Ios 使用UIImage从数组中删除索引

除了在数组的最后一个元素上，一切都很好，我得到了一个致命的错误：当我单击SnapButton时，数组索引超出了范围。我试图补充：

//var indexA = getRandomIntFromArray(cardNamesArray)
//var indexB = getRandomIntFromArray(cardNamesArray2)

但我得不能在类型视图控制器上使用，我不确定这意味着什么

var firstRandomNumber = Int()
var secondRandomNumber = Int()

class ViewController: UIViewController {

@IBOutlet weak var FirstCardImageView: UIImageView!
@IBOutlet weak var SecondCardImageView: UIImageView!
@IBOutlet weak var PlayRoundButton: UIButton!
@IBOutlet weak var BackgroundImageView: UIImageView!
@IBOutlet weak var playerScoreLabel: UILabel!

var playerScore: Int = 0

var cardNamesArray = ["acorn", "angry","apple", "rainbow", "sad","boots", "heart", "pumpkin","chestnuts"]
var cardNamesArray2 = ["bellota", "enfadado","manzana", "arcoiris","triste","botas","corazon", "calabaza", "castana"]

  override func viewDidLoad() {

   super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

}


override func didReceiveMemoryWarning() {

    super.didReceiveMemoryWarning()

    // Dispose of any resources that can be recreated.

}

@IBAction func playRoundTapped(sender: UIButton) {


    firstRandomNumber = GKRandomSource.sharedRandom().nextIntWithUpperBound(cardNamesArray.count)
    FirstCardImageView.image = UIImage(named: cardNamesArray[firstRandomNumber])

    secondRandomNumber = GKRandomSource.sharedRandom().nextIntWithUpperBound(cardNamesArray2.count)
    SecondCardImageView.image = UIImage(named: cardNamesArray2[secondRandomNumber])


}

    func getRandomIntFromArray(array: [String]) -> Int  {

        return GKRandomSource.sharedRandom().nextIntWithUpperBound(cardNamesArray.count)

    }

//var indexA = getRandomIntFromArray(cardNamesArray)
//var indexB = getRandomIntFromArray(cardNamesArray2)



@IBAction func SnapButtonTapped(sender: UIButton) {
    if cardNamesArray.count > 0 {

        if firstRandomNumber == secondRandomNumber {

            cardNamesArray.removeAtIndex(firstRandomNumber)
            cardNamesArray2.removeAtIndex(secondRandomNumber)

            firstRandomNumber = getRandomIntFromArray(cardNamesArray)
            secondRandomNumber = getRandomIntFromArray(cardNamesArray2)


            //on the last element of the array when I click on SnapButtonTapped I get fatal error: Array index out of range
            FirstCardImageView.image = UIImage(named: cardNamesArray[firstRandomNumber])
            SecondCardImageView.image = UIImage(named: cardNamesArray2[secondRandomNumber])
            print(cardNamesArray)


    } else  {
                print("no cards in array")

        }

    }

}

}

---

看起来您的数组正在跟踪字符串，而不是图像

这条线

 SecondCardImageView.image = UIImage(named: secondCardString)

正在基于字符串创建图像，该字符串未与字符串引用关联或连接

如果要管理图像，需要保留图像数组而不是字符串

---

或者，如果数组跟踪的是字符串，而不是图像，则可以使用字典

这条线

 SecondCardImageView.image = UIImage(named: secondCardString)

正在基于字符串创建图像，该字符串未与字符串引用关联或连接

如果要管理图像，需要保留图像数组而不是字符串

---

或者，您可以使用字典

要从卡中删除图像吗

如果答案是肯定的，只需将卡的图像更改为其他图像：

if firstRandomNumber == secondRandomNumber {
        //print("index match")
        //self.playRoundTapped(self.PlayRoundButton) <--- I have tried to recall the playRoundTapped method but it doesn't remove the element and goes crazy

            cardNamesArray.removeAtIndex(firstRandomNumber)<----how can I apply this to a UIImage?
            cardNamesArray2.removeAtIndex(secondRandomNumber)
            FirstCardImageView.image = UIImage(named: "someDefaultImage")
            SecondCardImageView.image = UIImage(named: "someDefaultImage")
        } 

如果firstRandomNumber==secondRandomNumber{
//打印（“索引匹配”）
//self.playRoundTapped（self.PlayRoundButton）要从卡中删除图像吗

如果答案是肯定的，只需将卡的图像更改为其他图像：

if firstRandomNumber == secondRandomNumber {
        //print("index match")
        //self.playRoundTapped(self.PlayRoundButton) <--- I have tried to recall the playRoundTapped method but it doesn't remove the element and goes crazy

            cardNamesArray.removeAtIndex(firstRandomNumber)<----how can I apply this to a UIImage?
            cardNamesArray2.removeAtIndex(secondRandomNumber)
            FirstCardImageView.image = UIImage(named: "someDefaultImage")
            SecondCardImageView.image = UIImage(named: "someDefaultImage")
        } 

如果firstRandomNumber==secondRandomNumber{
//打印（“索引匹配”）
//self.playRoundTapped（self.PlayRoundButton）你可以在操场上运行这个程序来理解逻辑

import UIKit
import GameKit

var array1 = ["one", "two"]
var array2 = ["one", "two"]

// Create a helper method to get random int
func getRandomIntFromArray(array: [String]) -> Int {
    return GKRandomSource.sharedRandom().nextIntWithUpperBound(array1.count)
}

var indexA = getRandomIntFromArray(array1)
var indexB = getRandomIntFromArray(array2)

// At snapButtonTapped
// Check the array count first so that you will not get index out of range.
if array1.count > 0 {
    if indexA == indexB {

        // First remove index first
        array1.removeAtIndex(indexA)
        array2.removeAtIndex(indexB)

        // Assign to new random index
        indexA = getRandomIntFromArray(array1)
        indexB = getRandomIntFromArray(array2)

        // After assigned a new random index, set image base on that index
        // FirstCardImageView.image = UIImage(named: array1[indexA])
        // SecondCardImageView.image = UIImage(named: array2[indexB])
    }
} else {
    print("Finished, all array was removed") // Do anything here such as set empty image for FirstCardImageView & SecondCardImageView or success alert.
}

你可以在操场上运行这个来理解逻辑

import UIKit
import GameKit

var array1 = ["one", "two"]
var array2 = ["one", "two"]

// Create a helper method to get random int
func getRandomIntFromArray(array: [String]) -> Int {
    return GKRandomSource.sharedRandom().nextIntWithUpperBound(array1.count)
}

var indexA = getRandomIntFromArray(array1)
var indexB = getRandomIntFromArray(array2)

// At snapButtonTapped
// Check the array count first so that you will not get index out of range.
if array1.count > 0 {
    if indexA == indexB {

        // First remove index first
        array1.removeAtIndex(indexA)
        array2.removeAtIndex(indexB)

        // Assign to new random index
        indexA = getRandomIntFromArray(array1)
        indexB = getRandomIntFromArray(array2)

        // After assigned a new random index, set image base on that index
        // FirstCardImageView.image = UIImage(named: array1[indexA])
        // SecondCardImageView.image = UIImage(named: array2[indexB])
    }
} else {
    print("Finished, all array was removed") // Do anything here such as set empty image for FirstCardImageView & SecondCardImageView or success alert.
}

如何将其更改为数组中的下一个图像而不是“someDefaultImage”？您已经有了当前图像索引，它是firstRandomNumber和secondRandomNumber。因此，只需从图像数组中获取下一个索引处的图像，类似于让image1Name=myImagesArray[firstRandomNumber+1]让image2Name=myImagesArray[secondRandomNumber+1]嘿，我把代码放在removeAtIndex下面，但告诉我用
let FirstCardImageView=cardNamesArray[firstRandomNumber+1]替换“let”
当你不需要某个函数的结果时，你可以使用uu。发布你的代码，让你更容易看到你做了什么。看一下我在原始帖子中更新的代码。我发现两个问题：第一个问题；换成下一个匹配对的卡应该是随机的。第二个问题我得到数组索引超出范围。而不是“someDefaultImage”如何将其更改为数组中的下一个图像？您已经有了当前图像索引，它是firstRandomNumber和secondRandomNumber。因此，只需从图像数组中获取下一个索引处的图像，类似于让image1Name=myImagesArray[firstRandomNumber+1]让image2Name=myImagesArray[secondRandomNumber+1]嘿，我把代码放在removeAtIndex下面，但告诉我用
let FirstCardImageView=cardNamesArray[firstRandomNumber+1]替换“let”
当您不需要某个函数的结果时，您可以使用uu。发布您的代码以便于查看您所做的事情。请查看我在原始帖子中更新的代码。我遇到两个问题：第一个问题；换成下一个匹配对的卡应该是随机的。第二个问题我的数组索引超出了范围。感谢您查看此问题，我收到一条错误消息“当我分配IndexA=getRandomIntFromArray（array1）时，实例成员'cardNamesArray不能用于类型'ViewController'欢迎，很高兴你收到它！嘿，看看我的原始帖子，我得到的是“不能用于类型ViewController”“再次发送消息。不确定这意味着什么感谢您的关注，我收到了一条错误消息”当我分配IndexA=getRandomIntFromArray（array1）时，实例成员'cardNamesArray不能用于类型'ViewController'欢迎，很高兴您收到它！嘿，看看我的原始帖子，我得到的是“不能用于类型ViewController”“请再说一遍，我不知道这是什么意思