如果未单击 button1，则禁用 button2

Posted 2023-03-10

【中文标题】如果未单击 button1，则禁用 button2

【英文标题】：Disable button2 if button1 is not clicked

【发布时间】：2019-05-22 05:38:27

【问题描述】：

如果没有单击 button1，我想禁用 button2，并在单击 button1 时启用它。问题是，即使我已经点击了 button1，button2 也被禁用。我没有收到任何错误，我在 Xcode10 中使用 Swift4。

这是我的代码：

class ViewController: UIViewController 

  @IBOutlet weak var btn1: UIButton!
  @IBOutlet weak var btn2: UIButton!

  override func viewDidLoad() 
     super.viewDidLoad()

     intro()

     btn1.setImage(UIImage(named: "checked.png"), for: .selected)
     btn1.setImage(UIImage(named: "unchecked.png"), for: .normal)
  

  @IBAction func button1(_ sender: UIButton) 
     UIView.animate(withDuration: 0.5, delay: 0.1, options: .curveLinear, animations: 
        sender.transform = CGAffineTransform(scaleX: 0.1, y: 0.1)
    )  (success) in
     UIView.animate(withDuration: 0.5, delay: 0.1, options: .curveLinear, animations: 
            sender.isSelected = !sender.isSelected
            sender.transform = .identity
        , completion: nil)
      
   



   func intro() 
      if btn1.isSelected == true 
        btn2.isUserInteractionEnabled = true
       else 
        btn2.isUserInteractionEnabled = false
      
   

我也试过这段代码：

func intro() 
    if btn1.isTouchInside == true 
      btn2.isUserInteractionEnabled = true
     else 
      btn2.isUserInteractionEnabled = false
    
  

【问题讨论】：

请完成您的问题

【参考方案1】：

我认为首先你希望 button2 被禁用，当你点击 button1 时它应该被启用。

为此制作

 override func viewDidLoad() 
     super.viewDidLoad()

     btn1.setImage(UIImage(named: "checked.png"), for: .selected)
     btn1.setImage(UIImage(named: "unchecked.png"), for: .normal)
     btn2.isenable = false

   

 @IBAction func button1(_ sender: UIButton) 

    if sender.isSelected == true 
        
         btn2.isenable = true
        
       else 
       
         btn2.isenable = false
        

   

【参考方案2】：

在您的viewDidLoad()中添加以下任何代码

 btn2.isEnabled = false

或

btn2.isUserInteractionEnabled = false

并将您的按钮操作更改为，

@IBAction func button1(_ sender: UIButton) 

    if btn1.isSelected == true 
      btn2.isUserInteractionEnabled = true
     else 
      btn2.isUserInteractionEnabled = false