Keyword activated speech recognition on android

Question

Is it possible to use this cool voice activation feature of "google now" in you own application?

So what I want is that the user does not have to trigger the activation by pressing a button or sth. like that.

I'd rather like to have an automatic speech recognition activated by a keyword. For example: When "google now" is opened you only have to say: "google". After that command the system is listening for the actual input.

Is this possible by using the android API? Or is there any open source library that provides this behavior?

I know that this is possible with "open ears" but unfortunately open ears is not available for android.

Answer 1

You have to run the speech recognition as a service instead of as an activity.

Check out this git for sample code on how to do this: https://github.com/gast-lib/gast-lib‎

Answer 2

I would suggest using CMU Sphinx, or just restarting your recognizer on every "onResults" and "onError" function call.