samples/Support4Demos/src/com/example/android/supportv4/accessibility/_index.html

<p>This section includes samples showing the use of the accessibility
features of the static support library.</p>

<h3>Accessibility Manager</h3>
<dl>
  <dt><a href="AccessibilityManagerSupportActivity.html">Accessibility Manager</a></dt>
  <dd>This sample demonstrates how to use the support library to register an
  AccessibilityManager.AccessibilityStateChangeListener to watch changes to
  the global accessibility state and AccessibilityManager to query information
  about enabled accessibility services.</dd>
</dl>

<h3>Accessibility Delegate</h3>
<dl>
  <dt><a href="AccessibilityDelegateSupportActivity.html">AccessibilityDelegate</a></dt>
  <dd>This sample demonstrates how to use the support library to register a
  View.AccessibilityDelegate that customizes the accessibility behavior of
  this View.</dd>
</dl>

<h3>Role Description</h3>
<dl>
  <dt><a href="AccessibilityRoleDescriptionSupportActivity.html">Role Description</a></dt>
  <dd>This sample demonstrates how to use the support library to set a
  custom role description on your views. It also gives examples of where
  role descriptions are appropriate and inappropriate.</dd>
</dl>