When I started writing Android apps, I(just like everyone else) used Eclipse. Then Google released Android Studio, a whole new IDE designed for Android development. Things are obviously different from Eclipse. One of my first questions was “How do I import a library into my project?”. It turns out to be very easy!
To import a library click on File > Project structure.
Click on the plus button on the top left. Then choose “Import Existing Project”.
Now select the library directory and enter a name for the module.
And finally select your app on the modules list and hit the plus button. Select “module” and then select the library you want to import!