app/src/main/java/safeluck/drive/evaluation/util/FileUtil.java
@@ -193,6 +193,36 @@
            OutputStream outputStream = new FileOutputStream(  new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/"+context.getPackageName(), assertfileName));
            byte[] bytes = new byte[1024];
            int len = 0;
            while ((len =inputStream.read(bytes))>0){
                outputStream.write(bytes,0,len);
            }
            outputStream.close();
            inputStream.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    /**
     * 拷贝assert目录下的文件到 安装包目录下
     * @param context
     * @param assertfileName
     */
    public static void copyAssertFileToCache(Context context,String assertfileName){
        try {
            InputStream inputStream = null;
            try {
                inputStream = context.getAssets()
                        .open(assertfileName);
            } catch (IOException e) {
                e.printStackTrace();
            }
//            deleteFile(context.getPackageName()+"/",assertfileName);
            OutputStream outputStream = new FileOutputStream(  new File(context.getFilesDir(), assertfileName));
//            OutputStream outputStream = context.openFileOutput(assertfileName,Context.MODE_PRIVATE+Context.MODE_WORLD_WRITEABLE);
            byte[] bytes = new byte[1024];
            while ((inputStream.read(bytes))>0){
                outputStream.write(bytes);
            }