1.添加依赖
implementation'com.github.bumptech.glide:glide:4.9.0'
2.加载图片
Glide.with(context).load(list.get(position).getEnvelopePic()).apply(RequestOptions.bitmapTransform(new CircleCrop())).into(holder2.It2_img);
方法 :apply(RequestOptions.bitmapTransform(new CircleCrop()))