title: Make ActionBar title uppercase
body: <p>How do I make the ActionBar title uppercase? Some answers suggest putting <code>&lt;item name="android:textAllCaps"&gt;true&lt;/item&gt;</code> but this has no effect when I put it in the actionBar style or actionBar's <code>titleTextStyle</code>. It only has an effect when I put in in the AppTheme style but that makes a bunch of things in my app also in all caps which I don't want. </p>
  
  <p>My styles:</p>
  
  <pre><code>&lt;style name="AppTheme" parent="AppBaseTheme"&gt;
      &lt;!-- snip snip --&gt;
      &lt;item name="android:actionBarStyle"&gt;@style/NewActionBar&lt;/item&gt;
  &lt;/style&gt;
  
  &lt;style name="NewActionBar" parent="@style/Widget.AppCompat.ActionBar"&gt;
      &lt;item name="android:background"&gt;@color/text_pink&lt;/item&gt; &lt;!-- no effect --&gt;
      &lt;item name="android:titleTextStyle"&gt;@style/NewActionBarTitle&lt;/item&gt;
      &lt;item name="android:displayOptions"&gt;showHome|showTitle&lt;/item&gt;
      &lt;item name="android:textAllCaps"&gt;true&lt;/item&gt; &lt;!-- no effect --&gt;
  &lt;/style&gt;
  
  &lt;style name="NewActionBarTitle"&gt;
      &lt;item name="android:textSize"&gt;@dimen/tiny_text_size&lt;/item&gt; &lt;!-- no effect --&gt;
      &lt;item name="android:textAllCaps"&gt;true&lt;/item&gt; &lt;!-- no effect --&gt;
  &lt;/style&gt;
  </code></pre>
  
  <p>And why do the <code>NewActionBar</code> and <code>NewActionBarTitle</code> styles appear to have no effect no matter what I put in them? Is there something wrong with my styles or my action bar or what?</p>
  
  <p>Edit: I've just deleted entirely the styles <code>NewActionBar</code> and <code>NewActionBarTitle</code> (and the reference to them in the <code>AppTheme</code> style) and the action bar looks completely the same. So something is broken. What could it be?</p>