MVP Vs MVVM in android - Android Architecture Key Differences by AndroidGuruDeva

    

        

    Hi Reader today i'll  be talking about crucial part of App or any type of software development .To develop a robust application which can be grow ,scale easily we need to setup project architecture in proper manner there are many architecture followed by developers today we will talk about differences between two major android architecture that MVP and MVVM so lets talk their differences.

      Here are the key differences between MVP (Model-View-Presenter) and MVVM (Model-View-ViewModel) in Android:

1.Separation of Concerns:

    MVP: Presenter handles the presentation logic and interacts with the View and Model. The View is passive and only displays data provided by the Presenter.

    MVVM: ViewModel manages the data and logic for the View. The View observes ViewModel data through data binding or LiveData, promoting a more reactive approach.

2.Data Binding:

    MVP: Typically does not use Android's Data Binding Library. Interaction between View and Presenter is done through interface methods.

    MVVM: Commonly uses Android's Data Binding Library, allowing the View to bind directly to observable ViewModel properties.

3.Dependency Direction:

    MVP: The View knows about the Presenter via an interface. The Presenter interacts directly with the View and Model.

    MVVM: The ViewModel does not know about the View. The View observes the ViewModel ,which reduces direct dependencies.

4.Handling UI Logic:

    MVP: The Presenter contains UI logic and updates the View directly.

    MVVM: UI logic is placed in the ViewModel, and the View updates automatically through data binding or observable properties.

5.Testability:

    MVP: Easier to test the Presenter independently of the View because the View is typically mocked in unit tests.

    MVVM: Easier to test the ViewModel independently as it contains no reference to the View, focusing solely on logic and data.

6.View's Role:

    MVP: The View is more involved in interacting with the Presenter and handling user input.

    MVVM: The View is more passive and primarily concerned with data binding and UI updates.

7.Complexity:

    MVP: Can become cumbersome with many interface methods for interaction between View and Presenter.

    MVVM: Can simplify code with data binding but might introduce complexity with managing observables and binding expressions.

By understanding these major differences, developers can choose the appropriate pattern based on the requirements and nature of their Android application.

KeyWords

1. Separation of Concerns,
2. Data Binding,
3. Dependency Direction,
4. Testability,
5. Complexity,