Type Method

predicateForObjectsFromSources:

Returns a predicate that matches all the objects that were created by any of the provided sources.

Declaration

+ (NSPredicate *)predicateForObjectsFromSources:(NSSet<HKSource *> *)sources;

Parameters

sources

A set of sources that have saved data to the HealthKit store.

Return Value

A predicate that matches all the objects created by any of the provided sources.

Discussion

Use this convenience method to create a predicate that finds all the objects from a specified set of apps or devices. The following sample uses both the convenience method and a predicate format string to create equivalent predicates.

NSPredicate *fromSources = [HKQuery predicateForObjectsFromSources:sources];
 
NSPredicate *explicitFromSources = [NSPredicate predicateWithFormat:@"%K IN %@",
                                   HKPredicateKeyPathSource,
                                   sources];

See Also

Creating Object Predicates

+ predicateForObjectWithUUID:

Returns a predicate that matches an object with the specified universally unique identifier (UUID).

+ predicateForObjectsWithUUIDs:

Returns a predicate that matches the objects with the specified universally unique identifiers (UUIDs).

+ predicateForObjectsFromSource:

Returns a predicate that matches all the objects that were created by the provided source.

+ predicateForObjectsFromDevices:

Returns a predicate that matches all the objects that were created by any of the provided devices.

+ predicateForObjectsWithDeviceProperty:allowedValues:

Returns a predicate that matches all objects created by devices with the specified properties.

+ predicateForObjectsFromSourceRevisions:

Returns a predicate that matches all the objects that were created by any of the provided source revisions.

+ predicateForObjectsWithMetadataKey:

Returns a predicate that matches any object whose metadata contains the provided key.

+ predicateForObjectsWithMetadataKey:allowedValues:

Returns a predicate that matches objects based on the provided metadata key and an array of target values.

+ predicateForObjectsWithMetadataKey:operatorType:value:

Returns a predicate that matches objects based on the provided metadata key, value, and operator.

+ predicateForObjectsWithNoCorrelation

Returns a predicate that matches all objects that are not associated with a HealthKit correlation.