ios - Facebook 点赞帖子

Question

我正在尝试在我的 ios 应用程序上添加点赞按钮。当我在图形 api 资源管理器中点击 url 时，它工作正常，并且给了我真实的响应。但是当我在我的代码中点击它时，什么也没发生

(void)likeFacebookPost:(NSString*)likeID
{

    NSString *theWholeUrl = [NSURL URLWithString:[NSString stringWithFormat:
                                                  @"%@/%@/likes&access_token=%@",
                                                  GRAPH_API_BASEURL,likeID,
                                                  [_facebookToken stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]];



    NSURL *facebookUrl = [NSURL URLWithString:theWholeUrl];

    NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:facebookUrl];
    [req setHTTPMethod:@"POST"];

    NSURLResponse *response;
    NSError *err;
    NSData *responseData = [NSURLConnection sendSynchronousRequest:req returningResponse:&response error:&err];
    NSString *content = [NSString stringWithUTF8String:[responseData bytes]];

    NSLog(@"responseData: %@", content);

}