以编程方式在 swift 中为每个枚举创建一个 UIButton-解网

问：

我正在尝试以编程方式在 swift UIKI 中构建一个绘图应用程序，但现在我刚刚遇到了一个问题，我正在尝试创建一个调色板来交换属性，为此我创建了一个枚举并使其在函数中使用迭代，以便我能够在函数中以编程方式创建一个，但我看到的只是一个白色方块模拟器屏幕顶部UIColorPencilCaseIterable.allCasesUIButtoncreateColorButton

这是我的职能

 func createColorButton() -> [UIButton]{
        
        var buttons: [UIButton] = []
        for pencilCase in Pencil.allCases {
            let button = UIButton(frame: CGRect(x: 50, y: 50, width: 100, height: 100))
            button.backgroundColor = pencilCase.color
            button.tag = pencilCase.hashValue
            
            
            button.addTarget(self, action: #selector(buttonClicked), for: .touchUpInside)
            buttons.append(button)
        }
     return buttons
    }

蚂蚁这是我的枚举Pencil

enum Pencil: CaseIterable {
    
    case black
    case grey
    case red
    case darkblue
    case lightBlue
    case darkGreen
    case lightGreen
    case brown
    case orange
    case yellow
    case eraser
    
    init?(tag: Int) {
        switch tag {
        case 1:
          self = .black
        case 2:
          self = .grey
        case 3:
          self = .red
        case 4:
          self = .darkblue
        case 5:
          self = .lightBlue
        case 6:
          self = .darkGreen
        case 7:
          self = .lightGreen
        case 8:
          self = .brown
        case 9:
          self = .orange
        case 10:
          self = .yellow
        case 11:
          self = .eraser
        default:
          return nil
        }
      }
    // cases for penil.color 
    var color: UIColor {
      switch self {
      case .black:
        return .black
      case .grey:
        return UIColor(white: 105/255.0, alpha: 1.0)
      case .red:
        return UIColor(red: 1, green: 0, blue: 0, alpha: 1.0)
      case .darkblue:
        return UIColor(red: 0, green: 0, blue: 1, alpha: 1.0)
      case .lightBlue:
        return UIColor(red: 51/255.0, green: 204/255.0, blue: 1, alpha: 1.0)
      case .darkGreen:
        return UIColor(red: 102/255.0, green: 204/255.0, blue: 0, alpha: 1.0)
      case .lightGreen:
        return UIColor(red: 102/255.0, green: 1, blue: 0, alpha: 1.0)
      case .brown:
        return UIColor(red: 160/255.0, green: 82/255.0, blue: 45/255.0, alpha: 1.0)
      case .orange:
        return UIColor(red: 1, green: 102/255.0, blue: 0, alpha: 1.0)
      case .yellow:
        return UIColor(red: 1, green: 1, blue: 0, alpha: 1.0)
      case .eraser:
        return .white
      }
    }
}

我在UIViewController中传递该函数，但正如我所提到的，它没有像我预期的那样工作。我只看到一个“白色方块”，而不是每个 UIbuttoncreateColorButtonsecondViewControllerPencil.color

    override func viewDidLoad() {
        super.viewDidLoad()
        
      
        let buttons = createColorButton()
        for button in buttons {
                self.view.addSubview(button)
            }
        setupImageViews()
        
    }

有什么建议可以让我工作吗？

Swift 枚举 UIKIT UIBubuttonS

    override func viewDidLoad() {
        super.viewDidLoad()
        let buttons = createColorButton()
        stackView.spacing = 5
        for button in buttons {
            stackView.addArrangedSubview(button)
            button.layer.borderWidth = 1
            button.layer.borderColor = UIColor.blue.cgColor
            button.layer.cornerRadius = 10
        }
    }

结果如下所示：

上一个：UIButton 无法以编程方式在 UIKit 中工作

下一个：更改 UIButtons 数组的标题

以编程方式在 swift 中为每个枚举创建一个 UIButton

Create a UIButton for each enum case in swift programmatically

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