uniapp开发微信小程序使用lottie动画

效果

实现

安装lottie依赖包

npm install lottie-miniprogram

在界面引入依赖包

import lottie from 'lottie-miniprogram';

画布准备

<canvas
  id="Mycanvas"
  ref="canvas"
  type="2d"
  style="width:600rpx;height:400rpx;"
/>

初始化方法

onMounted(() => {
    // 初始化 Lottie 动画
    initLottieAnimation();
  });

const initLottieAnimation = () => {
    uni.createSelectorQuery().select('#Mycanvas').node(res => {
      if (!res || !res.node) {
        console.error('Canvas node not found');
        return;
      }
      
      const canvas = res.node;
      const context = canvas.getContext('2d');
      
      // 获取设备像素比，确保动画清晰度
      const dpr = uni.getSystemInfoSync().pixelRatio || 1;
      canvas.width = 600 * dpr;
      canvas.height = 400 * dpr;
      
      // 缩放canvas上下文以匹配设备像素比
      context.scale(dpr, dpr);
      
      // 设置 Lottie canvas
      lottie.setup(canvas);
      console.log(svgaData)
      try {
        // 加载动画数据
        const lottieRef = lottie.loadAnimation({
          loop: true,
          autoplay: true,
          // 使用本地动画数据文件
          // animationData: svgaData,
          // 或者使用远程 URL
          path: 'https://msd.junongshupin.com/FILES/miniapp/anim/lf20_2BmOqX.json',
          rendererSettings: { 
            context,
          },
        });
        
        // 添加动画事件监听
        lottieRef.addEventListener('complete', () => {
          console.log('Lottie animation completed');
        });
        
        lottieRef.addEventListener('loopComplete', () => {
          console.log('Lottie animation loop completed');
        });

        lottieRef.addEventListener('error', (error) => {
          console.error('Lottie animation error:', error);
        });
        
      } catch (error) {
        console.error('Lottie animation load failed:', error);
      }
    }).exec();
};