課件源碼瑞客swift1期day27響應式編程

n響應式編程（ReactiveProgramming，簡稱RPp也是一種編程范式，于1997年提出，可以簡化異步編程，提供更優(yōu)雅的數(shù)據(jù)綁定p一般與函數(shù)式融合在一起，所以也會叫做：函數(shù)響應式編程（FunctionalReactiveProgramming，簡稱FRP）n比較著名的、 響應式框架pReactiveCocoaü簡稱RAC，有Objective-C、Swift版本ü官網(wǎng)： pReactiveü簡稱Rx，有眾多編程語言的版本，比如RxJava、RxKotlin、RxJS、RxCpp、RxPHP、RxGo、RxSwift等等ü官網(wǎng)：nRxSwift（ReactiveXforSwift）ReactiveX的Swift版本p源碼：p中文文檔：nRxSwift 上已經(jīng)有詳細的安 ，這里只演Ccds方式的安裝target'target_name'dopod'RxSwift','~>5'pod'RxCocoa','~>5'

②ppodrepoppod

③importimportRxSwiftimportnpRxSwift：Rx標準API的Swift實現(xiàn)，不包括任何iOSpRxCocoa：基于RxSwift，給iOSUI控件擴展了很多Rx nObservable：負責發(fā) nObserver：負責訂閱

序列（Event

publicenumEventpublicenumEvent<Element>///Nextelementisproduced.casenext(Element)///Sequenceterminatedwithanerror.caseerror(Swift.Error)///Sequencecompletedsuccessfully.casecompleted}pnext：perror：攜帶錯誤信息，表明Observablepcompleted：表明Observablevarobservable=varobservable=Observable<Int>.create{observerinreturnDisposables.create()}//observable=Observable.of(1,2,observable=Observable.from([1,2,observable.subscribeobservable.subscribe(onNext:{print("next",$0)},onError:print("error", pleted:{},onDisposed:{varobservable=varobservable=Observable<Int>.create{observerinreturnDisposables.create()}//observable=Observable.just(1)observable=Observable.of(1)observable=Observable.from([1])observable.subscribe{eventinletletobservable=period:scheduler:observable.map"數(shù)值是\($0.bind(to:.disposed(by:letobserver=AnyObserver<Int>.init{eventinswitchevent{case.next(letdata):letobserver=AnyObserver<Int>.init{eventinswitchevent{case.next(letdata):print(data)casepleted:print("completed")case.error(leterror):print("error",error)}})letbinder=Binder<String>(label){label,textinlabel.text=text}Observable.just(1).map{"數(shù)值是\($0)"}.subscribe(binder).dispose()Observable.just(1).map{"數(shù)值是\($0)"}.bind(to:binder).dispose()extensionextensionReactivewhereBase:UIView{varhidden:Binder<Bool>{Binder<Bool>(base){view,valueinview.isHidden=value}}}letobservable=scheduler:MainScheduler.instance)observable.map{$0%2==0}.bind(to:button.rx.hidden).disposed(by:bag)n在開發(fā)中經(jīng)常要對各種狀態(tài)進 ppppBlockletletdata=(name:"Jack",age:(name:"Rose",age:data.bind(to:tableView.rx.items(cellIdentifier:"cell")){,cellcell.textLabel?.text= cell.detailTextLabel?.text="\( }.disposed(by: .subscribe(onNext:{ }).disposed(by: buttonbutton.rx.tap.subscribe(onNext}).disposed(by: classDog:NSObject@objcdynamicvarname:}dog.rx.observe(String.self,.subscribe(onNext:{nameinprint("nameis",name??"nil")}).disposed(by:bag)="larry"="wangwang".subscribe(onNext:{notificationin ",}).disposed(by:Observable.justObservable.just(0.8).bind(to:slider.rx.value.map{}.bind(to:textField.rx.text).disposed(by:.subscribe(onNext:{textinprint("textis",text??"nil")}).disposed(by:p它們是RxCocoa.ControlProperty n在不需要再接 //立即取消訂閱 訂閱observable.subscribe{eventin/當bag銷毀（deinit）時，會自動調用Disposable實例的dispo