[英]Swift create a common extension for UIButton and UIView Color change
就我而言,我正在尝试创建多个buttons
。 在这里,每个按钮放置在单独的 UIView 上。 这个按钮就像一个基于选择的单个部分它的标题颜色和UIView
颜色我在每个按钮操作方法中进行更改。 在这里,我需要为所有按钮标题和 UIView 颜色变化创建一个通用扩展。 一次,按钮单击需要将值传递给扩展或 function 以更改 colors 为selection
按钮。 这是我正在尝试减少代码重复和 LOC。
NOTE:
下面我只发布了一个按钮代码,但我有很多按钮。 我想让它成为常见的 class 并传递值来更改 colors。 如何做到这一点?
第一个按钮操作
@IBAction func firstButtonClick(_ sender: Any) {
self.onetimeView.backgroundColor = colorLiteral(red: 0.184337255, green: 0.683529412, blue: 0.976475882, alpha: 1)
self.dailyView.backgroundColor = colorLiteral(red: 1, green: 1, blue: 1, alpha: 1)
self.weeklyView.backgroundColor = colorLiteral(red: 1, green: 1, blue: 1, alpha: 1)
self.fiftydaysView.backgroundColor = colorLiteral(red: 1, green: 1, blue: 1, alpha: 1)
self.monthlyView.backgroundColor = colorLiteral(red: 1, green: 1, blue: 1, alpha: 1)
self.onetimeButton.setTitleColor(UIColor.selectedColor, for: .normal)
self.dailyButton.setTitleColor(UIColor.disabledColor, for: .normal)
self.weeklyButton.setTitleColor(UIColor.disabledColor, for: .normal)
self.fiftydaysButton.setTitleColor(UIColor.disabledColor, for: .normal)
self.monthlyButton.setTitleColor(UIColor.disabledColor, for: .normal)
}
@IBAction func secondButtonClick(_ sender: Any) {
self.onetimeView.backgroundColor = colorLiteral(red: 1, green: 1, blue: 1, alpha: 1)
self.dailyView.backgroundColor = colorLiteral(red: 0.184337255, green: 0.683529412, blue: 0.976475882, alpha: 1)
self.weeklyView.backgroundColor = colorLiteral(red: 1, green: 1, blue: 1, alpha: 1)
self.fiftydaysView.backgroundColor = colorLiteral(red: 1, green: 1, blue: 1, alpha: 1)
self.monthlyView.backgroundColor = colorLiteral(red: 1, green: 1, blue: 1, alpha: 1)
self.onetimeButton.setTitleColor(UIColor.disabledColor, for: .normal)
self.dailyButton.setTitleColor(UIColor.selectedColor, for: .normal)
self.weeklyButton.setTitleColor(UIColor.disabledColor, for: .normal)
self.fiftydaysButton.setTitleColor(UIColor.disabledColor, for: .normal)
self.monthlyButton.setTitleColor(UIColor.disabledColor, for: .normal)
}
extension UIColor {
static var selectedColor = UIColor.init(red: 47/255, green: 174/255, blue: 248/255, alpha: 1)
static var disabledColor = UIColor.init(red: 170/255, green: 170/255, blue: 170/255, alpha: 1)
}
您可以创建一个子类,如:
class 主按钮:UIButton { }
将您的按钮和视图存储在某种数据结构中并对其进行迭代。 创建一个 function,它将在作为参数传递的视图上设置selectedColor
并在 rest 上设置disabledColor
。
typealias Section = (UIButton, UIView)
let sections: [Section] = [
(button: onetimeButton, view: onetimeView),
(button: dailyButton, view: dailyView),
(button: weeklyButton, view: weeklyView),
(button: fiftydaysButton, view: fiftydaysView),
(button: monthlyButton, view: monthlyView),
]
func select(_ section: Section) {
sections.forEach { (section) in
section.0.setTitleColor(UIColor.disabledColor, for: .normal)
section.1.backgroundColor = UIColor.disabledColor
}
section.0.setTitleColor(UIColor.selectedColor, for: .normal)
section.1.backgroundColor = UIColor.selectedColor
}
// in UIButton click call
select((onetimeButton, onetimeView))
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