How to create folder in android root folder

[Chi Promoter]

I know that there are similar question like this, but none of the solutions work for me.
I want to create a folder in my root directory like whatsapp but i did not get it to work.
I was able to create a folder in my package folder but same method did not work for root directory

//works for creating folder in my package directory
File pk = new File(this.getExternalFilesDir("/myweb").getAbsolutePath());

pk.mkdir();


//this did not work for creating folder in root directory like whatsapp
File root = new File(Environment.getExternalStorageDirectory() + "/myweb");

root.mkdir();

How can i solve this problem

[Lost User]

See the notes at Environment.getExternalStorageDirectory(); Android Developers[^], it may not be available.

[Andrew Stark]

You can easily create folder in root folder by downloading ES file explorer. Just enable hidden files. You can refer to

mcafee activate

for more information.