In my app I'm using [NSURL URLWithString:@"App-Prefs:root=Privacy&path=LOCATION"] to open settings screen. Will it be rejected by apple as according to some sources this is considered a private API?
Yes. The only legal way to open Settings is to use UIApplicationOpenSettingsURLString.
My app just got rejected because of this, so yes, it is considered as private API :)
Here's the rejection notice from Apple:
Your app uses the "prefs:root=" non-public URL scheme, which is a private entity. The use of non-public APIs is not permitted on the App Store because it can lead to a poor user experience should these APIs change.
To resolve this issue, if you are navigating to Settings > Privacy. "Just remove that code" and put a simple alert showing Enable location services.
Because from iOS 10 apple consider it is as private entity. So you can not go through it.
There’s no supported way to open Settings to the Wi-Fi/Language/Location ‘page’. The fact that this worked in iOS 9 is a bug that’s been fixed in iOS 10.
For more info please refer https://forums.developer.apple.com/message/186656#186656
来源：https://stackoverflow.com/questions/49487846/is-it-considered-a-private-api-to-use-app-prefsroot