Using Pull-To-Refresh

Activity.java

// Set a listener to be invoked when the list should be refreshed.
PullToRefreshListView pullToRefreshView = (PullToRefreshListView) findViewById(R.id.pull_to_refresh_listview);
pullToRefreshView.setOnRefreshListener(new OnRefreshListener<ListView>() {
    @Override
    public void onRefresh(PullToRefreshBase<ListView> refreshView) {
        // Do work to refresh the list here.
        new GetDataTask().execute();
    }
});

private class GetDataTask extends AsyncTask<Void, Void, String[]> {
    ...
    @Override
    protected void onPostExecute(String[] result) {
        // Call onRefreshComplete when the list has been refreshed.
        pullToRefreshView.onRefreshComplete();
        super.onPostExecute(result);
    }
}

Activity2.java

// Set a listener to be invoked when the list should be refreshed.
PullToRefreshListView pullToRefreshView = (PullToRefreshListView) findViewById(R.id.pull_to_refresh_listview);
pullToRefreshView.setOnRefreshListener(new OnRefreshListener<ListView>() {
    @Override
    public void onRefresh(PullToRefreshBase<ListView> refreshView) {
        // Do work to refresh the list here.
        new GetDataTask().execute();
    }
});

private class GetDataTask extends AsyncTask<Void, Void, String[]> {
    ...
    @Override
    protected void onPostExecute(String[] result) {
        // Call onRefreshComplete when the list has been refreshed.
        pullToRefreshView.onRefreshComplete();
        super.onPostExecute(result);
    }
}

layout.xml

<!--
  The PullToRefresh-ListView replaces a standard ListView widget,
  and has all the features android.widget.ListView has.
-->
<eu.erikw.PullToRefreshListView
    android:id="@+id/pull_to_refresh_listview"
    android:layout_height="fill_parent"
    android:layout_width="fill_parent" />

layout2.xml

<!--
  The PullToRefreshListView replaces a standard ListView widget.
  The ID CAN NOT be @+id/android:list
-->
<com.handmark.pulltorefresh.library.PullToRefreshListView
    android:id="@+id/pull_to_refresh_listview"
    android:layout_height="fill_parent"
    android:layout_width="fill_parent" />