问题描述
Iv得到了一个由9个按钮和一个标签显示与水果关联的文本的应用程序。
IV用名称，对象和标识符创建了一个结构。我最初创建了一个Outlet集合，但不知道如何将按钮连接到已初始化的标识符变量，然后为所有对象创建了单独的出口。
游戏从头到尾完美运行-现在我的问题是当我想回复游戏时，我希望游戏重设但改写文本标签。因此，每次用户按下重播按钮都会弹出一个新的水果名称。
有人可以指出正确的方向吗？单击该标识符后，如何才能将其随机播放？
谢谢
import Foundation
struct Fruitness
{
var fruit = [Fruit]()
var fruitOptions = [
Fruit(identifier: 1,fruit:"?",name: "KIWI"),Fruit(identifier: 2,name: "APPLE"),Fruit(identifier: 3,name: "PEAR"),Fruit(identifier: 4,name: "ORANGE"),Fruit(identifier: 5,name: "STRAWBerry"),Fruit(identifier: 6,name: "WATERMELON"),Fruit(identifier: 7,name: "GRAPES"),Fruit(identifier: 8,name: "BANANA"),Fruit(identifier: 9,name: "CHERRY")
]
var fruitIndex = [index]
var fruitNumber = 0
var score = 0
mutating func checkAnswer(userAnswer: String) -> Bool {
//Need to change answer to rightAnswer here.
if userAnswer == fruitOptions[fruitNumber].fruit {
score += 1 //We increase the value of score when we get the answer right.
return true
} else {
return false
}
}
func getscore() -> Int {
return score
}
mutating func getFruitText() -> String {
return fruitOptions[fruitNumber].name
}
func getProgress() -> Float {
let progress = Float(fruitNumber) / Float(fruitOptions.count)
return progress
}
mutating func nextFruit() {
if fruitNumber + 1 < fruitOptions.count {
fruitNumber += 1
} else {
// fruitNumber = 0
score = 0
}
}
mutating func shuffleFruitLabel(at index: Int) {
fruitOptions.shuffle()
}
//Todo: Shuffle fruit on Buttons
}
控制器
import UIKit
class GameViewController: UIViewController {
@IBOutlet weak var progressBar: UIProgressView!
@IBOutlet private weak var fruitLabel: UILabel!
@IBOutlet private weak var scoreLabel: UILabel!
@IBOutlet private weak var playAgain: UIButton!
@IBOutlet weak var optionButton0: UIButton!
@IBOutlet weak var optionButton1: UIButton!
@IBOutlet weak var optionButton2: UIButton!
@IBOutlet weak var optionButton3: UIButton!
@IBOutlet weak var optionButton4: UIButton!
@IBOutlet weak var optionButton5: UIButton!
@IBOutlet weak var optionButton6: UIButton!
@IBOutlet weak var optionButton7: UIButton!
@IBOutlet weak var optionButton8: UIButton!
@IBOutlet private var fruitButtons: [UIButton]!
var fruitness = Fruitness()
override func viewDidLoad() {
super.viewDidLoad()
updateUI()
}
@IBAction func replayButton(_ sender: UIButton) {
// fruitLabel.text = fruitness.fruitOptions[randomFruit].name
//self.dismiss(animated: false,completion: nil)
}
@IBAction func touchButton(_ sender: UIButton) {
//--//
let userAnswer = sender.currentTitle!
let userGotItRight = fruitness.checkAnswer(userAnswer: userAnswer)
if userGotItRight {
sender.backgroundColor = UIColor.green
} else {
sender.backgroundColor = UIColor.red
}
// fruitness.shuffleFruitTextWhenReset()
fruitness.nextFruit()
Timer.scheduledTimer(timeInterval: 0.2,target: self,selector: #selector(updateUI),userInfo:nil,repeats: false)
}
@objc func updateUI() {
optionButton0.backgroundColor = UIColor.clear
optionButton1.backgroundColor = UIColor.clear
optionButton2.backgroundColor = UIColor.clear
optionButton3.backgroundColor = UIColor.clear
optionButton4.backgroundColor = UIColor.clear
optionButton5.backgroundColor = UIColor.clear
optionButton6.backgroundColor = UIColor.clear
optionButton7.backgroundColor = UIColor.clear
optionButton8.backgroundColor = UIColor.clear
fruitLabel.text = fruitness.getFruitText()
progressBar.progress = fruitness.getProgress()
scoreLabel.text = "score: \(fruitness.getscore())"
}
}
func imageOnButton(fruit: String,on button: UIButton) {
if button.currentTitle == fruit {
button.setTitle(fruit,for: UIControl.State.normal)
}
}
import Foundation
struct Fruit {
var identifier: Int
var name: String
var fruit: String
init(identifier : Int,fruit : String,name : String) {
self.identifier = identifier
self.name = name
self.fruit = fruit
}
}
解决方法
您可以重新整理fruitOptions数组，然后根据新索引重新分配标识符。
例如：
fruitOptions.shuffle() // Shuffles the array
for (index,fruitOption) in fruitOptions.enumerated() {
fruitOption.identifier = index + 1
}
添加（index，fruitOption）允许您遍历数组并访问每个项目的索引值，因此您可以将该索引值分配为新标识符（+1，因为我看到您从1开始计数标识符而不是0）
.enumerated仅允许您执行以上所述。 您可以阅读有关该in Apple's documentations
的更多信息