title: Using UIPickerView as inputView of a custom UIView
body: <p>I need guidance because it seems like I've misunderstood some concepts.
  All I'd like to achieve is to have a UIPickerView as the inputView of a UITextField. It's easily done by <code>self.textField.inputView = self.pickerView</code>. The problem with this is that you still have a blinking cursor and that a device with a BT keyboard can still type text in the textfield.
  So I've read about custom UIViews that can act as First Responders. I've subclassed UIView and added <code>canBecomeFirstResponder</code>, <code>canResignFirstResponder</code>, <code>becomeFirstResponder</code> and <code>resignFirstResponder</code>, all of them returning yes. Problem is, when I tap the view, nothing happens.
  Defining a custom <code>inputView</code> didn't help, it just acts as if nothing happened. </p>
  
  <p>Any guidance is appreciated.
  Thanks,
  Z.</p>