That can enable some interesting cross-application workflows. Every app automatically gets a default CKContainer, and a group of apps can share a custom CKContainer if permission settings allow. Basic CloudKit SetupĬloudKit organizes data via a hierarchy of classes: CKContainer, CKDatabase, CKRecordZone, and CKRecord.Īt the top level is CKContainer, which encapsulates a set of related CloudKit data. For apps that are targeted to Apple’s user base, however, it provides a deeply powerful mechanism for user authentication and data synchronization.
#APPLE CLIENT FOR MAC TO SYN ICLOUD ANDROID#
Since CloudKit is deeply tied to Apple’s operating systems and devices, it’s not suitable for applications that require a broader range of device support, such as Android or Windows clients. 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.) Over time, however, Apple has addressed these issues. Before CloudKit, inconsistent behavior and weak debugging tools made it almost impossible to deliver a top quality product using the first generation iCloud APIs. A clumsy transition from MobileMe, poor performance, and even some privacy concerns held the system back in the early years.įor app developers, the situation was even worse. It’s fair to say iCloud got off to a bit of a rocky start. Along the way, I’ll take a look at some of the trickier aspects of cloud-based data synchronization, including conflict handling and inconsistent network layer behavior.ĬloudKit is built on top of Apple’s iCloud service.
Our example use case is a simple note application with just a single note, for illustration purposes. I’ll focus on an iOS application, but the same approach can be used for macOS clients as well. I’m going to take a fairly deep technical dive into the CloudKit API to explore ways you can leverage this technology to make awesome multi-device apps. It’s intended for experienced iOS developers who are already familiar with Apple’s frameworks and with Swift.
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In this article, I’ll demonstrate how to use CloudKit to keep a user’s data in sync between multiple clients. This is a thorny problem with many gotchas and pitfalls, but users expect the feature, and expect it to work well.įor iOS and macOS, Apple provides a robust toolkit, called CloudKit API, which allows developers targeting Apple platforms to solve this synchronization problem. These days, modern mobile application development requires a well thought-out plan for keeping user data in sync across various devices.
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