Contents

HKQueryDescriptor

A descriptor that specifies a set of samples based on the data type and a predicate.

Declaration

class HKQueryDescriptor

Overview

Use descriptors to create queries that return multiple data types. You can use descriptors when creating HKSampleQuery, HKAnchoredObjectQuery, or HKObserverQuery instances.

Topics

Creating Query Descriptors

Accessing Descriptor Data

Initializers

See Also

Basic queries