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RxSwift Training
- 1. RxSwiftRxSwift Training Course &Workshop
- 2. Why Rx?Why RX? Rx S w i f t functionalProgramming Easier to achieve target action Convenient in delegation Deal with async tasks , even with notification Combine tasks which dependent on each other
- 3. Rx FeatureRx Feature Rx S w i f t functionalProgramming Easy to maintain Combine easily Stable Less stateful Without leaks
- 4. Functional programmingFunctional Programming Rx S w i f t functionalProgramming through combine different function to fetch result 組合不同的函數而得到想要的結果 是一種Coding的方式
- 5. Reactive ProgrammingReactive Programming Rx S w i f t functionalProgramming Events in a sequence ( it could be sync or async) Response to each event
- 6. What is RxSwift?Whatis RxSwift R x S w i f t functionalProgramming It’s an array of sequence , the Index would be Time , and the Item will be Event ! 以時間為指標的事件序列陣列
- 7. SubscribeSubscribe R x Sw i f t functionalProgramming let Observable to connect with Observer It called subscription or binding 將可觀察的事件增加響應的動作，以訂閱或是綁定稱之
- 8. Core R x Sw i f t
- 9. R x Sw i f t functionalProgramming 1. Observable 2. Observe 3. Observable & Observe 4. Relays 5. Operator 6. Disposable 7. Scheduler 8. Error Handler
- 10. Before Start R xS w i f t
- 11. FrameworksFrameworks R x Sw i f t - O b s e r v a b l e functionalProgramming github "ReactiveX/RxSwift" ~> 5.0 github "RxSwiftCommunity/RxDataSources" ~> 4.0 RxSwift Link : RxDataSource Link :
- 12. Observable R x Sw i f t
- 13. MonitorMonitor R x Sw i f t - O b s e r v a b l e functionalProgramming Every thing is sequence It can be any thing , ex: temperature , humidity , episode of drama Time ->
- 14. MonitorMonitor R x Sw i f t - O b s e r v a b l e functionalProgramming In App , textField change , Button taps , Switch could be Observables
- 15. MonitorMonitor R x Sw i f t - O b s e r v a b l e functionalProgramming On Next > trigger an Event On Error > generator an Error On complete > finish observable , stop monitor it If knows the feature of observables , choose the observable which match with features
- 16. SingleSingle R x Sw i f t - O b s e r v a b l e functionalProgramming Only contains one event whether Success or Error . It doesn`t effect with Share operator .
- 17. CompletableCompletable R x Sw i f t - O b s e r v a b l e functionalProgramming Only contains one event whether Complete or Error . It doesn`t effect with Share operator .
- 18. MaybeMaybe R x Sw i f t - O b s e r v a b l e functionalProgramming Only contains one event whether Success , Complete or Error . It doesn`t effect with Share operator .
- 19. DriverDriver R x Sw i f t - O b s e r v a b l e functionalProgramming Driver trigger events without Errors , and must run at Main Threads . It dose effects with Share operator .
- 20. SignalSignal R x Sw i f t - O b s e r v a b l e functionalProgramming Signal is just like Driver . But it will replay last event . It dose effects with Share operator .
- 21. Control EventControl Event Rx S w i f t - O b s e r v a b l e functionalProgramming Control event is to describe UI components of events . It must run and subscribe in Main thread . event shouldn’t contains any error.
- 22. Observer R x Sw i f t
- 23. Event responseEvent response Rx S w i f t - O b s e r v e r functionalProgramming observer is use for monitoring events , and responses it with actions How to create an observer ? 1. subscribe 2. binding Observable<Type> Actions
- 24. Any ObserverAny Observer Rx S w i f t - O b s e r v a b l e functionalProgramming It used to describe any kind of observer , you’ll be able to define action in specific status ( next , error , complete)
- 25. BinderBinder R x Sw i f t - O b s e r v a b l e functionalProgramming It contains two features 1.do not need to handle errors 2.make sure run at specific thread
- 26. BinderBinder R x Sw i f t - O b s e r v a b l e functionalProgramming ex : we only care about next event at UI Observer, so it is a good change to use binding It works on Main Thread
- 27. Binder-ReuseBinder-Reuse R x Sw i f t - O b s e r v a b l e functionalProgramming If the observer is usually in used , that can be define with an extension . It can be define like :
- 28. Observable & Observe R xS w i f t
- 29. Special ObjectsSpecial objects Rx S w i f t - O b s e r v a b l e & O b s e r v e r functionalProgramming Some of objects are specials . It can be define in whether Observable or Observer .
- 30. Special ObjectsSpecial objects Rx S w i f t - O b s e r v a b l e & O b s e r v e r functionalProgramming Choose the subject which matches the feature ! It usually used to combine with two events . 1. Async Subject 2. Publish Subject 3. Replay Subject 4.Behavior Subject 5. Variable (deprecated)
- 31. Async SubjectAsync Subject Rx S w i f t - O b s e r v a b l e & O b s e r v e r functionalProgramming The subscriber receives only last object when event has been completed . note : it will not get any element value if the event is not completed
- 32. Publish subjectPublish Subject Rx S w i f t - O b s e r v a b l e & O b s e r v e r functionalProgramming send elements after subscription . It will not send elements which emit before subscription. note : write the character type which the object is .
- 33. Replay SubjectReplay Subject Rx S w i f t - O b s e r v a b l e & O b s e r v e r functionalProgramming send all elements no matter when subscribes .
- 34. Behavior SubjectBehavior Subject Rx S w i f t - O b s e r v a b l e & O b s e r v e r functionalProgramming emit the newest elements . If there is not , emit the default value .
- 35. Disposable R x Sw i f t
- 36. Disposable objectDisposable objects Rx S w i f t - D i s p o s a b l e functionalProgramming In common situation . The resource will release when event calls onError() or onComplete() . You may call dispose() to release the event . Sometimes use DisposeBag to manage life cycle just like ARC .
- 37. Hot & ColdObservablesHot & Cold Observables R x S w i f t - D i s p o s a b l e functionalProgramming reference here • A “hot” Observable may begin emitting items as soon as it is created. • A “cold” Observable, on the other hand, waits until an observer subscribes to it before it begins to emit items.
- 38. Relays R x Sw i f t
- 39. What is relaysWhatis Relays R x S w i f t - R e p l a y s functionalProgramming Relays provides two kinds 1.Publish Relays 2.Behavior Relays Relays never Complete and never emit errors Relays only emit next and never terminate Relays and Subjects are Hot Observables
- 40. Sample RelaysSample Relays R xS w i f t - R e p l a y s functionalProgramming
- 41. Schedulers R x Sw i f t
- 42. Multi threadsMulti threads Rx S w i f t - S c h e d u l e r s functionalProgramming Control task in which thread Qos reference here
- 43. Multi threadsMulti threads Rx S w i f t - S c h e d u l e r s functionalProgramming Rewrite with Rx
- 44. Thread typesThread types Rx S w i f t - S c h e d u l e r s functionalProgramming MainScheduler : > Main Thread SerialDispatchQueueScheduler : > Serial of Dispatcher Queue ConcurrentDispatchQueueScheduler : > Concurrent of Dispatcher Queue OperationQueueScheduler : > Same features like NSOperationQueue
- 45. Error handling R x Sw i f t
- 46. Catch ErrorsCatch Errors Rx S w i f t - E r r o r H a n d l i n g functionalProgramming Task will stop if any error be threw out . There are two methods to prevent error occurs . 1. retry 2. catch
- 47. RetryRetry R x Sw i f t - E r r o r H a n d l i n g functionalProgramming
- 48. catchCatch R x Sw i f t - E r r o r H a n d l i n g functionalProgramming When error occurs , replace with backup Item or Observable .
- 49. Operator R x Sw i f t
- 50. How to decidean operator ?How to decide an operator? R x S w i f t - O p e r a t o r functionalProgramming Operators help to transform elements to other type elements . How to decide an operator
- 51. JustJust R x Sw i f t - O p e r a t o r functionalProgramming Create the only Elements.
- 52. OfOf R x Sw i f t - O p e r a t o r functionalProgramming Create Elements
- 53. FromFrom R x Sw i f t - O p e r a t o r functionalProgramming Turn one Objects into a Observable
- 54. EmptyEmpty R x Sw i f t - O p e r a t o r functionalProgramming Create a empty Observable It also uses in stop observable .
- 55. FilterFilter R x Sw i f t - O p e r a t o r functionalProgramming Filter elements in sequence
- 56. MapMap R x Sw i f t - O p e r a t o r functionalProgramming turn original elements to other form
- 57. FlatMapFlatmap R x Sw i f t - O p e r a t o r functionalProgramming transform the items emitted by an Observable into Observables then flatten the emissions from those into a single Observable . note : FlatMap operator doesn’t care about the order order
- 58. FlatMa p Flatmap R x Sw i f t - O p e r a t o r functionalProgramming
- 59. FlatMapLate st FlatMapLatest R x Sw i f t - O p e r a t o r functionalProgramming it disposes previous subscription when new subscription happens.
- 60. FlatMapLate st FlatMapLatest R x Sw i f t - O p e r a t o r functionalProgramming
- 61. ShareShare R x Sw i f t - O p e r a t o r functionalProgramming Share resources to prevents firing duplicated events
- 62. Share ReplayShare Replay Rx S w i f t - O p e r a t o r functionalProgramming Share replay with times replay : 0 -> Public subject replay : 1 -> Behavior subject replay : n -> Replay subject It will fire observable event again when subscriber become zero
- 63. Share Replay Share Replay R xS w i f t - O p e r a t o r functionalProgramming
- 64. PublicPublic R x Sw i f t - O p e r a t o r functionalProgramming connect several observables , fire them when connected
- 65. MergeMerge R x Sw i f t - O p e r a t o r functionalProgramming merge several observables into one observable It will be stopped when one of observables occurs any error
- 66. ZipZip R x Sw i f t - O p e r a t o r functionalProgramming Combines each index of observables (at least 8) , the length of emission observable will equals to the shortest one
- 67. Systems R x Sw i f t
- 68. Membe rs Member s R x Sw i f t - S y s t e m s functionalProgramming Just like RxCocoa provide UI with Rx , other system also provide frameworks with Rx 1.RxDataSource 2.RxGestures 3.RxAlamofire ……. Other Rx Systems
- 69. RxDataSourc e RxDataSource R x Sw i f t - S y s t e m s functionalProgramming
- 70. 基 本 輸入 畫 面 控 制 functionalProgramming ScenariosScenarios R x S w i f t 1.輸入用戶名稱 > a.密碼框是否可以使用 b.隱藏提示Label 2.密碼輸入是否有效 > a.位元大於6 b.隱藏密碼提示Label 3.當密碼跟使用者名稱都輸入且有效 > 再打開下一步 4.按下下一步按鈕以後 > 彈跳出alert
- 71. A P I控 制 functionalProgramming ScenariosScenarios R x S w i f t 1.一個API完成以後再發另一個API 2.等待兩個API完以後在進行某件事情 (zip)
- 72. 更 新 UI T a b l e V i e w functionalProgramming ScenariosScenarios R x S w i f t a ) 先發request b ) 轉換成List c ) 更新TableUI
- 73. 一 件 事情 以 後 接 續 其 他 事 情 functionalProgramming ScenariosScenarios R x S w i f t a ) 先發request b ) 在寫 案 c ) 更新UI P.S 使用 雙向Observable
- 74. M V VM r e f a c t o r functionalProgramming ScenariosScenarios R x S w i f t 1.修改MVVM Binding方式
- 75. functionalProgramming ReferenceReference R x Sw i f t • 中文文 • 英文文 • FlatMap vs Map • Share • AboutRx
- 76.