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!