Using DatePicker view in Calabash iOS [http://imars.info/using-datepicker-view-in-calabash-ios-ios6/]

datepicker_calabash_ios6

def select_date(date_string)
  date = Date.parse(date_string)
  query("view:'_UIDatePickerView'", [{:selectRow => date.month - 1}, {:inComponent => 0}, {:animated => 1}])
  query("view:'_UIDatePickerView'", [{:selectRow => date.day - 1},   {:inComponent => 1}, {:animated => 1}])
  query("view:'_UIDatePickerView'", [{:selectRow => date.year - 1},  {:inComponent => 2}, {:animated => 1}])
  sleep(0.4)
  # the query does not create a UIControlEventValueChanged event, so we have to do a touch event
  picker_scroll_up_on_column 0
  sleep(0.4)
  picker_scroll_down_on_column 0
  sleep(0.4)
end