Expandable Page View in Flutter

Vandana Sharma

29 September 2023

Introduction

Flutter is a versatile and powerful framework for building cross-platform mobile applications. It provides a wide range of widgets and packages to help developers create rich and interactive user interfaces. In this blog post, we’ll explore how to create expandable page views in Flutter using the Expandable Page View package.

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Expandable Page View

Expandable page view are a popular UI pattern in mobile app development. They allow you to display content in a scrollable view that can be expanded or collapsed with a smooth animation. This is particularly useful when you have content that you want to hide initially to save screen space but make accessible when the user wants to see it.

The Expandable Page View package in Flutter simplifies the implementation of this pattern. It provides a pre-built widget that you can easily integrate into your app to create expandable page views.

Getting Started

To get started with the Expandable Page View package, you’ll need to add it as a dependency in your Flutter project. Open your pubspec.yaml file and add the following line:

dependencies: 
expandable_page_view: ^1.0.0

1 2	dependencies: expandable_page_view: ^1.0.0

Usage

Now that you have the package installed, let’s create a simple example of an expandable page view in Flutter.

Import the package:

import 'package:expandable_page_view/expandable_page_view.dart';

1	import 'package:expandable_page_view/expandable_page_view.dart';

2. Create a list of widgets that you want to display in your expandable page view. These can be any widgets you like, such as text, images, or custom widgets.

List<Widget> pages = [
  Container(
    color: Colors.red,
    child: Center(
      child: Text("Page 1"),
    ),
  ),
  Container(
    color: Colors.green,
    child: Center(
      child: Text("Page 2"),
    ),
  ),
  Container(
    color: Colors.blue,
    child: Center(
      child: Text("Page 3"),
    ),
  ),
];

List<Widget> pages = [

Container(

color: Colors.red,

child: Center(

child: Text("Page 1"),

Container(

color: Colors.green,

child: Center(

child: Text("Page 2"),

Container(

color: Colors.blue,

child: Center(

child: Text("Page 3"),

];

Create an ExpandablePageView widget and pass in the list of pages:

ExpandablePageView(
  children: pages,
  onPageChanged: (index) {
    // Handle page change events here
  },
),

ExpandablePageView(

children: pages,

onPageChanged: (index) {

// Handle page change events here

Customisation

The Expandable Page View package allows you to customize various aspects of the expandable page view, including the animation duration, animation curve, and more. Here’s an example of how to customise the animation duration and curve:

ExpandablePageView(
  children: pages,
  animationDuration: const Duration(milliseconds: 500),
  animationCurve: Curves.easeInOut,
  onPageChanged: (index) {
    // Handle page change events here
  },
),

ExpandablePageView(

children: pages,

animationDuration: const Duration(milliseconds: 500),

animationCurve: Curves.easeInOut,

onPageChanged: (index) {

// Handle page change events here

Conclusion

Creating expandable page views in Flutter using the Expandable Page View package is a straightforward way to enhance your app’s user interface. Whether you want to display additional content or provide a more interactive experience for your users, expandable page views can be a valuable addition to your Flutter app.

The Expandable Page View package simplifies the implementation of this pattern, allowing you to focus on creating engaging content for your users. Give it a try in your next Flutter project, and you’ll see how easy it is to create expandable page views with smooth animations.

For more details and methods you can refer to the official doc of flutter here.

For more interesting blogs check out here – https://mobikul.com/blog/

Thanks for reading.😇