FacebookFriendsPortlet.java 文件源码

private List<String> getIdsOfPaginatedFriends(RenderRequest request, RenderResponse response, PortletSession session,
        FacebookClientWrapper facebookClient) throws PortletException, IOException {
    // Count total number of friends
    Integer friendsCount = getFriendsCount(session, facebookClient);

    // Obtain number of current page
    Integer currentPage = getCurrentPageNumber(request, session);

    Integer indexStart = (currentPage - 1) * ITEMS_PER_PAGE;
    List<NamedFacebookType> friendsToDisplay = facebookClient.getPageOfFriends(indexStart, ITEMS_PER_PAGE);
    getPaginatorUrls(friendsCount, response);

    // Collect IDS of friends to display
    List<String> ids = new ArrayList<String>();
    for (NamedFacebookType current : friendsToDisplay) {
        ids.add(current.getId());
    }

    return ids;
}