Apple Sample Code Architecture
Collection

HealthKit sample architecture

Source-backed, high-level architecture notes for Apple sample-code pages grouped in the HealthKit folder.

  • Catalog module label: HealthKit
  • Coverage: 10 / 10 sample pages documented
  • Source policy: archive hashes and extracted-tree references are verified locally before analysis

Samples

Sample Platforms High-level architecture Documented patterns
Accessing a User’s Clinical Records iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → MainViewController → ClinicalDisplayItemProvider → HealthKit APIs. View-controller organization, Protocol-oriented abstraction, Delegate or data-source callbacks
Accessing Data from a SMART Health Card iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain WWDCDemoApp → ContentView → HealthKit APIs. —
Build a workout app for Apple Watch iOS, iPadOS, Mac Catalyst, watchOS A Swift sample with the source-visible chain MyWorkoutsApp → StartView → WorkoutManager → HealthKit APIs. View-controller organization, Delegate or data-source callbacks, SwiftUI environment injection, Publisher-backed observable state
Building a multidevice workout app iOS, iPadOS, Mac Catalyst, watchOS A Swift sample bundle with entry-bearing project variants MirroringWorkoutsSample Watch App, MirroringWorkoutsSample, each leading to HealthKit / HealthKitUI APIs. Delegate or data-source callbacks, SwiftUI environment injection, Binding-based state propagation, Publisher-backed observable state, Actor-isolated state
Building a workout app for iPhone and iPad iOS, iPadOS, Mac Catalyst A Swift sample bundle with entry-bearing project variants WorkoutWidget, WorkoutsOniOSSampleApp, each leading to HealthKit APIs. Model-View-ViewModel, Delegate or data-source callbacks, Actor-isolated state
Creating a Mobility Health App iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → ChartTableViewController → HealthKit APIs. View-controller organization, Protocol-oriented abstraction, Delegate or data-source callbacks
Logging symptoms associated with a medication iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain MedsSymptomsLoggingApp → TabsView → HealthStore → DoseEventProvider → HealthKit / HealthKitUI APIs. Central store, Binding-based state propagation, Actor-isolated state
Reading and Writing HealthKit Series Data iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → DetailViewController → GameControllerHeartSensorSession → HealthKit APIs. View-controller organization, Protocol-oriented abstraction, Delegate or data-source callbacks
Tracking heart rate zones for workouts iOS, iPadOS, Mac Catalyst, watchOS A Swift sample bundle with entry-bearing project variants HKWorkoutZoneSample Watch App, HKWorkoutZoneSampleApp, each leading to HealthKit APIs. Delegate or data-source callbacks, Actor-isolated state
Visualizing HealthKit State of Mind in visionOS iOS, iPadOS, Mac Catalyst, visionOS A Swift sample with the source-visible chain HKStateOfMindDataSampleApp → TabsView → HealthStore → CalendarQualityScoreProvider → HealthKit APIs. Central store, Binding-based state propagation, Actor-isolated state

Cross-sample signals

Recurring documented patterns

Pattern label Sample documents
Delegate or data-source callbacks 7
Actor-isolated state 5
View-controller organization 4
Protocol-oriented abstraction 3
Binding-based state propagation 3
SwiftUI environment injection 2
Publisher-backed observable state 2
Central store 2

Type-role naming evidence

Counts below are declaration-name suffixes, not inferred patterns.

Role suffix Distinct declarations across samples
View 69
Controller 18
Provider 11
Delegate 10
App 9
Model 9
Manager 6
Store 2
Handler 1
ViewModel 1
DataSource 1
Session 1
Scene 1

Swift access-control evidence

These are declaration occurrences in scanned Swift source, including implicit internal declarations.

Access level Occurrences
implicit internal 2003
private 279
public 50
private(set) 7
fileprivate 4

References

Generated from the verified local catalog and completed Markdown documents.