Voice command in android activity : I have an activity in my app that have a counter for 2 differents teams, now, to add a point to this teams I need to click a button. 
I want to do this also with a voice command. 

The thing is that I need: offline voice recognition, add points but not restart the activity, wait continouslly for another voice command, only work in one Activity.

And the language will be spanish.

Do you know any way of do this?
I have been searching and find PocketSphinx, but I don't know if this is the best option.