AVAudioSession.InterruptionReason.appWasSuspended
The system suspends the app and interrupts the audio session.
Declaration
case appWasSuspendedDiscussion
Starting in iOS 10, the system deactivates the audio session of most apps when it suspends the app process. The next time the app runs, it receives a notification that the system deactivated its audio session. This notification is necessarily delayed in time, because the system can’t send it until the app restarts.