AlwaysOnHotwordDetector Examples for Android Mode

I have been lurking around StackExchange and Processing forums for any leads on a starting project for AlwaysOnHotwordDetector voice service for Android Mode on Processing but I don’t think many have ventured on this project path.

I want to automate my speech recognizer with a hotword trigger, I would love to have a hands free operation on my home automation project similar to Alexa.

Can anyone direct me to a good write up to start on studying for the Voice Service that i need?