ios - 尝试在 Swift 中使用来自 CKRecord 的原始数据形式

Question

我正在尝试将从 cloudkit 下载的 CKRecords 转换回它们的原始数据形式(在本例中为 CLLocation)。当我尝试调用第 17 行的函数时，出现错误“无法将‘CKRecord’类型的值转换为预期的参数类型‘CLLocation’”。

func loadLocation(completion: (error:NSError?, records:[CKRecord]?) -> Void)
    {
        let query = CKQuery(recordType: "Location", predicate: NSPredicate(value: true))
        CKContainer.defaultContainer().publicCloudDatabase.performQuery(query, inZoneWithID: nil){
            (records, error) in
            if error != nil {
                print("error fetching locations: \(error)")
                completion(error: error, records: nil)
            } else {
                print("found locations: \(records)")
                completion(error: nil, records: records)
                guard let records = records else {
                    return
                }
                for(var i = 0; i<records.count; i += 1)
                {
                    addBoundry(records[i])
                }
            }
        }
    }

Answer 1

通过将记录的键设置为您的位置来保存您的记录:

recordThatYouAreSaving.setObject(yourLocation, forKey: "location")

然后获取:

addBoundry(records[i]["location"] as! CLLocation)