This is a complete tutorial, discussing how to build a simple calculator app for Android. Check it out, and implement some of the recommended improvements.

Android Studio makes things very easy. As soon as you create a new project, it will be populated with the very basic code and setup necessary to print “Hello World” to the screen.

Developers at UNO Platform detailed just how complicated a calculator can be, having just open sourced the Uno Calculator, a port of the previously open sourced Windows Calculator, which now runs on ...