CloudKit, Apple’s remote data storage service, provides a possibility to store app data using users’ iCloud accounts as a back-end storage service.

Related tags

Database swift demo cloudkit yalantis icloud storage-service remote-data
Overview

CloudKit

CloudKit, Apple’s remote data storage service, provides a possibility to store app data using users’ iCloud accounts as a back-end storage service.

Here is the same demo on Objective-C.

Requirements

  • iOS 8.0+
  • XCode 10.2
  • Swift 5

How To Get Started

  • Set up Cloud/CloudKit at iOS Developer Portal.
  • Insert a bundle identifier and choose a corresponding Team.
  • Select Capabilities tab in the target editor, and then switch ON the iCloud.

For more detailed information take a look at our article.

Usage

Retrieve existing records

let predicate = NSPredicate(value: true)
let query = CKQuery(recordType: recordType, predicate: predicate)
CKContainer.default().publicCloudDatabase.perform(query, inZoneWith: nil) { records, error in

}

Create a new record

let record = CKRecord(recordType: "RecordType")
record.setValue("Some data", forKey: "key")
CKContainer.default().publicCloudDatabase.save(record) { savedRecord, error in

}

Update the record

let recordId = CKRecord.ID(recordName: "RecordType")
CKContainer.default().publicCloudDatabase.fetch(withRecordID: recordId) { updatedRecord, error in  
    if error != nil {
        return
    }

    updatedRecord.setObject("Some data", forKey: "key")
    CKContainer.default().publicCloudDatabase.save(updatedRecord) { savedRecord, error in

    }
}

Remove the record

let recordId = CKRecord.ID(recordName: recordId)
CKContainer.default().publicCloudDatabase.delete(withRecordID: recordId) { deletedRecordId, error in

}

Contacts

Yalantis

Follow Yalantis on Twitter (@Yalantis) and [Facebook] (https://www.facebook.com/Yalantis?ref=ts&fref=ts)

License

The MIT License (MIT)

Copyright © 2017 Yalantis

Permission is hereby granted free of charge to any person obtaining a copy of this software and associated documentation files (the "Software") to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
Comments
  • Thanks for the project

    Thanks for the project

    Just wanted to say thanks- this helped me to start learning Cloudkit really quickly. I used the project to build a companion Mac App also leveraging Cloudkit which lets you subscribe to Cloudkit updates and synchronise your city database.

    I have open sourced it here: https://github.com/grantkemp/CloudKit-Demo-OSX

    opened by grantkemp 2
  • DidReceiveRemoteNotificationsStops working after 40 calls?

    DidReceiveRemoteNotificationsStops working after 40 calls?

    Hi - I am not sure if you have tried out my project, but I have discovered a strange issue when pairing up with your app.

    For some reason after the number of entries goes over 40 and If there is an active CKSubscription, then it appears that the remoteNotification is received as the badge number is incremented, however the the Application Delegate method didReceiveRemoteNotifications stops being called

    Any idea how to make it continue to work after 40 entries?

    opened by grantkemp 1
  • Got the Error while fetching data

    Got the Error while fetching data

    I got the error when fetching data from the cloud Couldn't get container configuration from the server for container

    static var privateCloudDatabase: CKDatabase {
     return CKContainer.default().privateCloudDatabase
}

static func fetchAllStickers(_ userId: String, completion: @escaping (_ success: Bool, _ error: Error?) -> Void) {
     let predicate = NSPredicate(format: "userId = %@", userId)
     let query = CKQuery(recordType: recordType, predicate: predicate)
    
     privateCloudDatabase.perform(query, inZoneWith: nil) { (records, error) in
            for record in records ?? [] {
                print(record)
            }
        }
        if let e = error {
            print("Error: \(e.localizedDescription)")

            DispatchQueue.main.async {
                completion(false, nil)
            }
        } else {
            DispatchQueue.main.async {
                completion(true, nil)
            }
        }
     }
 }

    Your Environment

    • Swift version: 5.1
    • iOS version: 13.1
    • Device: iPhone 7
    • Xcode version: 11.2.1
    opened by StackHelp 0
  • Enhancement: show flow if the user is not signed into iCloud

    Enhancement: show flow if the user is not signed into iCloud

    Currently if the user is not signed into icloud we should be showing the flow of pointing out to users how to recover and resolve this error. Apple doesn't have a default way to solve this in IOS as far as I can see (unlike on web)

    priority: low status: queued type: enhancement 
    opened by grantkemp 0

  • "our article" link is broken in README.md

    Report

    The README.md file has has a broken link to "our article": https://yalantis.com/blog/work-cloudkit/?utm_source=github

    The link is broken in both Swift and Objective-C versions of GitHub.

    opened by 101airborne 0
Owner
Yalantis
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Yalantis
GitHub https://yalantis.com
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