获取数据时发生方向更改时发生RxJava2 UndeliverableException

如果在我的应用程序获取新的redditNews时更改了设备的方向，则会出现以下错误

  E/AndroidRuntime: FATAL EXCEPTION: RxCachedThreadScheduler-1
    Process: com.spicywdev.schmeddit, PID: 26522
    io.reactivex.exceptions.UndeliverableException: The exception could not be delivered to the consumer because it has already canceled/disposed the flow or the exception has nowhere to go to begin with. Further reading: https://github.com/ReactiveX/RxJava/wiki/What's-different-in-2.0#error-handling | null
        at io.reactivex.plugins.RxJavaPlugins.onError(RxJavaPlugins.java:367)
        at io.reactivex.internal.operators.observable.ObservableCreate$CreateEmitter.onError(ObservableCreate.java:73)
        at io.reactivex.internal.operators.observable.ObservableCreate.subscribeActual(ObservableCreate.java:43)
        at io.reactivex.Observable.subscribe(Observable.java:12090)
        at io.reactivex.internal.operators.observable.ObservableSubscribeOn$SubscribeTask.run(ObservableSubscribeOn.java:96)
        at io.reactivex.Scheduler$DisposeTask.run(Scheduler.java:578)
        at io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:66)
        at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:57)
        at java.util.concurrent.FutureTask.run(FutureTask.java:237)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:272)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
        at java.lang.Thread.run(Thread.java:762)
     Caused by: java.io.InterruptedIOException
        at okhttp3.internal.http2.Http2Stream.waitForIo(Http2Stream.java:579)
        at okhttp3.internal.http2.Http2Stream.takeResponseHeaders(Http2Stream.java:143)
        at okhttp3.internal.http2.Http2Codec.readResponseHeaders(Http2Codec.java:125)
        at okhttp3.internal.http.CallServerInterceptor.intercept(CallServerInterceptor.java:88)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
        at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:45)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
        at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
        at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:126)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
        at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:200)
        at okhttp3.RealCall.execute(RealCall.java:77)
        at retrofit2.OkHttpCall.execute(OkHttpCall.java:180)
        at retrofit2.ExecutorCallAdapterFactory$ExecutorCallbackCall.execute(ExecutorCallAdapterFactory.java:91)
        at com.spicywdev.schmeddit.features.news.NewsManager$getNews$1.subscribe(NewsManager.kt:16)
        at io.reactivex.internal.operators.observable.ObservableCreate.subscribeActual(ObservableCreate.java:40)

这就是这门课的样子。函数

requestNews（）

中发生错误

---

我对RxJava很陌生——如果有人能帮我解决这个问题，我会非常高兴。多谢各位

您可以通过以下方式覆盖Rx错误处理程序：

使用自定义MyApplication扩展应用程序类

然后在应用程序类的onCreate方法中编写：

@Override
public void onCreate() {
    super.onCreate();
    RxJavaPlugins.setErrorHandler(throwable -> {}); // nothing or some logging
}

将MyApplication类添加到清单：

<application
    android:name=".MyApplication"
    ...>

可能是（未测试），有可能用onNext（标记）改变可观察到的错误，标记使“正常onNext”和“错误onNext”（替换on错误）之间存在差异

onNext（0）=>是由于异常引起的（您可以通过公共静态字符串获取异常）

onNext（1）=>无错误

发射器.onError（ex）；=>发射器.onNext（0）

在《观察家报》中：

@Override
public void onNext(Integer message) {
    if (message ==0 )
        handleError();
    else
        handleNext();
}

当然，它不是很“干净”，但它可以解决问题…
为了捕获第三方库或您自己的代码可能会引发的此类错误，请使用RxJavaPlugins，并在有趣的情况下。。。如果您使用Rx写入此代码，则未锁定的Rx错误将传递到此代码，因此必须检查异常类型：

RxJavaPlugins.setErrorHandler {
        if( it is  UndeliverableException){
            Toast.makeText(view?.getContext(), "UndeliverableException: " + it.message, Toast.LENGTH_LONG).show()
            return@setErrorHandler
        }
    }

有关参考信息，请查看此链接：
您是否阅读了异常消息？@akarnokd是的，我想我理解问题所在。异常未到达其目标。但我真的不明白如何在RxJava的上下文中修复它/错误消息中有一个指向要读取的wiki的链接。wiki部分中有一个这样的示例：搜索
RxJavaPlugins.setErrorHandler
。这是一个全局处理程序，在应用程序生命周期的早期某处定义它。使用Kotlin，它更简单
RxJavaPlugins.setErrorHandler{}
RxJavaPlugins.setErrorHandler {
        if( it is  UndeliverableException){
            Toast.makeText(view?.getContext(), "UndeliverableException: " + it.message, Toast.LENGTH_LONG).show()
            return@setErrorHandler
        }
    }