ios - iOS-Facebook Open Graph Api —确保照片是用户生成的

我正在尝试实现以下目标:

这需要打开图请求看起来像这样:
(https://developers.facebook.com/docs/opengraph/howtos/adding-photos-to-stories/)

POST /me/cookbook:eat?
  recipe=http://www.example.com/recipes/pizza/&
  image[0][url]=http://www.example.com/recipes/pizza/pizza.jpg&
  image[0][user_generated]=true&
  image[1][url]=http://www.example.com/recipes/pizza/pizza2.jpg&
  image[1][user_generated]=true&
  access_token=VALID_ACCESS_TOKEN

但是，使用以下代码:(来自此处的易破解教程:
https://developers.facebook.com/docs/tutorials/ios-sdk-tutorial/publish-open-graph-story/)
我不知道如何将用户生成的标志设置为true。因此，照片显得很小。

- (void)postOpenGraphActionWithPhotoURL:(NSString*)photoURL
{
    // First create the Open Graph meal object for the meal we ate.
    id<SCOGMeal> mealObject = [self mealObjectForMeal:self.selectedMeal];

    // Now create an Open Graph eat action with the meal, our location,
    // and the people we were with.
    id<SCOGEatMealAction> action =
        (id<SCOGEatMealAction>)[FBGraphObject graphObject];
    action.meal = mealObject;
    if (self.selectedPlace) {
        action.place = self.selectedPlace;
    }
    if (self.selectedFriends.count > 0) {
        action.tags = self.selectedFriends;
    }
    if (photoURL) {
        NSMutableDictionary *image = [[NSMutableDictionary alloc] init];
        [image setObject:photoURL forKey:@"url"];

        NSMutableArray *images = [[NSMutableArray alloc] init];
        [images addObject:image];

        action.image = images;
    }

    // Create the request and post the action to the
    // "me/<YOUR_APP_NAMESPACE>:eat" path.
    [FBRequestConnection startForPostWithGraphPath:@"me/<YOUR_APP_NAMESPACE>:eat"
                             graphObject:action
                       completionHandler:
     ^(FBRequestConnection *connection, id result, NSError *error) {
         NSString *alertText;
         if (!error) {
             alertText = [NSString stringWithFormat:
                             @"Posted Open Graph action, id: %@",
                             [result objectForKey:@"id"]];
         } else {
             alertText = [NSString stringWithFormat:
                             @"error: domain = %@, code = %d",
                             error.domain, error.code];
         }
         [[[UIAlertView alloc] initWithTitle:@"Result"
                                     message:alertText
                                    delegate:nil
                           cancelButtonTitle:@"Thanks!"
                           otherButtonTitles:nil]
          show];
     }
     ];
}

这里，meatobject符合FBGraphObject协议。使用与我继承的协议相同的方法，如何将用户生成的标志设置为true？该文档没有提及任何“user_generation”。

还是不应该使用协议并根据所需的发布参数手动设置字符串格式？

编辑:
我尝试使用字符串而不是FBOpenGraph对象来手动执行此操作，并且成功复制了相同的功能。

但是，我无法显示多张照片或将其设置为用户生成。

SCProtocols.h:

#import <Foundation/Foundation.h>
#import <FacebookSDK/FacebookSDK.h>

@protocol SCOGMeal<FBGraphObject>

@property (retain, nonatomic) NSString *id;
@property (retain, nonatomic) NSString *url;

@end


@protocol SCOGEatMealAction<FBOpenGraphAction>

@property (retain, nonatomic) id<SCOGMeal> meal;

@end

最佳答案

您应该可以替换代码:

if (photoURL) {
    NSMutableDictionary *image = [[NSMutableDictionary alloc] init];
    [image setObject:photoURL forKey:@"url"];

    NSMutableArray *images = [[NSMutableArray alloc] init];
    [images addObject:image];

    action.image = images;
}

与:

if (photoURL) {
    NSMutableDictionary *image = [[NSMutableDictionary alloc] init];
    [image setObject:photoURL forKey:@"url"];

    [image setObject:@"true" forKey:@"user_generated"]; // <======= ***add this line***

    NSMutableArray *images = [[NSMutableArray alloc] init];
    [images addObject:image];

    action.image = images;
}