ios – 使用Swift对CloudKit进行CKReference

对于朋友,我有两个栏目,Me和MyFriend. MyFriend是包含帐户RecordID的Reference.

如何检索作为我朋友的帐户名称？
我需要查询Friends以@L_205_9@me是我的RecordID的所有记录,然后我需要使用这些记录的引用来从Account表中获取Names.

我尝试了以下但没有得到任何结果：

let preDicate = NSPreDicate(format: "Me = %@",recordID)
let query = CKQuery(recordType: "Friends",preDicate: preDicatE)
publicDB.performQuery(query,inZoneWithID: nil) { (results,error) -> Void in
    if error != nil {
        println("Error fetching from Friends table: \(error.description)")
    } else {
        for friend in results {
            var key = friend.objectForKey("MyFriend") as String
            self.publicDB.fetchRecordWithID(CKRecordID(recordName: key),completionHandler: { (record,error) -> Void in
                if error != nil {
                    println(error.description)
                } else {
                    self.friends.append(record.objectForKey("Name") as String)
                }
            })
        }
        dispatch_semaphore_signal(self.semaphorE)
    }
 }
 dispatch_semaphore_wait(self.semaphore,DISPATCH_TIME_FOREVER)`