ScrollView and keyboard in Swift

In ViewDidLoad, register the notifications:

NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillShow), name:UIResponder.keyboardWillShowNotification, object: nil)NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillHide), name:UIResponder.keyboardWillHideNotification, object: nil)

Add below observer methods which does the automatic scrolling when keyboard appears.

@objc func keyboardWillShow(notification:NSNotification) {    guard let userInfo = notification.userInfo else { return }    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 + 20    scrollView.contentInset = contentInset}@objc func keyboardWillHide(notification:NSNotification) {    let contentInset:UIEdgeInsets = UIEdgeInsets.zero    scrollView.contentInset = contentInset}

The top answer for swift 3:

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

And then:

func keyboardWillShow(notification:NSNotification){    //give room at the bottom of the scroll view, so it doesn't cover up anything the user needs to tap    var userInfo = notification.userInfo!    var keyboardFrame:CGRect = (userInfo[UIKeyboardFrameBeginUserInfoKey] as! NSValue).cgRectValue    keyboardFrame = self.view.convert(keyboardFrame, from: nil)    var contentInset:UIEdgeInsets = self.theScrollView.contentInset    contentInset.bottom = keyboardFrame.size.height    theScrollView.contentInset = contentInset}func keyboardWillHide(notification:NSNotification){    let contentInset:UIEdgeInsets = UIEdgeInsets.zero    theScrollView.contentInset = contentInset}

Here is a complete solution, utilizing guard and concise code. Plus correct code in keyboardWillHide to only reset the bottom to 0.

@IBOutlet private weak var scrollView: UIScrollView!override func viewWillAppear(_ animated: Bool) {    super.viewWillAppear(animated)    registerNotifications()}override func viewDidDisappear(_ animated: Bool) {    super.viewDidDisappear(animated)    scrollView.contentInset.bottom = 0}private func registerNotifications() {    NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillShow), name: UIResponder.keyboardWillShowNotification, object: nil)    NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillHide), name: UIResponder.keyboardWillHideNotification, object: nil)}@objc private func keyboardWillShow(notification: NSNotification){    guard let keyboardFrame = notification.userInfo![UIResponder.keyboardFrameEndUserInfoKey] as? NSValue else { return }    scrollView.contentInset.bottom = view.convert(keyboardFrame.cgRectValue, from: nil).size.height}@objc private func keyboardWillHide(notification: NSNotification){    scrollView.contentInset.bottom = 0}