When creating a Flutter app, we may sometimes need to give the user the option to sort the items in a ListView based on an explicit model. This sortable ListView provides an easy-to-understand way to investigate and sort the information in the app, allowing them to find the data they need more directly and quickly.
introduce:
The demo video below tells the best way to make a sortable ListView in flutter. It shows how a Sortable ListView can function in a Flutter app. It shows when the user can sort the items in the ListView by value from low to high and from high to low by clicking on the price label in the ListView header.
How to implement code in dart file:
You need to implement it in code respectively:
main.dart creates a new dart file called lib inside the folder.
Our demo application has a ListView that displays a list of fiction items with 3 properties: id, name, and Price. Headers also display an up or down bolt symbol, indicating whether the items are sorted in ascending or descending order.
First, we'll create a new HomePage() class. In this lesson, we'll add a sort order. We'll add a bool variable with _sortAscending equal to true.
bool _sortAscending = true;
Now, we'll add a list of products. We'll add strings, a dynamic map of lists, with the variable _products .
final List<Map<String, dynamic>> _products = [