Android Developer is a very helpful Android app, which will teach you how to use Android components in no time. It's a very good tool for developers and for people who want to learn how to build their own Android apps. If you're new to programming, it's also a great learning tool. You can also search through hundreds of examples and see the source code for each one of them.

The Android Developer app is very easy to use. You can select any component, and you can view its source code by clicking on the "Source Code" button. You can view the source code of every example in the app. You can also click on the "Run" button to test your app and see how it works.