ios - Swift 语言的 UITapGestureRecognizer

Question

let hideTap = UITapGestureRecognizer(target: self, action: #selector(hideKeyboardTap))
func hideKeyboardTap(recognizer: UITapGestureRecognizer){
    self.view.endEditing(true)
}

hideTap.numberOfTapsRequired = 1
self.view.isUserinteractionEnabled = true
self.view.addGestureRecognizer(hideTap)

当我运行上面的代码时，Xcode 报告“swift compiler error: Expected declaration”。 这行 hideTap.numberOfTapsRequired = 1 一定有错误，但我找不到。你能帮帮我吗？谢谢。

Answer 1

你可以试试这个:

override func viewDidLoad() {
        super.viewDidLoad()       
        let hideTap = UITapGestureRecognizer(target: self, action: #selector(self.hideKeyboardTap(_:))
       hideTap.numberOfTapsRequired = 1
       self.view.isUserinteractionEnabled = true
       self.view.addGestureRecognizer(hideTap)
    }

func hideKeyboardTap(recognizer: UITapGestureRecognizer){
    self.view.endEditing(true)
}