title: Can't set Logo in ActionBar
body: <p>I've seriously tried everything. 
  I've tried both <code>setLogo()</code> and <code>setIcon()</code>.</p>
  
  <p>I've tried adding <code>android:logo=""</code> in manifest. </p>
  
  <p>I've made sure to try both supportActionBar and regular ActionBar. (I'm running sdk 21 with a min sdk of 15.)</p>
  
  <p>The funny thing is if I try to use the regular ActionBar I get null pointers but when I use the support ActionBar it at least works.  </p>
  
  <p>Is there anything else I can try...? Here's where I try and change it.</p>
  
  <pre><code>public class MainActivity extends ActionBarActivity {
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
  
      ActionBar ab = getSupportActionBar();
      ab.setLogo(R.drawable.logo);
  </code></pre>