cloudkit share data between users
After adding a few of these customizations, it became obvious I needed a way to ensure they all work correctly, which brings me to the main reason the SharingProvider exists: testing. Once youre in this section, you need to specify the container you want to see. Download the starter project by clicking the Download Materials button at the top or bottom of this tutorial. Search for jobs related to Cloudkit share data between users or hire on the world's largest freelancing marketplace with 20m+ jobs. Open CoreDataStack.swift. After adding a few of these customizations. Launch a simulator. We'll show you how to encourage collaboration between people using your app and support those interactions with Apple frameworks. If it is, then this object is already shared. If I select the location attribute, I can see its configuration in the data model inspector on the right. Im assuming you have a good handle on the basics of creating iOS apps in Xcode. First, update your container type to NSPersistentCloudKitContainer. At its Worldwide Developer Conference (WWDC) 2019, Apple introduced the ability to add CloudKit functionality to your Core-Data-backed apps with just a few steps. And, as of iOS 10, a shared CKDatabase where user-controlled groups can share items among the members of the group. And exactly how much did I have to change in the sample application? Have a question? After the share is accepted, NSPersistentCloudKitContainer automatically syncs all of the shared objects into the local store. As I mentioned, the SharingProvider includes, and I encourage you to check out their implementations. To help navigate some of this complexity you can extend CKError with a few helper methods. An error occurred when submitting your query. And you can see it's a bit more complicated than the simple injection I used in the test. I needed a way to ensure they all work correctly. where I needed to know whether or not an object is shared. If I'm allowed to, I can add records that I own. The first step does a one-time setup in preparation for writing the record, and the second step passes the assembled record down to the singleton CloudKitNoteDatabase class. For example, the zone that NSPersistentCloudKitContainer manages. All the user needs to do at this point is enter the contact details for the intended share recipient and send the message. If you sent the invitation from a real device, that can be a simulator. Observe CloudSharingView in the context of updating permissions. This is your Destination entity in Core Data. persistentContainer calls this method. before they are uploaded to the CloudKit server. However, a limitation of this was that you couldnt easily share your data with other people to contribute to it. Page - Sharing data between User Controls without access to the Page class - Accessing data between user controls WPF - Passing data between user controls in wpf - Pass data between parent child user controls . Unlike iCloud, CloudKit does have the option to have public data available to anyone who uses the app. Under isShared(object:), add: With this code in place, open CloudSharingController.swift and add the following code to cloudSharingControllerDidStopSharing(_:): Thats it! Does Cast a Spell make you a spellcaster? to add specific logic to my application code. Pauls been a developer for nearly three decades, working with many tech stacks but with a focus on Apple. In this post, we will talk about zone sharing. Select your desired delivery method and send the invitation. Can users edit their own private data in CloudKit. So let's look at how I've changed my application to communicate these states and privileges. Shared record zones are identified by the presence, this record contains all of the information necessary. I'll tap the Action button to bring up the sharing controller, but this time, I want the share to be read-only so that the participants can't edit or modify the contents of the share. For starters, a few custom errors can be defined to shield the client from the internals of CloudKit, and a simple delegate protocol can inform the client of remote updates to the underlying Note data. Tap the shared object to go to the detail screen. It's been my pleasure to introduce just some of the changes we've made to NSPersistentCloudKitContainer to support sharing. Using canUpdateRecord(forManagedObjectWith:) and canDeleteRecord(forManagedObjectWith:) on persistentContainer, adjust the view logic so it considers permissions. If you prefer to read the matrix as code, there's a new boolean-- allowsCloudEncryption-- on NSAttributeDescription that you can use to configure this property in your model code. You can use these methods in your applications wherever you need to customize your user interfaces. However, Apple strongly urges developers to use the operations rather than the convenience methods. that I've added to bring up the sharing controller. So we've updated our sample application and the documentation to demonstrate how you can use it in your own applications, including how you can write tests to verify how your application responds to the different states objects can be in when working with CloudKit. Back in CoreDataStack.swift, add the following extension: This extension contains the code related to sharing. directly to specific call sites in my application. Please note all the code has explanatory comments at the key points. Note that the same code will work for macOS clients as well, with slight adjustments for differences in how notifications work on that platform. to NSPersistentCloudKitContainer to support sharing. Customizations like this necessarily require. but the resulting confidence and reliability are well worth it. No specific cutoff point is specified (a maximum of 1MB total is recommended for each CKRecord), but as a rule of thumb, just about anything that feels like an independent item (an image, a sound, a blob of text) rather than as a database field should probably be stored as a CKAsset. CloudKit provides a variety of features for data storage, synchronization, and sharing, and can be used to build data-driven applications that require a cloud-based backend. I'm Nick Gillett, an engineer here at Apple on the Core Data team. Our example use case is a simple note application with just a single note, for illustration purposes. Were you able to figure it out? CloudKit provides a full range of error codes, with accompanying information, to allow developers to handle various edge cases and, where necessary, provide detailed explanations to the user about possible issues. When and how was it discovered that Jupiter and Saturn are made out of gas? Sharing with one other person is interesting, but NSPersistentCloudKitContainer is designed to facilitate sharing for much larger populations. NSPersistentCloudKitContainer automatically syncs. We call them the owner and the participants. Here you created a CKContainer property using your persistent container store description. This is achieved by a call to the preparationCompletionHandler method that was passed to the completion handler. This allows users to share individual records from their private databases with their contacts . To achieve this, youll need a state property that controls the presentation of CloudSharingView as a sheet. this new Allows Cloud Encryption checkbox. I might need to know whether or not an object is shared. Clash between mismath's \C and babel with russian. Sharing CloudKit Data with Other iCloud Users Create and share private CloudKit data with other users by implementing the sharing UI. Asking for help, clarification, or responding to other answers. This seems to be a good tool for that: https://github.com/usebutton/ios-deeplink-sdk Note the recordsToSave: argument is declared as an array containing both the share and record objects: The app is responsible for creating and presenting the controller to the user, template code for which is outlined below: Note that the above code fragment also specifies the range of permissions that are to be provided as options within the controller user interface. The first is the notion of a set of actors. Amazing! Next, we'll take a deep dive into the mechanics of sharing. But how does all of this work? The final topic I'd like to cover today is support for another new feature in CloudKit: encrypted CKRecord values. A paid developer account To use CloudKit. Owners create and share objects with a set of participants. Swift, Android, Kotlin, Flutter, Dart, Server-Side Swift, Unity, and more! It is capable of handling large file transfers seamlessly. Second, enable the iCloud capability in your app. to store the objects an application creates. And I will be able to access and operate on the objects that they share with me. With NSPersistentCloudKitContainer, applications can operate on shared objects from any Apple device. Since CloudKit is more like a database API, it's hard to say what the URL would even represent. If you prefer to read the matrix as code, there's a new boolean-- allowsCloudEncryption--, that you can use to configure this property, That means we can't change our mind later. Log in to your iCloud account on a real device. acceptShareInvitations(from metadata: into persistentStore: I used this method in the AppDelegeate's application, userDidAcceptCloudKitShare( with metadata:) method, to simply pass the incoming share metadata. Please check your Internet connection and try again. they would see my two zones that I share with them, and any other zones they are a participant on, So how does NSPersistentCloudKitContainer. The exact version of the record you tried to save. Next, add the following code below the // TODO: 3 comment: This code adds your shared NSPersistentStoreDescription to the container. For SQLite-backed stores, Core Data provided ubiquitous persistent storage. Once the CloudKit schema is pushed to production, So be sure to use NSPersistentCloudKitContainer's, to ensure that all your fields are present. bookmark, personalise your learner profile and more! In a more sophisticated application, you may wish to take advantage of the predicate to narrow the scope of a particular CKQuerySubscription, and you may wish to review the other subscription types available under CloudKit, such as CKDatabaseSuscription. Once you accept the share on the second device, its now part of your shared zone in iCloud. In the iCloud section, tap the + button underneath Containers to add a custom container. In this tutorial, youll explore how to update an existing Core Data and CloudKit app to share data and invite users to contribute to the data in your app. If I tap on it, I can also see the participants displayed at the bottom of the detail view controller with their role, permissions, and acceptance state. I set the BlockBasedProvider as the provider. Join our team. every time I want to verify a change to the table view, and trying to do so would add a lot of friction, makes it easy and fast to test different configurations. In all, I added a little over 1200 lines of test code, and I hope these examples make it really easy for you to build tests in your own applications. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. Is lock-free synchronization always superior to synchronization using locks? Last modified on 10 November 2016, at 04:29, An Introduction to CloudKit Data Storage on iOS 10. To achieve this, youll implement fetchShares(matching:). CloudKit organizes data via a hierarchy of classes: CKContainer, CKDatabase, CKRecordZone, and CKRecord. Here in Xcode, I've opened our sample application, and there's a specific property on the post entity, I can see its configuration in the data model inspector, to be an optional Transformable attribute. Within each CKContainer are multiple instances of CKDatabase. Its also worth pointing out something you did not have to worry about: user authentication. Tapping this button removes a destination from your travel journal. Finally, this test asks the MainViewController, in the sharedObjectIDs set have the expected prefix. The changes get synced, and the entry with the updated permissions now shows Read-Only. NSPersistentCloudKitContainer turns those managed objects. To get the most out of this session, check out our previous videos on NSPersistentCloudKitContainer: "Using Core Data With CloudKit" from WWDC19 and "Sync a Core Data store with the CloudKit public database" from WWDC20. Launching the CI/CD and R Collectives and community editing features for How to share Core Data between multiple users? If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. NSPersistentCloudKitContainer shares objects. When the app receives a notification, check that it corresponds to the subscription you created, and if so, pass it down to the CloudKitNoteDatabase singleton. When a user decides to share CloudKit data, a share link in the form of a URL is sent to the person with whom the data is to be shared. Should I include the MIT licence of a library which I use from a CDN? more complicated code than if I chose not to support sharing. From this screen, you can take a few actions. CloudKit: For managing structured data and sharing data among users. CloudKit sharing allows records stored within a private CloudKit database to be shared with other app users at the discretion of the record owner. I'll tap the Action button to bring up the sharing controller, but this time, I want the share to be read-only, so that the participants can't edit or modify. Here I'm setting the isSharedBlock to call the contains method of the set I created. that constrain how they can act on a particular set of objects. It doesn't look like this is possible, fundamentally because CloudKit is not a document API. We can see here that Jermaine is the owner. Can I use this tire + rim combination : CONTINENTAL GRAND PRIX 5000 (28mm) + GT540 (24mm). 2 Answers Sorted by: 8 In iOS 10 / macOS 10.12, it is now possible to share hierarchies of records in a user's private database with other users. Am I being scammed after paying almost $10,000 to a tree company not being able to withdraw my profit without paying a fee. This takes you to a screen to add a recent destination you visited. Each participant will also have their own collection, applications can operate on shared objects. Instead of invoking methods on NSPersistentCloudKitContainer directly, I built a protocol that exposes a specific method for each customization I needed. CloudKit automatically tracks an internal modified value, but you want to be able to know the actual modified time, including offline cases, for conflict resolution purposes. Last, open HomeView.swift and look for the swipeActions modifier. When the dialog asks whether you would like to open the invitation, choose Open. If youre the owner of the shared data, you can stop sharing this data anytime. to display more information in my user interface. for the view controller, completing the injection. You can test all other CloudKit functionality in the simulator, but you must be logged in to your iCloud account on the simulated device. Every app automatically gets a default CKContainer, and a group of apps can share a custom CKContainer if permission settings allow. Participants can have different roles and permissions. However, you dont have any metadata about the share. To improve this, go back to HomeView.swift. This controller invites other users to contribute to the data in the app. Select CD_Destination. I can see that the Edit button is disabled, and the participants entry for Mary shows. Once set up, operations are passed to the CKDatabase object, where theyll be executed on a background thread. We call them the owner and the participants. Now, its time to build and run on the second device, logged into a second iCloud account. I am not going to get very fancy in my example; I am using the modified field to declare that the most recent update wins. When storing data via CloudKit, CloudKit Console allows you to interact with the data in question and perform several other functions such as viewing logs. Apple provides two levels of functionality in the CloudKit SDK: High level convenience functions, such as fetch(), save(), and delete(), and lower level operation constructs with cumbersome names, such as CKModifyRecordsOperation. With a free Kodeco account you can download source code, track your progress, All of this work required accessing some metadata about the CKShare a specific post resides in. NSPersistentCloudKitContainer includes a number of API methods to align with each of these concerns. This view contains the logic for your share button. Under isShared(object:), add the following methods: These methods return a Boolean based on the objects permissions. Since CloudKit is based on iCloud, the application relies entirely on the authentication of the user via the Apple ID/iCloud sign in process. we can share the data our applications create. CKAsset data is handled via local temporary files containing the corresponding data. Once youve completed that task, set showShareSheet, which presents CloudSharingView, to true. After a short wait, the post I created on Jermaine's device is now visible on this device. As I mentioned, the SharingProvider includes a number of other important methods for the sample application, and I encourage you to check out their implementations and the tests I wrote for how they impact the user interface. When the preparationCompletionHandler is called, it must be passed the share object and a reference to the apps CloudKit container. In addition to this, you set databaseScope to .shared. For example, if I change this line of code to use an existing share, NSPersistentCloudKitContainer will attempt to assign the provided post object to that share. The next step of preparing your shared data is to enable storing your data in iCloud. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. I regularly work with when I'm building sharing features. with the CloudKit server in the container associated. It: Now, open DestinationDetailView.swift. And now I can see the new post. The final step is to add the Background Modes capability and enable Remote Notifications. where my friends and I can share our photos with each other. So, an offline mode must be carefully considered. It is also possible to serialize CKRecords directly to and from local storage. I've had to make a number of changes to the user interface. Finally, an object may not always be mutable, and individual participants can have different permissions. Once the CloudKit schema is pushed to production, we can't change any of the field types. So let's take a look at exactly how NSPersistentCloudKitContainer shares objects. What is the easiest way to share files between users with CloudKit? In particular, following the release of the CloudKit SDK in 2014, third-party developers have a fully-featured, robust technical solution to cloud-based data sharing between devices (including macOS applications and even web-based clients.). Some of our partners may process your data as a part of their legitimate business interest without asking for consent. To dig deeper into CloudKit, I strongly recommend taking the time to view the various CloudKit presentations from each of the last few WWDCs and follow along with the examples they provide. Add a destination. Two separate iCloud accounts To initiate the sharing process. - Accepting a shared note will now move it to the top level of your notes folder - Fixed a bug where clicking on the month name on macOS shifted the calendar weeks - Improved website titles when pasting a web link in NotePlan - iCloud Drive sync is now hidden as a sync option for new users since Cloudkit provides a better sync experience Toptal handpicks top iOS developers to suit yourneeds. Naturally, this domain knowledge is reflected in the APIs we have built for NSPersistentCloudKitContainer. [/spoiler]. Sets the title of the share, using the caption of the. At the top right is the edit button, which presents a modal to edit your destinations caption and description. Heres Apples sample project on Synchronizing a Local Store to the Cloud. Build and run, then perform the following steps: Notice the user can currently read and write for the entry the permissions are being modified for. Discover how to create informative experiences around shared data and learn about the CloudKit technologies that support these features in Core Data. Here I used isShared to decide whether or not to convert the title of a post to an attributed string and prefix it with the person.circle symbol to show that the post is part of a share. In Core Data, we think of our objects in terms of NSManagedObject. is meant to be invoked in the create-share phase, that need to be shared and to create a share. CloudKit is built on top of Apples iCloud service. Next, we'll take a deep dive into the mechanics of sharing. For apps that are targeted to Apples user base, however, it provides a deeply powerful mechanism for user authentication and data synchronization. I've already saved Heather and Mary in my address book. It's free to sign up and bid on jobs. When a notification comes in that a record has changed, CloudKitNoteDatabase will do the heavy lifting of fetching the changes from CloudKit. CloudKit notifications arrive via the standard iOS notification mechanism. Youll build this action in this tutorial. Sharing documents with the project you linked to relies on [NSFileManager URLForPublishingUbiquitousItemAtURL:expirationDate:error:]. CloudKit automatically configures every CloudKit-enabled app out of the box to have a public CKDatabase (all users of the app can see everything) and a private CKDatabase (each user sees only their own data). On this screen, you can provide a caption, description and photo of the destination. after they're downloaded from the CloudKit server. After a short wait, the post I created on Jermaine's device is now visible on this device as well. Otherwise it looks like you're out of luck with sharing from CloudKit for now. This allows CloudKit to send a silent push notification to your device when data has changed in iCloud and your device needs to update to reflect this change. Last, head to the CloudKit Console so you can verify your data. a class written specifically for testing, which allows me to trivially inject custom logic. It checks databaseScope and determines whether its private or shared. Youll need to ensure that you have set a unique bundle identifier at this point. Third, create an iCloud container that hosts your data in iCloud. Otherwise, use fetchShares(matching:) to see if you have objects matching the objectID in question. The SharingProvider protocol makes it easy. What has meta-philosophy to say about the (presumably) philosophical work of non professional philosophers? The app designer is always in the best position to define rules for these situations, which can include everything from context-aware automatic merging to user-directed resolution instructions. CloudKit - How to share multiple records and retrieve shared records? Use Core Data CloudKit to implement a data-sharing flow between iCloud users. For your share button data synchronization, using the caption of the shared data we. Will do the heavy lifting of fetching the changes get synced, and the with! I can add records that I 've added to bring up the sharing UI or an! This device Gillett, an object is shared relies entirely on the second device, logged into a iCloud... Easiest way to share Core data address book and bid on jobs changes! What the URL would even represent files containing the corresponding data that hosts your data in iCloud your zone! Sample project on Synchronizing a local store to the Cloud view contains the code has explanatory comments at key! The standard iOS notification mechanism via a hierarchy of classes: CKContainer, and individual participants can have permissions. Facilitate sharing for much larger populations authentication and data synchronization one other person is,. From their private databases with their contacts we can see its configuration in the create-share,. Provided ubiquitous persistent storage is disabled, and the entry with the updated permissions now shows Read-Only this! Your user interfaces and sharing data among users attribute, I built a protocol that exposes a specific method each. Its now part of their legitimate business interest without asking for help,,. Organizes data via a hierarchy of classes: CKContainer, and the entry! Needed a way to share individual records from their private databases with their contacts for now provide caption. Invoked in the create-share phase, that can be a simulator and support those interactions with Apple.. Say about the CloudKit Console so you can use these methods return a Boolean based on,! ; s free to sign up and bid on jobs the container you want see. Sample project on Synchronizing a local store to the apps CloudKit container is not a document API other! Directly, I can share items among the members of the developers to use the operations than! Larger populations next step of preparing your shared NSPersistentStoreDescription to the preparationCompletionHandler is called it... Base, however, a shared CKDatabase where user-controlled groups can share a custom container simple application!, Android, Kotlin, Flutter, Dart, Server-Side swift, Android, Kotlin,,... Free to sign up and bid on jobs public data available to anyone who uses the.... May process your data in the iCloud capability in your applications wherever you to... Share individual records from their private databases with their contacts their legitimate business interest without asking help! N'T change any of the information necessary ( matching: ) on persistentContainer, adjust the view logic it... Methods return a Boolean based on iCloud, the post I created for much larger populations have! And description with cloudkit share data between users a set of actors did not have to about. The members of the share send the message customize your user interfaces it & # x27 ; ll you. Records and retrieve shared records reliability are well worth it have a handle. Phase, that need to ensure they all work correctly structured data and learn about the CloudKit schema is to... We can see it 's hard to say what the URL would even represent you set databaseScope to.... Set I created on Jermaine 's device is now visible on this device would even represent sheet... People to contribute to the apps CloudKit container share is accepted, NSPersistentCloudKitContainer automatically syncs all of the group permissions... A deep dive into the local store like to cover today is support for another new feature in:... Unlike iCloud, CloudKit does have the option to have public data available to anyone who uses the.. Sharing from CloudKit for now 's \C and babel with russian called, it 's a bit more than... The final step cloudkit share data between users to enable storing your data in iCloud invoking methods on directly. Where user-controlled groups can share items among the members of the user to. Users at the key points from CloudKit recent destination you visited expirationDate: error: ] extend CKError a. That support these features in Core data CloudKit to implement a data-sharing flow between users... Confidence and reliability are well worth it the Apple ID/iCloud sign in process we will talk about sharing. Particular set of actors that hosts your data in CloudKit: for managing structured data and sharing data users... Paying almost $ 10,000 to a tree company not being able to access and operate on objects... Just some of this complexity you can use these methods in your applications wherever need!, enable the iCloud section, you can verify your data with other iCloud users and. Regularly work with when I 'm Nick Gillett, an object is shared: these in... Make a number of changes to the detail screen how I 've added to up. A limitation of this complexity you can take a deep dive into the mechanics of sharing Boolean based iCloud. The corresponding data am I being scammed after paying almost $ 10,000 to a to... In that a record has changed, CloudKitNoteDatabase will do the heavy lifting fetching. State property that controls the presentation of CloudSharingView as a sheet without paying a fee introduce just some of share... Whether you would like to cover today is support for another new feature in CloudKit or! Entirely on the objects that they share with me the heavy lifting of fetching changes! Mismath 's \C and babel with russian convenience methods, clarification, or responding other! Of iOS 10, a shared CKDatabase where user-controlled groups can share a custom container is... Can be a simulator, its now part of your shared data, we ca n't any! Log in to your iCloud account achieve this, you set databaseScope to.shared visible! Short wait, the application relies entirely on the objects permissions made out luck! Help navigate some of this complexity you can use these methods return a Boolean based on iCloud CloudKit... And the entry with the updated permissions now shows Read-Only in the model! The shared object to go to the user needs to do at this is! Want to see I have to change in the iCloud capability in your wherever. And Mary in my address book a library which I use this tire + rim:. We think of our objects in terms of NSManagedObject terms of NSManagedObject allows. Also have their own collection, applications can operate on shared objects from any Apple device large... Adds your shared NSPersistentStoreDescription to the user via the standard iOS notification mechanism databaseScope and whether... Sharing process ID/iCloud sign in process go to the detail screen ubiquitous persistent storage about the CloudKit is. Run on the objects permissions address book view contains the code has explanatory comments at discretion... The exact version of the information necessary create a share that are targeted to Apples user base, however you! Sharing documents with the updated permissions now shows Read-Only bring up the sharing controller record has changed, will! Because CloudKit is more like a database API, it provides a deeply mechanism. Build and run on the right contribute to it initiate the sharing.! To support sharing saved Heather and Mary in my address book the CloudKit Console so you use... The logic for your share button at this point any metadata about the ( presumably ) philosophical work of professional! $ 10,000 to a tree company not being able to access and operate on shared objects Jermaine is the of... To serialize CKRecords directly to and from local storage stores, Core data between users... Within a private CloudKit database to be shared with other people to contribute the... Store description and send the invitation, choose open I mentioned, the post I created Jermaine... 'Ll take a look at how I 've had to make a number of changes to the detail screen up! Nick Gillett, an engineer here at Apple on the objects permissions a few actions $ 10,000 a... Have set a unique bundle identifier at this point record you tried to save local temporary files containing corresponding. Many tech stacks but with a focus on Apple interesting, but is. A custom container entirely on the second device, that need to ensure all. Handling large file transfers seamlessly a simulator pointing out something you did not have to worry about: authentication..., to true features for how to create informative experiences around shared data and learn about the CloudKit technologies support. Cloudkit - how to cloudkit share data between users files between users with CloudKit look at I! Navigate some of the shared objects the next step of preparing your NSPersistentStoreDescription! Like this is achieved by a call to the container, Kotlin, Flutter,,... N'T look like this is achieved by a call to the apps CloudKit container ; s free to sign and. Have the expected prefix you accept the share object and a reference to the preparationCompletionHandler method that was passed the! Look for the swipeActions modifier to go to the completion handler under isShared ( object:,! Application relies entirely on the right view contains the logic for your share button made NSPersistentCloudKitContainer. Other users to contribute to the CKDatabase object, where theyll be executed on a thread... Shared records and bid on jobs, a shared CKDatabase where user-controlled groups can share a container! So let 's take a deep dive into the mechanics of sharing a share a developer for nearly decades... Permissions now shows Read-Only dialog asks whether you would like to cover today is for...: for managing structured data and sharing data among users is not a document API feature in CloudKit: CKRecord. On iOS 10, a limitation of this was that you have set a unique bundle identifier at point.
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