title: Navigation Drawer icon on the top right is showing Back arrow icon insted of Hamburger icon
body: <p>I have Create a new android app with the Navigation Drawer Activity.
  When i execute the app, the icon on the right corner is showing the back Arrow but it has to be the 3 line's icon.</p>
  
  <p>The icon R.drawable.ic_drawer is this </p>
  
  <p><img src="https://i.stack.imgur.com/cXAcP.png" alt="enter image description here"></p>
  
  <p>In NavigationDrawerFragment class.</p>
  
  <pre><code>// ActionBarDrawerToggle ties together the the proper interactions
      // between the navigation drawer and the action bar app icon.
      mDrawerToggle = new ActionBarDrawerToggle(
              getActivity(),                    /* host Activity */
              mDrawerLayout,                    /* DrawerLayout object */
              R.drawable.ic_drawer,             /* nav drawer image to replace 'Up' caret */
              R.string.navigation_drawer_open,  /* "open drawer" description for accessibility */
              R.string.navigation_drawer_close  /* "close drawer" description for accessibility */
      ) 
  </code></pre>
  
  <p>When i execute the App i'm getting Arrow icon on the right.</p>
  
  <p><img src="https://i.stack.imgur.com/l9ODN.png" alt="enter image description here"></p>
  
  <p>After the selection also the Icon is same.</p>
  
  <p><img src="https://i.stack.imgur.com/YVXMO.png" alt="enter image description here"></p>
  
  <p>how do i change it now ?</p>