Class

HKSampleType

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

Declaration

@interface HKSampleType : HKObjectType

Overview

The HKSampleType class is an abstract subclass of the HKObjectType class, used to represent data samples. Never instantiate an HKSampleType object directly. Instead, work with one of its concrete subclasses: HKCategoryType, HKCorrelationType, HKQuantityType, or HKWorkoutType classes.

Topics

Checking the Duration Restriction

isMinimumDurationRestricted

A Boolean value that indicates whether samples of this type have a minimum time interval between the start and end dates.

minimumAllowedDuration

The minimum duration if the sample type has a restricted duration.

isMaximumDurationRestricted

A Boolean value that indicates whether samples of this type have a maximum time interval between the start and end dates.

maximumAllowedDuration

The maximum duration if the sample type has a restricted duration.

Relationships

Inherits From

See Also

Type Objects

HKCharacteristicType

A type that represents data that does not typically change over time.

HKQuantityType

A type that identifies samples that store numerical values.

HKCategoryType

A type that identifies samples that contain a value from a small set of possible values.

HKCorrelationType

A type that identifies samples that group multiple subsamples.

HKActivitySummaryType

A type that identifies activity summary objects.

HKAudiogramSampleType

A type that identifies samples that contain audiogram data.

HKSeriesType

A type that indicates the data stored in a series sample.

HKObjectType

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

HKClinicalType

A type that identifies samples that contain clinical record data.

HKWorkoutType

A type that identifies samples that store information about a workout.