Android: ListFragment: How to refresh list

I have a list view which is shown on a fragment. I have a button at the bottom of the screen in which when pressed, will call a webservice to reteive any additional data. If there is additional data, I need to add it to the list view. I have searched this forum and so many other web sites to try and find how to do it, but I have had no success. Any help is much appreciated. I am now thinking do I need to add the fragment dyncamically instead of having it defined on the following XML layout. I am using a ListFragment to inflate a list view on the screen. I have a screen with two fragments on it. The XML for the screen is below: - ``` <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <LinearLayout android:layout_width="wrap_content" android:layout_height="0dp" android:layout_weight="1" android:orientation="horizontal" > <fragment android:name="atos.mobilereporting.com.ReportList" android:layout_width="323dp" android:layout_height="match_parent" /> <fragment android:name="atos.mobilereporting.com.ReportDetail" android:layout_width="958dp" android:layout_height="match_parent" /> </LinearLayout> <Button android:id="@+id/getReports" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Refresh Mobile Reports" /> </LinearLayout> ``` The code to inflate the view is below: - ``` public class ReportList extends ListFragment { public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Get list of reports... repList = ReportDefinitionFactory.buildReportList(3); activity = getActivity(); ListAdapter la = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, ReportDefinitionFactory.getReportDescriptions(repList)); setListAdapter(la); } } ``` This code shows a simple list view with 3 rows on it. It is at this point I must stop as I do not know were to go from here. I have the code which will add an additional row to the array that is used to initially build the list view, but I do not know how I can invoke a refresh on the list view. Thanks Martin