z_grouped_list 1.0.5

A custom list that separates data into groups with specific index.

A custom list that separates your list of data into groups with seperators!

Features

Supports ListViews and GridViews

Usage

Important!!! do not forget to wrap your code with an Expanded or a SizedBox.

Simple List implementation:

ZGroupedList(
              // your items list
              items: books,
              // What element should you sort by?
              sortBy: (item){
                int year = item['year'];
                return year;
              },
              // Item widget
              itemBuilder: (context, item){
                String? name = item['name'];
                return Text(name ?? "empty");
              },
              // Group separator widget
              groupSeparatorBuilder: (year) {
                return Text(year.toString(),);
              }, ),

Grid List implementation:

ZGroupedList.grid(
              // Show 3 items horizontally
              crossAxisCount: 3,

              // All items list
              items: books,
              // What element should you sort by?
              sortBy: (item){
                int year = item['year'];
                return year;
              },
              // Item widget
              itemBuilder: (context, item){
                String? name = item['name'];
                return Text(name ?? "empty");
              },
              // Group separator widget
              groupSeparatorBuilder: (year) {
                return Text(year.toString(),);
              },

              // Custom grid delegate (optional)
              gridDelegate: const SliverGridDelegateWithMaxCrossAxisExtent(
                  maxCrossAxisExtent: 80,
                  childAspectRatio: 5 / 9,
                  crossAxisSpacing: 25,
                  mainAxisSpacing: 15),
            ),

Parameters

Normal List:

Name	Description	Required	Default value
items	A list of the data you want to display in the list	required	-
sortBy	Function which maps an element to its grouped value	required	-
itemBuilder	Function that let you build the item widget	required	-
groupSeparatorBuilder	Function that let you build the group separator widget	required	-
descendingOrder	Is your data organized in a decending order	no	true

Extra for Grid List:

Name	Description	Required	Default value
crossAxisCount	how many items horizontally in a grid	no	1
gridDelegate	pass in a custom gridDelegate	no	-