flutter_swiper_view

中文说明

flutter_swiper_view

The best swiper for flutter , with multiple layouts, infinite loop. Compatible with Android & iOS.

:sparkles::sparkles: New Features:PageTransformer

Finally, we have PageTransformer like android, just set a transformer to Swiper, it returns a widget that has been transformed. For now, only support for layout DEFAULT. Thanks to @FlutterRocks ,you've done great job 👏.

:sparkles::sparkles: New Features:Layout

See More

Showcases

See More

Changelogs

see:CHANGELOG.md

Getting Started

• Installation
• Basic Usage
• Constructor
  • Basic
  • Pagination
  • Control buttons
  • Controller
  • Autoplay
• Build in layouts
• Codes

Installation

Add

dependencies:
  flutter_swiper_view: ^1.1.8

to your pubspec.yaml ,and run

flutter pub get 

in your project's root directory.

Basic Usage

Create a new project with command

flutter create myapp

Edit lib/main.dart like this:

import 'package:flutter/material.dart';

import 'package:flutter_swiper_view/flutter_swiper_view.dart';

void main() => runApp(const MyApp());

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

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

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Swiper(
        itemBuilder: (context, index){
          return Image.network("https://via.placeholder.com/350x150",fit: BoxFit.fill,);
        },
        itemCount: 3,
        pagination: const SwiperPagination(),
        control: const SwiperControl(),
      ),
    );
  }
}

Constructor

Basic

Parameter	Default	Description
scrollDirection	Axis.horizontal	If Axis.horizontal, the scroll view's children are arranged horizontally in a row instead of vertically in a column.
loop	true	Set to false to disable continuous loop mode.
index	0	Index number of initial slide.
autoplay	false	Set to true enable auto play mode.
onIndexChanged	void onIndexChanged(int index)	Called with the new index when the user swiped or autoplay
onTap	void onTap(int index)	Called when user tap ui.
duration	300.0	The milliscends of every transaction animation costs
pagination	null	set SwiperPagination() to show default pagination
control	null	set SwiperControl() to show default control buttons

Pagination

The pagination extends from SwiperPlugin,the SwiperPlugin provides extra ui for Swiper.Set SwiperPagination() to show default pagination.

Parameter	Default	Description
alignment	Alignment.bottomCenter	Change this value if you what to put pagination in other place
margin	const EdgeInsets.all(10.0)	The distance between inner side of the parent container.
builder	SwiperPagination.dots	There are three default styles SwiperPagination.dots and SwiperPagination.fraction、 SwiperPagination.rect,both can be customized.

If you'd like to customize your own pagination, you can do like this:

Swiper(
  ...,
  pagination: SwiperCustomPagination(
    builder: (context, config){
      return YourOwnPaginatipon();
    },
  )
);

Control buttons

The control also extends from SwiperPlugin,set SwiperControl() to show default control buttons.

Parameter	Default	Description
iconPrevious	Icons.arrow_back_ios	The icon data to display previous control button
iconNext	Icons.arrow_forward_ios	The icon data to display next.
color	Theme.of(context).primaryColor	Control button color
size	30.0	Control button size
padding	const EdgeInsets.all(5.0)	Control button padding

Controller

The Controller is used to control the index of the Swiper, start or stop autoplay.You can create a controller by SwiperController() and save the instance by futher usage.

Method	Description
void move(int index, {bool animation: true})	Move to the spicified index,with animation or not
void next({bool animation: true})	Move to next
void previous({bool animation: true})	Move to previous
void startAutoplay()	Start autoplay
void stopAutoplay()	Stop autoplay

Autoplay

Parameter	Default	Description
autoplayDelay	3000	Autoplay delay milliseconds.
autoplayDisableOnInteraction	true	If set true, autoplay is disabled when use swipes.

Build in layouts

Swiper(
  itemBuilder: (context, index) {
    return Image.network(
      "https://via.placeholder.com/288x188",
      fit: BoxFit.fill,
    );
  },
  itemCount: 10,
  viewportFraction: 0.8,
  scale: 0.9,
)

Swiper(
  itemBuilder: (context, index) {
    return Image.network(
      "https://via.placeholder.com/288x188",
      fit: BoxFit.fill,
    );
  },
  itemCount: 10,
  itemWidth: 300.0,
  layout: SwiperLayout.STACK,
)

Swiper(
  itemBuilder: (context, index) {
    return Image.network(
      "https://via.placeholder.com/288x188",
      fit: BoxFit.fill,
    );
  },
  itemCount: 10,
  itemWidth: 300.0,
  itemHeight: 400.0,
  layout: SwiperLayout.TINDER,
)

Very easy to create you own custom animation:

Swiper(
  layout: SwiperLayout.CUSTOM,
  customLayoutOption: CustomLayoutOption(startIndex: -1, stateCount: 3)
    ..addRotate([-45.0 / 180, 0.0, 45.0 / 180])
    ..addTranslate([
      const Offset(-370.0, -40.0),
      const Offset(0.0, 0.0),
      const Offset(370.0, -40.0)
    ]),
  itemWidth: 300.0,
  itemHeight: 200.0,
  itemBuilder: (context, index) {
    return Container(
      color: Colors.grey,
      child: Center(
        child: Text("$index"),
      ),
    );
  },
  itemCount: 10,
),

The CustomLayoutOption is designed to describe animations. It is very easy to specify every state of items in Swiper.

CustomLayoutOption(
      startIndex: -1,  /// Which index is the first item of array below      
      stateCount: 3    /// array length 
  )..addRotate([        // rotation of every item 
    -45.0/180,
    0.0,
    45.0/180
  ])..addTranslate([           /// offset of every item
    const Offset(-370.0, -40.0),
    const Offset(0.0, 0.0),
    const Offset(370.0, -40.0)
  ])

Codes

ConstrainedBox(
  constraints: BoxConstraints.loose(Size(screenWidth, 170.0))
  child: Swiper(
    outer: false,
    itemBuilder: (c, i) {
      return Wrap(
        runSpacing:  6.0,
        children: [0,1,2,3,4,5,6,7,8,9].map((i){
          return SizedBox(
            width: MediaQuery.of(context).size.width/5,
            child: Column(
              mainAxisSize: MainAxisSize.min,
              children: <Widget>[
                SizedBox(
                  height: MediaQuery.of(context).size.width * 0.12,
                  width: MediaQuery.of(context).size.width * 0.12,
                  child:  Image.network("https://fuss10.elemecdn.com/c/db/d20d49e5029281b9b73db1c5ec6f9jpeg.jpeg%3FimageMogr/format/webp/thumbnail/!90x90r/gravity/Center/crop/90x90"),
                ),
                Padding(
                  padding: const EdgeInsets.only(top: 6.0),
                  child: Text("$i"),
                )
              ],
            ),
          );
        }).toList(),
      );
    },
    pagination: const SwiperPagination(margin: EdgeInsets.all(5.0)),
    itemCount: 10,
  ),
),

You can find all custom options here:

https://github.com/feicien/flutter_swiper_view/blob/master/example/lib/src/example_custom.dart