RxJava AsyncSubject|极客教程

RxJava AsyncSubject

AsyncSubject在发送完最后一个值后，会发送一个完成事件或接收到的错误给订阅者。

类声明

以下是io.reactivex.subjects.AsyncSubject类的声明：

public final class  AsyncSubject<T>
extends Subject<T>

异步主题示例

使用您选择的任何编辑器，在C:> RxJava中创建以下Java程序。

ObservableTester.java

import io.reactivex.subjects. AsyncSubject;
public class ObservableTester  {
   public static void main(String[] args) {   
      final StringBuilder result1 = new StringBuilder();
      final StringBuilder result2 = new StringBuilder();         

      AsyncSubject<String> subject =  AsyncSubject.create(); 
      subject.subscribe(value -> result1.append(value) ); 
      subject.onNext("a"); 
      subject.onNext("b"); 
      subject.onNext("c"); 
      subject.subscribe(value -> result2.append(value)); 
      subject.onNext("d"); 
      subject.onComplete();

      //Output will be d being the last item emitted
      System.out.println(result1);
      //Output will be d being the last item emitted     
      System.out.println(result2);
   }
}