Framework Independent Applications with Swift

How can one structure a swift app in order to decouple it from the platform (iOS, macOS, linux)? Learn through a practical example how cost effective it is to port a swift app for iOS to macOS and the benefits and costs associated with this approach

Transcript

1. Tiago Martinho @martinho_t @SwiftPeerLab tiagomartinho Framework Independent Applications with Swift
2. Outline Motivation Application Structure Practical Example Benefits & Costs 2
3. Also Know As • Ports-And-Adapters • Hexagonal Architecture • Clean Architecture • Layers • Onions • Protocol Oriented Programming 3
5. Motivation 5
6. 6 iOS, tvOS and macOS Application Share Code between Platforms
7. 7 iOS, tvOS and macOS Application Bluetooth Communication Layer Share Code between Platforms TDD all the code
8. 8 iOS, tvOS and macOS Application Bluetooth Communication Layer Native Android and iOS Application Share designs and architectures between platforms Share Code between Platforms TDD all the code
9. 9 iOS, tvOS and macOS Application Bluetooth Communication Layer Native Android and iOS Application Share Code between Platforms TDD all the code Share designs and architectures between platforms
10. Structure of an Application 10
11. Structure of the application 11 Framework Dependent Sensor View … Database Framework Independent Service Presenter … Repository
12. Structure of the application 12 Framework Dependent Framework API Replaceable Not essential Sensor View … Database
13. Structure of the application 13 Framework Independent Service Presenter … Repository Use Cases Heart of the application Essential
14. Practical Example 14
15. Practical Example Login App 15 Login Screen Main Screen
16. Practical Example 16 LoginViewController xib, storyboard, code extends UIViewController LoginView
17. Practical Example 17 LoginViewController Framework Dependent (UIKit) LoginView
18. Practical Example 18 LoginViewController LoginView LoginPresenter LoginService
19. Practical Example 19 LoginViewController LoginView LoginPresenter LoginService Framework Independent
20. Practical Example 20 LoginViewController LoginView LoginPresenter LoginService Easy to: -Test -Port -Maintain
21. Practical Example Result? 4 apps with shared code - iOS (UIKit) - macOS (AppKit) - Swift (Linux) - Inter-app iOS 21
22. DEMO 22
23. Benefits and Costs 23
24. Benefits Easier and practical to test Easier to understand/maintain Abstraction from the Framework 24
25. Benefits Easier and practical to test Easier to understand/maintain Abstraction from the Framework 25
26. Benefits Easier and practical to test Easier to understand/maintain Abstraction from the Framework 26
27. Costs Mindset change Training Indirection 27
28. Costs Mindset change Training Indirection 28
29. Costs Mindset change Training Indirection 29
30. Sample Code https://github.com/ tiagomartinho/LoginScreen https://github.com/ tiagomartinho/Reminders 30
31. References http://alistair.cockburn.us/Hexagonal+architecture https://www.objc.io/issues/13-architecture/viper/ http://matteo.vaccari.name/blog/archives/154 http://www.dossier-andreas.net/software_architecture/ ports_and_adapters.html http://www.growing-object-oriented-software.com http://www.natpryce.com/articles/000772.html https://www.youtube.com/watch?v=RLo6hs1uDLA https://developer.apple.com/videos/play/wwdc2015/408/ 31
32. Slides https://speakerdeck.com/ tiagomartinho/framework- independent-applications- with-swift 32
33. Tiago Martinho @martinho_t @SwiftPeerLab tiagomartinho Thank you!