My app uses the speakerphone if no headset is plugged in. If a headset is
plugged in, Android automatically switches audio playback to the headset.
However, when the headset is unplugged, the audio plays through the
earpiece. Is there a way to switch to the speakerphone when the headset is
unplugged? There does not seem to be any callback when the headset is
unplugged.
logcat shows that routing changes to 1 (AudioManager.ROUTE_EARPIECE). I
could use a timer and keep checking for AudioManager#getRouting, but that
method is deprecated.
V/HeadsetObserver( 107): Headset UEVENT: {SUBSYSTEM=switch, SWITCH_STATE=0,
DEVPATH=/devices/virtual/switch/h2w, SEQNUM=6223, ACTION=change,
SWITCH_NAME=h2w}
W/Vold ( 71): Ignoring unknown switch 'h2w'
V/HeadsetObserver( 107): Intent.ACTION_HEADSET_PLUG: state: 0 name: h2w
mic: 0
D/AudioHardware( 76): AudioStreamOutALSA::setParameters() routing=1
D/AudioHardware( 76): AudioHardware pcm playback is going to standby.
D/AudioHardware( 76): closePcmOut_l() mPcmOpenCnt: 1
D/AudioHardware( 76): AudioHardware pcm playback is exiting standby.
D/AudioHardware( 76): openPcmOut_l() mPcmOpenCnt: 0
Thanks
Shri
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