title: Theme.NoTitleBar.Fullscreen and preferences button
body: <p>I am working on an app for tablet that uses the <code>Theme.NoTitleBar.Fullscreen</code>: my tablet is under android 4.1.1 and the settings button should be on the top right corner of the app, but with such a style, the button (three little squares aligned vertically) is not visible... how can I fix that?</p>