title: Set Background Color of Navigation Drawer
body: <p>I wanted to set the background color of my Navigation drawer in java but it seems as <code>setBackgroundColor</code> and all similar methods have no effect.
  Only the XML line <code>android:background="@color/mycolor"</code> is working. If remove the xml line and try one of the methods the drawer just stays transparent.</p>
  
  <p>Any ideas?</p>