ios - 将 UIView 的 UILabel 居中

Question

我目前正在尝试制作一个简单的弹出窗口，这里我有一个按钮，一旦点击它。

它应该在其上方显示一个简单的 View ，我实现了蓝色背景，但我无法向其添加标签，并将标签居中蓝色弹出窗口

let width = (sender as! UIButton).frame.width
let y = (sender as! UIButton).frame.origin.y
let x = (sender as! UIButton).frame.origin.x

myView = UIView(frame: CGRect(x: x, y: y - 30, width:width, height: 30))
myView.backgroundColor = UIColor.blue

let label = UILabel()
label.text = (sender as! UIButton).titleLabel?.text
label.font = UIFont(name:"avenirNext-Meduim",size:20)
label.center = self.myView.center
myview.addSubview(label)
self.view.addSubview(myView)

UIView.animate(withDuration: 0.1, delay: 0.1, options: [], animations: {

    self.myView.alpha = 0.0

}) { (finished: Bool) in

    self.myView.isHidden = true
}

Answer 1

尝试设置标签框架:

let label = UILabel(frame: CGRect(origin: .zero, size: yourLabelSize))