A type that identifies activity summary objects.
- iOS 9.3+
- watchOS 2.2+
You only use activity summary types to request permission to read
HKActivity objects from the HealthKit store. To query for activity summary objects, use an
HKActivity. You can also create your own
HKActivity objects (for example, to display in an
HKActivity), but you cannot save them to the HealthKit store. However, any workouts that you save to the HealthKit store may affect that day’s summary. For more information, see Filling the Rings.
Using Activity Summary Types
Like many HealthKit classes, activity summary types are not extensible and should not be subclassed.