Does LSApplicationWorkspace not work on iOS 11?

Question

I have an app in private which need to scan all applications and schemes and get it by using private API LSApplicationWorkspace defaultWorkspace with others functio

Answer 1

Private API is just that—private API. Using it is completely unsupported, and as such, you cannot rely on a private API continuing to work in future versions of the OS.

In addition, I would be highly surprised if an app that used private API were able to get into the App Store, since it's one of the things Apple's reviewers scan for.