How do I remove the title bar in android studio?

Question

In my app there is this title bar at the top where the overflow menu would be, but I don\'t need settings and only have one screen. When I change the theme like described in

Answer 1

Just use setTitle(null) above

toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

The title will disappear then you can use the logo of your choice.....