我的第一个ViewController中有这个prepareForSegue，里面有一个枚举overridefuncprepareForSegue(segue:UIStoryboardSegue,sender:AnyObject?){enumTypeOfSegue{caseEdit,Create}ifletDestViewController:DetailViewController=segue.destinationViewControlleras?DetailViewControllerwheresegue.identifier=="EditItem"{letedit=TypeOf