RxSwiftと愉快な仲間たち / RxSwift with Units

Gotanda.mobile #1 on 2016/05/20

Transcript

1. RxSwiftͱ༇շͳ஥ؒͨͪ Gotanda.mobile #1 in Mobile Factory on 2016/05/20 ϛώϟΤϧ@mihyaeru21
2. ͓·͑୭Α • ϛώϟΤϧ @mihyaeru21 • ࠷ۙͷݴޠɿSwift/Kotlin/Perl • ·ͩ·ͩϋϯλʔ • ϞφυΛཧղ͍ͨ͠
3. RxSwit
4. Unit
5. Unit • Driver • Variable • ControlEvent/ControlProperty
6. Unit • RxCocoa͕ఏڙ͢Δศར͘Μ • ෺ཧͱ͔ͷ୯Ґͱͯ͠ͷUnitʹ͔͚͍ͯΔΒ͍͠ ※RxCocoaʹؚ·ΕΔͱެࣜυΩϡϝϯτʹ͋Δ͚ͲVariable͸RxSwiftʹؚ·ΕΔ
7. Driver
8. Driver • Τϥʔ͕ྲྀΕͳ͍ • observe on ϝΠϯεϨου • share͞ΕΔ • (ਖ਼֬ʹ͸ shareReplayLatestWhileConnected )
9. Driver • ϞσϧͱUIͷؒʹೖͬͨΓ • UIͱUIΛܨ͍ͩΓ • ϋʔυ΢ΣΞͷυϥΠόιϑτ΢ΣΞతͳͱ͜Ζ͔Β
 ໊෇͚ΒΕͨ
10. Driver fetchUser() .map { $0.name } .observeOn(MainScheduler.instance) .bindTo(label.rx_text)
11. Driver fetchUser() .map { $0.name } .observeOn(MainScheduler.instance) .bindTo(label.rx_text) όοΫάϥ΢ϯυͰσʔλΛऔͬͯ͘Δ UIͷߋ৽͸ϝΠϯεϨουඞਢ ϥϕϧͷςΩετʹόΠϯυ͢Δ
12. Driver fetchUser() .map { $0.name } .asDriver(onErrorJustReturn: "") .drive(label.rx_text)
13. Driver fetchUser() .map { $0.name } .asDriver(onErrorJustReturn: "") .drive(label.rx_text) Driverʹม׵ ϥϕϧͷςΩετʹόΠϯυ͢Δ
14. Driver let userName = fetchUser() .map { $0.name } .observeOn(MainScheduler.instance) userName.bindTo(label.rx_text) userName.bindTo(otherLabel.rx_text)
15. Driver let userName = fetchUser() .map { $0.name } .observeOn(MainScheduler.instance) .share() userName.bindTo(label.rx_text) userName.bindTo(otherLabel.rx_text) share()͠ͳ͍ͱ2ճൃՐ͢Δ
16. Driver let userName = fetchUser() .map { $0.name } .asDriver(onErrorJustReturn: "") userName.drive(label.rx_text) userName.drive(otherLabel.rx_text)
17. Driver let userName = fetchUser() .map { $0.name } .asDriver(onErrorJustReturn: "") userName.drive(label.rx_text) userName.drive(otherLabel.rx_text) share()తͳ͜ͱΛ͍ͯ͠Δ͔ΒൃՐ͸1ճͷΈ
18. Driver • ʮͦΕɺObservableͰ΋Ͱ͖ͯΔ͡ΌΜʯ • ͸͍
19. Driver • UIͱܨ͙ҙਤΛ໌֬ʹ͢Δ • ҆શ౓ΛߴΊΔ • Driverʹม׵ޙ͸observeεϨουͷมߋ͸Ͱ͖ͳ͍ • share()ͯ͘͠ΕΔ
20. Variable
21. Variable • Τϥʔ͕ྲྀΕͳ͍ • share͞ΕΔ
22. Variable • BehaviorSubjectͷWrapper • valueϓϩύςΟΛ௨ͯ͠࠷৽ͷ஋ʹΞΫηεͰ͖Δ • valueϓϩύςΟ΁ͷ୅ೖ͸on(.Next)ͱͯ͠ྲྀΕΔ • ObservableʹͳΔ͚ͲObserverʹ͸ͳΒͳ͍ • ஋Λྲྀͨ͢Ίʹ͸valueΛඞͣܦ༝͢Δ
23. Variable let variable = Variable(0) variable .asDriver() .map { "value: \($0)" } .drive(label.rx_text) variable.value = 99 print("variable.value = \(variable.value)")
24. Variable let variable = Variable(0) variable .asDriver() .map { "value: \($0)" } .drive(label.rx_text) variable.value = 99 print("variable.value = \(variable.value)") label.text͕”value: 99”ʹͳΔ Variable͸ΤϥʔΛྲྀ͞ͳ͍͔Β Ҿ਺ແ͠൛ͷasDriver()͕͋Δ ಉظతʹ஋ΛऔಘͰ͖Δ
25. ControlEvent ControlProperty
26. ControlEvent/ControlProperty • Τϥʔ͕ྲྀΕͳ͍ • subscribe on ϝΠϯεϨου • observe on ϝΠϯεϨου • share͞ΕΔ
27. ControlEvent/ControlProperty • UIύʔπͷΠϕϯτΛRxͱͭͳ͗ࠐΈ΍͘͢ • ControlEvent • Observable • ControlProperty • Observable / Observer • Observer΋͋Δ
28. ControlEvent/ControlProperty textField.rx_text .asDriver() .drive(label.rx_text) ControlProperty Observer ControlProperty͸ΤϥʔΛྲྀ͞ͳ͍͔Β Ҿ਺ແ͠൛ͷasDriver()͕͋Δ
29. ControlEvent/ControlProperty textField.rx_text .bindTo(label.rx_text) ControlPropertyͷΠϕϯτ͸ϝΠϯεϨουͰྲྀΕΔ
30. ControlEvent/ControlProperty button.rx_tap .asDriver() .map { "tapped!" } .drive(textField.rx_text) ControlEvent΋ΤϥʔΛྲྀ͞ͳ͍͔Β Ҿ਺ແ͠൛ͷasDriver()͕͋Δ ControlEvent ControlProperty
31. ControlEvent/ControlProperty • Cocoaͷ͍ΖΜͳ΍ͭʹ rx_* ͕ੜ͍͑ͯͯΖ͍Ζศར • https://github.com/ReactiveX/RxSwift/blob/master/ Documentation/API.md
32. ౜ಥͳ·ͱΊ • ศརػೳͨͪ • Driver • Variable • ControlEvent/ControlProperty • ͳͯ͘΋ࢮͳͳ͍͚Ͳ͋Δͱ஍ຯʹศར • ஍ຯʹ࢖ͬͯ͜