title: Back button in action bar opening and closing NavDrawer
body: <p>I have a nav drawer set up in my main activity.  In one of my fragments I want to hide the hamburger icon and show the back arrow (achieved)</p>
  
  <pre><code>   ActionBar bar = mMainActivity.getSupportActionBar();
     bar.setDisplayShowHomeEnabled(true);
     bar.setDisplayHomeAsUpEnabled(true);
     bar.setDefaultDisplayHomeAsUpEnabled(true);
  </code></pre>
  
  <p>The problem is if I click on the arrow it opens the drawer.  So I added this: <code>mMainActivity.mActionBarDrawerToggle.setDrawerIndicatorEnabled(false);</code></p>
  
  <p>The problem is when I add this line, nothing displays.  The drawer icon and the back or up icon.  So can anyone tell me what I'm doing wrong.?</p>
  
  <p><strong>EDIT</strong></p>
  
  <p>There seems to be confusion as to what I have done and not done.  The <code>mMainActivity.mActionBarDrawerToggle.setDrawerIndicatorEnabled(false);</code> was added temporarily, I removed it again as when I did, there were no icons displayed neither nav drawer or back arrow.</p>
  
  <p>Below is how I handle my menu item clicks:</p>
  
  <pre><code> @Override
      public boolean onOptionsItemSelected(MenuItem item) {
  
  
          // Handle action bar item clicks here. The action bar will
          // automatically handle clicks on the Home/Up button, so long
          // as you specify a parent activity in AndroidManifest.xml.
  
          switch (item.getItemId()){
              case R.id.search_badge:
                  L.i("search", "search");
                  return false;
  
  
              case android.R.id.home:
                  L.i("home", "home pressed");
                  break;
  
              case R.id.action_done:
  
                  actionDone();
                  //for testing
                  //checkSelectedInterests();
                  //TODO: MLC
                  L.i("done", "done pressed");
                  break;
  
              default:
                  ;;
          }
          return super.onOptionsItemSelected(item);
      }
  </code></pre>
  
  <p>however</p>
  
  <pre><code> case android.R.id.home:
                  L.i("home", "home pressed");
                  break;
  </code></pre>
  
  <p>is never hit</p>
  
  <p>I hope this clarifies it.  So at the moment the nav drawer icon is hiding and the back arrow is displayed.  When I click the back arrow it opens the nav drawer instead of entering my switch case.</p>