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.

In Android Studio for beginners, Part 2, you created your first animated mobile app using Android Studio. Now, Part 3 will take you through the steps to build and run the app in an Android device ...

There's also a new version of Jetpack Compose available in beta that's designed to help developers build apps for Google's Android Wear OS platform, including the just-announced Pixel Watch.