menu_inline_filter

Description:

menu inline filter

menu_inline_filter #
Animated menu inline filter.
Developed by Kevin Mendez
Designed by Daniel Enqvist

Getting Started #
This project is a starting point for a Dart
package,
a library module containing code that can be shared easily across
multiple Flutter or Dart projects.
For help getting started with Flutter, view our
online documentation, which offers tutorials,
samples, guidance on mobile development, and a full API reference.
Example Project #
There is a example project in the example folder. Check it out. Otherwise, keep reading to get up and running.
Usage #
Need to include the import the package to the dart file where it will be used, use the below command,
import 'package:menu_inline_filter/menu_inline_filter.dart';
copied to clipboard
MenuInlineFilter #
import 'package:flutter/material.dart';
import 'package:menu_inline_filter/menu_inline_filter.dart';
import 'data.dart';

void main() {
runApp(MyApp());
}

class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Menu Inline Filter example',
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}

class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);

final String title;

@override
_MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
//list of categories
List<String> _mainCategories = ['category1', 'category2', 'category3'];
//list of subcategories
List<List<String>> _subcategories = [
['subcategory1.1', 'subcategory1.2', 'subcategory1.3'],
['subcategory2.1', 'subcategory2.2', 'subcategory3.3'],
['subcategory3.1', 'subcategory3.2', 'subcategory3.3'],
];

//your data of items that contains category and subcategory properties
List<Item> items = itemsData;

List<Item> _filteredItems;
String _currentCategory;
String _currentSubCategory;

@override
void initState() {
super.initState();
_currentCategory = _mainCategories[0];
_currentSubCategory = _subcategories[0][0];
_filteredItems = _filterItemsCategory(_currentCategory);
}

//change of state based on category selection
void _updateCategory(value) {
setState(() {
_currentCategory = value;
//filter items based on category
_filteredItems = _filterItemsCategory(value);
});
}

//change of state based on sub category selection
void _updateSubCategory(value) {
setState(() {
_currentSubCategory = value;
//filter items based on subcategory
_filteredItems = _filterItemsSubCategory(_currentSubCategory);
});
}
//filter list of items by category
List<Item> _filterItemsCategory(String category) {
return items.where((element) => element.category == category).toList();
}
//filter list of items by subcategory
List<Item> _filterItemsSubCategory(String subcategory) {
return items
.where((element) => element.subcategory == subcategory)
.toList();
}

@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Padding(
padding: const EdgeInsets.only(top: 15),
child: Column(
// mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
MenuInlineFilter(
animationDuration: 500,
//callback run after selecting a category
updateCategory: _updateCategory,
//callback run after selecting a subcategory
updateSubCategory: _updateSubCategory,
//list of Strings with main categories
categories: _mainCategories,
//list of of list of Strings with subcategories
subcategories: _subcategories,
),
//
Expanded(
child: ListView(
children: _filteredItems
.map((e) => ListTile(title: Text(e.name)))
.toList(),
),
)
],
),
),
);
}
}

class Item {
final String name;
final String category;
final String subcategory;
Item({
@required this.name,
@required this.category,
@required this.subcategory,
});
}

copied to clipboard