title: Extending styles and themes confusion
body: <p>In my manifest I used to have something like this</p>
  
  <pre><code>&lt;activity android:name=".MyActivity"
       android:label="@string/app_name"
          name="Theme.NoTitleBar"...
  </code></pre>
  
  <p>and it worked great, I mean the title bar was not shown.</p>
  
  <p>But now I want to customize the theme (I want to extend the default android theme)
  and I created this theme</p>
  
  <pre><code>&lt;style name="Theme.NoTitleBar.new_skin" parent="android:Theme"&gt;
          &lt;item name="text_body_read"&gt;@style/text_body_read&lt;/item&gt;
          &lt;item name="text_body_unread"&gt;@style/text_body_unread&lt;/item&gt;
      &lt;/style&gt;
  </code></pre>
  
  <p>then in the manifest I set <code>name="Theme.NoTitleBar.new_skin"</code>, but the title bar is still shown.</p>
  
  <p>how can I hide the title bar and still have my new custom theme ?</p>
  
  <p>and one more question does adding dots '.' means extending when working with styles ?</p>