Enhance Your Flutter App with Grouped Lists

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Enhance Your Flutter App with Grouped Lists

Harness the power of grouped_list, a remarkable Flutter package that enables the creation of ListView widgets with elegantly grouped list items. This comprehensive guide will guide you through its features, parameters, and essential usage.

Getting Started with Simplicity

  1. Add the dependency: Enhance your pubspec.yaml with the following line: 
    grouped_list: ^5.1.2
  2. Import the library: 
    import 'package:grouped_list/grouped_list.dart';

Core Functionality: GroupedListView

Replace the conventional ListView with GroupedListView, the heart of grouped lists. Here's an example:

GroupedListView(
  elements: _elements,
  groupBy: (element) => element['group'],
  groupSeparatorBuilder: (String groupByValue) => Text(groupByValue),
  itemBuilder: (context, dynamic element) => Text(element['name']),
  itemComparator: (item1, item2) => item1['name'].compareTo(item2['name']),
  useStickyGroupSeparators: true,
  floatingHeader: true,
  order: GroupedListOrder.ASC,
)

Parameters: A Comprehensive Overview

Parameter Description Required Default
elements List of data to display Yes -
groupBy Function mapping elements to their grouped value Yes -
itemBuilder Function defining item widgets Yes -
groupSeparatorBuilder Function defining group headers Yes -
useStickyGroupSeparators Sticky group headers No false
floatingHeader Floating sticky headers No false
stickyHeaderBackgroundColor Background color of sticky headers No Color(0xffF7F7F7)
separator Separator widget between items No No separator
groupComparator Custom group sorting function No -
itemComparator Custom item sorting function No -
order Group sorting order (ASC/DESC) No GroupedListOrder.ASC

Additional Features:

  • ListView Parameters: Utilize most ListView parameters for further customization.
  • SilverGroupedListView: Support for grouped lists based on SilverList.
  • Chat Dialogs: Effortlessly create chat-like dialogs by leveraging reverse and GroupedListOrder.DESC.

Conclusion

grouped_list empowers Flutter developers with a versatile solution for creating visually appealing and structured lists. Whether for chat dialogs or complex data organization, this package streamlines the development process. Embrace the power of grouped lists and enhance your Flutter applications today!

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