Android dispatchKeyEvent , onKeyDown callbacks not working with gesture volume control (Huawei mate 30 pro)

Question

I have added dispatchKeyEvent and onKeyDown to detect volume change events inside activity which is working fine with devices having physical volume buttons. In the case of Huawei mate 30 pro above events are not firing as it doesn't have physical volume buttons but a gesture to control volume. Any solution??

 override fun onKeyDown(keyCode: Int, event: KeyEvent): Boolean {
    d(TAG, "signal onKeyDown $keyCode")
    when (keyCode) {
        KeyEvent.KEYCODE_HOME -> {
            d(TAG, "signal onKeyDown KEYCODE_HOME")
            if (alertDialog != null && alertDialog?.isShowing == true) {
                releaseDataAndFinishActivity()
            }
           
            return false
        }
        KeyEvent.KEYCODE_BACK -> {
            onBackPressed()
            return false
        }
        KeyEvent.KEYCODE_VOLUME_DOWN -> {
            updateVolumeOnKeyPress(false)
            return true
        }
        else -> return true
    }
}

override fun onKeyUp(keyCode: Int, event: KeyEvent?): Boolean {
    if (keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
        updateVolumeOnKeyPress(true)
        return true
    }
    return false
}

override fun dispatchKeyEvent(event: KeyEvent?): Boolean {
    d(TAG, "signal dispatchKeyEvent $event")
    return super.dispatchKeyEvent(event)
}

Answer 1

About How to Detect Volume Change events in Activity on the Mate30 Pro, You can achieve this by listening to the android.media.VOLUME_CHANGED_ACTION broadcast.