title: UIDatePicker and previous view
body: <p>As with the settings page, I have a UI that displays a list of parameters, one of which is a date. When the user presses the row containing the date, a controller displaying a UIDatePicker is pushed. </p>
  
  <p>What is the best way to update the table row with the selected value of the UIDatePicker when the user presses the back button to go back to the list of parameters.</p>