How to hide folder in android mobile

1.First of all Now open your file manager. For this tutorial, I’m using the default file manager
2.Next go to your file manager settings and look for the term, Show Hidden Files/Folders. And 

enable/mark it as shown in the figure below. Then save your settings.
3.Now rename the existing folder
(you want to hide or create a new one)
exm… (image.) While renaming the folder name last just add an extra dot (.) right before all the characters. And save it understanding.