Android Architecture Components
In this chapter, you will learn about the key components of the Android Jetpack libraries and what benefits they bring to the standard Android framework. You will also learn how to structure your code and give different responsibilities to your classes with the help of Jetpack components. Finally, you’ll improve the test coverage of your code.
By the end of this chapter, you’ll be able to create applications that handle the lifecycles of activities and fragments with ease. You’ll also know more about how to persist data on an Android device using Room and how to use ViewModels to separate your logic from your Views.
In the previous chapters, you learned how to write unit tests. The question is: what can you unit-test? Can you unit-test activities and fragments? It is hard to unit-test activities and fragments on your machine because of the way they are built. Testing would be easier if you could move the code away from activities...
