Google Glass : return to voice_trigger / voice_prompt from the Activity

I am new to Glass development, I have a simple application

Ok Glass => Dictionary (voice_trigger) => Say a word to search (voice_prompt) => MyActivity (app)

If I do a SWIPE_DOWN, I go back to the first view : Ok Glass. From my Activity, I would like to launch another research with a gesture, and go back to the voice_prompt view, without saying "Ok Glass" and "Dictionary".

Is it possible or do I need to avoid voice_prompt is this case ?

Thanks

Solution

In your activity, you should be able to do something like:

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if(keyCode == KeyEvent.KEYCODE_BACK) {
        Log.i(TAG, "BACK PUSHED");
        Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        startActivityForResult(intent, SPEECH_REQUEST);
        return true;
    }

    return super.onKeyDown(keyCode, event);
}

By doing this, you stop the default handler for the swipe down and set your own, which causes the speech recognition activity to appear (https://developers.google.com/glass/develop/gdk/voice#starting_speech_recognition).