Basically what I want to accomplish here is to have a horizontal list of categories(could be TabBar) and a vertical list of the categories with items list in each category.
And when you click on a category it should scroll to a position in the vertical list of categories. And when you scroll the vertical list, the active category at the top should also update the current active category.
I've seen this function in the FoodPanda app but I am not able to replicate it.
Any suggestions on how can I accomplish this functionality?
You can copy paste run full code below
You can use package https://pub.dev/packages/scrollable_list_tabview
code snippet
body: ScrollableListTabView(
tabHeight: 48,
bodyAnimationDuration: const Duration(milliseconds: 150),
tabAnimationCurve: Curves.easeOut,
tabAnimationDuration: const Duration(milliseconds: 200),
tabs: [
ScrollableListTab(
tab: ListTab(
label: Text('Vegetables'),
icon: Icon(Icons.group),
showIconOnList: false),
body: ListView.builder(
shrinkWrap: true,
physics: NeverScrollableScrollPhysics(),
itemCount: 10,
itemBuilder: (_, index) => ListTile(
leading: Container(
height: 40,
width: 40,
decoration: BoxDecoration(
shape: BoxShape.circle, color: Colors.grey),
alignment: Alignment.center,
child: Text(index.toString()),
),
title: Text('Vegetables element $index'),
),
)),
ScrollableListTab(
tab: ListTab(label: Text('Fruits'), icon: Icon(Icons.add)),
body: ListView.builder(
shrinkWrap: true,
physics: NeverScrollableScrollPhysics(),
working demo
full code
import 'package:flutter/material.dart';
import 'package:scrollable_list_tabview/scrollable_list_tabview.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
debugShowCheckedModeBanner: false,
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: MyHomePage(title: 'Flutter ScrollableListTabView Example'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: ScrollableListTabView(
tabHeight: 48,
bodyAnimationDuration: const Duration(milliseconds: 150),
tabAnimationCurve: Curves.easeOut,
tabAnimationDuration: const Duration(milliseconds: 200),
tabs: [
ScrollableListTab(
tab: ListTab(
label: Text('Vegetables'),
icon: Icon(Icons.group),
showIconOnList: false),
body: ListView.builder(
shrinkWrap: true,
physics: NeverScrollableScrollPhysics(),
itemCount: 10,
itemBuilder: (_, index) => ListTile(
leading: Container(
height: 40,
width: 40,
decoration: BoxDecoration(
shape: BoxShape.circle, color: Colors.grey),
alignment: Alignment.center,
child: Text(index.toString()),
),
title: Text('Vegetables element $index'),
),
)),
ScrollableListTab(
tab: ListTab(label: Text('Fruits'), icon: Icon(Icons.add)),
body: ListView.builder(
shrinkWrap: true,
physics: NeverScrollableScrollPhysics(),
itemCount: 10,
itemBuilder: (_, index) => ListTile(
leading: Container(
height: 40,
width: 40,
decoration: BoxDecoration(
shape: BoxShape.circle, color: Colors.grey),
alignment: Alignment.center,
child: Text(index.toString()),
),
title: Text('Fruits element $index'),
),
)),
ScrollableListTab(
tab: ListTab(label: Text('Meat'), icon: Icon(Icons.group)),
body: ListView.builder(
shrinkWrap: true,
physics: NeverScrollableScrollPhysics(),
itemCount: 10,
itemBuilder: (_, index) => ListTile(
leading: Container(
height: 40,
width: 40,
decoration: BoxDecoration(
shape: BoxShape.circle, color: Colors.grey),
alignment: Alignment.center,
child: Text(index.toString()),
),
title: Text('Meat element $index'),
),
)),
ScrollableListTab(
tab: ListTab(
label: Text('Herbs&Spices'), icon: Icon(Icons.subject)),
body: GridView.builder(
shrinkWrap: true,
gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
crossAxisCount: 2),
physics: NeverScrollableScrollPhysics(),
itemCount: 10,
itemBuilder: (_, index) => Card(
child: Center(child: Text('Herbs&Spices element $index')),
),
)),
ScrollableListTab(
tab: ListTab(
label: Text('Egg'),
icon: Icon(Icons.subject),
showIconOnList: true),
body: GridView.builder(
shrinkWrap: true,
gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
crossAxisCount: 2),
physics: NeverScrollableScrollPhysics(),
itemCount: 10,
itemBuilder: (_, index) => Card(
child: Center(child: Text('Egg element $index')),
),
)),
],
),
);
}
}