5 Steps To Better Architecture | Vahram Shamtsyan

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Transcript

1. SwiftCoders Yerevan Vahram Shamtsyan March, 2019
2. About me! • Software Developer since 2006 • iOS Developer since 2010 • Mobile Development Team Lead at Joomag since 2015
3. Traits of good architecture • Each object should have a clear role • Testability • Easier maintainability • A large number of reusable components
4. 1. Modular Architecture 2. Flow Controllers 3. Dumb View Controllers 4. Dependency Injection 5. Reusable View Components 5 Steps To Better Architecture
5. 1. Modular Architecture
6. Modules Are • Fully decoupled from each other • Aware only about Main Flow Controller
7. • Navigation (Flow Controller) • Storyboard • View Controllers • View Protocols • Presenters • Models (View Models) Every module has it’s own
8. 2. Flow Controllers VC-1 MainFlowController FlowController-1 FlowController-2 VC-2 VC-3 VC-4 VC-5
9. @IBAction func someAction(_ sender: Any) { let storyboard = UIStoryboard(name: "SomeStoryboard", bundle: nil) if let vc = storyboard.instantiateViewController(withIdentifier: “someVC") as? SomeViewController { vc.someObject = someObject if let navController = navigationController { navController.pushViewController(vc, animated: true) } } } Without Flow Controller Using Flow Controller @IBAction func someAction(_ sender: Any) { self.flowController?.someAction } func someAction() { let storyboard: UIStoryboard = UIStoryboard(name: "SomeStoryboard", bundle: nil) let viewController: SomeViewController = (storyboard.instantiateViewController(withIdentifier: “someVC") as? SomeViewController)! self.navigationController.pushViewController(viewController, animated: true) }
10. 3. Dumb View Controllers
11. View Controller = View • the view delegates user interactions to the presenter • the presenter contains the logic of handling user interactions • the presenter communicates with model layer, converts the data to UI friendly format, and updates the view • the presenter has no dependencies to UIKit import UIKit View Presenter
12. 4. Dependency Injection
13. Framework https://github.com/Swinject/Swinject What we config with DI?
14. 5. Reusable View Components
16. BONUS
17. SwiftLint https://github.com/realm/SwiftLint A tool to enforce Swift style and conventions, loosely based on https://github.com/github/swift-style-guide
18. SwiftLint in Action Configure SwiftLint. .swiftlint.yml
19. Thank you!
20. Questions?
21. Vahram Shamtsyan https://www.linkedin.com/in/vahrams https://www.facebook.com/vahram.shamtsyan vahram.shamtsyan@gmail.com