flutter_card_swiper

This is a Flutter package for a Tinder-like card swiper. ✨

It allows you to swipe left, right, up, and down and define your own business logic for each direction.

Very smooth animations supporting Android, iOS, Web & Desktop.

Why?

We built this package because we wanted to:

• Have a fully customizable slider
• Swipe in any direction
• Undo swipes as many times as you want
• Choose your own settings such as duration, angle, padding and more
• Trigger swipes in any direction with the controller
• Add callbacks while swiping, on end, or when the swiper is disabled
• Detect the direction (left, right, top, bottom) the card was swiped

Show Cases

Swipe in any direction	Trigger swipes	Unswipe the cards

Fully customizable

Installation

Add this to your package's pubspec.yaml file:

card_swiper: ...

OR run

flutter pub add flutter_card_swiper

in your project's root directory.

Usage

You can place your CardSwiper inside of a Scaffold like we did here. Optional parameters can be defined to enable different features. See the following example:

import 'package:flutter_card_swiper/flutter_card_swiper.dart';
import 'package:flutter/material.dart';

class Example extends StatelessWidget {
  List<Container> cards = [
    Container(
      alignment: Alignment.center,
      child: const Text('1'),
      color: Colors.blue,
    ),
    Container(
      alignment: Alignment.center,
      child: const Text('2'),
      color: Colors.red,
    ),
    Container(
      alignment: Alignment.center,
      child: const Text('3'),
      color: Colors.purple,
    )
  ];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Flexible(
        child: CardSwiper(
          cardsCount: cards.length,
          cardBuilder: (context, index, percentThresholdX, percentThresholdY) => cards[index],
        ),
      ),
    );
  }
}

Constructor

Basic

Parameter	Default	Description	Required
cardBuilder	-	Widget builder for rendering cards	true
cardsCount	-	Number of cards	true
controller	-	Controller to trigger swipe actions	false
direction	right	Direction in which the card is swiped away when triggered from the controller	false
duration	200 milliseconds	The duration that every animation should last	false
initialIndex	0	Index of the first card when the swiper is initialized	false
isDisabled	false	Set to true if swiping should be disabled, has no impact when triggered from the outside	false
isLoop	true	Set to true if the stack should loop	false
maxAngle	30	Maximum angle that the card can reach during swiping	false
allowedSwipeDirection	AllowedSwipeDirection.all	Sets the direction in which the card can be swiped. It can be set to any combination of left, right up or down.	false
numberOfCardsDisplayed	2	Number of cards displayed at the same time	false
onEnd	-	Callback when there are no more cards left to swipe	false
onSwipe	-	Callback when the user swipes a card. If the function returns false, the swipe action is canceled. If it returns true, the swipe action is performed as expected	false
onTapDisabled	-	Callback when a card is tapped and isDisabled is true	false
onUndo	-	Callback when the controller calls undo. If the function returns false, the undo action is canceled. If it returns true, the undo action is performed as expected	false
padding	EdgeInsets.symmetric(horizontal: 20, vertical: 25)	The padding around the swiper	false
scale	0.9	Scale of the card that is behind the front card	false
threshold	50	Threshold from which the card is swiped away	false
onSwipeDirectionChange	-	A callback containing the horizontal and vertical swipe direction	false

Controller

The Controller is used to swipe the card from outside of the widget. You can create a controller called CardSwiperController and save the instance for further usage. Please have a closer look at our Example for the usage.

Method	Description
swipe	Swipes the card in the selected direction.
swipeLeft	Swipes the card to the left side.
swipeRight	Swipes the card to the right side.
swipeTop	Swipes the card to the top side.
swipeBottom	Swipes the card to the bottom side.
undo	Bring back the last card that was swiped away.

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Credits

• Ricardo Dalarme (Package maintainer)
• Appinio GmbH (Original project creator)