如何在Facebook上上传图像而不在iOS上进行上传？

Question

到目前为止，这是我的代码，用本地图像发布自定义故事。图像显示在共享对话框中，但帖子没有完成。

NSMutableDictionary<FBOpenGraphObject> *object = [FBGraphObject openGraphObjectForPost];

        object.provisionedForPost = YES;
        object[@"title"]       = @"";
        object[@"type"]        = @"socialsnooker:game_of_snooker";
        object[@"description"] = @"";
        object[@"url"]         = @"http://socialsnooker.com/opengraph.php";
        object[@"image"]       = @[@{@"url": newImage, @"user_generated" : @"false" }];

        NSArray* images = @[@{@"url": newImage, @"user_generated" : @"true" }];

        id<FBOpenGraphAction> action = (id<FBOpenGraphAction>)[FBGraphObject graphObject];

        [action setObject:images forKey:@"image"];
        [action setObject:object forKey:@"game_of_snooker"];
        [action setTags:@[opponent]];

        // Tag a place using the place's id
        id<FBGraphPlace> place = (id<FBGraphPlace>)[FBGraphObject graphObject];
        [place setObjectID:@"36397646443"]; // Q-Masters
        [action setPlace:place];

        // Check if the Facebook app is installed and we can present the share dialog
        FBOpenGraphActionParams *params = [[FBOpenGraphActionParams alloc] init];
        params.action = action;
        params.actionType = @"socialsnooker:score";

        // If the Facebook app is installed and we can present the share dialog
        if([FBDialogs canPresentShareDialogWithOpenGraphActionParams:params]) {
            // Show the share dialog
            [FBDialogs presentShareDialogWithOpenGraphAction:action
                                                  actionType:@"socialsnooker:score"
                                         previewPropertyName:@"game_of_snooker"
                                                     handler:^(FBAppCall *call, NSDictionary *results, NSError *error) {
                                                         if(error) {
                                                             // An error occurred, we need to handle the error
                                                             // See: https://developers.facebook.com/docs/ios/errors
                                                             NSLog(@"Error publishing story: %@", error.description);
                                                         } else {
                                                             // Success
                                                             NSLog(@"result %@", results);
                                                         }
                                                     }];
        } else {
            UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"App Not Installed"
                                                            message:@"The Facebook App couldn't be found on your phone."
                                                           delegate:nil
                                                  cancelButtonTitle:@"OK"
                                                  otherButtonTitles:nil];
            [alert show];
        }

Here is a Screenshot of the Share Dialog

图片确实显示在分享对话框中，我确实收到了帖子ID，但该动作未在Facebook上发布。

非常感谢任何帮助。感谢。