替换 CloudKit 记录时遇到问题

Posted 2023-02-24

【中文标题】替换 CloudKit 记录时遇到问题

【英文标题】：Trouble Replacing CloudKit Records

【发布时间】：2016-10-27 01:00:55

【问题描述】：

我在“if (NSKeyedUnarchiver.unarchiveObject(with: loadedData as! Data) as? CKRecord) != nil”行收到致命错误：“无法将 'NSTaggedPointerString' 类型的值转换为 'NSData'”。

当我尝试将 locationRecord 保存为默认值时，还有另一个致命错误：“尝试将非属性列表对象设置为关键 locationData 的 NSUserDefaults/CFPreferences 值”。

var locationRecord = CKRecord(recordType: "location")

func getRecordToUpdate(_ locations:CLLocation)

    if defaults1.object(forKey: "locationData") == nil
        locationRecord.setObject(locations, forKey: "location")
        defaults1.set(locationRecord, forKey: "locationData")
        self.updateLocationRecord(locations: locations)
    else
        if let loadedData = defaults1.object(forKey: "locationData") 
            print("continue")
            if (NSKeyedUnarchiver.unarchiveObject(with: loadedData as! Data)) != nil
            
                let publicDB = CKContainer.default().publicCloudDatabase
                publicDB.fetch(withRecordID: locationRecord.recordID,completionHandler: 
                    (record, error) in
                    if error == nil
                    
                        publicDB.delete(withRecordID: (record?.recordID)!, completionHandler: 
                            (record, error) in
                            if(error == nil)
                                print("old record delete")
                                self.locationRecord.setObject(locations, forKey: "location")
                                self.defaults1.set(self.locationRecord, forKey: "locationData")
                                self.updateLocationRecord(locations: locations)
                            
                            else
                            
                        )
                    else
                        print("Error fetching previous record")
                        
                )
            
        
    

    func updateLocationRecord(locations: CLLocation)
    
        locationRecord.setObject(locations, forKey: "location")
        let publicData = CKContainer.default().publicCloudDatabase
        publicData.save(locationRecord, completionHandler:  record, error in
        )
        if error == nil
        
            print("Location saved")
        
    

【问题讨论】：

您必须查询现有记录并更新它。您每次都在创建一个新的CKRecord。

我如何确定正在获取的是用户记录？ @rmaddy

您的location 记录类型需要适当的字段。现在看起来你只有一个 location 字段。因此，您所拥有的只是一堆“位置”记录，其中只有一个 CLLocation 字段。您无法知道给定记录的用途。

您能否提供一个示例，说明如何使用正确的参数初始化记录。 @rmaddy

这取决于您和您的需求。

【参考方案1】：

这是最终为我工作的代码：

if let loadedData = defaults1.object(forKey: "locationData") as? Data 
                let litt = NSKeyedUnarchiver.unarchiveObject(with: loadedData) as! CKRecord
                let publicDB = CKContainer.default().publicCloudDatabase
                    publicDB.fetch(withRecordID: litt.recordID ,completionHandler: 
                        (record, error) in
                        if error == nil
                        
                            publicDB.delete(withRecordID: (record?.recordID)!, completionHandler: 
                                (record, error) in
                                if(error == nil)
                                    print("old record delete")
                                    let id = self.locationRecord.recordID.recordName
                                    self.locationRecord.setObject(locations, forKey: "location")
                                    self.defaults1.set(id, forKey: "locationData")
                                    self.updateLocationRecord(locations: locations)
                                
                                else
                                
                            )
                        else
                            print("Error fetching previous record")
                            
                    )