Question

当我输入下面的查询时，我得到一个包含相册中所有照片的Ilist对象

"SELECT pid, src_small, src_big FROM photo WHERE aid = '100003240429199_12493' "

当我在下面输入这个时，我得到0结果。

"SELECT pid, src_small, src_big FROM photo WHERE aid = '730676042_444686' "

我正在为专辑拉上封面照片。这是代码：

var query = string.Format("SELECT pid, src_small, src_big FROM photo WHERE aid = '{0}' ", usrid + "_" + albid);
var result2 = (IList<object>)fb.Query(query);
string hold = "", pid = "", small = "", big = "";
foreach (object g in result2)
{
   hold = g.ToString();
   string[] sub = hold.Split(',');
   pid = sub[0].Replace("{\"pid\":\"", "");
   pid = pid.Replace("\"", "");

   small = sub[1].Replace("\"src_small\":\"", "");
   small = small.Replace("\"", "");

   big = sub[2].Replace("\"src_big\":\"", "");
   big = big.Replace("\"}", "");
   th = new FolderExplorer.ThumbNail(usrid + "_" + albid, big, small);
   thmbs.Add(th);
   break;
}
}

为什么查询不适用于较旧的facebook帐户（较短的userId） - 我尝试了多个帐户，结果一致。

Answer 1

我的Facebook帐户较旧，我的相册ID中没有下划线。据我所知，您无法根据用户ID生成相册ID。

你最好运行这样的查询来获取每个用户专辑的所有封面照片

fql?q=SELECT pid, src_small, src_big FROM photo WHERE object_id in (select cover_object_id from album where owner = me())

用于检索照片的FQL查询适用于较新的Facebook帐户，但不适用于较旧的帐户

1 个答案: