How can I build-in an activity in the own soft keyboard?

Question

I have own soft keyboard:

And Main Activity - dictionary:

Can i embded my Main Activity into soft Keyboard, like this:

In the event handler "On Start" next code:

Intent intent = new Intent(getBaseContext(), FdActivity.class);
            intent.addCategory(Intent.CATEGORY_EMBED);
            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                    getApplication().startActivity(intent);

But my Activity run on FullScreen.