swift - 如何检查来自不同函数的两个变量是否相等？

Question

我是 Xcode 和 Swift 的新手，但我正在尽力 :)我需要一点帮助。到目前为止我已经写了这段代码......但我有一个问题，我不知道如何解决......好吧，我的问题是我无法检查两个变量是否相等。更准确地说，我想检查“fileAudio”编号是否等于应用中显示的照片编号。

我还需要一些帮助来显示两张随机图片(leftImage 和 rightImage)和链接到其中一张的“playSound”按钮。此时...我只能将其链接到leftImage。

var soundFiles: [String] = [
    "s0",
    "s1",
    "s2",
    "s3",
    "s4",
    "s5",
    "s6",
    "s7",
    "s8",
    "s9"
]

var images1: [UIImage] = [

    UIImage(named: "foto0.png")!,
    UIImage(named: "foto1.png")!,
    UIImage(named: "foto2.png")!,
    UIImage(named: "foto3.png")!,
    UIImage(named: "foto4.png")!,
    UIImage(named: "foto5.png")!,
    UIImage(named: "foto6.png")!,
    UIImage(named: "foto7.png")!,
    UIImage(named: "foto8.png")!
]

var images2: [UIImage] = [
    UIImage(named: "foto0.png")!,
    UIImage(named: "foto1.png")!,
    UIImage(named: "foto2.png")!,
    UIImage(named: "foto3.png")!,
    UIImage(named: "foto4.png")!,
    UIImage(named: "foto5.png")!,
    UIImage(named: "foto6.png")!,
    UIImage(named: "foto7.png")!,
    UIImage(named: "foto8.png")!
]

var happySad: [UIImage] = [
    UIImage(named: "sad.png")!,
    UIImage(named: "happy.png")!
    ]

var currentImageIndex = 0
var currentImage2Index = 0


var player: AVAudioPlayer!
var ran1:Int = 0
var ran2:Int = 0


@IBOutlet weak var leftImage: UIImageView!

@IBOutlet weak var rightImage: UIImageView!

@IBOutlet weak var sh: UIImageView!


@IBAction func playSound(_ sender: Any) {

    let fileaudio:String = "s"+String(ran1)
    let soundFilePath = Bundle.main.url(forResource: fileaudio, withExtension: ".m4a")!
    player = try! AVAudioPlayer(contentsOf: soundFilePath)
    player.prepareToPlay()
    player.play()
}
  @IBAction func nextImages(_ sender: Any) {
    ran1 = Int(arc4random_uniform(7) + 1)
    ran2 = Int(arc4random_uniform(6) + 2)

    let imageName1:String = "foto"+String(ran1)
    leftImage.image = UIImage.init(named: imageName1)

    let imageName2:String = "foto"+String(ran2)
    rightImage.image = UIImage.init(named: imageName2)

    leftImage.isUserInteractionEnabled = true
    self.view.addSubview(leftImage)
    let gesture1 = UITapGestureRecognizer(target: self, action: #selector(ViewController.singleTap1))
    leftImage.addGestureRecognizer(gesture1)

    sh.image = UIImage(named: "question")
    rightImage.isUserInteractionEnabled = true
    self.view.addSubview(rightImage)
    let gesture2 = UITapGestureRecognizer(target: self, action: #selector(ViewController.singleTap2))
    rightImage.addGestureRecognizer(gesture2)
 }

func singleTap1() {

    if currentImageIndex == ran1 {
        print("\(currentImageIndex)")
        sh.image = UIImage(named: "happy.png")
    } else {
        print("\(currentImageIndex)")
        sh.image = UIImage(named: "sad.png")
    }
}

func singleTap2() {
  if ran1 == ran2 {
        sh.image = UIImage(named: "happy.png")
    } else {
        sh.image = UIImage(named: "sad.png")
    }

}

谢谢你，拉杜

Answer 1

您应该生成一个从 0 到 1 的随机数来代表这两个按钮。一个 singleTap: 函数应该可以处理这两种情况。

fileprivate var leftRightNum: Int!

@IBAction func nextImages(_ sender: Any) {
    ran1 = Int(arc4random_uniform(7) + 1)
    ran2 = Int(arc4random_uniform(6) + 2)

    let imageName1:String = "foto"+String(ran1)
    leftImage.image = UIImage.init(named: imageName1)

    let imageName2:String = "foto"+String(ran2)
    rightImage.image = UIImage.init(named: imageName2)

    leftImage.isUserInteractionEnabled = true
    self.view.addSubview(leftImage)
    let gesture1 = UITapGestureRecognizer(target: self, action: #selector(ViewController.singleTap(_:)))
    leftImage.addGestureRecognizer(gesture1)

    sh.image = UIImage(named: "question")
    rightImage.isUserInteractionEnabled = true
    self.view.addSubview(rightImage)
    let gesture2 = UITapGestureRecognizer(target: self, action: #selector(ViewController.singleTap(_:)))
    rightImage.addGestureRecognizer(gesture2)

    leftRightNum = Int(arc4random_uniform(2))
 }

@IBAction func playSound(_ sender: Any) {
    let fileaudio:String = "s"+String(leftRightNum == 0 ? ran1 : ran2)
    let soundFilePath = Bundle.main.url(forResource: fileaudio, withExtension: ".m4a")!
    player = try! AVAudioPlayer(contentsOf: soundFilePath)
    player.prepareToPlay()
    player.play()
}

func singleTap(_ recognizer: UIGestureRecognizer) {
    if (recognizer.view == leftImage && leftRightNum == 0) || (recognizer.view == rightImage && leftRightNum == 1) {
        sh.image = UIImage(named: "happy.png")
    } else {
        sh.image = UIImage(named: "sad.png")
    }
}