xref: /aosp_15_r20/development/samples/XmlAdapters/_index.html (revision 90c8c64db3049935a07c6143d7fd006e26f8ecca)

<p>This sample demonstrates the use of XML adapters.</p>

<p>An XML Adapter is an XML file which defines the bindings between the data
retrieved from a
<a href="../../../reference/android/content/ContentProvider.html"><code>ContentProvider</code></a>
and the different views of a layout. They are provided by the
<a href="../../../reference/android/widget/Adapters.html"><code>Adapters</code></a>
class.</p>

Three list activities are provided which illustrate this:
<ul>
  <li><a href="src/com/example/android/xmladapters/ContactsListActivity.html"><strong>
  ContactsListActivity</strong></a> uses the device's Contacts provider as its input source.
  Contacts with a phone number are displayed, their photo being retrieved by a dedicated
  <a href="src/com/example/android/xmladapters/ContactPhotoBinder.html"><code>ContactPhotoBinder
  </code></a>.</li>

  <li><a href="src/com/example/android/xmladapters/PhotosListActivity.html"><strong>
  PhotosListActivity</strong></a> retrieves an RSS photo feed and displays the images and their
  titles. The images are downloaded from the URL found in the feed using the
  <a href="src/com/example/android/xmladapters/ImageDownloader.html"><code>ImageDownloader</code>
  </a> helper class.</li>

  <li><a href="src/com/example/android/xmladapters/RssReaderActivity.html"><strong>
  RssReaderActivity</strong></a> also displays items extracted from an RSS feed. An additional
  <a href="src/com/example/android/xmladapters/UrlIntentListener.html"><code>UrlIntentListener
  </code></a> is used to open a browser when one of the news item is tapped.</li>
</ul>

<img alt="XmlPhotosAdapter" src="../images/XmlPhotosAdapter.png" />
<img alt="XmlRssReader" src="../images/XmlRssReader.png" />