HealthKit – Apple Watch – Data and Authorization

HKHealthStore.Authorization.Example.swift

if HKHealthStore.isHealthDataAvailable() { 
  let healthStore = HKHealthStore() 
  let heartRateQuantityType = HKObjectType.quantityType(forIdentifier: .heartRate)! 
  let allTypes = Set([HKObjectType.workoutType(), heartRateQuantityType ]) 
  healthStore.requestAuthorization(toShare: nil, read: allTypes) { (result, error) in 
    if let error = error { 
      // deal with the error return 
    } 
    guard result else { 
      // deal with the failed request return 
    } 
    // begin any necessary work if needed 
  } 
}