Summary

In this chapter, we explored what an Android app used to look like and all the problems developers would face at the time. We've looked at some of the most important software design principles, such as SOLID, to get a better understanding of how to improve our code and how these principles helped the Android platform evolve. We also looked at the adoption of a new programming language that came with the introduction of new software paradigms, the addition of event-based libraries and frameworks, the introduction of architecture components to help developers write more testable applications, and a new way to build user interfaces. Finally, we introduced clean architecture, which helps us build maintainable, testable, and more independent applications. We looked at all of these changes through a small example, where we saw them transition from what they may have looked like in 2010 to what they may look like now.

In the next chapter, we will deep dive into the libraries that are required for loading, storing, and managing data on Android. We will combine them to build an app using clean architecture.