RXSwift01

//创建 Observable 序列
    func createObservable(){
        /*
        let observable = Observable<Int>.just(5)
        let observableStr = Observable.of("A","B","C")
        let observableArr = Observable.from(["A","B","C"])
        let observableEmpty = Observable<Int>.empty()
        let observareNaver = Observable<Int>.never()
        let observareError = Observable<Int>.error(NSError.init())
        let observareRange = Observable.range(start: 1, count: 5)
        let observareRange1 = Observable.of(1,2,3,4,5)
        let observareGen = Observable.generate(initialState: 0, condition: {$0 <= 10}, iterate: {$0 + 2})
        
        print(observable,observableStr,observableArr,observableEmpty,
              observareError,observareNaver,observareRange,observareRange1,observareGen)
        */
        let observareCreate = Observable<String>.create { (observer) -> Disposable in
            //观察者发出事件
            observer.onNext("rxswift.com")
            //发出完成事件
            observer.onCompleted()
            //因为一个订阅行为会有一个Disposable类型的返回值，所以在结尾一定要returen一个Disposable
            return Disposables.create()
        }
        observareCreate.subscribe { (str) in
            print(str)
        }.dispose()
        //工厂模式
        var isOdd = true
        let factory:Observable<Int> = Observable.deferred { () -> Observable<Int> in
            isOdd = !isOdd
            if isOdd {
                return Observable.of(1,3,5,7)
            }else{
                return Observable.of(2,4,6,8)
            }
        }
        factory.subscribe { (result) in
            print(result)
        }.dispose()
        factory.subscribe { (event) in
            print(event)
        }.dispose()
        //定时器唯一性
        let obervableTime = Observable<Int>.timer(5, scheduler: MainScheduler.instance)
        print(obervableTime.subscribe { (event) in
            print(event)
        })
        
        let observableStr = Observable.of("A","B","C")
        //使用subscription常量存储这个订阅方法
        let subscription = observableStr.subscribe { (element) in
            print(element)
        }
        //销毁订阅
        subscription.dispose()
        
        let disposeBag = DisposeBag.init()
        let obserable = Observable.of("A","B","C")
        obserable.subscribe { (event) in
            print(event)
        }.disposed(by: disposeBag)
        
        //每个一秒发出一个索引  map ---bind  进行绑定
        let obserable1 = Observable<Int>.interval(1, scheduler: MainScheduler.instance)
        obserable1.map{"当前索引:\($0)"}.bind { [weak self](text) in
            self?.label.text = text
        }.disposed(by: disposeBag)
        
        let obserable2:AnyObserver<String> = AnyObserver.init { (event) in
            switch event{
            case .next(let data):
                print(data)
            case .error(let error):
                print(error)
            case .completed:
                print("Completable")
            }
            
        }
        obserable.subscribe(obserable2).dispose()
        
        let obserable3:AnyObserver<String> = AnyObserver.init { (event) in
            switch event {
            case .next(let text):
                self.label.text = text
            default:
                break
            }
        }
        let obserable4 = Observable<Int>.interval(1, scheduler: MainScheduler.instance)
        obserable4.map{"当前索引:\($0)"}.bind(to: obserable3).disposed(by: disposeBag)
        
        
        //观察者模式
        let observer3:Binder<String> = Binder.init(label) { (view, text) in
            //刷新UI
            view.text = text
        }
        let observable = Observable<Int>.interval(1, scheduler: MainScheduler.instance)
        observable.map{
            "当前索引:\($0)"
            }.bind(to: observer3)
            .disposed(by: disposeBag)
        
        let observableLbl = Observable<Int>.interval(1, scheduler: MainScheduler.instance)
        //RXSwift绑定属性
        observableLbl.map {"当前索引:\($0)"}
            .bind(to: label.rx.text)
            .disposed(by: disposeBag)
    }