How to manage keyboard when there are UITextFields in UITableView using swift?

I am trying to find a way to avoid keyboard to not block selected UITextField in dynamic UITableViews.

I am aware this is a common issue and there are a lot of answers to this. However, answers I found are either in Obj-C or not involving dynamic UITableView.

My table view being has its own UITableViewCell so UITextFields are connected to it.

Also, I want to refresh the cell when UITextField entry has been made. I can pass that info (I am guessing cell's IndexPath.row?) to the UIViewController and have it listen to change and apply reload cell method?

Here is the related code I have:

class favCell: UITableViewCell, UITextFieldDelegate

@IBOutlet weak var deciPadField: UITextField!

@objc func doneClicked()
updateTotalWorth()
deciPadField.resignFirstResponder()
deciPadField.endEditing(true)


func textFieldDidBeginEditing(_ textField: UITextField)
deciPadField.becomeFirstResponder()


func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool
let currentString: NSString = (textField.text ?? "") as NSString
let newString = currentString.replacingCharacters(in: range, with: string)
return newString.count <= 10


func textFieldShouldReturn(_ textField: UITextField) -> Bool
updateTotalWorth()
deciPadField.resignFirstResponder()
return true


private func textViewDidEndEditing(_ textView: UITextView)
updateTotalWorth()
deciPadField.endEditing(true)




UPDATE:

If I can access my ViewControllers view from UITableViewCell, below code will do the trick:

func animateTextField(textField: UITextField, up: Bool)
let movementDistance:CGFloat = -130
let movementDuration: Double = 0.3
var movement:CGFloat = 0

if up
movement = movementDistance
else
movement = -movementDistance

UIView.beginAnimations("animateTextField", context: nil)
UIView.setAnimationBeginsFromCurrentState(true)
UIView.setAnimationDuration(movementDuration)

// Below line giving error, could not find the view. My ListVC.view should be referred to.
self.view.frame = self.view.frame.offsetBy(dx: 0, dy: movement)

UIView.commitAnimations()



func textFieldDidBeginEditing(textField: UITextField)
self.animateTextField(textField: textField, up:true)


func textFieldDidEndEditing(textField: UITextField)
self.animateTextField(textField: textField, up:false)



Thank you!

UITableViewController

UITableView

UIViewController

1 Answer
1

Well I finally figured out how to solve this. I implemented this answer: https://stackoverflow.com/a/41040630/4441676

Here is the solved code:

Inside ViewController's ViewDidLoad added two observers as below:

// Notification Observers
NotificationCenter.default.addObserver(self, selector: #selector(ListVC.keyboardWillShow(notification:)), name: Notification.Name.UIKeyboardDidShow, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(ListVC.keyboardWillHide(notification:)), name: Notification.Name.UIKeyboardDidHide, object: nil)


And added related two functions:

@objc func keyboardWillShow(notification: Notification)
if let keyboardHeight = (notification.userInfo?[UIKeyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue.height
tableView.contentInset = UIEdgeInsetsMake(0, 0, keyboardHeight, 0)



@objc func keyboardWillHide(notification: Notification)
UIView.animate(withDuration: 0.2, animations:
// For some reason adding inset in keyboardWillShow is animated by itself but removing is not, that's why we have to use animateWithDuration here
self.tableView.contentInset = UIEdgeInsetsMake(0, 0, 0, 0)
)



In the UITableViewCell where UITextFields are connected, simply implement UITextField Delegate and add related Notification.posts when keyboard will show/hide:

deciPadField.delegate = self

func textFieldDidBeginEditing(_ textField: UITextField)
NotificationCenter.default.post(name: Notification.Name.UIKeyboardDidShow, object: self)


func textFieldDidEndEditing(_ textField: UITextField)
NotificationCenter.default.post(name: Notification.Name.UIKeyboardDidHide, object: self)



I have inputAccessoryView, so dismissing keyboard handled via following:

// Decipad config for adding Done button above itself
let toolBar = UIToolbar()
toolBar.sizeToFit()
let flexiableSpace = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.flexibleSpace, target: nil, action: nil)
let doneButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.done, target: self, action: #selector(self.doneClicked))
toolBar.setItems([flexiableSpace, doneButton], animated: false)

@objc func doneClicked()
updateTotalWorth()
deciPadField.resignFirstResponder()
deciPadField.endEditing(true)



Hope this would help for someone else.

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