本文整理了Java中rx.subjects.Subject.hasObservers()方法的一些代码示例，展示了Subject.hasObservers()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Subject.hasObservers()方法的具体详情如下：
包路径：rx.subjects.Subject
类名称：Subject
方法名：hasObservers

Subject.hasObservers介绍

暂无

代码示例

代码示例来源：origin: cn-ljb/rxjava_for_android

/**是否含有观察者*/
  public boolean hasObservers() {
    return _bus.hasObservers();
  }
}

代码示例来源：origin: akarnokd/RxJava2Interop

@Override
public boolean hasObservers() {
  return source.hasObservers();
}

代码示例来源：origin: THEONE10211024/RxJavaSamples

public boolean hasObservers() {
    return _bus.hasObservers();
  }
}

代码示例来源：origin: akarnokd/RxJava2Interop

@Override
public boolean hasSubscribers() {
  return source.hasObservers();
}

代码示例来源：origin: laotan7237/EasyReader

/**
 * 判断是否有订阅者
 */
public boolean hasObservers() {
  return _bus.hasObservers();
}

代码示例来源：origin: com.netflix.eureka/eureka2-core

@Override
public boolean hasObservers() {
  return delegate.hasObservers();
}

代码示例来源：origin: akarnokd/RxJava2Interop

@Test
public void sj2ToSj1Error() {
  io.reactivex.subjects.PublishSubject<Integer> ps2 = io.reactivex.subjects.PublishSubject.create();
  rx.subjects.Subject<Integer, Integer> sj1 = toV1Subject(ps2);
  rx.observers.AssertableSubscriber<Integer> to = sj1.test();
  assertTrue(sj1.hasObservers());
  assertTrue(ps2.hasObservers());
  sj1.onError(new IOException());
  assertFalse(sj1.hasObservers());
  assertFalse(ps2.hasObservers());
  to.assertFailure(IOException.class);
}

代码示例来源：origin: akarnokd/RxJava2Interop

@Test
public void sj2ToSj1Normal() {
  io.reactivex.subjects.PublishSubject<Integer> ps2 = io.reactivex.subjects.PublishSubject.create();
  rx.subjects.Subject<Integer, Integer> sj1 = toV1Subject(ps2);
  rx.observers.AssertableSubscriber<Integer> to = sj1.test();
  assertTrue(sj1.hasObservers());
  assertTrue(ps2.hasObservers());
  sj1.onNext(1);
  sj1.onNext(2);
  sj1.onCompleted();
  assertFalse(sj1.hasObservers());
  assertFalse(ps2.hasObservers());
  to.assertResult(1, 2);
}

代码示例来源：origin: akarnokd/RxJava2Interop

@Test
public void sj1ToFp2Lifecycle() {
  rx.subjects.Subject<Integer, Integer> sj1 = rx.subjects.PublishSubject.create();
  io.reactivex.processors.FlowableProcessor<Integer> pp2 = toV2Processor(sj1);
  io.reactivex.subscribers.TestSubscriber<Integer> to = pp2.test(0L);
  assertTrue(sj1.hasObservers());
  assertTrue(pp2.hasSubscribers());
  pp2.onNext(1);
  pp2.onError(new IOException());
  assertFalse(sj1.hasObservers());
  assertFalse(pp2.hasSubscribers());
  assertFalse(pp2.hasComplete());
  assertTrue(pp2.hasThrowable());
  assertNotNull(pp2.getThrowable());
  to.assertFailure(rx.exceptions.MissingBackpressureException.class);
}

代码示例来源：origin: akarnokd/RxJava2Interop

@Test
public void sj2ToSj1Lifecycle() {
  io.reactivex.subjects.PublishSubject<Integer> pp2 = io.reactivex.subjects.PublishSubject.create();
  rx.subjects.Subject<Integer, Integer> sj1 = toV1Subject(pp2);
  rx.observers.AssertableSubscriber<Integer> to = sj1.test(0L);
  assertTrue(sj1.hasObservers());
  assertTrue(pp2.hasObservers());
  sj1.onNext(1);
  sj1.onError(new IOException());
  assertFalse(sj1.hasObservers());
  assertFalse(pp2.hasObservers());
  assertFalse(pp2.hasComplete());
  assertTrue(pp2.hasThrowable());
  assertNotNull(pp2.getThrowable());
  to.assertFailure(rx.exceptions.MissingBackpressureException.class);
}

代码示例来源：origin: akarnokd/RxJava2Interop

@Test
public void sj1ToFp2NullValue() {
  rx.subjects.Subject<Integer, Integer> sj1 = rx.subjects.PublishSubject.create();
  io.reactivex.processors.FlowableProcessor<Integer> pp2 = toV2Processor(sj1);
  io.reactivex.subscribers.TestSubscriber<Integer> to = pp2.test();
  pp2.onNext(null);
  assertFalse(pp2.hasSubscribers());
  assertFalse(sj1.hasObservers());
  to.assertFailure(NullPointerException.class);
}

代码示例来源：origin: akarnokd/RxJava2Interop

@Test
public void sj1ToFp2NullException() {
  rx.subjects.Subject<Integer, Integer> sj1 = rx.subjects.PublishSubject.create();
  io.reactivex.processors.FlowableProcessor<Integer> pp2 = toV2Processor(sj1);
  io.reactivex.subscribers.TestSubscriber<Integer> to = pp2.test();
  pp2.onError(null);
  assertFalse(pp2.hasSubscribers());
  assertFalse(sj1.hasObservers());
  to.assertFailure(NullPointerException.class);
}

代码示例来源：origin: akarnokd/RxJava2Interop

@Test
public void fp2ToSj1Error() {
  io.reactivex.processors.FlowableProcessor<Integer> pp2 = io.reactivex.processors.PublishProcessor.create();
  rx.subjects.Subject<Integer, Integer> sj1 = toV1Subject(pp2);
  rx.observers.AssertableSubscriber<Integer> to = sj1.test();
  assertTrue(sj1.hasObservers());
  assertTrue(pp2.hasSubscribers());
  sj1.onError(new IOException());
  assertFalse(sj1.hasObservers());
  assertFalse(pp2.hasSubscribers());
  assertFalse(pp2.hasComplete());
  assertTrue(pp2.hasThrowable());
  assertNotNull(pp2.getThrowable());
  assertTrue(pp2.getThrowable() instanceof IOException);
  to.assertFailure(IOException.class);
}

代码示例来源：origin: akarnokd/RxJava2Interop

@Test
public void sj1ToFp2Error() {
  rx.subjects.Subject<Integer, Integer> sj1 = rx.subjects.PublishSubject.create();
  io.reactivex.processors.FlowableProcessor<Integer> pp2 = toV2Processor(sj1);
  io.reactivex.subscribers.TestSubscriber<Integer> to = pp2.test();
  assertTrue(sj1.hasObservers());
  assertTrue(pp2.hasSubscribers());
  pp2.onError(new IOException());
  assertFalse(sj1.hasObservers());
  assertFalse(pp2.hasSubscribers());
  assertFalse(pp2.hasComplete());
  assertTrue(pp2.hasThrowable());
  assertNotNull(pp2.getThrowable());
  assertTrue(pp2.getThrowable() instanceof IOException);
  to.assertFailure(IOException.class);
}

代码示例来源：origin: akarnokd/RxJava2Interop

@Test
public void sj2ToSj1Backpressured() {
  io.reactivex.subjects.PublishSubject<Integer> pp2 = io.reactivex.subjects.PublishSubject.create();
  rx.subjects.Subject<Integer, Integer> sj1 = toV1Subject(pp2);
  rx.observers.AssertableSubscriber<Integer> to = sj1.test(0L);
  assertTrue(sj1.hasObservers());
  assertTrue(pp2.hasObservers());
  sj1.onNext(1);
  assertFalse(sj1.hasObservers());
  assertFalse(pp2.hasObservers());
  assertFalse(pp2.hasComplete());
  assertFalse(pp2.hasThrowable());
  assertNull(pp2.getThrowable());
  to.assertFailure(rx.exceptions.MissingBackpressureException.class);
}

代码示例来源：origin: akarnokd/RxJava2Interop

@Test
public void fp2ToSj1Normal() {
  io.reactivex.processors.FlowableProcessor<Integer> pp2 = io.reactivex.processors.PublishProcessor.create();
  rx.subjects.Subject<Integer, Integer> sj1 = toV1Subject(pp2);
  rx.observers.AssertableSubscriber<Integer> to = sj1.test();
  assertTrue(sj1.hasObservers());
  assertTrue(pp2.hasSubscribers());
  sj1.onNext(1);
  sj1.onNext(2);
  sj1.onCompleted();
  assertFalse(sj1.hasObservers());
  assertFalse(pp2.hasSubscribers());
  assertTrue(pp2.hasComplete());
  assertFalse(pp2.hasThrowable());
  assertNull(pp2.getThrowable());
  to.assertResult(1, 2);
}

代码示例来源：origin: akarnokd/RxJava2Interop

@Test
public void sj1ToFp2Normal() {
  rx.subjects.Subject<Integer, Integer> sj1 = rx.subjects.PublishSubject.create();
  io.reactivex.processors.FlowableProcessor<Integer> pp2 = toV2Processor(sj1);
  io.reactivex.subscribers.TestSubscriber<Integer> to = pp2.test();
  assertTrue(sj1.hasObservers());
  assertTrue(pp2.hasSubscribers());
  pp2.onNext(1);
  pp2.onNext(2);
  pp2.onComplete();
  assertFalse(sj1.hasObservers());
  assertFalse(pp2.hasSubscribers());
  assertTrue(pp2.hasComplete());
  assertFalse(pp2.hasThrowable());
  assertNull(pp2.getThrowable());
  to.assertResult(1, 2);
}

代码示例来源：origin: akarnokd/RxJava2Interop

@Test
public void sj1ToFp2Lifecycle2() {
  rx.subjects.Subject<Integer, Integer> sj1 = rx.subjects.PublishSubject.create();
  io.reactivex.processors.FlowableProcessor<Integer> pp2 = toV2Processor(sj1);
  io.reactivex.subscribers.TestSubscriber<Integer> to = pp2.test();
  assertTrue(pp2.hasSubscribers());
  assertTrue(sj1.hasObservers());
  assertFalse(pp2.hasComplete());
  assertFalse(pp2.hasThrowable());
  assertNull(pp2.getThrowable());
  BooleanSubscription d1 = new BooleanSubscription();
  pp2.onSubscribe(d1);
  assertFalse(d1.isCancelled());
  pp2.onNext(1);
  pp2.onNext(2);
  pp2.onComplete();
  pp2.onComplete();
  pp2.onError(new IOException());
  pp2.onNext(3);
  BooleanSubscription d2 = new BooleanSubscription();
  pp2.onSubscribe(d2);
  assertFalse(d1.isCancelled());
  assertTrue(d2.isCancelled());
  assertFalse(pp2.hasSubscribers());
  assertFalse(sj1.hasObservers());
  assertTrue(pp2.hasComplete());
  assertFalse(pp2.hasThrowable());
  assertNull(pp2.getThrowable());
  to.assertResult(1, 2);
}

代码示例来源：origin: akarnokd/RxJava2Interop

@Test
public void fp2ToSj1Backpressured() {
  io.reactivex.processors.FlowableProcessor<Integer> pp2 = io.reactivex.processors.ReplayProcessor.create();
  rx.subjects.Subject<Integer, Integer> sj1 = toV1Subject(pp2);
  rx.observers.AssertableSubscriber<Integer> to = sj1.test(0L);
  assertTrue(sj1.hasObservers());
  assertTrue(pp2.hasSubscribers());
  sj1.onNext(1);
  sj1.onNext(2);
  sj1.onNext(3);
  sj1.onNext(4);
  to.assertNoValues().assertNoErrors().assertNotCompleted();
  to.requestMore(1).assertValue(1).assertNoErrors().assertNotCompleted();
  to.requestMore(2).assertValues(1, 2, 3).assertNoErrors().assertNotCompleted();
  sj1.onCompleted();
  to.assertValues(1, 2, 3).assertNoErrors().assertNotCompleted();
  assertFalse(sj1.hasObservers());
  assertFalse(pp2.hasSubscribers());
  assertTrue(pp2.hasComplete());
  assertFalse(pp2.hasThrowable());
  assertNull(pp2.getThrowable());
  to
  .requestMore(1)
  .assertResult(1, 2, 3, 4);
}

代码示例来源：origin: akarnokd/RxJava2Interop

@Test
public void sj1ToFp2Backpressured() {
  rx.subjects.Subject<Integer, Integer> sj1 = rx.subjects.ReplaySubject.create();
  io.reactivex.processors.FlowableProcessor<Integer> pp2 = toV2Processor(sj1);
  io.reactivex.subscribers.TestSubscriber<Integer> to = pp2.test(0L);
  assertTrue(sj1.hasObservers());
  assertTrue(pp2.hasSubscribers());
  pp2.onNext(1);
  pp2.onNext(2);
  pp2.onNext(3);
  pp2.onNext(4);
  to.assertNoValues().assertNoErrors().assertNotComplete();
  to.requestMore(1).assertValue(1).assertNoErrors().assertNotComplete();
  to.requestMore(2).assertValues(1, 2, 3).assertNoErrors().assertNotComplete();
  pp2.onComplete();
  to.assertValues(1, 2, 3).assertNoErrors().assertNotComplete();
  assertFalse(sj1.hasObservers());
  assertFalse(pp2.hasSubscribers());
  assertTrue(pp2.hasComplete());
  assertFalse(pp2.hasThrowable());
  assertNull(pp2.getThrowable());
  to
  .requestMore(1)
  .assertResult(1, 2, 3, 4);
}