Question

我正在使用核心数据制作应用。
这是Facebook应用程序，所以我将用户信息保存到核心数据我想将个人资料图片添加到用户信息数据中。

    for (UserInfo *info in fetchedObjects) {
        if ([info.fbId isEqualToString:delegate.currentUserInfo.fbId]) {
            info.details.photos.image  = [NSData dataWithContentsOfURL:url];
            info.details.photos.imageId = [result objectForKey:@"id"];
            info.details.photos.details = info.details;

            delegate.currentUserInfo = info;

            for (UserInfo *info in fetchedObjects) {
                NSLog(@"currentUserInfo : %@", info);
                NSLog(@"curretnUserDetails : %@", info.details);
                NSLog(@"currentUserPhoto : %@", info.details.photos);
            }

            if (![context save:&error]) {
                NSLog(@"Whoops, couldn't save: %@", [error localizedDescription]);
            }
        }
    }

像这样，我将数据添加到与FB用户ID对应的核心数据（称为照片的商店）。

因此，中间的NSLog显示了良好的photoInfo数据，但是当我重新启动应用程序时，没有照片数据。
我几天没有解决这个问题。救救我！

-edited

enter image description here

DataModel的组织方式与此图片类似。
我只使用一个上下文，我是新手所以我无法理解所有感谢的评论。

-edited2

 if (!beExist) {
        UserInfo *userInfo = [NSEntityDescription insertNewObjectForEntityForName:@"UserInfo" inManagedObjectContext:context];
        userInfo.name = [myInfoDic objectForKey:@"name"];
        userInfo.fbId = [myInfoDic objectForKey:@"id"];
        userInfo.type = @"user";
        UserDetails *userDetails = [NSEntityDescription insertNewObjectForEntityForName:@"UserDetails" inManagedObjectContext:context];
        userDetails.gender = [myInfoDic objectForKey:@"gender"];
        userDetails.work = [[[[myInfoDic objectForKey:@"work"] objectAtIndex:0] objectForKey:@"employer"] objectForKey:@"name"];
        NSArray *eduArray = [myInfoDic objectForKey:@"education"];
        userDetails.education = [[[eduArray objectAtIndex:eduArray.count-1] objectForKey:@"school"] objectForKey:@"name"];
        userDetails.birthday = [myInfoDic objectForKey:@"birthday"];
        userDetails.location = [[myInfoDic objectForKey:@"location"] objectForKey:@"name"];
        PhotoInfo *photoInfo = [NSEntityDescription insertNewObjectForEntityForName:@"PhotoInfo" inManagedObjectContext:context];

        userDetails.info = userInfo;
        userInfo.details = userDetails;
        userInfo.details.photos = photoInfo;
        photoInfo.details = userDetails;

        delegate.currentUserInfo = userInfo;

        if (![context save:&error]) {
            NSLog(@"Whoops, couldn't save: %@", [error localizedDescription]);
        }

我保存了这样的用户信息。我在AppDelegate中创建了上下文。我为Core数据制作了项目，因此Xcode制作了该代码。

我可以看到这个日志

2012-05-04 00:40:58.997 Feek[16423:fb03] currentUserPhoto : <PhotoInfo: 0x6d15d60> (entity: PhotoInfo; id: 0x6d18550 <x-coredata://2ED200FE-D799-4C66-A0AC-5BE1BC426439/PhotoInfo/p1> ; data: {
details = "0x8830ca0 <x-coredata://2ED200FE-D799-4C66-A0AC-5BE1BC426439/UserDetails/p1>";
image = <ffd8ffe0 00104a46 49460001 02000001 00010000 fffe0004 2a00ffe2 021c4943 435f5052 4f46494c 45000101 0000020c 6c63>;
imageId = 334168116641714;
})

我认为这是核心数据接受数据，但在杀死我的应用后它不会保留。

NSLog显示值，但上下文不保存数据

0 个答案: