我将值添加到我的核心数据模型中的 2 个实体中，我面临的问题是在访问详细视图时尝试正确检索 NSSet 并定位关联的字符串。我只想在 uitableview 中显示结果。我相信这些值与与实体的关系一起被正确添加，因为我之前从论坛获得了帮助，因为它可以在此处查看。我正在尝试在详细视图上调用相关的RoutinesDetail数据。
我知道 seague 工作正常，因为我能够根据 selectedRow 设置标题，因此它在视图控制器之间传递数据。我可以使用来回忆“例程”数据Ex.routinename
使用以下调试并尝试分配 NSSet，因为我阅读了一种显示它的方法，allObjects但这不起作用：
NSArray *test= [Ex.routinedet allObjects];
NSSortDescriptor *desc = [[NSSortDescriptor alloc] initWithKey:@"image"
ascending:YES];
test = [test sortedArrayUsingDescriptors:[NSArray arrayWithObject:desc]];
NSLog(@"Image *** %@",test);
这会产生以下报告，这让我质疑我是否做得对？
“<RoutinesDetails：0x7453d80>（实体：RoutinesDetails；id：0x74531f0 <x-coredata://C075DDEC-169D-46EC-A4B7-972A04FCED70/RoutinesDetails/p1>；数据：<fault>）”）
所以基本上我正在研究如何检索RoutinesDetails。任何建议将不胜感激。
**
如果需要这里是相关的代码
**
例程.h - NSManagedObject
@class RoutinesDetails;
@interface Routines : NSManagedObject
@property (nonatomic, retain) id routinename;
@property (nonatomic, retain) NSSet *routinedet;
@end
@interface Routines (CoreDataGeneratedAccessors)
- (void)addRoutinedetObject:(RoutinesDetails *)value;
- (void)removeRoutinedetObject:(RoutinesDetails *)value;
- (void)addRoutinedet:(NSSet *)values;
- (void)removeRoutinedet:(NSSet *)values;
@end
RoutinesDetails.h - NSManagedObject
@class Routines;
@interface RoutinesDetails : NSManagedObject
@property (nonatomic, retain) NSString * image;
@property (nonatomic, retain) NSString * name;
@property (nonatomic, retain) Routines *routineinfo;
@end
FBCDRoutineDetailViewController（对不起，如果它的代码太多）
#import "FBCDRoutineDetailViewController.h"
#import "FBCDRoutineViewController.h"
#import "Routines.h"
#import "RoutinesDetails.h"
@interface FBCDRoutineDetailViewController ()
@end
@implementation FBCDRoutineDetailViewController
@synthesize managedObjectContext;
@synthesize fetchedResultsController = _fetchedResultsController;
@synthesize Ex;
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (NSFetchedResultsController *)fetchedResultsController {
if (_fetchedResultsController != nil) {
return _fetchedResultsController;
}
NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
NSEntityDescription *entity = [NSEntityDescription
entityForName:@"RoutinesDetails" inManagedObjectContext:managedObjectContext];
[fetchRequest setEntity:entity];
NSSortDescriptor *sort = [[NSSortDescriptor alloc]
initWithKey:@"name" ascending:NO];
[fetchRequest setSortDescriptors:[NSArray arrayWithObject:sort]];
[fetchRequest setFetchBatchSize:20];
NSFetchedResultsController *theFetchedResultsController =
[[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest
managedObjectContext:managedObjectContext sectionNameKeyPath:nil
cacheName: nil];
self.fetchedResultsController = theFetchedResultsController;
_fetchedResultsController.delegate = self;
return _fetchedResultsController;
}
- (void)viewDidLoad
{
[[self navigationController] setNavigationBarHidden:NO animated:YES];
[super viewDidLoad];
// Do any additional setup after loading the view.
NSArray *test= [Ex.routinedet allObjects];
NSSortDescriptor *desc = [[NSSortDescriptor alloc] initWithKey:@"image"
ascending:YES];
test = [test sortedArrayUsingDescriptors:[NSArray arrayWithObject:desc]];
NSLog(@"Image *** %@",test);
self.title = Ex.routinename;
NSLog(@"Image *** %@",Ex.routinename);
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Table view delegate
- (IBAction)save:(id)sender {
[self dismissViewControllerAnimated:YES completion:nil];
}
- (IBAction)cancel:(id)sender {
[self dismissViewControllerAnimated:YES completion:nil];
}
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the specified item to be editable.
return YES;
}
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{ }
#pragma mark - Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { }
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
id sectionInfo =
[[_fetchedResultsController sections] objectAtIndex:section];
return [sectionInfo numberOfObjects];
}
- (void)configureCell:(UITableViewCell *)cell atIndexPath:(NSIndexPath *)indexPath {
//RoutinesDetails *info = [_fetchedResultsController objectAtIndexPath:indexPath];
NSArray *test= [Ex.routinedet allObjects];
NSSortDescriptor *desc = [[NSSortDescriptor alloc] initWithKey:@"image"
ascending:YES];
test = [test sortedArrayUsingDescriptors:[NSArray arrayWithObject:desc]];
//cell.textLabel.text = info.image;
cell.textLabel.text = [[test objectAtIndex:indexPath.row] name];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"routineCell";
UITableViewCell *cell =
[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
// Set up the cell...
[self configureCell:cell atIndexPath:indexPath];
return cell;
}
任何建议将不胜感激。