Switch之iCloud的使用（CKDatabase）（二）

CKDatabase的简单使用

这里需啊哟配合一使用，首先确定用户开启了iCloud，并且iCloud可用

//添加一条记录
    func addRecord(){
        let id = CKRecord.ID.init(recordName: "1")//设置索引
        let volvo = CKRecord.init(recordType: "person", recordID: id)
        volvo.setObject("liu" as __CKRecordObjCValue, forKey: "name")
        volvo.setObject(18 as __CKRecordObjCValue, forKey: "age")
        volvo.setObject(false as __CKRecordObjCValue, forKey: "isMan")
        
        database.save(volvo) { (record, error) in
            if error == nil{
                print("成功")
            }else{
                print("失败")
            }
        }
    }

//查询一条记录
    func queryRecordWithID(){
        let id = CKRecord.ID.init(recordName: "1")
        database.fetch(withRecordID: id) { (record, error) in
            if error != nil{
                print("查询失败")
                return
            }
            print("--------name:(String(describing: record?.object(forKey: "name"))) age:(String(describing: record?.object(forKey: "age"))) isMan:(String(describing: record?.object(forKey: "isMan")))")
        }
    }

//修改一条记录
    func updateRecord(){
        let id = CKRecord.ID.init(recordName: "1")
        database.fetch(withRecordID: id) {[weak self] (record, error) in
            if error != nil{
                print("查询失败")
                return
            }
            record!.setObject("xiaoming" as __CKRecordObjCValue, forKey: "name")
            self!.database.save(record!, completionHandler: { (record, error) in
                if error != nil{
                    print("保存失败")
                    return
                }else{
                    print("保存成功")
                }
            })
        }
    }

//使用谓词查询数据
    func queryRecordWithPredicate(){
        var predicate = NSPredicate.init(format: "name = %@", "xiaoming1")
        var query = CKQuery.init(recordType: "person", predicate: predicate)
        database.perform(query, inZoneWith: nil) { (records, error) in
            if error != nil{
                print("查询失败")
                return
            }
            var tempRecords = records as! [CKRecord]
            if(tempRecords.count < 1){
                 print("没有查询到")
                return;
            }
            let record = tempRecords[0]
            print("--------name:(String(describing: record.object(forKey: "name"))) age:(String(describing: record.object(forKey: "age"))) isMan:(String(describing: record.object(forKey: "isMan")))")
        }
    }

//获取用户信息
    func queryUserRecordId(){
        let container = CKContainer.default()
        //获取用户信息，必须要使用权限
        container.status(forApplicationPermission: .userDiscoverability) { (status, error) in
            if error != nil{
                return;
            }
            switch status{
            case .initialState:
                print("需要授权")
                self.requestPermissionToAccessUserInfomation()
            case .couldNotComplete:
                print("获取权限出错")
            case .denied:
                print("拒绝访问")
            case .granted:
                print("已授予访问权限")
                self.findUserInfo()
               
            }
        }
        
    }
    func requestPermissionToAccessUserInfomation(){
        let container = CKContainer.default()
        container.requestApplicationPermission(.userDiscoverability) { (status, error) in
            if error != nil{
               return;
            }
            //授权
            switch status{
            case .initialState:
                print("需要授权")
            case .couldNotComplete:
                print("获取权限出错")
            case .denied:
                print("拒绝访问")
            case .granted:
                print("已授予访问权限")
                self.findUserInfo()
                
            }
        }
        
       
    }
    func findUserInfo(){
        let container = CKContainer.default()
        container.fetchUserRecordID { (recordId, error) in
            if error != nil{
                print("查询ID失败")
                return
            }
            print("recordName:(String(describing: recordId!.recordName))  (recordId)" )

            container.discoverUserIdentity(withUserRecordID: recordId!, completionHandler: { (userInfo, error) in
                if error != nil{
                    print("查询失败")
                    return
                }
                print("firstName：(userInfo!.nameComponents?.familyName)")
            })
        }
    }