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August 23, 2021 02:32
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keyboard handling swift
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| override func viewWillAppear(_ animated: Bool) { | |
| NotificationCenter.default.addObserver(self,selector: #selector(self.keyboardDidShow(notification:)), | |
| name: UIResponder.keyboardDidShowNotification, object: nil) | |
| NotificationCenter.default.addObserver(self,selector: #selector(self.keyboardWillBeHidden(notification:)), | |
| name: UIResponder.keyboardWillHideNotification, object: nil) | |
| } | |
| override func viewWillDisappear(_ animated: Bool) { | |
| NotificationCenter.default.removeObserver(self) | |
| } | |
| // MARK: - keyboard handling functions | |
| @objc func keyboardDidShow(notification: NSNotification) { | |
| let userInfo = notification.userInfo! | |
| var keyboardFrame:CGRect = (userInfo[UIResponder.keyboardFrameBeginUserInfoKey] as! NSValue).cgRectValue | |
| keyboardFrame = self.view.convert(keyboardFrame, from: nil) | |
| var contentInset:UIEdgeInsets = self.scrollView.contentInset | |
| contentInset.bottom = keyboardFrame.size.height + 5 | |
| scrollView.contentInset = contentInset | |
| } | |
| @objc func keyboardWillBeHidden(notification: NSNotification) { | |
| let contentInsets = UIEdgeInsets.zero | |
| self.scrollView.contentInset = contentInsets | |
| self.scrollView.scrollIndicatorInsets = contentInsets | |
| } |
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