Objective-C的@selector在Swift中用Selector结构体来替代。在Swift中,我们可以使用字符串常量来构造Selector,例如:
let mySelector: Selector = "tappedButton:"
因为字符串最终会被自动转换成Selector。下面是一个例子:
// Swift myButton.addTarget(self, action: "buttonTapped:", forControlEvents: .TouchUpInside) func buttonTapped(sender: UIButton!) { // custom code... }
(有参数的千万别忘了加冒号:)
:-]
时间: 2024-07-29 20:58:39