swift 如何有选择地显示每张卡的解决方案？

Posted 2023-03-21

【中文标题】swift 如何有选择地显示每张卡的解决方案？

【英文标题】：swift how to display solution for each card selectively?

【发布时间】：2015-02-01 10:48:25

【问题描述】：

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。当您按下下一张时，会出现一张新卡（即图像卡 1），如果您再次按下下一张，则会随机出现另一张卡。我的问题是如何有选择地显示每张卡的解决方案（即对于 card1 有 sol1）

@IBAction func nextbutton(sender: 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) 

【参考方案1】：

我附上了您问题的完整示例。您的代码的问题是您在下一个按钮中创建的变量范围有限，我们希望解决方案卡具有相同的随机无值。现在它们超出了只需使用关键字 self

即可在此类中轻松访问下一步操作的范围

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.