This topic will provide Model‑View‑Presenter (MVP) architecture of Android with various examples.
There are many ways to architect an Android app. But not all of them are testable and allows us to structure our code so that the app is easy to test. The key idea of a testable architecture is separating parts of the application which makes them easier to maintain, extend and test separately from each other.
In an application with a good layered architecture, this model would only be the gateway to the domain layer or business logic. See it as the provider of the data we want to display in the view.
The View, usually implemented by an
Fragment, will contain a reference to the presenter. The only thing that the view will do is to call a method from the Presenter every time there is an interface action.
The Presenter is responsible to act as the middle man between View and Model. It retrieves data from the Model and returns it formatted to the View. But unlike the typical MVC, it also decides what happens when you interact with the View.
* Definitions from Antonio Leiva’s article.
Recommended App Structure (not required)
The app should be structured by package per feature. This improves readability and modularizes the app in a way that parts of it can be changed independently from each other. Each key feature of the app is in its own Java package.