title: How do you clear a textfield box after going back from a navigation stack?
body: <p>For example, my home login screen has two textfield boxes for username and password. After logging in, and going to my second view controller, I have a logout button. Pressing the logout button takes me back to the root view controller (log in screen). However, the textfields are still occupied by the username entries. Is there a way to clear that automatically? </p>