What does the MVP pattern refer to in Android?

The MVP pattern (Model-View-Presenter pattern) is a commonly used software architecture pattern in Android development. Its purpose is to separate the UI (View) of the application from the business logic (Model), while introducing the Presenter as a middle layer to coordinate the interaction between View and Model.

The three main components of the MVP pattern include:

1. Model is responsible for handling business logic and data persistence, such as retrieving data from a database or network.
2. View is responsible for displaying data and interacting with users, such as showing the interface and passing user interactions to the Presenter.
3. The Presenter acts as an intermediary between the View and Model, responsible for handling user interaction events, updating the View, and interacting with the Model for data exchange.

The advantages of the MVP pattern include:

1. Separation of concerns: MVP separates the UI logic from the business logic, making the code more modular and maintainable.
2. Improved testability: Unit testing for the Presenter becomes easier due to the communication between the View and Presenter being done through interfaces.
3. Improve code reusability: By extracting business logic from the View, the same Presenter can be reused by multiple Views, reducing the need to write repetitive code.

It should be noted that the MVP pattern is not an official Android architecture pattern, but rather a design pattern that guides development. In actual development, the appropriate architecture pattern can be chosen based on the project’s requirements and the team’s actual situation.