Interface of a Directory

Hello how do i do this kind of interface on MIT App Inventor?

when you click on the circled button, it can shows the directory.

You can use Buttons to change Screens, or a Spinner or a ListView and other things.

What have you tried?

Here are some resources to help you learn to use the AI2 tools. A very good way to learn App Inventor is to read the free Inventor's Manual here in the AI2 free online eBook ... the links are at the bottom of the Web page. The book 'teaches' users how to program with AI2 blocks.

There is a free programming course here and the aia files for the projects in the book are here:

How to do a lot of basic things with App Inventor are described here: .

Also look here and here for more tutorials.

Learn about components
and visit the Library Help>Library on the MENU

thank you !!!