gistfile1.txt

 return Observer(
      builder: (context) {
        if (_feedController.processing == true) {
          return customCupertinoActivity(context);
        } else if (_feedController.errorMessage.isNotEmpty) {
          return Center(
            child: Text(_feedController.errorMessage),
          );
        } else {
          if (_feedController.list != null) {
            if (_feedController.list.length == 0) {
              return EmptyData(
                context: context,
                titleMessage: "",
                bodyMessage: AppLocalizations.of(context).translate("label_feed_em_branco"),
              );
            } else {
              // Testando para saber se a listview deve ser movida para o início.
              if (_feedController.scrollListViewToTop != null &&
                  _feedController.scrollListViewToTop == true &&
                  scrollController.hasClients) {
                _moveScrollListViewPositionTop();
              }
              return Stack(
                children: [
                  Container(
                    color: Color(vestterCustomGray),
                    child: RefreshIndicator(
                      onRefresh: _reloadData,
                      child: ListView.builder(
                        // addAutomaticKeepAlives: true,
                        controller: scrollController,
                        itemCount: _feedController.list.length,
                        itemBuilder: (BuildContext context, int index) {
                          List<PostModel> items = _feedController.list;
                          return FeedCardView(
                            context,
                            post: items[index],
                            user: _user,
                            offsetListViewPosition: offsetPositionListView,
                          );
                        },
                      ),
                    ),
                  ),
                  Visibility(
                    visible: _loading,
                    child: customCupertinoActivity(context),
                  ),
                ],
              );
            }
          } else {
            return customCupertinoActivity(context);
          }
        }
      },
    );