不推荐使用Objective-C选择器的字符串文字；改用“#selector”[duplicate]

Question

我有以下代码：

 override func viewDidLoad() {
            super.viewDidLoad()
            //Looks for single or multiple taps.
            let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: "dismissKeyboard")
            view.addGestureRecognizer(tap)
            // Do any additional setup after loading the view.
        }

func dismissKeyboard() {
    //Causes the view (or one of its embedded text fields) to resign the first responder status.
    view.endEditing(true)
}

在运行应用程序时，当错误修复工作发生另一个错误时，就会出现此错误

Answer 1

从Swift 2.2开始，请改用以下命令:#selector(YourClass.DissKeyboard)

Answer 2

    let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(self.dismissKeyboard))

Answer 3

由于swift语言的更新，您会出现此错误，请更改您的点击选择器，以执行以下操作：

let tap = UITapGestureRecognizer(target: self, action: #selector(self.dismissKeyboard))

确保方法discuskeyboard在同一个视图控制器中，如果不是，则需要执行#selector(whateverhasthatmethod.discuskeyboard)

此外，请确保discissKeyboard方法实际存在，它应该是以下内容：

func dismissKeyboard(){
    YourInputField.endEditing(true)
}