Question

注意：-棕色的色彩单元是我的播放列表

 // First Entity
    NSManagedObjectContext *context = [self managedObjectContext];
    NSManagedObject *devices = [NSEntityDescription insertNewObjectForEntityForName:@"MoviesPlayList" inManagedObjectContext:context];

     //Second Entity
    NSManagedObject *devices1 = [NSEntityDescription insertNewObjectForEntityForName:@"MoviesInsidePlaylist" inManagedObjectContext:context];



    [devices setValue:self.createPlaylistNameTf.text forKey:@"playlistName"];
//     [devices setValue:self.createPlaylistNameTf.text forKey:@"pName"];
//     [devices setValue:self.createPlaylistNameTf.text forKey:@"pPath"];
    NSString *playlistNumber = [NSString stringWithFormat:@"%d",self.SelectedTag];
     [devices setValue:playlistNumber forKey:@"pId"];

    [self fetchMovieDetail];

  //  NSLog(@"%@",[[self.moviesarray objectAtIndex:self.SelectedTag]valueForKey:@"name"]);

    [devices1 setValue:[[self.moviesarray objectAtIndex:self.SelectedTag]valueForKey:@"name"] forKey:@"mName"];
    [devices1 setValue:[[self.moviesarray objectAtIndex:self.SelectedTag]valueForKey:@"path"] forKey:@"mPath"];
    [devices setValue:devices1 forKey:@"movieList"];


    // Save Managed Object Context
    NSError *error = nil;

    [devices1.managedObjectContext save:&error];
    if (![devices1.managedObjectContext save:&error]) {
        NSLog(@"Unable to save managed object context.");
        NSLog(@"%@, %@", error, error.localizedDescription);
    }

我创建了一个核心数据关系名称movieList，并将该对象添加到名为MoviesPlaylist的主要Coredata实体上

问题：-我想将每个播放列表的内部数据都分开。

但是现在，当我创建播放列表时，所有播放列表中的内部数据都是相同的。

我想区分每个播放列表的数据，我是核心数据的新手，请告诉我方法。或解决方案

如何区分CoreData中保存的实体数据

0 个答案: