title: Android App FullScreen
body: <p>I'm a beginner android developer and one of the problems that I am facing is how to make my application full screen.
  I have used the:</p>
  
  <pre><code>"android:theme=”@android:style/Theme.NoTitleBar.Fullscreen"
  </code></pre>
  
  <p>But it actually just removes the status and the action bar, but it keeps the navigation bar.
  I tried various different methods without any success, but I know that it's possible since I have lots of apps the do not show the navigation bar like Subway Surfers.</p>
  
  <p>Which is the right way to make it?</p>