FlutterListView with additional features.

try again widget empty widget refresh indicator load more items loading

Features

• flutter list view
• pagination option (infinity scroll)
• view model detection using generic types
• refresh option
• error handling while getting data
• show empty widget when list is empty
• show loading widget while getting data
• easy usage
• makes your code clean and readable

Getting started

Import:

    import 'package:advanced_list_view/advanced_list_view.dart';

Usage

Define your listview (PersonViewModel is your model which will return to you on itemBuilder and you can use current item value):

AdvancedListView<PersonViewModel>(
    items: listItems,
    canRefresh: true,
    showLoadingWidget: showLoadingWidget,
    showErrorWidget: showErrorWidget,
    shrinkWrap: true,
    showEmptyWidget: showEmptyWidget,
    onRefresh: _onRefresh,
    onLoadMoreData: _onLoadMoreData,
    hasMoreData: _hasMoreData,
    itemBuilder:
    (final BuildContext context, final int index, final item) =>
    ListTile(
    title: Text(item.name),
    ),
),   
      

your onLoadMoreData function that will be called when user scrolls to end of list and offset value will be increment:

    Future<void> _onLoadMoreData() async {
  setState(() {
    showErrorWidget = false;
    showEmptyWidget = false;
    showLoadingWidget = true;
  });
  final response = await Dio()
      .get('https://retoolapi.dev/cXYQ5x/data?_page=$offset&_limit=$limit');

  if (offset == 1) {
    listItems.clear();
  }

  List<PersonViewModel> receivedItems = [];

  receivedItems = (response.data as List)
      .map(
        (final e) => PersonViewModel.fromJson(e as Map<String, dynamic>),
  )
      .toList();

  listItems.addAll(receivedItems);

  setState(() {
    showLoadingWidget = false;
  });
  if (receivedItems.length < limit) {
    _hasMoreData = false;
  }
  offset++;
}    

Define your refresh function that will be called when user pulls list down or when tapes on retry widget:

Future<void> _onRefresh() async {
      listItems.clear();
      offset = 1;
      setState(() {
        showLoadingWidget = true;
        showErrorWidget = false;
        showEmptyWidget = false;
      });
      _onLoadMoreData();
}

Additional information

for more info checkout github repository: https://github.com/aminJamali/advanced-list-view.git