README.md

Lottie for React, React Native, iOS, and Android

Lottie component for React with runtime animation control.

Introduction

Lottie is a library for the Web, Android and iOS that parses Adobe After Effects animations exported as JSON with bodymovin and renders them natively on each platform!

For the first time, designers can create and ship beautiful animations without an engineer painstakingly recreating it by hand.

This library is a react-lottie fork that adds the capability for runtime animation control and fixes lots of bugs.

Getting Started

Get started with Lottie by installing the node module with yarn or npm:

yarn add lottie-react-web

or

npm i --save lottie-react-web

Usage

<Lottie> component can be used in a declarative way:

import React from 'react';
import Lottie from 'lottie-react-web'
import animation from './animation.json'

const App = () => (
  <Lottie
    options={{
      animationData: animation
    }}
  />
)

export default App

By default it will automatically play the animation in loop.

Lottie's animation control can be set via props. Here is an example of a toggle animation that reacts on click:

import React, { Component } from 'react';
import Lottie from 'lottie-react-web'
import toggleAnimation from './toggleAnimation.json'

export default class App extends Component {
  this.state = { isToggled: false }

  render() (
    <div
      onClick={() => {
        this.setState(state => { isToggled: !state.isToggled})
      }}
    >
      <Lottie
        direction={this.state.isToggled ? 1 : -1}
        options={{
          animationData: toggleAnimation,
          loop: false,
        }}
      />
    </div>
  )
)

export default App

API

These are all props available:

Props

Prop	Description	Default
options	Mandatory - The object representing the animation settings that will be instantiated by bodymovin. Defines the source of animation (animationData), loop, autoplay, a few others. See details in the section below.	{ autoplay: true, loop: true }
animationControl	This is where you can change the animation at runtime. A key value pair of a After Effects property path and the a custom value to apply to it. See details below.	—
width	Sets the width of the animation container.	100%
height	Sets the heigth of the animation container.	100%
isStopped	A boolean flag indicating whether or not the animation is stopped.	false
isPaused	A boolean flag indicating whether or not the animation is paused.	false
speed	An integer indicating the speed of the animation ( 1 is 100%.)	1
segments	An array of two integers indicating the beginning and ending frame of the animation	Defaults to play entire animation
forceSegments	A boolean indicating wether the segments should play immediately or sequentially	false
direction	An integer indicating wether the animation progresses in the usual (1) or reverse (-1) direction	1
ariaRole	A string indicating the animation container ariaRole property	"button"
ariaLabel	A string indicating the animation container ariaLabel property	"animation"
title	A string indicating the animation container title property	""

Options object

Defines the animation settings that will be instantiated by bodymovin. Currently a subset of the bodymovin options are supported.

Either the animationData OR path must be specified.

Prop	Description	Default
animationData	Mandatory - The source of the animation.	—
path	Mandatory - The path to the animation.	—
assetsPath	Mandatory - The root path for external assets.	images
loop	Play animation non-stop in a loop.	true
autoplay	Automatically play animation when it is instantiated.	true
renderer	The method for rendering the animation.	svg
rendererSettings	Customize bodymovin aspect ratio configurations.	—

Changing animation at runtime

You can target an specific After Effects layer property and change it at runtime by passing setting a property object on the <Lottie> prop. Example:

import React from 'react';
import Lottie from 'lottie-react-web'
import animation from './animation.json'

const Animation = ({ x, y }) => (
  <Lottie
    options={{
      animationData: animation,
    }}
    animationControl={{
      'Square,Transform,Position': [x, y],
    }}
  />
)

export default Animation

This will override the Position value of the layer JoyStkCtrl01 at runtime.

Lottie is compatible with Joystick 'n Sliders After Effects plugin, so you can create amazing animations easily.