Posted after the system detects that the amount of available disk space is getting low. The notification is posted to the default notification center.
- iOS 9.0+
- UIKit for Mac 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
After receiving this notification, the app should release any on-demand resources that are not required. Call
end to release the managed resources. If the app is in the background and the app does not free up enough space, it may be terminated.