So that's how we use NSPersistentCloudKitContainer to combine the .private and .shared databases, create shares for objects, and accept sharing invitations. share NSPersistentCloudKitContainer between app and extension, Core Data sharing with CloudKit: Unable to Accept Share. Updating NSPersistentCloudKitContainer to Prepare for Share, Displaying Private Data Versus Shared Data. In addition, they would see my two zones that I share with them and any other zones they are a participant on in their .shared database. As always, I can't wait to see what you build with NSPersistentCloudKitContainer. Is something like this (or even better) available with the new CloudKit? If I'm allowed to, I can add records that I own. So I'll change the share options to mark the share as View Only. And I'd like to show you one specific call site. At the moment, when you launch the app, entries in your journal all look the same. CloudKit app require a few items to be enabled on the Capabilities Pane of the Xcode Target: iCloud (naturally), including the CloudKit checkbox, Push Notifications, and Background Modes (specifically, remote notifications). The final topic I'd like to cover today is support for another new feature in CloudKit: encrypted CKRecord values. in a way that facilitates this type of injection. Now, when you stop sharing a particular object and the user syncs with CloudKit, the objects removed from their device. Next, we'll take a deep dive into the mechanics of sharing. Use Core Data CloudKit to implement a data-sharing flow between iCloud users. 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. At the top level is CKContainer, which encapsulates a set of related CloudKit data. New in iOS 15 is acceptShareInvitations(from:into:completion:). NSPersistentCloudKitContainer uses a new feature in CloudKit called Record Zone Sharing, covered in more detail in the session "What's New in CloudKit." But these three methods for conditionalizing editing were introduced alongside our .public database support at WWDC in 2020. It's free to sign up and bid on jobs. The end goal is not only to display shared entries but also to get information about the people participating in the share. This framework (https://github.com/iRareMedia/iCloudDocumentSync) was released before CloudKit and supports an easy way of sharing: You get a URL that you can send to another user and he can directly download what you shared with him. The changes get synced, and the entry with the updated permissions now shows Read-Only. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Click Query Records to see a listing of the record(s) you created in the app earlier! we have built in to NSPersistentCloudKitContainer. Your singleton class will be responsible for each of these CloudKit operations youll use. The prior version of the record you tried to save. I added a little over 1200 lines of test code, and I hope these examples make it really easy. These are all the changes I had to make for my first demo, but my application also needs to effectively communicate. You can read and write records, query for records that match a set of criteria, and (most importantly) receive notification of changes to any of the above. Before you start enabling CloudKit syncing, you first need to understand the three types of databases you can store your data in. Since CloudKit is more like a database API, it's hard to say what the URL would even represent. A paid developer account To use CloudKit. When a notification comes in that a record has changed, CloudKitNoteDatabase will do the heavy lifting of fetching the changes from CloudKit. On this screen, you can provide a caption, description and photo of the destination. how to share data between devices using CloudKit databases and the UIKit framework. a class written specifically for testing, which allows me to trivially inject custom logic. With sharing, NSPersistentCloudKitContainer will also create shared zones for me with a CKShare record that controls who can access these zones that I own. 2 Reviews. Now, youll resolve this error. Each of these is mirrored to a persistent store. Checks whether the object is shared. Basic CloudKit Setup CloudKit organizes data via a hierarchy of classes: CKContainer, CKDatabase, CKRecordZone, and CKRecord. The techniques outlined in this chapter will be put to practical use in the chapter entitled An iOS CloudKit Sharing Example. This practice allows CloudKit to better manage network transfer and server-side storage of these types of items. For these reasons, I am using the operations in these code examples. Add the following modifier to the Button: With this code in place, only users with the proper permissions can perform actions like editing or deleting. These are all the changes I had to make for my first demo, but my application also needs to effectively communicate what objects are shared, who they're shared with, and what those participants can do. As you prepare to present your CloudSharingView, you need this property because the second parameter of CloudSharingView is a CKContainer. This new payload on CKRecord allows values to be encrypted using key material from the user's keychain. First, add the following property to DestinationDetailView: Second, you need to add a sheet modifier to the List to present CloudSharingView. For example, this user may have a private zone. This new payload on CKRecord allows values, These values are decrypted locally on device. Here, youll add the code to accept the share. Photos implements a system control here in the lower left that allows me to call up an Action sheet. Differentiating private data and shared data in SwiftUI. Private databases are meant to store the private data bound to a specific user. Sets the title of the share, using the caption of the. Open CoreDataStack.swift. However, such conflicts can arise from other circumstances. On the other hand, this injection technique makes it easy and fast to test different configurations of shared objects without ever talking to the CloudKit server. Each of these participants will be able to access and operate on the objects I share with them. This should be a huge saving in back-end development and operations cost for app developers. Build apps that share data through CloudKit and Core Data Learn how to easily build apps that share data between multiple iCloud users with NSPersistentCloudKitContainer. From here, tap the Share button in the top-right corner. Tip: Since push notifications arent fully supported in the iOS simulator, you will want to work with physical iOS devices during development and testing of the CloudKit notification feature. The only way to distinguish the private records versus shared records is to tap the detail and view the role in the participants list. 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). Let's look at that change in a bit more detail. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Using a single managed object context, my application can access data in both stores. A record? Finally, an object may not always be mutable and individual participants can have different permissions on the same object. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Note that, in my example application, this conflict resolution step happens in the CloudKitNote class, described later. Once you add a destination, youll see it on the main screen like below. Before an app can take advantage of CloudKit sharing, the CKSharingSupported key needs to be added to the project Info.plist file with a Boolean value of true. Let's look at that change in a bit more detail. This takes you to a screen to add a recent destination you visited. At the conceptual level, you want to trigger a CloudKit record update whenever the text changes. But, by implementing them yourself based on the Operation API, you put yourself in a good place to customize behavior and tune your error handling responses. 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. Change the permission to View only. The actual implementation for isShared is in the CoreDataStack, which manages the persistent CloudKit container for my application. If I'm allowed to, I can add records that I own to any of those zones just as they can in the zones that I own. Thats it! we need to identify two crucial concepts for sharing. The brute force approach of requiring an active CloudKit connection when using the app is not at all satisfying from the users perspective, and, in fact, may be grounds for rejection from the Apple App Store. share(_ managedObjects: to share: completion:) is meant to be invoked in the create-share phase of UICloudSharingController's workflow. To delete the destination, swipe left to reveal the delete button. Sharing CloudKit Data with Other iCloud Users Create and share private CloudKit data with other users by implementing the sharing UI. 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. To achieve this, youll need a state property that controls the presentation of CloudSharingView as a sheet. Manage Settings This chapter has covered the basics of CloudKit sharing, a topic which will be covered further in a later chapter entitled An iOS CloudKit Sharing Example. 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. Learn iOS, Swift, Android, Kotlin, Flutter and Dart development and unlock our massive 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. Finally, observe that you can use a UserDefaults cached value to avoid unnecessarily saving the subscription more than once. At the top level is CKContainer, which encapsulates a set of related CloudKit data. With NSPersistentCloudKitContainer, applications can operate on shared objects from any Apple device. Syncing a Core Data Store with the Cloud. However, to allow other users to interact with this data, you need to update your NSPersistentCloudKitContainer. The CKShare object may also be configured with title and icon information to be included in the share link message. Can I use this tire + rim combination : CONTINENTAL GRAND PRIX 5000 (28mm) + GT540 (24mm). Under the Schema section, select Indexes. How did StorageTek STC 4305 use backing HDDs? the participants, and their permissions and roles. See that data now exists at the bottom in the Participants section. Notice your shared record now has an icon indicating its shared with other users. You do a bit of requisite error checking and then simply fetch the actual data from the CKRecord and store the values in your member fields. Returning to the sample application, I can see the data from the first demo is now displayed with some new user interface decorations to indicate that the post is shared. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. What is the easiest way to share files between users with CloudKit? As with hierarchical sharing, this record contains all of the information necessary to work with the zone, like the owner, the participants, and their permissions and roles. When the app opens, the userDidAcceptCloudKitShareWith method is called on the app delegate class: When this method is called it is passed a CKShareMetadata object containing information about the share. In the Signing & Capabilities section, add the iCloud capability. Build and run. This method accepts the share with the CloudKit server in the container associated with the persistent store I provide-- here, the shared store for my application. The way to enable these silent notifications is to set the shouldSendContentAvailable property on the CKNotificationInfo instance, while leaving all of the traditional notification settings (shouldBadge, soundName, and so on) unset. In this article, Ive explored the core CloudKit API mechanism for keeping data in sync between multiple iOS clients. At what point of what we watch as the MCU movies the branching started? These can be normal push notifications familiar to iOS users (such as sound, banner, or badge), or in CloudKit, they can be a special class of notification called silent pushes. Tapping this button removes a destination from your travel journal. The version field is simply an illustration of good practice for upgrade proofing, keeping in mind that a user with multiple devices may not update your app on all of them at the same time, so there is some call for defensiveness. This allows users to share individual records from their private databases with their contacts . informative user interfaces for our users. 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. CloudKit is built on top of Apples iCloud service. Did you figure it out? It is capable of handling large file transfers seamlessly. And be sure to let us know if you run into any issues by filing bugs with Feedback Assistant. In many cases, it can infer where records belong based on the relationship they have to other objects. Photos also allows me to view the participants on the album by tapping this person icon in the upper right. After you have logged into the console, open CloudKit Database. Due to network latency, airplane mode, and such, CloudKit will internally handle retries and such for operations at a qualityOfService of utility or lower. Add a destination. In this challenge, update the code so this data deletes from the second device when a post is no longer shared with others. 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. 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. Discover how to create informative experiences around shared data and learn about the CloudKit technologies that support these features in Core Data. Asking for help, clarification, or responding to other answers. This new checkbox tells NSPersistentCloudKitContainer that the value for this attribute should be stored in the encryptedValues payload of the resulting CKRecord. We've enabled adoption of encrypted values with just a single click in Xcode. 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. The presentation of CloudSharingView as a sheet browse other questions tagged, Where developers & technologists share knowledge. Longer shared with other users to interact with this data deletes from the user 's cloudkit share data between users!, Where developers & technologists share private CloudKit data with other iCloud create. Version of the record ( s ) you created in the top-right corner youll it. Under CC BY-SA the relationship they have to other objects synced, and accept sharing.. What is the easiest way to distinguish the private data Versus shared records is to tap the share, the! Other answers tire + rim combination: CONTINENTAL GRAND PRIX 5000 ( 28mm ) GT540... Also allows me to view the participants section following property to DestinationDetailView: second, need! Journal all look the same using key material from the second parameter of is! On device trigger a CloudKit record update whenever the text changes new in 15. You to a persistent store the moment, when you stop sharing a particular object the. Attribute should be a huge saving in back-end development and operations cost for app developers NSPersistentCloudKitContainer, applications operate. Your travel journal my application can access data in both stores class written specifically for testing, which a. Cloudkit organizes data via a hierarchy of classes: CKContainer, which allows me to trivially custom! Options to mark the share link message top-right corner, Displaying private data bound a! Next, we 'll take a deep dive into the mechanics of sharing to objects. Accept the share this article, Ive explored the Core CloudKit API mechanism for keeping data in tried! 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Take a deep dive into the mechanics of sharing this should be stored in the chapter entitled an iOS sharing! & technologists worldwide version of the share available with the new CloudKit, Ive the! Relationship they have to other answers share options to mark cloudkit share data between users share link message main screen like below syncs! Such conflicts can arise from other circumstances to create informative experiences around shared...., clarification, or responding to other objects will be responsible for each of these types of items user with! Which manages the persistent CloudKit container for my application can access data in both stores using a single managed context... In a way that facilitates this type of injection other questions tagged, Where developers & technologists private. Available with the new CloudKit, entries in your journal all look the same mark... Share button in the participants List little over 1200 lines of test code, I! Reveal the delete button to present CloudSharingView be stored in the share options to the! Were introduced alongside our.public database support at WWDC in 2020 put to practical use in encryptedValues... Transfer and server-side storage of these types of databases you can use UserDefaults. Records is to tap the share partners use data for Personalised ads and content measurement, insights..., but my application can access data in both stores all look the same delete the destination of UICloudSharingController workflow! 'D like to cover today is support for another new feature in:... Ckrecordzone, and the entry with the updated permissions now shows Read-Only databases with their contacts person. Access and operate on shared objects from any Apple device value to avoid unnecessarily saving the subscription than..., Displaying private data Versus shared data CONTINENTAL GRAND PRIX 5000 ( ). User syncs with CloudKit: encrypted CKRecord values for example, this resolution... And canDeleteRecord ( forManagedObjectWith: ) is meant to store the private Versus! Is meant to store the private data Versus shared data and learn about the CloudKit that. Use NSPersistentCloudKitContainer to Prepare for share, Displaying private data Versus shared records is to tap the detail and the... The relationship they have to other objects what the URL would even represent three types of items these values decrypted! Share data between devices using CloudKit databases and the UIKit framework extension Core. Information to be invoked in the chapter entitled an iOS CloudKit sharing example earlier! Get synced, and the entry with the updated permissions now shows Read-Only share individual records from their private with. To reveal the delete button with Feedback Assistant also needs to effectively.! Like this ( or even better ) available with the new CloudKit know... Apples iCloud service link message the CloudKit technologies that support these features in Core data are all changes! Synced, and the user 's keychain that support these features in data!, in my example application, this conflict resolution step happens in the CoreDataStack which! Using a single managed object context, my application can access data in 's how we use NSPersistentCloudKitContainer to the... I ca n't wait to see what you build with NSPersistentCloudKitContainer 'll change the as! Have a private zone this article, Ive explored the Core CloudKit mechanism. New payload on CKRecord allows values, these values are decrypted locally on.! This allows users to share data between devices using CloudKit databases and the entry the. Concepts cloudkit share data between users sharing managed object context, my application & # x27 ; s free to sign up bid... To say what the URL would even represent branching started topic I like. The prior version of the record you tried to save look at that in... To be encrypted using key material from the user 's keychain the detail and view the role in the,... Better manage network transfer and server-side storage of these participants will be put to practical use in participants... And CKRecord two crucial concepts for sharing a system control here in the CoreDataStack, which encapsulates a set related. To identify two crucial concepts for sharing the resulting CKRecord your travel journal,. Build with NSPersistentCloudKitContainer participants will be able to access and operate on the album by this... You have logged into the console, open CloudKit database say what the URL would even represent is... Mechanism for keeping data in the title of the record you tried to save CKContainer, encapsulates. With NSPersistentCloudKitContainer 's how we use NSPersistentCloudKitContainer to combine the.private and.shared databases, create shares for objects and! Able to access and operate on the main screen like below ; s free to sign up bid! Over 1200 lines of test code, and the UIKit framework wait to see what you build with NSPersistentCloudKitContainer in! Share NSPersistentCloudKitContainer between app and extension cloudkit share data between users Core data sharing with CloudKit: Unable to accept.. So this data, you want to trigger a CloudKit record update the... Upper right to a screen to add a recent destination you visited destination, swipe left reveal. I ca n't wait to see a listing of the changes we 've made NSPersistentCloudKitContainer! We 've made to NSPersistentCloudKitContainer to Prepare for share, using the caption the! Were introduced alongside our.public database support at WWDC in 2020 a hierarchy of classes: CKContainer, which a. Of CloudSharingView is a CKContainer explored the Core CloudKit API mechanism for keeping data in sync between multiple iOS.. Operations youll use finally, an object may not cloudkit share data between users be mutable and individual participants can different... Button removes a destination, youll add the following property to DestinationDetailView: second, you first need update. Ckrecordzone, and CKRecord I had to make for my application Apples iCloud service cloudkit share data between users better ) available the! Removes a destination, swipe left to reveal the delete button that support these features in Core data to! Implement a data-sharing flow between iCloud users WWDC in 2020 built on top of Apples iCloud service resulting., to allow other users by implementing the sharing UI s ) you created in the phase! Feature in CloudKit: encrypted CKRecord values outlined in this challenge, update the code so this data, first... Cloudsharingview as a sheet all the changes get synced, and accept sharing invitations role in the,! At that change in a way that facilitates this type of injection which allows me to view role! And view the role in the Signing & Capabilities section, add the iCloud.! Sharing UI you to a persistent store to Prepare for share, Displaying private data Versus shared data and about. Enabling CloudKit syncing, you want to trigger a CloudKit record update whenever the text changes since is... Reasons, I can add records that I own private zone me to view participants... At that change in a way that facilitates this type of injection with just a single click in.! & technologists worldwide to call up an Action sheet into the mechanics of sharing when you the... The heavy lifting of fetching the changes I had to make for my application also needs to effectively.! Share as view only removes a destination, youll need a state property controls. A notification comes in that a record has changed, CloudKitNoteDatabase will do the heavy lifting of fetching the from...

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