我为日期选择器创建了一个单独的类。importUIKitprotocolMYDatePickerViewControllerDelegate{funcdidFinishSelectingDate(selectedDate:NSDate)}classMYDatePickerViewController:UIViewController{@IBOutletweakvarcontainerView:UIView!@IBOutletweakvardatePicker:UIDatePicker!@IBOutletweakvarnavigationBar:UINavigationBar!varda