ios - 类型 'UITextField' 没有成员 'textDidBeginEditingNotification'

Question

使用 Swift 4.1 时出现以下错误!!!!

Type 'UITextField' has no member 'textDidBeginEditingNotification'

Type 'UITextField' has no member 'textDidChangeNotification'

我的错误代码。

override open func draw(_ rect: CGRect) {
      super.draw(rect)
      self.drawLine()
      NotificationCenter.default.addObserver(self, selector: #selector(didBeginTextEdit), name: UITextField.textDidBeginEditingNotification, object: self)
      NotificationCenter.default.addObserver(self, selector: #selector(didTextEditFinish), name: UITextField.textDidChangeNotification, object: self)
}

Answer 1

Xcode 中的自动完成功能也可能会发现这一点，但您的通知名称有误。试试 UITextFieldTextDidBeginEditingNotification 和 UITextFieldTextDidChangeNotification。