title: Creating a Preference Screen with support (v21) Toolbar
body: <p>I was having trouble using the new Material Design toolbar in the support library on a Preference screen.</p>
  
  <p>I have a settings.xml file as below:</p>
  
  <pre><code>&lt;PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"&gt;
      &lt;PreferenceCategory
          android:title="@string/AddingItems"
          android:key="pref_key_storage_settings"&gt;
  
          &lt;ListPreference
              android:key="pref_key_new_items"
              android:title="@string/LocationOfNewItems"
              android:summary="@string/LocationOfNewItemsSummary"
              android:entries="@array/new_items_entry"
              android:entryValues="@array/new_item_entry_value"
              android:defaultValue="1"/&gt;
  
      &lt;/PreferenceCategory&gt;
  &lt;/PreferenceScreen&gt;
  </code></pre>
  
  <p>The strings are defined elsewhere.</p>