RxJava备注

RxJava老式demo,供参考

        //取消订阅,为了线程安全
        Subscription subscription;
        subscription = Observable.just("123").subscribe(new Action1<String>() {
            @Override
            public void call(String s) {
                System.out.println("tt--" + s);
            }
        });
        subscription.unsubscribe();

        //样例1
        Observable.create(new Observable.OnSubscribe<Integer>() {
            @Override
            public void call(Subscriber<? super Integer> subscriber) {
                subscriber.onNext(1001);
                subscriber.onNext(1002);
                subscriber.onCompleted();
            }
        })
                .subscribeOn(Schedulers.io())//子线程(读写文件、读写数据库、网络信息交互),为前面的代码指定线程
                .observeOn(AndroidSchedulers.mainThread())//UI线程,可以多次切换线程，决定后续代码所在的线程
                .subscribe(new Subscriber<Integer>() {
                    @Override
                    public void onCompleted() {
                        Logger.d("onCompleted");
                    }

                    @Override
                    public void onError(Throwable e) {
                        Logger.d(e.getMessage());
                    }

                    @Override
                    public void onNext(Integer integer) {
                        Logger.d(integer);
                    }
                });

        ////样例2
        String imgFilePath = "images/icon.png";
        Observable.just(imgFilePath).map(new Func1<String, Bitmap>() {
            @Override
            public Bitmap call(String imgFilePath) {
                return getBitmapFromPath(imgFilePath);
            }
        })
                .subscribeOn(Schedulers.io())//子线程(读写文件、读写数据库、网络信息交互),为前面的代码指定线程
                .observeOn(AndroidSchedulers.mainThread())//UI线程,可以多次切换线程，决定后续代码所在的线程
                .subscribe(new Subscriber<Bitmap>() {
                    @Override
                    public void onCompleted() {
                        Logger.d("onCompleted");
                    }

                    @Override
                    public void onError(Throwable e) {
                        Logger.d(e.getMessage());
                    }

                    @Override
                    public void onNext(Bitmap bitmap) {
                        iv.setImageBitmap(bitmap);
                    }
                });

        //样例3
        Observable.just(1, 2, 3, 4).scan(new Func2<Integer, Integer, Integer>() {
            @Override
            public Integer call(Integer integer, Integer integer2) {
                Logger.d(integer + "+" + integer2);
                return integer + integer2;
            }
        })
                .subscribeOn(Schedulers.io())//子线程(读写文件、读写数据库、网络信息交互),只能定义一次为前面的代码指定线程
                .observeOn(AndroidSchedulers.mainThread())//UI线程,可以多次切换线程，决定后续代码所在的线程
                .subscribe(new Subscriber<Integer>() {
                    @Override
                    public void onCompleted() {
                        Logger.d("onCompleted");
                    }

                    @Override
                    public void onError(Throwable e) {
                        Logger.d(e.getMessage());
                    }

                    @Override
                    public void onNext(Integer integer) {
                        Logger.d(integer);
                    }
                });

        //样例4
        Observable.create(new Observable.OnSubscribe<String>() {
            @Override
            public void call(Subscriber<? super String> subscriber) {
                Logger.v("rx_call", Thread.currentThread().getName());

                subscriber.onNext("dd");
                subscriber.onCompleted();
            }
        })
                .map(new Func1<String, String>() {
                    @Override
                    public String call(String s) {
                        Logger.v("rx_map", Thread.currentThread().getName());
                        return s + "88";
                    }
                })
                .subscribeOn(Schedulers.io())//子线程(读写文件、读写数据库、网络信息交互),只能定义一次为前面的代码指定线程
                .observeOn(AndroidSchedulers.mainThread())//UI线程,可以多次切换线程，决定后续代码所在的线程
                .subscribe(new Action1<String>() {
                    @Override
                    public void call(String s) {
                        Logger.v("rx_subscribe", Thread.currentThread().getName());
                    }
                });