blink cursor in textfield without showing keyboard

blink-cursor.swift

 // force blinking the cursor
 self!.inputTextField.inputView = UIView()
 self!.inputTextField.becomeFirstResponder()

//re-enable for when user actually clicks
inputTextField.rx.controlEvent(.touchDown).subscribe(onNext: { [weak self] _ in
      guard let _ = self else { return }
      self!.inputTextField.inputView = nil
      self!.inputTextField.reloadInputViews()
    }).addDisposableTo(rx_disposeBag)

put it under your viewload and for swift 5
note change inputTextField to the your input variable name

  self.inputTextField.becomeFirstResponder()
  //re-enable for when user actually clicks
  let tapGuesture = UITapGestureRecognizer(target: self, action: #selector(InTextFieldTapped(_:)))
  inputTextField.addGestureRecognizer(tapGuesture)

  then after the viewload function add this function
  @IBAction func InTextFieldTapped(_ gesture: UITapGestureRecognizer) {
        if gesture.state == .ended {
            view.endEditing(true)
            inputTextField.inputView = nil 
            inputTextField.becomeFirstResponder()
        }
    }