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What is MVP and MVC in Android?
MVC (Model — View — Controller), MVP (Model — View — Presenter), and MVVM (Model — View — ViewModel) is the most popular and industry-recognized android architecture pattern among developers.
What comes before an MVP?
So what is an NVP? It stands for No Viable Product. It comes after your Business Model Canvas and before your MVP. From your business canvas you need to form a sales pitch. This sales pitch is then used to prove out the assumption in your canvas.
Is the model-view relationship still present in MVP?
The Model – View relationship based on the Observer pattern still exists in MVP; however, the Presenter can access the View directly. Although this is easy to use and implement, developers need to be careful not to break the logic of the system they are trying to model.
How is a supervising controller different from a passive view?
In Supervising Controller, the view interacts directly with the model to perform simple data-binding that can be defined declaratively, without presenter intervention. The presenter updates the model; it manipulates the state of the view only in cases where complex UI logic that cannot be specified declaratively is required.
The basic idea was “twisting MVC” in a way where the View absorbs the Controller functionality and the new class (the Presenter) is added. The Presenter can access the View and the Model directly, and the Model-View relationship can still exist where relevant.
How are model and controller related in MVC?
Now we know that the Model acts as a Subject from the Observer pattern and the View takes on the role of the Observer object. In the other relationship of the MVC, the View is a Context and the Controller is a Strategy object. Combining our knowledge of the two diagrams, we can draw the MVC UML class diagram as below: