ReadActivity.xml

<?xml version="1.0" encoding="UTF-8" ?> 
<Module>
  <ModulePrefs title="Read Activities - v0.8" >
    <Require feature="opensocial-0.8"/>
  </ModulePrefs> 
  <Content type="html">
  <![CDATA[ 
  <div id="content_div"></div>
  <script type="text/javascript">

  var div = document.getElementById('content_div');

  /**
   * Create the new activity and send it to the server.
   */
  
  function getData() {
    var req = opensocial.newDataRequest();
    var viewer = opensocial.newIdSpec({'userId' : 'VIEWER'});
    req.add(req.newFetchActivitiesRequest(viewer), 'activities');
    req.send(onLoadActivities);
  };

function onLoadActivities(dataResponse) {
  var data = dataResponse.get('activities').getData();
  var activities = data.asArray();
  for (var i = 0; i < activities.length; i++) {
    alert(activities[i].getField(opensocial.Activity.Field.TITLE) + " at " + activities[i].getField(opensocial.Activity.Field.POSTED_TIME));
  }
};

  //Call getData as soon as the gadget finishes loading.
    gadgets.util.registerOnLoadHandler(getData);
  </script>
  ]]> 
  </Content>
</Module>