init(heartbeatSeries:dataHandler:)

Declaration

init(heartbeatSeries: HKHeartbeatSeriesSample, dataHandler: @escaping  @Sendable (HKHeartbeatSeriesQuery, TimeInterval, Bool, Bool, (any Error)?) -> Void)

Parameters

• heartbeatSeries:

  The series sample containing the heartbeat data.

• dataHandler:

  The handler called by the query. The handler takes the following parameters:

  query

  The query that returned the heartbeat data.

  timeSinceSeriesStart

  The time of the heartbeat, measured from the series builder’s start date. This must be a positive value.

  precededByGap

  A Boolean value that indicates whether this heartbeat was immediately preceded by a gap in the data, indicating that one or more heartbeats may be missing.

  done

  A Boolean value that indicates whether the query is complete.

  error

  If an error occurred, this contains an object that describes the error; otherwise, nil.

Discussion

The system calls the dataHandler once for each heartbeat until either the done parameter is true, or you call stop(_:).