title: How to reference the EditText inside a NumberPicker?
body: <p>I need to get the reference to the EditText inside a NumberPicker. I know it's going to be some sort of findViewById on the picker view itself, but I haven't been able to find android's id for it:</p>
  
  <pre><code>final NumberPicker numberPicker = (NumberPicker) view.findViewById(R.id.numberpicker);
  EditText numberPickerEditText = (EditText) numberPicker.findViewById(WHAT IS THE ID???)
  </code></pre>
  
  <p>I know NumberPicker has most of the useful methods for the value etc., but I need some finer control such as displaying the keyboard when the picker opens and I don't think I can do this without a reference to the EditText itself (feel free to correct me if I'm wrong in this!)</p>