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Description:

scrollable list tabview

scrollable_list_tabview #

A Flutter widget which synchronize a ScrollView and a custom tab view.
The main idea is to create a custom tab view synchronizing with inner ScrollView. The scroll activity will trigger custom tab view at the top to follow the index of the inner scroll view widget.

Installation #
Add dependency for package on your pubspec.yaml:
dependencies:
scrollable_list_tabview: <latest>
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Usage #
To use this widget we must first define how our tabs will look like.
ListTab #

Parameter
Definition

Widget icon
Trailing widget for a tab, typically an Icon.

Widget label
Label to be shown in the tab, must be non-null.

BorderRadiusGeometry borderRadius
BorderRadius value for a single tab.

Color activeBackgroundColor
Color to be used when the tab is selected.

Color inactiveBackgroundColor
Color to be used when the tab isn't selected.

bool showIconInList
Decide whether show icon widget in the scrollable view.

Color borderColor
Color of the border of tab when its not selected

Then we can use LisTab in ScrollableListTab.
ScrollableListTab #

Parameter
Definition

ListTab tab
Data model used for rendering tab widgets.

ScrollView body
An individual inner scrollable widget.

Then ScrollableListTabView will take a list of ScrollableListTab as an argument.
ScrollableListTabView #

Parameter
Definition

List<ScrollableListTab> tabs
List of tabs to be built.

double height
Height of the tab at the top of the view.

Duration tabAnimationDuration
Duration of tab change animation.

Duration bodyAnimationDuration
Duration of inner scroll view animation.

Curve tabAnimationCurve
Animation curve used when animating tab change.

Curve bodyAnimationCurve
Animation curve used when changing index of inner ScrollView(s).

Example #
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,
tabs: [
ScrollableListTab(
tab: ListTab(label: Text('Label 1'), 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('List element $index'),
),
)),
],
),
);
}
}
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Limitations & Considerations #
There are some limitations on this package. For example we only support ScrollView to be the body. Also, we could have used builder pattern to build the widgets.
I would like to thank Google developers for creating awesome package called ScrollablePositionedList.
Contribution #
Contributions are accepted via pull requests. For more information about how to contribute to this package, please check the contribution guide.
License #
This project is licensed under the MIT license, additional knowledge about the license can be found here.