ios - Swift 以编程方式向按钮添加显示操作

Question

如何以编程方式向按钮添加操作。我需要向 mapView 中的按钮添加显示操作。谢谢

let button = UIButton(type: UIButtonType.Custom) as UIButton

Answer 1

你可以使用下面的代码
`

let btn: UIButton = UIButton(frame: CGRect(x: 100, y: 400, width: 100, height: 50))
btn.backgroundColor = UIColor.green
btn.setTitle("Click Me", for: .normal)
btn.addTarget(self, action: #selector(buttonAction), for: .touchUpInside)
btn.tag = 1
self.view.addSubview(btn) 

行动

 @objc func buttonAction(sender: UIButton!) {
        let btnsendtag: UIButton = sender
        if btnsendtag.tag == 1 {

            dismiss(animated: true, completion: nil)
        }
    }