.textAlignment = NSTextAlignment.Center
        scoreLbl.text = "-1"
        self.view.addSubview(scoreLbl)

        PickQuestions()


    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    func PickQuestions(){

        score++
        scoreLbl.text = "\(score)"

        if Questions.count > 0{
            QNumber = random() % Questions.count
            QLabel.text = Questions[QNumber].Question

            AnswerNumber = Questions[QNumber].Answer

            for i in 0..<Buttons.count{
                Buttons[i].setTitle(Questions[QNumber].Answers[i], forState: UIControlState.Normal)
            }

            Questions.removeAtIndex(QNumber)
        }
        else{

            theEnd.text = "You Win!"
            theEnd.alpha = 1
        }



        incorrectLabel.alpha = 0

    }

    func saveHighScore(){

        if score >= highScore {
            highScore == score
            highScoreLbl.text = "High Score: " + String(highScore)

        }
        else{}

    }


    @IBAction func Btn1(sender: AnyObject) {
        if AnswerNumber == 0{
            PickQuestions()
        }
        else{
            incorrectLabel.text = "You are incorrect!"
            incorrectLabel.alpha = 1
            score--
            scoreLbl.text = "\(score)"
        }

    }
    @IBAction func Btn2(sender: AnyObject) {
        if AnswerNumber == 1{

            PickQuestions()
        }
        else{
            incorrectLabel.text = "You are Incorrect!"
            incorrectLabel.alpha = 1
            score--
            scoreLbl.text = "\(score)"
        }
    }
    @IBAction func Btn3(sender: AnyObject) {
        if AnswerNumber == 2{

            PickQuestions()
        }
        else{
            incorrectLabel.text = "You are Incorrect!"
            incorrectLabel.alpha = 1
            score--
            scoreLbl.text = "\(score)"
        }
    }
    @IBAction func Btn4(sender: AnyObject) {
        if AnswerNumber == 3{

            PickQuestions()
        }
        else{
            incorrectLabel.text = "You are Incorrect!"
            incorrectLabel.alpha = 1
            score--
            scoreLbl.text = "\(score)"
        }
    }
}

Answer 1

highScore == score should be highScore = score, otherwise highScore is always 0

looks like saveHighScore is never getting called also

 func PickQuestions(){

    score++
    saveHighScore()   <--- need to do things like this when score is updated
    scoreLbl.text = "\(score)"

To save:

//How to save result, do this after the highscore is set 
let defaults = NSUserDefaults.standardUserDefaults()
defaults["highScore"] = highScore

//How to read saved result, do this in your viewdidload
let defaults = NSUserDefaults.standardUserDefaults()
if let hs = defaults["highScore"] 
{
    highScore = hs
}

Now you may have to cast to the correct type to get this to work, but the basic idea is outlined above