Question 1

VIPER vs MVVM: which is better for iOS apps?

Accepted Answer

VIPER offers stricter separation of concerns and better testability but is more verbose, while MVVM is lighter and integrates well with SwiftUI. This sample shows VIPER's strengths with UIKit, making it ideal for learning but not always the best for modern reactive apps.

Question 2

How to implement CoreData in a VIPER iOS app?

Accepted Answer

This project demonstrates CoreData integration within the Interactor layer for data management. You can refer to the persistence modules in the sample to see how entities are handled and data is stored locally, following VIPER principles.

Question 3

What are the main components of VIPER architecture?

Accepted Answer

VIPER consists of View, Interactor, Presenter, Entity, and Router. This sample app provides a clear implementation of each, with diagrams and code examples to illustrate their roles and interactions, as shown in the blueprint image.

Question 4

Can I use Alamofire with VIPER for networking?

Accepted Answer

Yes, this project uses Alamofire in the Interactor layer to handle API requests. It shows how to abstract network calls, manage responses, and load images with AlamofireImage, keeping networking logic separate from UI concerns.

Question 5

How does VIPER handle navigation between screens?

Accepted Answer

Navigation is managed by the Router component, which handles view transitions and dependency injection. In this sample, the Router keeps presentation logic separate from view controllers, ensuring clean architecture and modularity.

Question 6

Is VIPER suitable for small iOS projects?

Accepted Answer

VIPER is often overkill for small projects due to its boilerplate and complexity. This sample is best for learning or medium to large apps where maintainability and testability are priorities, not for quick prototypes.

Question 7

How to add unit tests to a VIPER-based iOS app?

Accepted Answer

While this sample doesn't include tests, VIPER's separation makes unit testing easier by allowing independent testing of Presenters and Interactors with mocked dependencies. You'd need to implement tests separately, following patterns not covered here.

iOS-Viper-Architecture

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