title: appcompat v7 21 NavigationDrawerToggle hamburger notShowing Up
body: <p>I have drawerActivity and i use this to construct NavigationDrawerTogggle</p>
  
  <pre><code>mDrawerToggle = new 
          ActionBarDrawerToggle((Activity)this, mDrawerLayout,
          R.string.drawer_open,
          R.string.drawer_close) {};
  
              mDrawerToggle.setDrawerIndicatorEnabled(true);
  
              getActionBar().setDisplayHomeAsUpEnabled(true);
              getActionBar().setHomeButtonEnabled(true);
              getActionBar().setDisplayShowHomeEnabled(true);  
  </code></pre>
  
  <p>in my  phone android 4.3 drawer toggle looks like lolipop drawer (hamburger -> arrow animation), in android 4.2.2 it shows only this " &lt; " . </p>