下载的文件执行重命名，Android上没问题，iOS上失败

oldPath: wxfile://store_97aa53723a830fe4c5b29ffa1f2ce1fb.png

newPath: wxfile://usr/测试_YM-JF-19082000003.png

{errMsg: “rename:fail permission denied, open wxfile://store_97aa53723a830fe4c5b29ffa1f2ce1fb.png”}