ios - 如何使用 Swift 从多个按钮中一次仅突出显示一个按钮

Question

就我而言，我正在尝试使用单个操作IBOutlet和标签选项创建多个按钮。在这里，我需要一次仅从多个按钮中选择一个按钮来突出显示单击的按钮。如何实现这一目标？

我的代码

@IBAction private func buttonAction(_ sender: UIButton) {

    if let button = sender as? UIButton {
    // here I need to do selection highlights at a time only one button from four buttons
    }

    // To differentiate different buttons
    switch (sender.tag) {
    case 0:
        print(sender.title(for: .normal)!)
    case 1:
        print(sender.title(for: .normal)!)
    case 2:
        print(sender.title(for: .normal)!)
    case 3:
        print(sender.title(for: .normal)!)
    default:
        print(sender.title(for: .normal)!)
    }
}

Answer 1

如果您知道所有按钮的标签，那么您可以像这样实现，

@IBAction private func buttonAction(_ sender: UIButton) {
    // Create a list of all tags
    let allButtonTags = [1, 2, 3, 4, 5]
    let currentButtonTag = sender.tag

    allButtonTags.filter { $0 != currentButtonTag }.forEach { tag in
        if let button = self.view.viewWithTag(tag) as? UIButton {
            // Deselect/Disable these buttons
            button.backgroundColor = #colorLiteral(red: 0.80803, green: 0.803803, blue: 0.805803, alpha: 1)
            button.setTitleColor(UIColor.darkGray, for: .normal)
            button.isSelected = false
        }
    }
    // Select/Enable clicked button
    sender.backgroundColor = #colorLiteral(red: 0.1843137255, green: 0.6823529412, blue: 0.9764705882, alpha: 1)
    sender.setTitleColor(UIColor.white, for: .normal)
    sender.isSelected = !sender.isSelected
}