iOS11 photo library access is possible even if settings are set to “never”

Question

if UIImagePickerController.isSourceTypeAvailable(.photoLibrary) {
    let imagePicker = UIImagePickerController()
    imagePicker.sourceType = .photoLibrary
    imag         


        

Answer 1

Is this expected behaviour? - YES.

From the docs - https://developer.apple.com/documentation/uikit/uiimagepickercontroller/1619144-issourcetypeavailable

true if the device supports the specified source type; false if the specified source type is not available.

It tells you if the device supports the source type and not if the app has the permission to access it.

As you already mentioned in the question, PHPhotoLibrary.authorizationStatus() would be correct way to check this.