Mastering iOS 12 Programming - Third Edition

Requesting access to the HealthKit Store

Applications that want access to health-related data must ask permission for every type of data they want to access. If your app requires access to heart rate data, weight data, and activity data, that means that you must request access for each different data type. A single authorization request can ask for access to multiple data types at once, and the user can manually decide which data types can be accessed.

When you want to use certain data types from the HealthKit store, it's essential that you make sure your user understands why you need access to this data and to request access at an appropriate time. If your app has an onboarding flow, you could add a page that outlines the health data your ...