Every programming language or environment book starts off with the popular “Hello, World!” demonstration. This is just enough of a program to prove you can build things. However, the typical Hello, World! program has no interactivity (e.g., it just dumps the words to a console), and so it’s really boring.
This chapter demonstrates a simple project, but one using Advanced Push-Button Technology and the current time, making it a bit more interesting than the typical Hello, World! demo.
As described in the previous chapter, to work with anything in Android, you need a project. If you are using tools that are not Android-enabled, you can use the
android create project script, found ...