Step by step beginners tutorial - how to make an android calculator using android studio

In the second tutorial of Android Studio tutorials (you can check them here : Android Studio Tutorials) and the programming ones (you can check them here : Programming Tutorials) we're showing you how to make a simple android calculator that can do basic calculations such as addition, subtracting, multiplication and division. I have tried to explain as much as possible that is why the video is +30minutes long and i kinda got tired in the middle of it so haha ! i am sorry for that

before watching this tutorial you need to download and install android studio ( that's an article that shows how : Download And Install Android Studio, and that is a YouTube video how to download and install android studio)

A video to explain the code : 

The used code :