初步使用lottie库_you must set an images folder before loading an im

今天用了一下,给我的感觉,还是值得推荐的,lottie官方文档地址
github地址,做到以下四个发方法,基本就可以使用了
使用lottie的时候,碰到一个错误(You must set an images folder before loading an image)

java.lang.IllegalStateException: 
You must set an images folder before loading an image. Set it with LottieComposition#setImagesFolder or LottieDrawable#setImagesFolder
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导入库

compile 'com.airbnb.android:lottie:2.2.0'
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主要操作

lottieAnimationView.setImageAssetsFolder("images");//设置data.json引用的图片资源文件夹名称,如果没有可不写
lottieAnimationView.setAnimation("data.json");//通过AE生成的图文件(json格式)
lottieAnimationView.loop(true);//设置循环动画
lottieAnimationView.playAnimation();//开始动画
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setImageAssetsFolder方法,进去看源码,就是如果要使用到image资源,需要明确指定assets下的文件夹是哪一个;下边还举了一个例子

  /**
   * If you use image assets, you must explicitly specify the folder in assets/ in which they are
   * located because bodymovin uses the name filenames across all compositions (img_#).
   * Do NOT rename the images themselves.
   *
   * If your images are located in src/main/assets/airbnb_loader/ then call
   * `setImageAssetsFolder("airbnb_loader/");`.
   */
  public void setImageAssetsFolder(String imageAssetsFolder) {
    lottieDrawable.setImagesAssetsFolder(imageAssetsFolder);
  }
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