swift 如何有选择地显示每张卡片的解法？

Question

在我的应用程序中，我有一个“下一步”按钮和一个“解决方案”按钮。当您按下一个新卡片时，会出现一张新卡片（即 Image card1），如果您再次按下一个卡片，则会随机出现另一张卡片。我的问题是如何有选择地显示每张卡片的解决方案（即对于 card1 有 sol1）

@IBAction func nextbutton（发件人：AnyObject）{

    //Randomize a number for the first imageview
    var firstRandomNumber = arc4random_uniform(2) + 1

    //Construct a string with the random number 
    var firstCardString:String = String(format: "card%i", firstRandomNumber)

    // Set the first card image view to the asset corresponding to the randomized number
    self.Image1.image = UIImage(named: firstCardString)



}



@IBAction func solutionbutton(sender: AnyObject) {

}

Answer 1

我附上了你的 problem.The 代码问题的完整示例是你在下一个按钮中创建的变量范围有限，我们希望解决方案具有相同的随机无值 card.Now 它们超出了下一个操作的范围，只需使用关键字 self

即可在此 class 中轻松访问它们

import UIKit

class YourViewController : UIViewController {
var randomNumber:Int = 0
var cardString:String = ""
var solutionString:String = ""

@IBAction func nextbutton(sender: AnyObject) {

//Randomize a number for the first imageview
self.randomNumber = arc4random_uniform(2) + 1

//Construct a string with the random number 
self.cardString = String(format: "card%i", self.randomNumber)
self.solutionString = String(format: "sol%i", self.randomNumber)
// Set the first card image view to the asset corresponding to the randomized number
self.Image1.image = UIImage(named: self.cardString)
}

@IBAction func solutionbutton(sender: AnyObject) {
self.Image1.image = UIImage(named: self.solutionString)
}
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.
}

}

swift 如何有选择地显示每张卡片的解法？

swift how to display solution for each card selectively?

iphone

xcode

swift