Class

HKCategoryType

Category types identify samples that contain a value from a small set of possible values.

Declaration

class HKCategoryType : HKSampleType

Overview

The HKCategoryType class is a concrete subclass of the HKObjectType class. To create a category type instance, use the object type’s categoryType(forIdentifier:) convenience method.

Use category types to:

  • Request permission to read or write matching quantity samples.

  • Create and share matching quantity samples.

  • Query for matching quantity samples.

Relationships

Inherits From

Conforms To

See Also

Type Objects

class HKCharacteristicType

Characteristic types represent data that does not typically change over time.

class HKQuantityType

Quantity types identify samples that store numerical values.

class HKCorrelationType

Correlation types identify samples that group multiple subsamples.

class HKActivitySummaryType

Activity summary types identify activity summary objects.

class HKSeriesType

An identifier that indicates the type for data stored in a series sample.

class HKObjectType

The abstract superclass for all classes that identify a specific type of data when working with the HealthKit store.

class HKSampleType

An abstract superclass for all classes that identify a specific type of sample when working with the HealthKit store.

class HKClinicalType

Clinical types identify samples that contain clinical record data.