swift - UIImageView 的 If 语句

Question

我创建了一个 UIImagesViews 数组，并编写了一个代码来为它们分配随机图片。如果超过或 5 张图片显示相同的图片，我想制作一个 if 语句。

var images: [UIImageView] = [Image1, Image2, Image3, Image4, Image5, Image6, Image7, Image8, Image9]

不同的图片被命名为card1、card2、card3

let firstRandomNumber = arc4random_uniform(3) + 1
    let firstRandomString:String = String(format: "card%i", firstRandomNumber)

    self.Image1.image = UIImage(named: firstRandomString)

    let secondRandomNumber = arc4random_uniform(3) + 1
    let secondRandomString:String = String(format: "card%i", secondRandomNumber)

    self.Image2.image = UIImage(named: secondRandomString)

所有图像都有自己的特定代码，如上面的代码。现在，正如我所说，如果五个或更多图像显示相同的图片，我想制作一个 if 语句或 switch-case。

编辑:这是更新后的代码；

let imageNames:NSArray = [firstRandomString, secondRandomString, thirdRandomString, fourthRandomString, fifthRandomString, sixthRandomString, seventhRandomString, eighthRandomString, ninthRandomString]

    let maxRepeating = imageNames
        .map {img in imageNames.reduce(0) { $1 == img ? $0 + 1 : $0} }
        .reduce(0){ $1 > $0 ? $1 : $0 }

代码只有一个错误 .map {img in imageNames.reduce(0) { $1 == img ? $0 + 1 : $0} } 说；

Binary operator '==' cannot be applied to two 'Element' (aka 'AnyObject') operands

编辑:这是我从克里斯托弗·凯文那里尝试过的另一个代码；

var correct = 0

func checkImageDuplication() {
        let imageArray : NSArray = [firstRandomString, secondRandomString, thirdRandomString, fourthRandomString, fifthRandomString, sixthRandomString, seventhRandomString, eighthRandomString, ninthRandomString]
        let imageDataArray = imageArray.map { (image) -> NSData in
            return UIImagePNGRepresentation(image as! UIImage)!
        }

        let countSet = NSCountedSet(array: imageDataArray)
        for imageData in imageDataArray {
            let count = countSet.countForObject(imageData)
            if count > 5 {
                correct = 5
            }
        }
    }

@IBAction func PlayerPRESSED(sender: AnyObject) {
    if correct == 5 {
        view.backgroundColor = UIColor.greenColor()
    }
}

我尝试了代码，但它不会执行该操作。 (view.backgroundColor) 有人知道这段代码有什么问题吗？

Answer 1

这里的逻辑需要与 View 分开。

在保存 UIImage 数组的同一类中创建一个模型。使用此数组填充您的卡片，并检查是否有超过 5 个图像相同。未经测试和未优化的代码示例:

var images = [UIImage]() 

private func populateImages() {
  // Fill images array, and perhaps populate imageViews
}

private func checkImageDuplication() {
  let imageDataArray = imageArray.map { (image) -> NSData in
    return UIImagePNGRepresentation(image)!
  }

  let countSet = NSCountedSet(array: imageDataArray)
  for imageData in imageDataArray {
      let count = countSet.countForObject(imageData)
      if count > 5 {
          // Handle here
      }
  }
}