{"id":5016,"date":"2023-04-08T15:48:09","date_gmt":"2023-04-08T14:48:09","guid":{"rendered":"https:\/\/www.architecturemaker.com\/?p=5016"},"modified":"2023-04-08T15:48:09","modified_gmt":"2023-04-08T14:48:09","slug":"what-is-mvvm-architecture","status":"publish","type":"post","link":"https:\/\/www.architecturemaker.com\/what-is-mvvm-architecture\/","title":{"rendered":"What is mvvm architecture?"},"content":{"rendered":"

The model-view-viewmodel (MVVM) architecture is a software architectural pattern that separates an application into three major components: the model, the view, and the view model. The model represents the data and business logic of the application, the view implements the presentation layer, and the view model manages the state and behavior of the view.<\/p>\n

The Model-View-ViewModel (MVVM) architecture is a software design pattern that separates an application into three main logical components: the model, the view, and the view model. The pattern is used to make applications easier to maintain and test because the components can be developed independently of each other and then plugged in to the overall application. For example, the view model could be unit-tested without having to worry about the details of the view.<\/p>\n

The MVVM architecture is derived from the well-known Model-View-Controller (MVC) pattern, and many of the same concepts apply. However, there are some key differences. For instance, in MVVM, the view model is responsible for exposing data to the view, and it also handles any processing that needs to be done on that data. In contrast, the controller in MVC is responsible for both exposing data to the view and processing it.<\/p>\n

Another key difference is that, in MVVM, the view is not directly aware of the model. This separation of concerns makes it easier to develop and test the application.<\/p>\n

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If you’re looking to use the MVVM pattern in your own application, there are a few different frameworks that can help. Microsoft’s WPF platform<\/p>\n

What is MVVM architecture explain? <\/h2>\n

MVVM is a way to structure code so that the UI components are separate from the business logic. This makes it easier to develop and maintain an application.<\/p>\n

MVC is a software architecture that separates the components of a application into three parts: the model, the view, and the controller. The view is responsible for the presentation of the data, the controller for the business logic, and the model for the data. This separation of concerns makes it easier to develop, test, and maintain an application.<\/p>\n

MVP is a variation of MVC that separates the presenter from the view. The presenter is responsible for the business logic and the view is responsible for the presentation of the data. This separation of concerns makes it easier to develop, test, and maintain an application.<\/p>\n

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MVVM is a variation of MVP that separates the view model from the view. The view model is responsible for the business logic and the view is responsible for the presentation of the data. This separation of concerns makes it easier to develop, test, and maintain an application.<\/p>\n

Which is better MVC or MVVM <\/h3>\n

MVVM is better than MVC\/MVP because of its unidirectional data and dependency flow. Dependency is one way, thus it is a lot easier to decouple it when we need to. It is also easier for testing. All my projects(written in Kotlin for Android app) are based on MVVM.<\/p>\n

Android’s MVC pattern refers to the default pattern where an Activity class acts as a controller and XML files are views. However, MVVM treats both Activity classes and XML files as views, and ViewModel classes are where you write your business logic. This completely separates an app’s UI from its logic.<\/p>\n

What is MVVM in simple words? <\/h2>\n

MVVM is an architectural pattern in computer software that facilitates the separation of the development of the graphical user interface (GUI; the view)—be it via a markup language or GUI code—from the development of the business logic or back-end logic (the model) such that the view is not directly dependent on the model. This separation of concerns allows for more flexibility in the development of the view, and can make development overall more efficient.<\/p>\n

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MVVM is a three layer architecture that consists of the UI, service, and data layers. All three layers exist within the same application. The term “3-layer” also sometimes refers to n-tier architecture, which is more about separating the UI, service layer, and data layer onto separate servers.<\/p>\n

Why we use MVVM instead of MVC? <\/h2>\n

There are a few key differences between MVVM and MVC architectures. One is that MVVM uses a view-model component, which helps to manage actions in the view and works directly with the view. This allows for a more direct connection between the data in the model and the view, making it easier to manage and update. Additionally, MVVM often uses a Binding layer to help bind data between the view and the model, making it easier to keep the two in sync.<\/p>\n

MVVM can be overkill for simple UIs, and it can be hard to design the ViewModel for bigger cases. Debugging can be difficult when we have complex data bindings.<\/p>\n

Why should you use MVVM <\/h3>\n

MVVM facilitates parallel development of a UI and the building blocks that power it by abstracting the View. This reduces the amount of business logic required in the code behind the View, making it easier to unit test.<\/p>\n

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MVVM is a design pattern that separates the presentation layer from the business logic. This allows for a more testable and maintainable code base. There are several frameworks available that implement the MVVM pattern. Some of these frameworks are Prism, MVVM Light, and Caliburn Micro.