/** Called each time a new audio device has been added or removed. */
private void onAudioManagerChangedState() {
Log.d(
TAG,
"onAudioManagerChangedState: devices="
+ audioDevices
+ ", selected="
+ selectedAudioDevice);
// Enable the proximity sensor if there are two available audio devices
// in the list. Given the current implementation, we know that the choice
// will then be between EARPIECE and SPEAKER_PHONE.
if (audioDevices.size() == 2) {
AppRTCUtils.assertIsTrue(
audioDevices.contains(AudioDevice.EARPIECE)
&& audioDevices.contains(AudioDevice.SPEAKER_PHONE));
// Start the proximity sensor.
proximitySensor.start();
} else if (audioDevices.size() == 1) {
// Stop the proximity sensor since it is no longer needed.
proximitySensor.stop();
} else {
Log.e(TAG, "Invalid device list");
}
if (onStateChangeListener != null) {
// Run callback to notify a listening client. The client can then
// use public getters to query the new state.
onStateChangeListener.run();
}
}
public void close() {
Log.d(TAG, "close");
if (!initialized) {
return;
}
unregisterForWiredHeadsetIntentBroadcast();
// Restore previously stored audio states.
setSpeakerphoneOn(savedIsSpeakerPhoneOn);
setMicrophoneMute(savedIsMicrophoneMute);
audioManager.setMode(savedAudioMode);
audioManager.abandonAudioFocus(null);
if (proximitySensor != null) {
proximitySensor.stop();
proximitySensor = null;
}
initialized = false;
}