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通过按下按钮随机显示按钮

2016-10-01 110 views
1

我想在我的项目中有六个按钮，并希望它们始终隐藏，除了一个。当我按下没有隐藏的按钮时，它应该被隐藏，并且另一个按钮应该随机出现并且执行相同的操作。 希望有人能帮助我！通过按下按钮随机显示按钮

来源

2016-10-01 Juli IchSelber

+0

欢迎堆栈溢出！请查看[如何提问]（http://stackoverflow.com/help/how-to-ask）以改善您的问题。发布您尝试过的代码以及收到的错误。尽可能具体，因为它会导致更好的答案。 – David

回答

4

创建你的故事板6 buttons，标签添加到他们，然后创建一个Action outlet你所有按钮连接到，然后做以下内容：

@IBAction func button_clicked(_ sender: AnyObject) { 
    // generate a random number which is not the same as the tag that you 
    repeat{ 
     random = Int(arc4random_uniform(6) + 1) 
    } 
    while random == sender.tag 

    // iterate through all subviews in your view to find all buttons 
    for view in self.view.subviews{ 
     // make sure it´s a button 
     if view.isKind(of: UIButton.self){ 
      // create a button from the view you're iterating to 
      let button = view as! UIButton 
      // if the button tag is equal to the random number you just created we want to show that button 
      if button.tag == random{ 
       button.isHidden = false 
      } 
      // else hide it 
      else{ 
       button.isHidden = true 
      } 
     } 
    } 
}

Here是我创建的做到这一点，你可以尝试一个样本项目。确保阅读上面代码中的注释并理解发生了什么。

来源

2016-10-01 08:30:11

+0

谢谢你为我工作的人！但是，当我在我的项目中添加更多按钮时，按下六个按钮中的一个，它们也会消失。我该如何解决这个问题？ –

+0

我将此代码添加到我的项目中以隐藏除一个之外的每个按钮。这可以吗？重写FUNC viewDidAppear（_动画：BOOL）{ BT6.isHidden =真 BT5.isHidden =真 BT4.isHidden =真 BT3.isHidden =真 BT2.isHidden =真 //隐藏除了一个当按钮视图控制器加载 } –

+0

您需要做2件事：1：将它们从故事板拖到'@IBAction func button_clicked（_ sender：AnyObject）''2：在故事板中添加标签 –

0

我假设你已经把你的六个按钮放到你的故事板上并将它们链接到你的课堂上。 我做得很快，所以它可能不是最有效的方法。

你会希望你的类的代码看起来是这样的：

override func viewDidAppear(_ animated: Bool) { 
    BT6.isHidden = true 
    BT5.isHidden = true 
    BT4.isHidden = true 
    BT3.isHidden = true 
    BT2.isHidden = true 
    //Hiding all but one button when the view controller loads 
} 

@IBOutlet weak var BT6: UIButton! 
@IBOutlet weak var BT5: UIButton! 
@IBOutlet weak var BT4: UIButton! 
@IBOutlet weak var BT3: UIButton! 
@IBOutlet weak var BT2: UIButton! 
@IBOutlet weak var BT1: UIButton! 

@IBAction func BT6(_ sender: AnyObject) { 
    //this checks when BT6 is pressed and then hides it 
    BT6.isHidden = true 
    let random = Int(arc4random_uniform(UInt32(4))) 
    if random == 0 { 
     BT5.isHidden = false 
    } else if random == 1 { 
     BT4.isHidden = false 
    } else if random == 2 { 
     BT3.isHidden = false 
    } else if random == 3 { 
     BT2.isHidden = false 
    } else if random == 4 { 
     BT1.isHidden = false 
    } 
    //this part creates a randomiser between 0-4 and depending on which number turns out, it will hide a certain button 
} 
@IBAction func BT5(_ sender: AnyObject) { 
    BT5.isHidden = true 
    let random = Int(arc4random_uniform(UInt32(4))) 
    if random == 0 { 
     BT6.isHidden = false 
    } else if random == 1 { 
     BT4.isHidden = false 
    } else if random == 2 { 
     BT3.isHidden = false 
    } else if random == 3 { 
     BT2.isHidden = false 
    } else if random == 4 { 
     BT1.isHidden = false 
    } 
} 
@IBAction func BT4(_ sender: AnyObject) { 
    BT4.isHidden = true 
    let random = Int(arc4random_uniform(UInt32(4))) 
    if random == 0 { 
     BT5.isHidden = false 
    } else if random == 1 { 
     BT6.isHidden = false 
    } else if random == 2 { 
     BT3.isHidden = false 
    } else if random == 3 { 
     BT2.isHidden = false 
    } else if random == 4 { 
     BT1.isHidden = false 
    } 
} 
@IBAction func BT3(_ sender: AnyObject) { 
    BT3.isHidden = true 
    let random = Int(arc4random_uniform(UInt32(4))) 
    if random == 0 { 
     BT5.isHidden = false 
    } else if random == 1 { 
     BT4.isHidden = false 
    } else if random == 2 { 
     BT6.isHidden = false 
    } else if random == 3 { 
     BT2.isHidden = false 
    } else if random == 4 { 
     BT1.isHidden = false 
    } 
} 
@IBAction func BT2(_ sender: AnyObject) { 
    BT2.isHidden = true 
    let random = Int(arc4random_uniform(UInt32(4))) 
    if random == 0 { 
     BT5.isHidden = false 
    } else if random == 1 { 
     BT4.isHidden = false 
    } else if random == 2 { 
     BT3.isHidden = false 
    } else if random == 3 { 
     BT6.isHidden = false 
    } else if random == 4 { 
     BT1.isHidden = false 
    } 
} 
@IBAction func BT1(_ sender: AnyObject) { 
    BT1.isHidden = true 
    let random = Int(arc4random_uniform(UInt32(4))) 
    if random == 0 { 
     BT5.isHidden = false 
    } else if random == 1 { 
     BT4.isHidden = false 
    } else if random == 2 { 
     BT3.isHidden = false 
    } else if random == 3 { 
     BT2.isHidden = false 
    } else if random == 4 { 
     BT6.isHidden = false 
    } 
}

来源

2016-10-01 08:16:17

+0

谢谢你，帮了我很多！ –

2

UI（故事板） enter image description here

在我的情况，六个按钮按钮标签数量各自为0分配给5.

enter image description here

// 
// ViewController.swift 
// StackOverflow 
// 
// Created by Seoksoon Jang on 2016. 10. 1.. 
// Copyright © 2016년 Seoksoon Jang. All rights reserved. 
// 

import UIKit 

class ViewController: UIViewController { 

var buttonTagNumberArray : Array<Int>? 
var randomIndex : Int? 

@IBOutlet var button1: UIButton! 
@IBOutlet var button2: UIButton! 
@IBOutlet var button3: UIButton! 
@IBOutlet var button4: UIButton! 
@IBOutlet var button5: UIButton! 
@IBOutlet var button6: UIButton! 

@IBAction func button1Action(_ sender: AnyObject) { 

    randomIndex = Int(arc4random_uniform(UInt32(buttonTagNumberArray!.count))) 

    if (randomIndex! == button1.tag) { 
     button1Action(button1) 
    } else { 

     button1.isHidden = true 

     switch randomIndex! { 
      case button1.tag : 
       print("it should happen : \(button1.tag)") 
       break 
      case button2.tag : 
       button2.isHidden = false; 
       break 
      case button3.tag : 
       button3.isHidden = false; 
       break 
      case button4.tag : 
       button4.isHidden = false; 
       break 
      case button5.tag : 
       button5.isHidden = false; 
       break 
      case button6.tag : 
       button6.isHidden = false; 
       break 
      default: 
       // 
       break; 
      } 

     return ; 
    } 
} 

@IBAction func button2Action(_ sender: AnyObject) { 

    randomIndex = Int(arc4random_uniform(UInt32(buttonTagNumberArray!.count))) 

    if (randomIndex! == button2.tag) { 
     button2Action(button2) 
    } else { 

     button2.isHidden = true; 

     switch randomIndex! { 
      case button1.tag : 
       button1.isHidden = false; 
       break 
      case button2.tag : 
       print("it should happen : \(button2.tag)") 
       break 
      case button3.tag : 
       button3.isHidden = false; 
       break 
      case button4.tag : 
       button4.isHidden = false; 
       break 
      case button5.tag : 
       button5.isHidden = false; 
       break 
      case button6.tag : 
       button6.isHidden = false; 
       break 
      default: 
       // 
       break; 
     } 

     return ; 
    } 

} 

@IBAction func button3Action(_ sender: AnyObject) { 

    randomIndex = Int(arc4random_uniform(UInt32(buttonTagNumberArray!.count))) 

    if (randomIndex! == button3.tag) { 
     button3Action(button3) 
    } else { 

     button3.isHidden = true; 

     switch randomIndex! { 
      case button1.tag : 
       button1.isHidden = false; 
       break 
      case button2.tag : 
       button2.isHidden = false; 
       break 
      case button3.tag : 
       print("it should happen : \(button2.tag)") 
       break 
      case button4.tag : 
       button4.isHidden = false; 
       break 
      case button5.tag : 
       button5.isHidden = false; 
       break 
      case button6.tag : 
       button6.isHidden = false; 
       break 
      default: 
       // 
       break; 
     } 

     return ; 
    } 

} 

@IBAction func button4Action(_ sender: AnyObject) { 

    randomIndex = Int(arc4random_uniform(UInt32(buttonTagNumberArray!.count))) 

    if (randomIndex! == button4.tag) { 
     button4Action(button4) 
    } else { 

     button4.isHidden = true; 

     switch randomIndex! { 
      case button1.tag : 
       button1.isHidden = false; 
       break 
      case button2.tag : 
       button2.isHidden = false; 
       break 
      case button3.tag : 
       button3.isHidden = false; 
       break 
      case button4.tag : 
       print("it should happen : \(button2.tag)") 
       break 
      case button5.tag : 
       button5.isHidden = false; 
       break 
      case button6.tag : 
       button6.isHidden = false; 
       break 
      default: 
       // 
       break; 
      } 

     return ; 
    } 

} 

@IBAction func button5Action(_ sender: AnyObject) { 

    randomIndex = Int(arc4random_uniform(UInt32(buttonTagNumberArray!.count))) 

    if (randomIndex! == button5.tag) { 
     button5Action(button5) 
    } else { 

     button5.isHidden = true; 

     switch randomIndex! { 
      case button1.tag : 
       button1.isHidden = false; 
       break 
      case button2.tag : 

       break 
      case button3.tag : 
       button3.isHidden = false; 
       break 
      case button4.tag : 
       button4.isHidden = false; 
       break 
      case button5.tag : 
       print("it should happen : \(button2.tag)") 
       break 
      case button6.tag : 
       button6.isHidden = false; 
       break 
      default: 
       // 
       break; 
     } 

     return ; 
    } 

} 

@IBAction func button6Action(_ sender: AnyObject) { 

    randomIndex = Int(arc4random_uniform(UInt32(buttonTagNumberArray!.count))) 

    if (randomIndex! == button6.tag) { 
     button6Action(button6) 
    } else { 

     button6.isHidden = true; 

     switch randomIndex! { 
      case button1.tag : 
       button1.isHidden = false; 
       break 
      case button2.tag : 
       button2.isHidden = false; 
       break 
      case button3.tag : 
       button3.isHidden = false; 
       break 
      case button4.tag : 
       button4.isHidden = false; 
       break 
      case button5.tag : 
       button5.isHidden = false; 
       break 
      case button6.tag : 
       print("it should happen : \(button2.tag)") 
       break 
      default: 
       // 
       break; 
     } 

     return ; 
    } 

} 

override func viewDidLoad() { 
    super.viewDidLoad() 

    // Do any additional setup after loading the view. 
    buttonTagNumberArray = [button1.tag, button2.tag, button3.tag, button4.tag, button5.tag, button6.tag] 
} 

override func didReceiveMemoryWarning() { 
    super.didReceiveMemoryWarning() 
    // Dispose of any resources that can be recreated. 
} 
} // class end

来源

2016-10-01 08:49:48 boraseoksoon

+0

我只是想使用递归。 ：p – boraseoksoon

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