carousel_slider

A carousel slider widget.

Features

Infinite scroll
Custom child widgets
Auto play

Supported platforms

Flutter Android
Flutter iOS
Flutter web
Flutter desktop

Live preview

https://serenader2014.github.io/flutter_carousel_slider/#/

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Installation

Add carousel_slider: ^5.1.2 to your pubspec.yaml dependencies. And import it:

dart
import 'package:carousel_slider/carousel_slider.dart';

How to use

Simply create a CarouselSlider widget, and pass the required params:

dart
CarouselSlider(
  options: CarouselOptions(height: 400.0),
  items: [1,2,3,4,5].map((i) {
    return Builder(
      builder: (BuildContext context) {
        return Container(
          width: MediaQuery.of(context).size.width,
          margin: EdgeInsets.symmetric(horizontal: 5.0),
          decoration: BoxDecoration(
            color: Colors.amber
          ),
          child: Text('text $i', style: TextStyle(fontSize: 16.0),)
        );
      },
    );
  }).toList(),
)

Params

dart

CarouselSlider(
   items: items,
   options: CarouselOptions(
      height: 400,
      aspectRatio: 16/9,
      viewportFraction: 0.8,
      initialPage: 0,
      enableInfiniteScroll: true,
      reverse: false,
      autoPlay: true,
      autoPlayInterval: Duration(seconds: 3),
      autoPlayAnimationDuration: Duration(milliseconds: 800),
      autoPlayCurve: Curves.fastOutSlowIn,
      enlargeCenterPage: true,
      enlargeFactor: 0.3,
      onPageChanged: callbackFunction,
      scrollDirection: Axis.horizontal,
   )
 )

Since v2.0.0, you'll need to pass the options to CarouselOptions. For each option's usage you can refer to carousel_options.dart.

If you pass the height parameter, the aspectRatio parameter will be ignored.

Build item widgets on demand

This method will save memory by building items once it becomes necessary. This way they won't be built if they're not currently meant to be visible on screen.
It can be used to build different child item widgets related to content or by item index.

dart

CarouselSlider.builder(
  itemCount: 15,
  itemBuilder: (BuildContext context, int itemIndex, int pageViewIndex) =>
    Container(
      child: Text(itemIndex.toString()),
    ),
)

Carousel controller

In order to manually control the pageview's position, you can create your own CarouselSliderController, and pass it to CarouselSlider. Then you can use the CarouselSliderController instance to manipulate the position.

dart
class CarouselDemo extends StatelessWidget {
  CarouselSliderController buttonCarouselController = CarouselSliderController();

 @override
  Widget build(BuildContext context) => Column(
    children: <Widget>[
      CarouselSlider(
        items: child,
        carouselController: buttonCarouselController,
        options: CarouselOptions(
          autoPlay: false,
          enlargeCenterPage: true,
          viewportFraction: 0.9,
          aspectRatio: 2.0,
          initialPage: 2,
        ),
      ),
      RaisedButton(
        onPressed: () => buttonCarouselController.nextPage(
            duration: Duration(milliseconds: 300), curve: Curves.linear),
        child: Text('→'),
      )
    ]
  );
}