Swift以编程方式向按钮添加显示动作 [英] Swift add show action to button programmatically

问题描述

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

how can I add action to button programmatically. I need to add show action to buttons in mapView. thanks

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

推荐答案

您可以使用以下代码
`

You can go for below code
`

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) 

采取行动

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

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

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