Farting Pig Android app

This application was made as a joke, but it can be used as a learning tool.

NOTE:I have several videos showing you how to code this app.
Layout: https://www.youtube.com/watch?v=8DmrLQvT4OI
Functions:https://www.youtube.com/watch?v=EdWB91NUbOI
Other stuff: https://www.youtube.com/watch?v=pNGNWV6QenQ