RxJava - Trampoline Scheduler

Il metodo Schedulers.trampoline () crea e restituisce uno Scheduler che esegue le code sul thread corrente da eseguire dopo il completamento del lavoro corrente.

Schedulers.trampoline () Esempio

Crea il seguente programma Java utilizzando qualsiasi editor di tua scelta, ad esempio C: \> RxJava.

ObservableTester.java

import java.util.Random;

import io.reactivex.Observable;
import io.reactivex.schedulers.Schedulers;

public class ObservableTester  {
   public static void main(String[] args) throws InterruptedException {
      Observable.just("A", "AB", "ABC")
         .flatMap(v -> getLengthWithDelay(v)
         .doOnNext(s -> System.out.println("Processing Thread " 
            + Thread.currentThread().getName()))
         .subscribeOn(Schedulers.trampoline()))
         .subscribe(length -> System.out.println("Receiver Thread " 
            + Thread.currentThread().getName() 
            + ", Item length " + length));

         Thread.sleep(10000);
   }
   protected static Observable<Integer> getLengthWithDelay(String v) {
      Random random = new Random();
      try {
         Thread.sleep(random.nextInt(3) * 1000);
         return Observable.just(v.length());
      } catch (InterruptedException e) {
         e.printStackTrace();
      }
      return null;
   }
}

Verifica il risultato

Compila la classe usando javac compilatore come segue -

C:\RxJava>javac ObservableTester.java

Ora esegui ObservableTester come segue:

C:\RxJava>java ObservableTester

Dovrebbe produrre il seguente output:

Processing Thread main
Receiver Thread main, Item length 1
Processing Thread main
Receiver Thread main, Item length 2
Processing Thread main
Receiver Thread main, Item length 3