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我正在尝试使用新的 SDK 发布这样的图形事件：

   FBSDKAccessToken *token = [FBSDKAccessToken currentAccessToken];
    FBSDKGraphRequestConnection *connection = [[FBSDKGraphRequestConnection alloc] init];

    NSMutableDictionary<FBGraphObject> *action = [FBGraphObject graphObject];


    action[@"event"] = @"http://samples.ogp.me/680289198752391";

    FBSDKGraphRequest *request = [[FBSDKGraphRequest alloc] initWithGraphPath:@"me/friendlish:add" parameters:action tokenString:token.tokenString version:@"v2.3" HTTPMethod:@"POST"];
//    
   [connection addRequest:request completionHandler:^(FBSDKGraphRequestConnection *connection, id result, NSError *error) {
                        if(error)
                            NSLog(@"%@", error);
                        else
                            NSLog(@"%@", result);

                    }];

    [connection start];

一切正常，它发布 - 但是当我尝试将示例实际更改为这样的自定义内容时：

 NSMutableDictionary<FBGraphObject> *action = [FBGraphObject graphObject];
    NSMutableDictionary<FBGraphObject> *event = [FBGraphObject openGraphObjectForPost];
    event[@"og:title"] = @"My Event";
    event[@"og:type"] = @"friendlish:event";
    event[@"og:url"] = @"http://www.facebook.com";
    event[@"og:description"]  = @"Yaba daba doo";
    event[@"og:image"] = @"https://fbstatic-a.akamaihd.net/images/devsite/attachment_blank.png";
    action[@"event"] = event;

在调用连接 NSLogs 之前，我在控制台中收到第一个错误：

不支持的 FBSDKGraphRequest 附件：{ data = { }; "fbsdk:create_object" = 1; "og:description" = "Yaba daba doo"; "og:image" = " https://fbstatic-a.akamaihd.net/images/devsite/attachment_blank.png "; "og:title" = "我的活动"; "og:type" = "friendlish:event"; “og:url”=“ http://www.facebook.com ”；}，跳过。

然后来自连接方法NSLog的错误：

错误域=NSURLErrorDomain 代码=-1002“不支持的 URL”UserInfo=0x174077080 {NSLocalizedDescription=不支持的 URL，NSUnderlyingError=0x17445f920“不支持的 URL”}

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