RxJava:尝试将错误传播到Observer.onError时发生错误

Question

我在Rx库中收到IllegalStateException错误,并且不知道问题根源的确切位置,无论是RxJava还是我可能做错了.

证书锁定(发生在所有服务器请求上)但似乎指向会话超时或注销并重新登录时发生致命崩溃.Repro步骤(大约25%的时间发生)如下:登录,打开列表项 - 滚动一路结束 - 注销 - 重新登录 - 打开应用程序 - 关闭应用程序 - >崩溃!

任何人对如何防止这种情况有任何想法？我发现Observer.onError类似的问题在不一致的情况下触发

java.lang.IllegalStateException: Fatal Exception thrown on Scheduler.Worker thread.
   at rx.internal.schedulers.ScheduledAction.run(ScheduledAction.java:62)
   at android.os.Handler.handleCallback(Handler.java:615)
   at android.os.Handler.dispatchMessage(Handler.java:92)
   at android.os.Looper.loop(Looper.java:137)
   at android.app.ActivityThread.main(ActivityThread.java:4867)
   at java.lang.reflect.Method.invokeNative(Method.java)
   at java.lang.reflect.Method.invoke(Method.java:511)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1007)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:774)
   at dalvik.system.NativeStart.main(NativeStart.java)
Caused by: rx.exceptions.OnErrorFailedException: Error occurred when trying to propagate error to Observer.onError
   at rx.observers.SafeSubscriber._onError(SafeSubscriber.java:201)
   at rx.observers.SafeSubscriber.onError(SafeSubscriber.java:111)
   at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber$2.call(OperatorObserveOn.java:159)
   at rx.internal.schedulers.ScheduledAction.run(ScheduledAction.java:55)
   at android.os.Handler.handleCallback(Handler.java:615)
   at android.os.Handler.dispatchMessage(Handler.java:92)
   at android.os.Looper.loop(Looper.java:137)
   at android.app.ActivityThread.main(ActivityThread.java:4867)
   at java.lang.reflect.Method.invokeNative(Method.java)
   at java.lang.reflect.Method.invoke(Method.java:511)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1007)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:774)
   at dalvik.system.NativeStart.main(NativeStart.java)
Caused by: rx.exceptions.CompositeException: 2 exceptions occurred. 
   at rx.observers.SafeSubscriber._onError(SafeSubscriber.java:201)
   at rx.observers.SafeSubscriber.onError(SafeSubscriber.java:111)
   at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber$2.call(OperatorObserveOn.java:159)
   at rx.internal.schedulers.ScheduledAction.run(ScheduledAction.java:55)
   at android.os.Handler.handleCallback(Handler.java:615)
   at android.os.Handler.dispatchMessage(Handler.java:92)
   at android.os.Looper.loop(Looper.java:137)
   at android.app.ActivityThread.main(ActivityThread.java:4867)
   at java.lang.reflect.Method.invokeNative(Method.java)
   at java.lang.reflect.Method.invoke(Method.java:511)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1007)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:774)
   at dalvik.system.NativeStart.main(NativeStart.java)
Caused by: rx.exceptions.CompositeException$CompositeExceptionCausalChain: Chain of Causes for CompositeException In Order Received =>
   at com.crashlytics.android.SessionDataWriter.getEventAppExecutionExceptionSize(SessionDataWriter.java:597)
   at com.crashlytics.android.SessionDataWriter.getEventAppExecutionExceptionSize(SessionDataWriter.java:600)
   at com.crashlytics.android.SessionDataWriter.getEventAppExecutionExceptionSize(SessionDataWriter.java:600)
   at com.crashlytics.android.SessionDataWriter.getEventAppExecutionSize(SessionDataWriter.java:533)
   at com.crashlytics.android.SessionDataWriter.getEventAppSize(SessionDataWriter.java:492)
   at com.crashlytics.android.CrashlyticsUncaughtExceptionHandler.writeSessionEvent(CrashlyticsUncaughtExceptionHandler.java:956)
   at com.crashlytics.android.CrashlyticsUncaughtExceptionHandler.access$200(CrashlyticsUncaughtExceptionHandler.java:56)
   at com.crashlytics.android.CrashlyticsUncaughtExceptionHandler$7.call(CrashlyticsUncaughtExceptionHandler.java:274)
   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
   at java.util.concurrent.FutureTask.run(FutureTask.java:137)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
   at io.fabric.sdk.android.services.common.ExecutorUtils$1$1.onRun(ExecutorUtils.java:58)
   at io.fabric.sdk.android.services.common.BackgroundPriorityRunnable.run(BackgroundPriorityRunnable.java:13)
   at java.lang.Thread.run(Thread.java:856)

Answer 1

发生的事情是你onError在a 中的实现Subscriber抛出了一个未经检查的异常,它违反了Observable合同,并且中止了OnErrorFailedException在observeOn调度程序中抛出一个可观察的处理.

Answer 2

您可能正在从onError回调中传递一个Activity上下文.当我试图显示一个AlertDialog - 传递给它一个特定的Activity上下文 - 并在该对话框出现之前按下后退按钮时,就会发生这种情况.我的建议是不要以这种方式传递Activity上下文.