I would like to use 3D Touch in my app and I want to provide virbation feedbacks to the user when 3D Touch is used.
I've searched online and I found these three methods.
import AudioToolbox
AudioServicesPlaySystemSound(1519) // Actuate `Peek` feedback (weak boom)
AudioServicesPlaySystemSound(1520) // Actuate `Pop` feedback (strong boom)
AudioServicesPlaySystemSound(1521) // Actuate `Nope` feedback (series of three weak booms)
(from http://stackoverflow.com/a/36320245/2577123)
The method AudioServicesPlaySystemSound is documented in the API reference, but however the documentation didn't state what those numbers mean.
So I wanna ask, do these 3 methods count as private APIs?
Would I be rejected for scholarship if I include any private API in my app?
Thank you.