title: Compatibility Issues over inbuilt Android studio Styles for apps
body: <p>I am using android studio version 1.0 .i would like to use my app's page without the <code>ActionBar</code> and <code>TitleBar</code> as well. How could I achieve that  only by extending my Activity to AppCompatActivity?</p>
  
  <p>I tried changing all my necessary <code>AppThemes</code> and created my Custom <code>Theme</code> &amp;<code>Styles</code>.</p>
  
  <p>I have followed the <a href="https://stackoverflow.com/questions/20653305/full-screen-theme-for-appcompat">instructions</a>. Still I cannot get the full screen.</p>