title: How to replace UIPickerView with native keyboard back?
body: <p>I need to dynamically change the input for UITextField: keyboard with pickerView and back (pickerView with keyboard).</p>
  
  <p>I know how to substitute keyboard with pickerView - via <code>input</code> property of textfield.</p>
  
  <p>But I don't know to substitute pickerView with keyboard back. How can I do this?</p>
  
  <p>The flow is following:</p>
  
  <ul>
  <li>user need to enter some value into textfield (typing via keyboard)</li>
  <li>then I'll show them some clarification options via pickerView, user select any option and it will appear into textfield</li>
  <li>then user should be able to edit the selected value in the textfield via native keyboard</li>
  </ul>
  
  <p>Thank you</p>