Swift Pop-up keyboard view auto-rise

1. Set the function for monitoring keyboard events:

override func viewWillAppear (animated: Bool) {
        NSNotificationCenter.defaultCenter (). AddObserver (self, selector: "keyboardWillShow:", name: UIKeyboardWillShowNotification, object: nil)
        NSNotificationCenter.defaultCenter (). AddObserver (self, selector: "keyboardWillHide:", name: UIKeyboardWillHideNotification, object: nil)
    }
2. Handle pop-up events:

func keyboardWillShow (notification: NSNotification) {if let keyboardSize = (notification.userInfo? [UIKeyboardFrameBeginUserInfoKey] as? NSValue) ?. CGRectValue () {
            // let contentInsets = UIEdgeInsets (top: 0, left: 0, bottom: keyboardSize.height, right: 0)
            // let keyboardheight = keyboardSize.height as CGFloat
            // let frame = self.nameInput.frame
            // frame.origin.y = frame.origin.y-keyboardheight
            // var offset = 156 as CGFloat
            var width = self.view.frame.size.width;
            var height = self.view.frame.size.height;
            let rect = CGRectMake (0.0, -156, width, height);
            self.view.frame = rect
        }
    }
3. Handle the recovery event:

func keyboardWillHide (notification: NSNotification) {
        self.view.addSubview (logoArea)
        var width = self.view.frame.size.width;
        var height = self.view.frame.size.height;
        let rect = CGRectMake (0.0, 0, width, height);
        self.view.frame = rect
    }
 

swift pop-up keyboard view automatically rises