Description of the main principles and rules for building an Android application using Clean Architecture approach
Here you will find description of the main principles and rules, that are worth following in developing Android apps using Clean Architecture approach.
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Clean Architecture is an approach suggested by Robert Martin in 2012.
Clean Architecture includes two main principles:
Let's take a closer look at them.
1. Separating into layers
The main idea of this principle is separating whole app into layers. In general we have three layers:
2.Inversion of Control
According to this principle, domain layer must not depends on outer ones. That is, classes from outer layers must not be used in the domain layer. Interaction with outer layers is implemented through interfaces. Declaration of the interfaces contains in domain layer and their implementation contains in outer ones.
Thanks to separation of concerns between classes we can easily change an application code and add new functional with modifying minimal number of classes. In addition we get testable code. Please note that building the right app architecture depends entirely on a developer experience.
Advantages of Clean Architecture:
Attention: this article assumes knowledge on the following topics:
P. S. I developed an application to demonstrate the use of Clean Architecture in practice. You can find the source code here - Bubbble.