MVVM (Model-View-ViewModel) is a design pattern that is commonly used in Android app development. It is a variation of the MVC (Model-View-Controller) pattern and is designed to help developers separate the concerns of the app's user interface from the underlying data and business logic.
The Model represents the data and business logic of the app. It is responsible for handling data operations, such as retrieving and storing information.
The View is the user interface of the app and is responsible for displaying the data to the user. It communicates with the ViewModel to get the data it needs to display.
The ViewModel is an intermediary between the Model and the View. It acts as a link between the two, providing the data that the View needs to display and handling user input. It also implements the app's business logic and communicates with the Model to perform data operations.
MVVM is often used with the Android Data Binding Library, which allows developers to bind the ViewModel's data to the View, eliminating the need for explicit data passing between the ViewModel and the View.
Overall, the MVVM pattern makes it easier to write maintainable, testable, and scalable code for Android apps by separating the concerns of the user interface and data handling.
Top comments (0)