PHAuthorizationStatusNotDetermined: Understanding iOS Photo Library Access

The 'PHAuthorizationStatusNotDetermined' is an enumeration value that represents the authorization status for accessing the user's photo library in iOS. It indicates that the user has not yet made a decision to grant or deny access to the photo library.

When requesting access to the photo library using the 'PHPhotoLibrary' class, the initial authorization status will be 'PHAuthorizationStatusNotDetermined'. In this state, the app can request access to the photo library by calling the 'requestAuthorization(_:)' method and passing in a completion handler. The user will then be presented with a system prompt asking for permission to access the photo library.

Once the user makes a decision and responds to the authorization prompt, the authorization status will change to one of the following values:

• 'PHAuthorizationStatusAuthorized': The user has granted access to the photo library.
• 'PHAuthorizationStatusDenied': The user has denied access to the photo library.
• 'PHAuthorizationStatusRestricted': Access to the photo library is restricted, possibly due to parental controls or other system settings.
• 'PHAuthorizationStatusLimited': The user has granted limited access to the photo library.

It is important for apps to handle each of these authorization statuses appropriately and provide the user with clear explanations and instructions on how to change the authorization settings if needed.