I figured this could be done by overriding any existing hardware button callbacks, but apparently you can not outside of your app (see this SO question: http://

I figured this could be done by overriding any existing hardware button callbacks, but apparently you can not outside of your app (see this SO question: http://stackoverflow.com/questions/2986337/is-it-possible-to-create-an-android-service-that-listens-for-hardware-key-presse http://stackoverflow.com/questions/2986337/is-it-possible-to...).