RxJava 2.x新特性总结整理

Flowable.range(0,10)
.subscribe(new Subscriber<Integer>() {
 Subscription sub;
 //当订阅后，会首先调用这个方法，其实就相当于onStart()，
 //传入的Subscription s参数可以用于请求数据或者取消订阅
 @Override
 public void onSubscribe(Subscription s) {
 Log.w("TAG","onsubscribe start");
 sub=s;
 sub.request(1);
 Log.w("TAG","onsubscribe end");
 }
 @Override
 public void onNext(Integer o) {
 Log.w("TAG","onNext--->"+o);
 sub.request(1);
 }
 @Override
 public void onError(Throwable t) {
 t.printStackTrace();
 }
 @Override
 public void onComplete() {
 Log.w("TAG","onComplete");
 }
});

onsubscribe start
onNext--->0
onNext--->1
onNext--->2
...
onNext--->10
onComplete
onsubscribe end

Flowable.create(new FlowableOnSubscribe<Integer>() {
  @Override
  public void subscribe(FlowableEmitter<Integer> e) throws Exception {
  e.onNext(1);
  e.onNext(2);
  e.onNext(3);
  e.onNext(4);
  e.onComplete();
  }
 }
 //需要指定背压策略
 , BackpressureStrategy.BUFFER);

//判断是否登陆
Maybe.just(isLogin())
 //可能涉及到IO操作，放在子线程
 .subscribeOn(Schedulers.newThread())
 //取回结果传到主线程
 .observeOn(AndroidSchedulers.mainThread())
 .subscribe(new MaybeObserver<Boolean>() {
  @Override
  public void onSubscribe(Disposable d) {
  }
  @Override
  public void onSuccess(Boolean value) {
  if(value){
   ...
  }else{
   ...
  }
  }
  @Override
  public void onError(Throwable e) {
  }
  @Override
  public void onComplete() {
  }
 });