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

<p>This is a demo application highlighting how to use some of the new APIs in
Honeycomb, including:</p>

<ul>
  <li><a href="../../../guide/topics/fundamentals/fragments.html">Fragments</a></li>
  <li>The <a href="../../../guide/topics/ui/actionbar.html">action bar</a>
      and contextual action bar</li>
  <li>Drag and drop</li>
  <li>The new <a href="../../../reference/android/animation/package-summary.html"><code>android.animation</code></a>
      framework</li>
  <li>Custom notifications</li>
  <li>For information on how to implement <a href="../../../reference/android/widget/StackView.html"><code>StackView</code></a>
      and other adapter-based app widgets, see <a href="../StackWidget/index.html">StackView App Widget</a></li>
</ul>

<p>The image gallery shows how all these pieces can work together in one application.</p>

<p class="note"><strong>Update:</strong> This app has been updated for Android 4.0 to support
handsets by reusing fragments in separate activities when on smaller screens.</p>

<p>The application includes the following key classes:<p>
<ul>
  <li><a href="src/com/example/android/hcgallery/ContentFragment.html">ContentFragment</a>
      A fragment responsible for containing the "content" of the application.
      Displays images, receives drag/drop events from other fragments, and can
      invoke the contextual action bar using
      <a href="../../../reference/android/view/ActionMode.html">action modes</a>.</li>
  <li><a href="src/com/example/android/hcgallery/TitlesFragment.html">TitlesFragment</a>
      Shows a ListView of photos to display in the ContentFragment. Photos can
      be chosen either by tapping on the listview, or dragging them from the
      list to the content area. The list of photos displayed depends on the
      category selected in the ActionBar.</li>
  <li><a href="src/com/example/android/hcgallery/MainActivity.html">MainActivity</a>
      This is the main entry point of the application. MainActivity is
      responsible for initialization of the ActionBar, TitlesFragment, and
      ContentFragment. MainActivity is also responsible for keeping track of
      the currently selected theme and currently selected photo when the
      activity is recreated, such as when the screen is rotated or an intent to
      a separate activity is fired (such as the included Camera sample).
      MainActivity also contains code demonstrating how to animate
      showing/hiding fragments (in this case, the TitlesFragment) and the
      ActionBar, demonstrating how to smoothly transition between states
      in your application.</li></ul>

<img alt="Screenshot" src="../images/hcgallery.png" />
<img alt="Screenshot" src="../images/hcgallery-phone1.png" />
<img alt="Screenshot" src="../images/hcgallery-phone2.png" />