Searchable ListView

An easy-to-use Flutter widget for adding a searchable, sortable, and paginated list UI. Supports synchronous lists, asynchronous data sources, expansion groups, slivers, pull-to-refresh, and many customization options.

Package: searchable_listview

Features

• Filter lists on edit or submit
• Support for async data sources and async filtering
• Expansion-group lists with searchable group contents
• Optional sort widget and custom sort predicate
• Pagination and onPaginate callback
• Pull-to-refresh support
• Sliver-based scrolling effect
• Customizable loading / error / empty widgets
• Customizable search field (decoration, input type, icons, width/height)
• Auto-complete hints and secondary widgets next to the search field

Installation

Add the package to your pubspec.yaml:

dependencies:
  searchable_listview: ^2.19.4

Then run:

flutter pub get

Quick Start

Basic synchronous list example:

SearchableList<Actor>(
  initialList: actors,
  itemBuilder: (actor) => ActorItem(actor: actor),
  filter: (query) => actors
      .where((a) => a.name.toLowerCase().contains(query.toLowerCase()))
      .toList(),
  emptyWidget: const Center(child: Text('No results')),
  inputDecoration: InputDecoration(labelText: 'Search actor'),
)

Async list example

Use the .async constructor when data comes from a Future and you need to filter the returned list:

SearchableList<Actor>.async(
  asyncListCallback: () async => await fetchActors(),
  asyncListFilter: (query, list) =>
      list.where((a) => a.name.contains(query)).toList(),
  itemBuilder: (actor) => ActorItem(actor: actor),
  loadingWidget: const Center(child: CircularProgressIndicator()),
  errorWidget: const Center(child: Icon(Icons.error)),
)

Expansion groups

For grouped/expansion lists use the .expansion constructor:

SearchableList<Actor>.expansion(
  expansionListData: mapOfActors,
  expansionTitleBuilder: (key) => Text(key.toString()),
  filterExpansionData: (query) => {
    for (final entry in mapOfActors.entries)
      entry.key: (mapOfActors[entry.key] ?? [])
          .where((a) => a.name.contains(query))
          .toList()
  },
  expansionListBuilder: (index, actor) => ActorItem(actor: actor),
)

Sliver list

Use .sliver to embed a searchable list inside sliver scroll views:

SearchableList<Actor>.sliver(
  initialList: actors,
  itemBuilder: (actor) => ActorItem(actor: actor),
  filter: (q) => actors.where((a) => a.name.contains(q)).toList(),
)

Common Parameters

• initialList — initial synchronous list of items
• filter — synchronous filter callback (String -> List
• asyncListCallback — Future that returns a List
• asyncListFilter — filter that applies to results from asyncListCallback
• itemBuilder — builder for list item widgets
• emptyWidget, loadingWidget, errorWidget — custom widgets for states
• onPaginate — callback when list reaches the end (for pagination)
• inputDecoration, textStyle, textInputType — search field customization
• sortWidget, sortPredicate — optional sorting UI and comparator
• closeKeyboardWhenScrolling — whether scrolling hides the keyboard

For a complete list of available parameters and detailed API, see the library documentation or the source code in lib/searchable_listview.dart.

Example App

See the example/ folder for a runnable demo with multiple configurations and screenshots.

Contributing

Contributions, issues and feature requests are welcome. Feel free to check the example/ folder for usage examples and open a pull request.

• Report bugs by opening an issue
• Suggest features by opening an issue
• Submit pull requests for fixes and improvements

Repository: github.com/koukibadr/Searchable-Listview

License

This project is licensed under the terms in the LICENSE file.

Authors