Swift / Xcode-自定义注释视图中的按钮无响应

Question

我已经创建了一个自定义注释视图，如下所述：https://sweettutos.com/2016/03/16/how-to-completely-customise-your-map-annotations-callout-views/

它工作正常，并显示正确的数据/信息。问题似乎是添加的按钮没有对.touchUpInside的响应。

let button = UIButton()
button.addTarget(self, action: #selector(ViewController.deleteFromAnnot(sender: )), for: .touchUpInside)

button.frame = CGRect.init(x: 16, y: 543, width: 268, height: 30)
button.backgroundColor = .yellow
calloutView.addSubview(button)


@objc func deleteFromAnnot(sender: UIButton)
{
    print("Do something")

}

Answer 1

在我看来，您的按钮目标设置不正确。

替换

button.addTarget(self, action: #selector(ViewController.deleteFromAnnot(sender: )), for: .touchUpInside)

带

button.addTarget(self, action: #selector(deleteFromAnnot(sender: )), for: .touchUpInside)