How do I make a UIDatePicker display specific dates?

My application has a need to let the user choose a date from a list of dates conforming to a certain pattern. For instance, they may need to choose a monday from a list Monday's for a month. Is there a way to get a UIDatePicker to limit date choices to a certain subset or should I just use a UIPickerView?

From stackoverflow drewh

• You cannot limit which dates are selectable in a UIDatePicker. You could change the date when the value changed event is sent, but since the user cannot tell which dates are "good" and which are not, it's a bad UI choice to do so.

  Use a UIPickerView of your own making instead.

  From millenomi