Scrollview and Keyboard in Swift

Scrollview doesn't move up when keyboard appears several times

friend please try this piece of code. Hope it will work for you too. I am using this and it works well.

 override func viewDidLoad(){
    NotificationCenter.default.addObserver(self,selector: #selector(self.keyboardDidShow(notification:)),
    name: UIResponder.keyboardDidShowNotification, object: nil)
    NotificationCenter.default.addObserver(self,selector: #selector(self.keyboardDidHide(notification:)),
    name: UIResponder.keyboardDidHideNotification, object: nil)
}

//MARK: Methods to manage keybaord
@objc func keyboardDidShow(notification: NSNotification) {
    var info = notification.userInfo
    let keyBoardSize = info![UIKeyboardFrameEndUserInfoKey] as! CGRect
    scrollView.contentInset = UIEdgeInsetsMake(0.0, 0.0, keyBoardSize.height, 0.0)
    scrollView.scrollIndicatorInsets = UIEdgeInsetsMake(0.0, 0.0, keyBoardSize.height, 0.0)
}

@objc func keyboardDidHide(notification: NSNotification) {
    
    scrollView.contentInset = UIEdgeInsets.zero
    scrollView.scrollIndicatorInsets = UIEdgeInsets.zero
}

I have written this code for swift 4.0.

How to make scrollView scrolling only if keyboard appears in swift

You just need to set the contentOffset of your ScrollView right after the keyboard is hidden.

Create a variable to store offsetBeforeShowKeyboard

var offsetBeforeShowKeyboard: CGFloat?

When view is initially loaded:

self.scrollView.isScrollEnabled = false

When select any TextField:

public func textFieldDidBeginEditing(_ textField: UITextField) {
    self.scrollView.isScrollEnabled = true
    if (self.offsetBeforeShowKeyboard == nil) {
        self.offsetBeforeShowKeyboard = self.scrollView.contentOffset
    }
 }

When keyboard is hidden

 @objc func onKeyboardDisappear(_ notification: NSNotification) {
    self.scrollView.isScrollEnabled = false
    if let offset = self.offsetBeforeShowKeyboard {
        self.scrolView.setContentOffset(offset, animated: true)    
    }
    self.offsetBeforeShowKeyboard = nil
 }

Handling keyboard events when view controller has a scrollview inside

The problem in your didReceiveKeyboardNotification method. You are using the same method for handling show/hide keyboard, and in both cases, you make scrollView.contentInset.bottom = keyboardOverlap so after keyboard will hide your inset will be set to 0. This is more correct way:

        if notification.name == UIResponder.keyboardWillHideNotification {
            let inset = tabBarController?.tabBar.frame.size.height as! CGFloat //Tabbar height
            scrollView.contentInset.bottom = inset
            scrollView.verticalScrollIndicatorInsets.bottom = inset
        }

        if notification.name == UIResponder.keyboardWillShowNotification {
            scrollView.contentInset.bottom = keyboardOverlap
            scrollView.verticalScrollIndicatorInsets.bottom = keyboardOverlap
        }

scrollView problem with UITextView when keyboard hide/show notification

The reason of this issue is explained here, so if you want to use UITextView inside a UIScrollView then uncheck the Scrolling Enabled from right menu inspector or set it False from the code.

Sample Image

How to make scrollview up to keyboard height according to iPhone sizes in swift

Remove background colour of scrollview in your storyboard .

You can follow my approach for more clarifications .

moving-keyboard-when-editing-multiple-textfields-with-constraints-swift

UIScrollView scroll up on Keyboard

Replace keyboardWasShown function with the below function :

 func keyboardWasShown(notification: NSNotification)
{
    var userInfo = notification.userInfo!
    var keyboardFrame:CGRect = (userInfo[UIKeyboardFrameBeginUserInfoKey] as! NSValue).cgRectValue
    keyboardFrame = self.convert(keyboardFrame, from: nil)
    self.mainScroll.contentOffset = CGPoint(x: 0, y: keyboardFrame.size.height - Any number that fits your need.)
}

In keyBoardWillHide :

self.mainScroll.contentOffset = CGPoint(x: 0, y: 0)

Hope it will help.
Happy Coding!

Keyboard covers UITextView

For UITextView it doesn't work, so i do this with contentOffset.

Swift 5

extension SummaryViewController {
    
    private func registerKeyboardNotifications() {
        NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillShow(_:)), name: UIControl.keyboardWillShowNotification, object: nil)
        NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillHide(_:)), name: UIControl.keyboardWillHideNotification, object: nil)
    }

    @objc func keyboardWillShow(_ notification: Notification) {
        guard let keyboardFrameValue = notification.userInfo?[UIResponder.keyboardFrameBeginUserInfoKey] as? NSValue else { return }
        let keyboardFrame = view.convert(keyboardFrameValue.cgRectValue, from: nil)
        scrollView.contentOffset = CGPoint(x: 0, y: keyboardFrame.size.height)
    }

    @objc func keyboardWillHide(_ notification: Notification) {
        scrollView.contentOffset = .zero
    }
}