iphone - 2 个视图控制器，一个带有项目列表 - 传递给第一个 VC

Question

我有一个标签栏控制器界面，其主要概念是创建一个 ID，通过文本字段添加名称，然后通过推送 segue 将多个用户选择的属性添加到视图控制器。

我已经解决了主要添加 ID 视图控制器和推送 segue 以从详细视图控制器添加单个属性，但现在我想修改场景......

1. 在详细视图控制器上，我有一个程序列表，用户可以选择一个传递回主视图的程序...如何将其设置为“复选框”或多选方法并拥有所有程序选择传回主视图而不仅仅是一个？

2. 我使用核心数据作为我的存储模型以及主要实体“MedRec”与构成 MedRec 数据的其他实体之间的关系——“程序”、“级别”、“日期”等。

   #import "MedRecTVC.h"
   
   #import "MedRec.h"
   
   @implementation MedRecTVC
   
   @synthesize fetchedResultsController = _fetchedResultsController;
   @synthesize managedObjectContext = _managedObjectContext;
   @synthesize selectedMedRec;
   
   -(void)setupFetchedResultsController
   
   {
   // 1 - Decide what Entity you want
   
   NSString *entityName = @"MedRec"; //Put your entity name here
   NSLog(@"Setting up a Fetched Results Controller for the Entity named %@", entityName);
   
   // 2 - Request the Entity
   
   NSFetchRequest *request = [NSFetchRequest fetchRequestWithEntityName:entityName];
   
   // 3 - Filter it if you want
   
   //request.predicate = [NSPredicate predicateWithFormat:@"Level.name = Blah"];
   
   // 4 - Sort it if you want
   
   request.sortDescriptors = [NSArray arrayWithObject:[NSSortDescriptor            sortDescriptorWithKey:@"number" ascending:YES selector:@selector(localizedCaseInsensitiveCompare:)]];
   
   // 5 - Fetch it
   
   self.fetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:request managedObjectContext:self.managedObjectContext sectionNameKeyPath:nil cacheName:nil];
   
   [self performFetch];
   
   }
   
   - (void)viewWillAppear:(BOOL)animated
   {
   [super viewWillAppear:animated];
   [self setupFetchedResultsController];
   }
   
   
   - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
   {
   static NSString *CellIdentifier = @"MedRec Cell";
   UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
   
   if (cell == nil) {
   cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
   }
   
   //configure the cell
   
   //decide the order of table cell text and detail text
   
   MedRec *medrec = [self.fetchedResultsController objectAtIndexPath:indexPath];
   NSString *number = [NSString stringWithFormat:@"%@", medrec.number];
   cell.textLabel.text = number;
   cell.detailTextLabel.text = medrec.inLevel.level1;
   
   return cell;
   }
   
   - (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
   
   if (editingStyle == UITableViewCellEditingStyleDelete) {
   
   [self.tableView beginUpdates]; // Avoid  NSInternalInconsistencyException
   
   // Delete the role object that was swiped
   MedRec *medrecToDelete = [self.fetchedResultsController objectAtIndexPath:indexPath];
   NSLog(@"Deleting (%@)", medrecToDelete.number);
   [self.managedObjectContext deleteObject:medrecToDelete];
   [self.managedObjectContext save:nil];
   
   // Delete the (now empty) row on the table
   [self.tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
   [self performFetch];
   
   [self.tableView endUpdates];
   }
   }
   
   - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
   {
   if ([segue.identifier isEqualToString:@"Add MedRec Segue"])
   {
   NSLog(@"Setting MedRecTVC as a delegate of AddMedRecTVC");
   
   AddMedRecTVC *addMedRecTVC = segue.destinationViewController;
   addMedRecTVC.delegate = self;
   addMedRecTVC.managedObjectContext = self.managedObjectContext;
   }
   
   else if ([segue.identifier isEqualToString:@"MedRec Detail Segue"])
   {
   NSLog(@"Setting MEdRecTVC as a delegate of MedRecDetailTVC");
   MedRecDetailTVC *medrecDetailTVC = segue.destinationViewController;
   medrecDetailTVC.delegate = self;
   medrecDetailTVC.managedObjectContext = self.managedObjectContext;
   
   NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
   self.selectedMedRec = [self.fetchedResultsController objectAtIndexPath:indexPath];
   
   NSLog(@"Passing selected medrec (%@) to MedRecDetailTVC", self.selectedMedRec.number);
   medrecDetailTVC.medrec = self.selectedMedRec;
   }
   
   else {
   NSLog(@"Unidentified Segue Attempted!");
   }
   
   }
   
   
   - (void)theSaveButtonOnTheAddMedRecTVCWasTapped:(MedRecDetailTVC *)controller
   {
   //refresh the table
   //close delegated view
   [controller.navigationController popViewControllerAnimated:YES];
   
   }
   
   - (void)theSaveButtonOnTheMedRecDetailTVCWasTapped:(MedRecDetailTVC *)controller
   {
   [controller.navigationController popViewControllerAnimated:YES];
   }
   
   
   
   @end