flat_list 0.1.1

FlatList widget for Flutter which has similar spec as in React Native's FlatList.

FlatList for Flutter

[FlatList] widget in Flutter which will be familiar to React Native developers.

Motivation

While there are opinionated ways to build listviews in React Native, there are many ways to build listviews in Flutter. In Flutter, we can use ListView, ListView.builder(), SliverList and also when you want to make list with more than one column, you need to use GridView, SliverGrid and so on.

By providing FlatList widget in Flutter, we can move faster on implementing the ListView we want.

Installation

flutter pub add flat_list

Usage

You'll easily understand by looking at below code.

FlatList(
  onEndReached: () async {
    loading.value = true;
    await Future.delayed(const Duration(seconds: 2));
    if (context.mounted) {
      items.value += getMoreData();
      loading.value = false;
    }
  },
  onRefresh: () async {
    await Future.delayed(const Duration(seconds: 2));

    if (context.mounted) {
      items.value = data;
    }
  },
  loading: loading.value,
  listHeaderWidget: const Header(),
  listFooterWidget: const Footer(),
  listEmptyWidget: Container(
    alignment: Alignment.center,
    padding: const EdgeInsets.all(12),
    child: const Text('List is empty!'),
  ),
  data: items.value,
  buildItem: (item, index) {
    var person = items.value[index];

    return ListItemView(person: person);
  },
)

More about the differences in props compared to React Native's FlatList are listed below.

Flutter	React Native	Required
data	data	✓
buildItem	renderItem	✓
listHeaderWidget	ListHeaderComponent
listFooterWidget	ListFooterComponent
listEmptyWidget	ListEmptyComponent
onRefresh	onRefresh
onEndReached	onEndReached
``	refreshing
loading	loading
numColumns	numColumns
onEndReachedDelta	onEndReachedThreshold

Demo

Examples are provided in /example folder.

One column

One column	Multiple Columns

TODO

• Support optional horizontal mode
• Separator support in ListView
• ScrollToIndex support
• Initial number to render
• Initial scroll to index
• Enhance onEndReachedDelta with similar to onEndReachedThreshold
• Support inverted
• Implement methods
  • scrollToEnd
  • scrollToIndex
  • scrollToItem
  • scrollToOffset
• Test coverage

Additional information

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