A Boolean value that indicates whether another app is playing audio.
- iOS 6.0+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
This property returns
YES if any other audio is playing, including audio from an app using the
AVAudio category. Most apps should instead use the
secondary property, because it’s more restrictive when considering whether primary audio from another app is playing.