how to trigger a AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK

Question

what application would be able to trigger the audio focus (on a physical device): AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK?

Already tried sending and email to the device and no sound was recieved nor was the onAudioFocusChange() triggered

Answer 1

As of October 2015, there is a "Play test sound" in Google Maps settings:

1. Open Google Maps
2. Open Settings
3. Select "Navigation Settings"
4. Press "Play test sound"

Answer 2

Facebook messages will trigger this AudioFocus