The first step of publishing an application to the Play Store is, well, to write the application. See the rest of the book for directions on how to do that. But simply writing code isn’t enough. Your program needs to be of a high quality, free of bugs (yeah right), and compatible with as many devices as possible. Here are a few tips to help you:
Test it on at least one real device before letting anyone else see it. If you forget all the other tips, remember this one.
Keep your program simple, and polish the heck out of it. Make your program do one thing well, rather than a lot of things poorly.
Pick a good Java package name, such as com.yourcompany.prog-name, that you can live with for a long time. Android uses the package name defined ...