documentType(forIdentifier:)
Returns the shared document type for the provided identifier.
Declaration
class func documentType(forIdentifier identifier: HKDocumentTypeIdentifier) -> HKDocumentType?Parameters
- identifier:
A document type identifier. For a list of valid identifiers, see Hkdocumenttypeidentifier.
Return Value
The shared HKDocumentType instance based on the provided identifier.
Discussion
This method returns an instance of the HKQuantityType concrete subclass. HealthKit uses document types to manage medical documents. Use document type instances to create document samples that you can save in the HealthKit store. For more information, see HKDocumentSample.