Updated: February 2019.

In Part 1 of this beginner's introduction to Android Studio, you set up Android Studio in your development environment and got to know the user interface. Now, in Part 2, you'll code your first app.

The animated mobile app consists of a single activity, which presents Google's Android robot character and a button for animating the character. Clicking the button causes the character to gradually change color from green to red to blue, then back to green. While the app isn't especially useful, writing it will help you get comfortable with using Android Studio. In Part 3, you'll build and run the app using an Android device emulator and a Kindle Fire tablet.

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