Design

Health app

Diagram

Authorization flow

1. Open app.
2. Check HealthKit is available (IsAvailable).
   1. If no, show App not supported on iPad.
3. Ask for permissions (InitHealthKit, built-in method will automatically skip if already prompted)
4. Check for permissions (AuthStatus)
   1. If no write permissions, show a page that prompts for the permissions.
   2. If no read, but write, will have to technically operate without knowledge.
5. Redirect to app

Hints

• Missing data

  If you are observing missing weight data from other sources, please make sure you have granted WeightTracker the correct read permissions (“ALLOW “WEIGHTTRACKER” TO READ) in Settings > Health > Data Access & Devices > WeightTracker.

• Missing permissions

  Please allow all operations to your Apple Health app in Settings > Health > Data Access & Devices > WeightTracker.

Limitations

isAvailable - HealthKit is not available on iPad. https://developer.apple.com/documentation/healthkit/hkhealthstore/1614180-ishealthdataavailable

getAuthStatus - Obtain write auth status to Health app. Cannot know read status. https://developer.apple.com/documentation/healthkit/hkhealthstore/1614154-authorizationstatusfortype?language=objc

Resources

• Wrapper for HealthKit SDK for React Native