title: Unable to remove title/action bar when using notification drawer
body: <p>I am unable to remove the action/title bar from the activity when using the notification drawer. I've changed both the XML code and Java code to remove it.</p>
  
  <pre><code> this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
   WindowManager.LayoutParams.FLAG_FULLSCREEN);
  
   getWindow().getDecorView().setSystemUiVisibility
  (View.SYSTEM_UI_FLAG_FULLSCREEN);
  
   setContentView(R_layout_activity);
  
   getSupportActionBar().hide();   
  </code></pre>