RxJava ReplaySubject类

RxJava ReplaySubject类 介绍

ReplaySubject 向当前和晚期观察者重播事件/项目。

RxJava ReplaySubject类 声明

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

RxJava ReplaySubject类 示例

package com.yiidian;

import io.reactivex.subjects.ReplaySubject;

public class ObservableTester  {
   public static void main(String[] args) {   
      final StringBuilder result1 = new StringBuilder();
      final StringBuilder result2 = new StringBuilder();         

      ReplaySubject<String> subject = ReplaySubject.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 abcd
      System.out.println(result1);
      //Output will be abcd being ReplaySubject
      //as ReplaySubject emits all the items
      System.out.println(result2);
   }
}

输出结果为：