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taobao-lottie-cloudfile-fix

v0.0.3

Published

lottie 动画库适配淘宝小程序的版本。

Downloads

8

Readme

lottie

lottie 动画库适配小程序的版本。

lottie 的相关介绍与动画生成方法等请参考 官方说明 依赖手淘版本 >= 9.7.0 的环境

使用

可参考该代码片段,大致步骤如下:

  1. 通过 npm 安装:
npm install --save taobao-lottie-cloudfile-fix
  1. 传入 canvas 对象用于适配
<canvas id="canvas"  type="2d" onReady="onCanvasReady" style="width: 300px; height: 500px"></canvas>
import lottie from "taobao-lottie-cloudfile-fix";
import animationData from "../../json/catrim"; // 实际文件路径

Page({
  onReady() {},
  onCanvasReady() {
    this.canvas = my.createCanvas({
      id: "canvas",
      success: (canvas) => {
        ar systemInfo = my.getSystemInfoSync();
        canvas.width = 300 * systemInfo.pixelRatio;
        canvas.height = 500 * systemInfo.pixelRatio;
        this.canvas = canvas;
        console.log("canvas=====", canvas);
        lottie.setup(canvas);
        this.ani = lottie.loadAnimation({
          loop: true,
          autoplay: true,
          // path:'https://gw.alipayobjects.com/os/lottie-asset/coupon-tip/data.json/data-80154.json',
          animationData,
          rendererSettings: {
            context: canvas.getContext("2d"),
          },
        });
      },
    });
  },
  play() {
    this.ani.play();
  },
  pause() {
    this.ani.pause();
  },
});
  1. 使用 lottie 接口
lottie.setup(canvas)
lottie.loadAnimation({
  ...
})

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

  • 本项目是以 npm 的方式依赖原 lottie-web 项目,若原项目有新版本,可直接改变依赖的版本号。
  • 本项目依赖手淘  9.7.0 里性能更好的 canvas 实现,由于还有些小问题没有正式开放,但目前用在此处暂无发现问题。
  • 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。
  • 本项目基于@tbminiapp/lottie-miniapp, 与原项目保持一致,只是修复一些影响使用的问题

修复

  • 修复淘宝小程序不能使用云存储json文件的问题
  • 修复淘宝小部件环境下报错导致不能使用的问题