iOS: How do I detect if music is playing in any background music app?

Question

I currently have my game correctly handling disabling its own BGM when music is playing in the built-in iPod app, but it does not detect when an app such as Pandora is playi

Answer 1

As of iOS 8, the secondaryAudioShouldBeSilencedHint property should be used:

/* Will be true when another application with a non-mixable audio session is playing audio.  Applications may use
this property as a hint to silence audio that is secondary to the functionality of the application. For example, a game app
using AVAudioSessionCategoryAmbient may use this property to decide to mute its soundtrack while leaving its sound effects unmuted.
Note: This property is closely related to AVAudioSessionSilenceSecondaryAudioHintNotification.
*/
@property(readonly) BOOL secondaryAudioShouldBeSilencedHint  NS_AVAILABLE_IOS(8_0);