Build for tvOS
Overview
This page details considerations when using Realm on tvOS.
Tip
Avoid Storing Important User Data
Avoid storing important user data in a realm on tvOS. Instead, it's best to treat Realm as a rebuildable cache.
Note
The reason for this has to do with where Realm writes its
Realm files. On other Apple platforms,
Realm writes its Realm files to the "Documents"
directory. Because tvOS restricts writes to that directory, the
default Realm file location on tvOS is instead NSCachesDirectory.
tvOS can purge files in that directory at any time, so reliable
long-term persistence is not possible. For cloud-backed persistence
on tvOS, consider using Device Sync.
You can also use Realm as an initial data source by bundling prebuilt Realm files in your app. Note that the App Store guidelines limit your app size to 4GB.
Tip
Browse our tvOS examples for sample tvOS apps that demonstrate how to use Realm as an offline cache.
Share Realm Files with TV Services Extensions
To share a Realm file between a tvOS app and a
TV services extension such as Top Shelf, use the
Library/Caches/ directory in the shared container for the
application group:
let fileUrl = FileManager.default .containerURL(forSecurityApplicationGroupIdentifier: "group.com.mongodb.realm.examples.extension")! .appendingPathComponent("Library/Caches/default.realm")