What is the name of the bar menu that youtube, whatapp and other applications use?

To begin with, I suggest reading the official documentation of the android how the implementation works.

If you are looking for a quick and easy implementation, I suggest using the Material Drawer library contained in this link . Just add% to your dependency:

build.gradle

To use add in your Activity :

new DrawerBuilder().withActivity(this).build();

In this way you do not have to create the menu layout and items manually, the library does this for you automatically. The link in the library contains the instructions on how to use it, but as I pointed out at the beginning of the answer, I suggest you visit the official documentation for you to learn how the menu is done.

this flame bar Navigation Drawer