Java Code Examples for io.reactivex.Observable#zip()

public static void main(String[] args) {
    Observable<String> strings = Observable.just("a", "b", "c", "d");
    Observable<Long> ticks = Observable.interval(500, TimeUnit.MILLISECONDS);
    Observable<String> stream = Observable.zip(ticks, strings, (t, s) -> s);

    TestObserver<String> testObserver = stream.test();
    if (testObserver.awaitTerminalEvent(3, TimeUnit.SECONDS)) {
        testObserver
                .assertNoErrors()
                .assertComplete()
                .assertValues("a", "b", "c", "d");
        System.out.println("Cool!");
    } else {
        System.out.println("It did not finish on time");
    }
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    recyclerView = (RecyclerView) findViewById(R.id.recyclerview);

    recyclerView.setLayoutManager(new LinearLayoutManager(getBaseContext()));
    adapter = new Adapter();
    recyclerView.setAdapter(adapter);

    loadWithRetroJsoup();

    Observable.zip(
            Observable.just(""),
            Observable.just("&"),
            new BiFunction<String, String, String>(){

                @Override
                public String apply(@NonNull String s, @NonNull String s2) throws Exception {
                    return null;
                }
            }
    );
}
 

@Test
void zip_test() {
    final WeatherStation station = new BasicWeatherStation();

    Observable<Temperature> temperature = station.temperature();
    Observable<Wind> wind = station.wind();

    Observable.zip(temperature, wind, Weather::new);
    //temperature.zipWith(wind, Weather::new);
}
 

@Test
void zip_test2() {
    final WeatherStation station = new BasicWeatherStation();

    Observable<Temperature> temperature = station.temperature();
    Observable<Wind> wind = station.wind();

    Observable<Weather> weatherObservable = Observable.zip(temperature, wind, Weather::new);
    //temperature.zipWith(wind, Weather::new);

    Observable<LocalDate> nextWeekDays = Observable.range(1, 7)
                                                   .map(i -> LocalDate.now().plusDays(i));
    Observable.fromArray(City.values())
              .flatMap(city -> nextWeekDays.map(date -> new Vacation(city, date)))
              .flatMap(vacation ->
                      Observable.zip(
                              weatherObservable.filter(Weather::computeSunny),
                              vacation.cheapFlightFrom(vacation.getWhere()),
                              vacation.cheapHotel(),
                              (w, f, h) -> {
                                  w.setSunny(true);
                                  return vacation.setWeather(w).setFlight(f).setHotel(h);
                              }
                      ))
              .subscribe(item -> System.out.println("we got: " + item.getWhere() + " 航班折扣：" + item.getFlight()
                                                                                                  .getDiscount() + "折  from the Observable"),
                      throwable -> System.out.println("异常-> " + throwable.getMessage()),
                      () -> System.out.println("Emission completed"));
}
 

private Observable<Boolean> generateBuyIntent(Activity activity, String skuId,
    int defaultRequestCode) {
  SKU sku = skuManager.getSku(skuId);
  BigDecimal amount = skuManager.getSkuAmount(skuId);
  BigDecimal total = amount.multiply(BigDecimal.TEN.pow(DECIMALS));

  Observable<String> getTokenContractAddress = addressProxy.getAppCoinsAddress(networkId)
      .toObservable()
      .subscribeOn(Schedulers.io());
  Observable<String> getIabContractAddress = addressProxy.getIabAddress(networkId)
      .toObservable()
      .subscribeOn(Schedulers.io());

  return Observable.zip(getTokenContractAddress, getIabContractAddress,
      (tokenContractAddress, iabContractAddress) -> {
        Intent intent = buildPaymentIntent(sku, total, tokenContractAddress,
            iabContractAddress);

        currentPayment = new PaymentDetails(PaymentStatus.FAIL, skuId,
            new Transaction(null, null, developerAddress, total.toString(), Status.PENDING));

        if (payments.containsKey(skuId)) {
          throw new IllegalArgumentException(
              "Pending buy action with the same sku found! Did you forget to consume the former?");
        } else {
          payments.put(skuId, currentPayment);

          activity.startActivityForResult(intent, defaultRequestCode);
        }
        return true;
      });
}
 

public <CLASS> Observable<CLASS> get(Class<CLASS> theClass) {
    return Observable.zip(
            onEvent(theClass),
            postAsObservable(new AskedEvent(theClass)),
            new BiFunction<CLASS, Object, CLASS>() {
                @Override
                public CLASS apply(@NonNull CLASS neededObject, @NonNull Object _useless) throws Exception {
                    return neededObject;
                }
            });
}
 

/**
 * Get a list with all products from backend
 */
public Observable<List<Product>> getAllProducts() {
  return Observable.zip(getProducts(0), getProducts(1), getProducts(2), getProducts(3),
      (products0, products1, products2, products3) -> {
        List<Product> productList = new ArrayList<Product>();
        productList.addAll(products0);
        productList.addAll(products1);
        productList.addAll(products2);
        productList.addAll(products3);
        return productList;
      });
}
 

@Override
public Observable<Boolean> isCompletedEventExpired(String eventUid) {
    return Observable.zip(d2.eventModule().events().uid(eventUid).get().toObservable(),
            getExpiryDateFromEvent(eventUid),
            ((event, program) -> DateUtils.getInstance().isEventExpired(null, event.completedDate(), program.completeEventsExpiryDays())));
}