HealthKit requestAuthorization(toShare:, read, completion: ) : is there are way to know whether it was promped at least once?

Question

我目前正在使用HealthKit，但我想知道：是否可以知道以前是否曾询问过requestAuthorization？

Answer 1

Based on the documentation, it appears not. You can ask for authorization status for a particular HKObjectType , but this will only tell you if can save data of that type. You can't tell whether read access has been granted. According to the docs :

To help prevent possible leaks of sensitive health information, your app cannot determine whether or not a user has granted permission to read data.

You can call requestAuthorization repeatedly , and the user will only be prompted if they have not previously granted access to the HKObjectType 's requested:

If the user has already chosen to grant or prohibit access to all of the types specified, the completion is called without prompting the user.