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lottie-miniprogram-modern

v1.0.0

Published

lottie for miniprogram

Readme

lottie-miniprogram-modern

lottie 动画库适配小程序的版本,基于官方库进一步封装,用法和官方一致。

因官方库已经800年不维护更新了,UI给的较新版本的lottie json 动画文件使用该库已无法正常显示,故做了以下升级:

  • 使用当前最新版本的 lottie 库,广泛支持更多版本的 lottie json 动画文件

    • 截止到2025年3月,最新版本为2.12.2
  • 精简项目,直接使用js文件,不再依赖lottie-web包,js文件从bodymovin libraries获取,想用哪个用哪个。

  • 使用Rollup打包,支持 esm 和 cjs 两种模块化方式

  • 内置Taro版本的组件,参考 examples/taro/LottieAnim

lottie 的相关介绍与动画生成方法等请参考官方说明

依赖小程序基础库版本 >= 2.8.0 的环境

选择库文件时,请选择 lottie_canvas.js 文件 或 lottie_canvas.min.js 文件,因为小程序使用canvas来绘制lottie动画

使用

可参考该代码片段:https://developers.weixin.qq.com/s/2TYvm9mJ75bF。大致步骤如下:

  1. 通过 npm 安装:
npm install --save lottie-miniprogram-modern
  1. 传入 canvas 对象用于适配
<canvas id="canvas" type="2d"></canvas>
import lottie from 'lottie-miniprogram-modern'

Page({
  onReady() {
    this.createSelectorQuery().select('#canvas').node(res => {
      const canvas = res.node
      lottie.setup(canvas)
    }).exec()
  }
})
  1. 使用 lottie 接口
lottie.setup(canvas)
this.ani = lottie.loadAnimation({
  ...
})
this.ani.destroy() // 页面退出需销毁

接口

目前提供两个接口:

lottie.setup(canvas)

需要在任何 lottie 接口调用之前调用,传入 canvas 对象

lottie.loadAnimation(options)

与原来的 loadAnimation 有些不同,支持的参数有:

  • loop
  • autoplay
  • animationData
  • path (只支持网络地址)
  • rendererSettings.context (必填)

说明

  • 由于小程序本身不支持动态执行脚本,因此 lottie 的 expression 功能也是不支持的。

开发

npm install
npm run build