A sample type used to create queries for documents.
SDKs
- iOS 10.0+
- Mac Catalyst 13.0+
- watchOS 3.0+
Framework
- Health
Kit
Declaration
class HKDocumentType : HKSampleOverview
To create a document type instance, use the HKObject class’s document convenience method.
Subclassing Notes
Like many HealthKit classes, document types are not extensible and should not be subclassed.
Additionally, this class reuses the same instance whenever possible. Letting multiple queries share the same document type helps reduce the overall memory usage.