How to show And dismiss keyboard iOS programmatically with Swift in iOS app.

1. Dismiss keyboard with Keyboard Return key

override func viewDidLoad() {

        super.viewDidLoad()

        textfield.delegate = self

        // Do any additional setup after loading the view.

    }

    

  func textFieldShouldReturn(_ textField: UITextField) -> Bool {

        

        textField.resignFirstResponder()

        

        return true

        

    }

2. Dismiss keyboard with Tap Any in View Controller 

• Using touchesBegan

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {

        super.touchesBegan(touches,

                           with: event)

        self.view.endEditing(true)

    }

• Using a Tap gesture

let tapGesture = UITapGestureRecognizer(target: self,

                                            action: #selector(hideKeyboard))

    tapGesture.cancelsTouchesInView = false

    self.view.addGestureRecognizer(tapGesture)

    @objc

    private func hideKeyboard() {

        self.view.endEditing(true)

    }

3. Dismiss keyboard with Scroll

let tableview = UITableView(frame: self.view.bounds)

    tableview.delegate = self

    tableview.dataSource = self

    tableview.keyboardDismissMode = .onDrag