RxJava2.X版本-create语法

参考< https://www.jianshu.com/p/0cd258eecf60>

1、RxJava调用顺序

<1>Obserable创建

  public Observable getRxJavaCreateExampleData() {
        return Observable.create(new ObservableOnSubscribe() {
            @Override
            public void subscribe(ObservableEmitter emitter) {
                LogUtils.debug(TAG, "getRxJavaCreateExampleData---:" + 1);
                emitter.onNext(1);

                LogUtils.debug(TAG, "getRxJavaCreateExampleData---:" + 2);
                emitter.onNext(2);

                LogUtils.debug(TAG, "getRxJavaCreateExampleData---:" + 3);
                emitter.onNext(3);
                emitter.onComplete();
                LogUtils.debug(TAG, "getRxJavaCreateExampleData---:" + 4);
                emitter.onNext(4);
            }
        });
    }

<2>Observer创建&订阅

  model.getRxJavaCreateExampleData()
                .subscribe(new Observer() {
                    private Disposable disposable;

                    @Override
                    public void onSubscribe(Disposable d) {
                        disposable = d;
                        LogUtils.error(TAG, "rxJavaCreateExample---:onSubscribe");
                    }

                    @Override
                    public void onNext(Integer integer) {
                        LogUtils.error(TAG, "rxJavaCreateExample---:" + integer);
                    }

                    @Override
                    public void onError(Throwable e) {
                        LogUtils.error(TAG, "rxJavaCreateExample---:onError");
                    }

                    @Override
                    public void onComplete() {
                        LogUtils.error(TAG, "rxJavaCreateExample---:onComplete");

                    }
                });

调用日志

08-08 10:23:43.126 19790-19790/com.example.zhang E/MainPresenter: rxJavaCreateExample---:onSubscribe
08-08 10:23:43.126 19790-19790/com.example.zhang D/MainModel: getRxJavaCreateExampleData---:1
08-08 10:23:43.128 19790-19790/com.example.zhang E/MainPresenter: rxJavaCreateExample---:1
08-08 10:23:43.128 19790-19790/com.example.zhang D/MainModel: getRxJavaCreateExampleData---:2
08-08 10:23:43.129 19790-19790/com.example.zhang E/MainPresenter: rxJavaCreateExample---:2
08-08 10:23:43.129 19790-19790/com.example.zhang D/MainModel: getRxJavaCreateExampleData---:3
08-08 10:23:43.129 19790-19790/com.example.zhang E/MainPresenter: rxJavaCreateExample---:3
08-08 10:23:43.131 19790-19790/com.example.zhang E/MainPresenter: rxJavaCreateExample---:onComplete
08-08 10:23:43.132 19790-19790/com.example.zhang D/MainModel: getRxJavaCreateExampleData---:4

<3>添加线程调度

   model.getRxJavaCreateExampleData()
                .subscribeOn(Schedulers.io())
                .unsubscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Observer() {
                    private Disposable disposable;

                    @Override
                    public void onSubscribe(Disposable d) {
                        disposable = d;
                        LogUtils.error(TAG, "rxJavaCreateExample---:onSubscribe");
                    }

                    @Override
                    public void onNext(Integer integer) {
                        LogUtils.error(TAG, "rxJavaCreateExample---:" + integer);
//                        if (integer == 2) {
//                            disposable.dispose();
//                        }
                    }

                    @Override
                    public void onError(Throwable e) {
                        LogUtils.error(TAG, "rxJavaCreateExample---:onError");
                    }

                    @Override
                    public void onComplete() {
                        LogUtils.error(TAG, "rxJavaCreateExample---:onComplete");

                    }
                });

调用日志

08-08 10:37:06.349 21365-21365/com.example.zhang E/MainPresenter: rxJavaCreateExample---:onSubscribe
08-08 10:37:06.354 21365-21827/com.example.zhang D/MainModel: getRxJavaCreateExampleData---:1
    getRxJavaCreateExampleData---:2
    getRxJavaCreateExampleData---:3
    getRxJavaCreateExampleData---:4
08-08 10:37:06.355 21365-21365/com.example.zhang E/MainPresenter: rxJavaCreateExample---:1
    rxJavaCreateExample---:2
    rxJavaCreateExample---:3
    rxJavaCreateExample---:onComplete

备注：测试Obserable 数据增加到1000 ，不再是Obserable把数据发送完，Obserer才开始。而是没有什么规律，这就是异步线程。

<4>Disposable中断

  model.getRxJavaCreateExampleData()
                .subscribeOn(Schedulers.io())
                .unsubscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Observer() {
                    private Disposable disposable;

                    @Override
                    public void onSubscribe(Disposable d) {
                        disposable = d;
                        LogUtils.error(TAG, "rxJavaCreateExample---:onSubscribe");
                    }

                    @Override
                    public void onNext(Integer integer) {
                        LogUtils.error(TAG, "rxJavaCreateExample---:" + integer);
                        if (integer == 2) {
                            disposable.dispose();
                        }
                    }

                    @Override
                    public void onError(Throwable e) {
                        LogUtils.error(TAG, "rxJavaCreateExample---:onError");
                    }

                    @Override
                    public void onComplete() {
                        LogUtils.error(TAG, "rxJavaCreateExample---:onComplete");

                    }
                });

日志

08-08 10:49:10.831 23273-23273/com.example.zhang E/MainPresenter: rxJavaCreateExample---:onSubscribe
08-08 10:49:10.835 23273-23706/com.example.zhang D/MainModel: getRxJavaCreateExampleData---:1
    getRxJavaCreateExampleData---:2
    getRxJavaCreateExampleData---:3
    getRxJavaCreateExampleData---:4
08-08 10:49:10.837 23273-23273/com.example.zhang E/MainPresenter: rxJavaCreateExample---:1
    rxJavaCreateExample---:2

参考
https://www.jianshu.com/p/464fa025229e