Top 40 MVVM Interview Questions and Answers

MVVM stands for Model-View-ViewModel. It is a design pattern used in software engineering.

• MVVM separates the user interface from the business logic

• Model represents the data and business logic

• View represents the user interface

• ViewModel acts as a mediator between the Model and View

• Types of MVVM include Classic MVVM, Prism MVVM, and ReactiveUI MVVM

MVVM is a design pattern that separates UI logic from business logic.

• Model represents the data and business logic

• View displays the UI and user interactions

• ViewModel acts as a mediator between Model and View

• ViewModel exposes data and commands to the View

• View binds to ViewModel properties and commands

• Changes in ViewModel update the View and vice versa

MVVM stands for Model-View-ViewModel. It is a design pattern used in software engineering.

• MVVM separates the UI logic from the business logic of an application.

• It provides better testability and maintainability than MVC.

• ViewModel acts as a mediator between the View and Model.

• Data binding is a key feature of MVVM.

• MVVM is widely used in Android app development.

MVVM focuses on data binding and separation of concerns, while MVP focuses on the separation of concerns between the view and the presenter.

• MVVM stands for Model-View-ViewModel, where the ViewModel acts as an intermediary between the view and the model.

• MVVM uses data binding to automatically update the view when the ViewModel changes.

• MVP stands for Model-View-Presenter, where the presenter acts as an intermediary between the view and the model.

• MVP requires the view to have a ...read more

MVVM is an architectural design pattern that separates the UI from the business logic. Data binding is a way to establish a connection between the UI and the data model.

• MVVM stands for Model-View-ViewModel.

• Model represents the data and business logic, View represents the UI, and ViewModel acts as a mediator between the Model and View.

• Data binding is a technique that establishes a connection between the UI components and the data model, allowing automatic updates when the data...read more

MVVM (Model-View-ViewModel) is a design pattern used in Swift to separate the user interface logic from the business logic.

• MVVM divides the code into three main components: Model, View, and ViewModel.

• Model represents the data and business logic of the application.

• View displays the data and interacts with the user.

• ViewModel acts as a mediator between the Model and View, handling the logic for the View.

• MVVM helps in making the code more modular, testable, and maintainable.

MVVM is a software architecture pattern that separates the user interface from the business logic.

• MVVM stands for Model-View-ViewModel.

• Model represents the data and business logic.

• View represents the user interface.

• ViewModel acts as a mediator between the View and Model.

• Advantages include easier testing, separation of concerns, and improved maintainability.

• Example: Xamarin.Forms uses MVVM architecture for cross-platform mobile app development.

MVVM is a design pattern that separates UI from business logic. LiveData is a data holder class that is lifecycle-aware.

• MVVM stands for Model-View-ViewModel

• Model represents the data and business logic

• View represents the UI

• ViewModel acts as a mediator between Model and View

• LiveData is an observable data holder class

• LiveData is lifecycle-aware and only updates the UI when the app is in the foreground

• LiveData automatically manages the lifecycle of the data

• LiveData can be used to...read more

MVVM is a design pattern that separates the user interface from the business logic and data access layers.

• Model represents the data and business logic

• View displays the user interface elements

• ViewModel acts as an intermediary between the Model and View, handling user interactions and updating the Model

MVVM stands for Model-View-ViewModel, a design pattern that separates the UI from the business logic.

• MVVM separates the UI (View) from the business logic (ViewModel) using a data-binding mechanism.

• ViewModel retains data during configuration changes, ensuring that data is not lost when the device is rotated or the app is put in the background.

• ViewModel survives configuration changes by being retained by the system, while the View is recreated.

MVVM is a design pattern that separates the UI, business logic, and data layers, promoting better code organization and testability.

• MVVM stands for Model-View-ViewModel, where the ViewModel acts as an intermediary between the View and the Model.

• MVVM promotes data binding, making it easier to keep the UI in sync with the underlying data.

• Other architectures like MVC (Model-View-Controller) and MVP (Model-View-Presenter) have different ways of handling the separation of concerns...read more

MVI focuses on unidirectional data flow and state management, while MVVM separates the UI logic from the business logic.

• MVI stands for Model-View-Intent and emphasizes a single direction of data flow.

• MVVM stands for Model-View-ViewModel and separates the UI logic from the business logic.

• MVI is more predictable and easier to test due to its unidirectional data flow.

• MVVM is widely used in Android development and provides a clear separation of concerns.

• MVI is gaining popularity ...read more

Yes, I have worked on MVVM architecture pattern.

• MVVM stands for Model-View-ViewModel.

• It separates the UI logic from the business logic.

• ViewModel acts as a mediator between Model and View.

• Data binding is a key feature of MVVM.

• I have implemented MVVM in my previous Android projects using Android Architecture Components such as LiveData and ViewModel.

MVVM is a design pattern that separates the user interface from the business logic and data model.

• MVVM stands for Model-View-ViewModel

• Model represents the data and business logic

• View represents the UI components

• ViewModel acts as an intermediary between the Model and View

• ViewModel exposes data and commands to the View

MVVM focuses on separation of concerns by introducing a ViewModel layer, while MVC combines the responsibilities of the Model and Controller.

• MVC stands for Model-View-Controller, where the Model represents the data, the View displays the data, and the Controller handles user input and updates the Model.

• MVVM stands for Model-View-ViewModel, where the ViewModel acts as an intermediary between the View and the Model, handling user input and updating the Model.

• In MVVM, the View i...read more

Both MVVM and MVP are architectural patterns used in software development, each with its own advantages and use cases.

• MVVM (Model-View-ViewModel) is better for data binding and two-way communication between view and view model.

• MVP (Model-View-Presenter) is better for unit testing and separation of concerns.

• MVVM is commonly used in frameworks like Angular and Knockout.js, while MVP is popular in Android development with libraries like Moxy.

MVVM is an architectural pattern that separates the user interface from the business logic by using a data-binding approach.

• MVVM stands for Model-View-ViewModel

• Model represents the data and business logic

• View represents the user interface

• ViewModel acts as a mediator between the Model and View

• Data-binding is used to automatically update the View when the Model changes

• MVVM promotes separation of concerns and testability

MVVM is a design pattern that separates the UI from the business logic by introducing a middle layer called ViewModel.

• Model-View-ViewModel design pattern

• ViewModel acts as a link between the Model and View

• Data binding is used to connect the ViewModel to the View

• Updates in the ViewModel automatically reflect in the View

MVVM is a design pattern that separates the user interface from the business logic and data model.

• Model - Represents the data and business logic

• View - Represents the UI components

• ViewModel - Acts as a mediator between the Model and View, handling user interactions and updating the Model

MVVM is a design pattern that separates the UI, business logic, and data layers in an Android app.

• MVVM stands for Model-View-ViewModel.

• Model represents the data and business logic.

• View is the UI component that displays the data.

• ViewModel acts as a mediator between the Model and View, handling user interactions and updating the UI.

• Data binding is often used to connect the ViewModel with the View in MVVM.

• Example: In an Android app, a ViewModel would fetch data from a repository...read more

MVVM focuses on separation of concerns between UI, business logic, and data layers, while MVC separates application into model, view, and controller.

• MVVM stands for Model-View-ViewModel, where ViewModel acts as a mediator between View and Model.

• MVVM is commonly used in WPF and Xamarin applications.

• MVC stands for Model-View-Controller, where Controller handles user input, Model manages data, and View displays information.

• MVC is commonly used in web development frameworks like ...read more

MVVM focuses on data binding and reactive programming, while MVP separates concerns with a passive view.

• MVVM stands for Model-View-ViewModel, where the ViewModel exposes methods and properties to bind data to the view.

• MVVM uses data binding to automatically update the UI when the underlying data changes.

• MVP stands for Model-View-Presenter, where the Presenter acts as an intermediary between the Model and the View.

• MVP separates concerns by having a passive view that only displ...read more

MVVM architecture is a software design pattern that separates the user interface from the business logic.

• MVVM stands for Model-View-ViewModel

• Model represents the data and business logic

• View represents the user interface

• ViewModel acts as a mediator between the Model and View

• ViewModel exposes data and commands to the View

• Data binding is used to keep the View and ViewModel in sync

• Example frameworks that support MVVM: Angular, React, Xamarin

MVVM is a design pattern that separates the user interface from the business logic and data model.

• MVVM stands for Model-View-ViewModel

• Model represents the data and business logic

• View represents the user interface

• ViewModel acts as an intermediary between the Model and View

• MVVM helps in achieving separation of concerns and easier unit testing

MVVM is a software architectural pattern that separates the user interface from the business logic and data.

• MVVM stands for Model-View-ViewModel

• Model represents the data and business logic

• View represents the user interface

• ViewModel acts as a mediator between the Model and View

• ViewModel exposes data and commands to the View

• MVVM promotes separation of concerns and testability

• Example: Using MVVM in a mobile app, the ViewModel would handle data retrieval and manipulation, while t...read more

MVC is suitable for small to medium-sized projects with simpler UI logic, while MVVM is ideal for larger projects with complex UI logic.

• Use MVC for projects with simpler UI logic and fewer components

• Use MVVM for projects with complex UI logic and a large number of components

• MVC separates concerns into Model, View, and Controller

• MVVM separates concerns into Model, View, and ViewModel

• MVVM is often used in mobile app development due to its data-binding capabilities

MVVM is an architectural pattern used in software development, particularly in Android apps, to separate the user interface from the business logic.

• MVVM stands for Model-View-ViewModel

• Model represents the data and business logic

• View is the UI component that displays the data and interacts with the user

• ViewModel acts as a mediator between the Model and View, handling user interactions and updating the Model

• MVVM helps in separating concerns, making code more modular and easier ...read more

MVVM (Model-View-ViewModel) is a design pattern that separates the user interface from the business logic and data model.

• MVVM consists of three main components: Model, View, and ViewModel.

• The Model represents the data and business logic, the View represents the UI components, and the ViewModel acts as a mediator between the Model and View.

• MVVM helps in achieving separation of concerns, making code more modular and easier to maintain.

• Data binding is a key feature of MVVM, wher...read more

MVVM focuses on separation of concerns, with ViewModel acting as a mediator between Model and View. MVC has tighter coupling between Model, View, and Controller.

• MVVM separates concerns by introducing a ViewModel layer to handle presentation logic.

• MVC has a tighter coupling between Model, View, and Controller, leading to potential code duplication and difficulty in testing.

• In MVVM, the ViewModel exposes data and actions to the View through data binding, reducing the need for c...read more

MVVM is a design pattern that separates the UI logic from the business logic in an application.

• Model: Represents the data and business logic of the application

• View: Represents the UI components of the application

• ViewModel: Acts as a mediator between the Model and View, handling the UI logic and data binding

• Encourages separation of concerns and easier unit testing

MVVM is a design pattern that separates the UI from the business logic, promoting code reusability and maintainability.

• MVVM stands for Model-View-ViewModel

• Model represents the data and business logic

• View is the UI components that the user interacts with

• ViewModel acts as a mediator between the Model and View, handling user inputs and updating the Model

• Design patterns are reusable solutions to common problems in software design

• Examples of design patterns include Singleton, Fact...read more

MVC focuses on separating the application into Model, View, and Controller components, while MVVM adds a ViewModel layer to handle data and logic.

• MVC stands for Model-View-Controller, where the Model represents the data, the View represents the UI, and the Controller handles user input.

• MVVM stands for Model-View-ViewModel, where the ViewModel acts as an intermediary between the View and Model, handling data and logic.

• In MVC, the View directly interacts with the Model, while i...read more

MVVM stands for Model-View-ViewModel, a design pattern used in software development to separate the user interface from the business logic.

• MVVM separates the user interface (View) from the business logic (ViewModel) by introducing a middle layer called ViewModel.

• Model represents the data and business logic of the application.

• View is responsible for displaying the data and forwarding user input to the ViewModel.

• ViewModel interacts with the Model and prepares data to be display...read more

MVVM is a design pattern that separates UI code from business logic using a ViewModel.

• MVVM stands for Model-View-ViewModel

• Model represents the data and business logic

• View represents the UI

• ViewModel acts as a mediator between the Model and View

• ViewModel exposes data and commands to the View

• MVVM helps in unit testing and maintainability

• Example: Android Architecture Components provide support for MVVM

MVC is a design pattern that separates an application into three main components: Model, View, and Controller. MVVM is a variation of MVC with an added ViewModel layer.

• MVC stands for Model-View-Controller, where Model represents the data, View represents the UI, and Controller acts as an intermediary between Model and View.

• MVVM stands for Model-View-ViewModel, which adds a ViewModel layer between the View and Model. ViewModel exposes data and methods to the View.

• In MVC, the V...read more

MVVM and MVC are both design patterns used in software development to separate concerns and improve maintainability.

• MVC separates the application into Model, View, and Controller components.

• MVVM adds a ViewModel layer between the View and Model to handle user interactions and data binding.

• MVVM is commonly used in WPF and Xamarin applications.

• MVC is commonly used in web applications.

• Both patterns aim to improve code organization and maintainability.

MVC and MVVM are design patterns used in software development to separate concerns and improve code maintainability.

• MVC stands for Model-View-Controller, where the model represents the data, the view represents the UI, and the controller acts as an intermediary between them.

• MVVM stands for Model-View-ViewModel, where the view model acts as an intermediary between the view and the model, handling user input and updating the model.

• MVVM is commonly used in WPF and Xamarin applic...read more

MVVM (Model-View-ViewModel) offers separation of concerns, improved testability, and easier maintenance.

• Separation of concerns: MVVM separates the UI logic from the business logic, making the codebase more modular and maintainable.

• Improved testability: With MVVM, the ViewModel can be easily unit tested without the need for UI components, leading to more reliable tests.

• Easier maintenance: MVVM promotes a clear separation between the UI and the data, making it easier to update ...read more

MVVM is an architectural pattern that separates the UI, business logic, and data layers in an Android app.

• Model: Represents the data and business logic of the application.

• View: Represents the UI components of the application.

• ViewModel: Acts as a mediator between the Model and View, handling communication and logic.

• Data binding: Allows automatic updates between the ViewModel and View.

• Example: Using LiveData to observe changes in data and update the UI accordingly.