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
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);
}
}
验证结果
使用 javac 编译器编译该类,如下所示−
C:\RxJava>javac ObservableTester.java
现在按照以下步骤运行ObservableTester:
C:\RxJava>java ObservableTester
应该产生以下输出:
这个输出应该是这样的−
d
d