core-spotlight-ref

Index content using Core Spotlight's CSSearchableItem and CSSearchableIndex APIs with stable uniqueIdentifier and domainIdentifier, CSSearchableItemAttributeSet metadata, and optional location and rating attributes. Batch indexing enables efficient updates and deletions while maintaining searchability across your app's documents, notes, orders, and messages.

Use NSUserActivity to enable handoff between devices and Siri predictions for user-initiated actions and navigation states. Use Core Spotlight indexing for static or frequently updated content that should appear in system search results. NSUserActivity captures intent and context; Spotlight indexes persistent, discoverable content.

Integrate NSUserActivity into your app's view controllers and navigation flows, setting appropriate activity types and userInfo dictionaries. NSUserActivity enables seamless handoff between devices and feeds Siri suggestions. Combine with Core Spotlight indexing to make content both searchable and predictable.

Use CSSearchableIndex with batch operations: call indexSearchableItems(_:completionHandler:) to add or update multiple CSSearchableItem objects at once, and deleteSearchableItems(withDomainIdentifiers:completionHandler:) to remove by domainIdentifier. Stable identifiers and domain organization simplify efficient updates and deletions at scale.

Verify that CSSearchableItem has a valid, stable uniqueIdentifier and domainIdentifier, CSSearchableItemAttributeSet includes searchable metadata (title, contentDescription, keywords), and indexing completed without errors. Debug using CSSearchableIndex.default() queries and check that content type and visibility settings allow indexing.

Yes. Use distinct domainIdentifier values for each content type (documents, notes, orders, messages) to organize indexing, enable targeted deletion, and maintain separate Spotlight search namespaces. CSSearchableItemAttributeSet metadata adapts to each content type's attributes and searchable fields.