Listen to volume changes events on Android

Question

Is there any way to listen to the event of volume change on Android, without just taking over the volume buttons?

The only thing I've found that works is here, but it works only after the volume control has disappeared.

Not all devices have volume buttons, and I need to capture the volume changes as soon as they occur, and not after the volume dialog is gone.

Answer 1

Use broadcast receiver VOLUME_CHANGED_ACTION then use AudioManager to obtain current volume.

<receiver android:name="VolumeChangeReceiver" >
    <intent-filter>
         <action android:name="android.media.VOLUME_CHANGED_ACTION" />
    </intent-filter>
</receiver>