Tastaturproblem in iOS11

Question

NotificationCenter.default.addObserver(self, selector: #selector(self.keyboardWillHide), name: NSNotification.Name.UIKeyboardWillShow, object: nil) 

func keyboardWillHide(notification: NSNotification) { 
    if let rect = (notification.userInfo?[UIKeyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue { 

    } 
} 

Übrigens gibt Funktion nicht korrekt RectValue. Was ist falsch daran?

Answer 1

Versuchen Sie folgendes:

NotificationCenter.default.addObserver(self, selector: #selector(self.keyboardWillHide), name: NSNotification.Name.UIKeyboardWillHide, object: nil) 

NotificationCenter.default.addObserver(self, selector: #selector(self.keyboardWillShow), name: NSNotification.Name.UIKeyboardWillShow, object: nil) 

func keyboardWillHide(notification: NSNotification) { 
     if let rect = (notification.userInfo?[UIKeyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue { 

     } 
    } 
func keyboardWillShow(notification: NSNotification) { 
     if let rect = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue { 

     } 
    }