I am trying to write a code to ensure UITextField move up when keyboard present. I have written a code based on what I found in stack overflow however it is not working. The original code was written in objective-c but I am not familiar with the it and hence decided to to write code in swift.
can anyone tell what I may be doing wring here?
{
// moving text box up when tyoing
func registerForKeyboardNotifications()
{
//Adding notifies on keyboard appearing
NotificationCenter.default.addObserver(self, selector: #selector(self.keyboardWasShown(notification:)), name: NSNotification.Name.UIKeyboardDidShow, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(self.keyboardWillBeHidden(notification:)), name: NSNotification.Name.UIKeyboardWillHide, object: nil)
}
@objc func keyboardWasShown(notification: NSNotification)
{
//Need to calculate keyboard exact size due to Apple suggestions
self.scrollView.isScrollEnabled = true
let info : NSDictionary = notification.userInfo! as NSDictionary
let keyboardSize = (info[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue.size
let contentInsets : UIEdgeInsets = UIEdgeInsetsMake(0.0, 0.0, keyboardSize!.height, 0.0)
self.scrollView.contentInset = contentInsets
self.scrollView.scrollIndicatorInsets = contentInsets
var aRect : CGRect = self.view.frame
aRect.size.height -= keyboardSize!.height
if (yourEmail) != nil
{
if (!aRect.contains(yourEmail!.frame.origin))
{
self.scrollView.scrollRectToVisible(yourEmail!.frame, animated: true)
}
}
}
@objc func keyboardWillBeHidden(notification: NSNotification)
{
//Once keyboard disappears, restore original positions
let info : NSDictionary = notification.userInfo! as NSDictionary as NSDictionary
let keyboardSize = (info[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue.size
let contentInsets : UIEdgeInsets = UIEdgeInsetsMake(0.0, 0.0, -keyboardSize!.height, 0.0)
self.scrollView.contentInset = contentInsets
self.scrollView.scrollIndicatorInsets = contentInsets
self.view.endEditing(true)
self.scrollView.isScrollEnabled = false
}
func textFieldDidBeginEditing(_ textField: UITextField)
{
yourEmail = textField
}
func textFieldDidEndEditing(_ textField: UITextField)
{
yourEmail = nil
}
}