Android Studio 3.0.0-beta1——NoClassDefFoundError

自从将Android Studio升级到v3.0.0-beta1并将classpath修改为

'com.Android.tools.build:gradle:3.0.0-beta1'

之后，每当rxjava/改造代码抛出错误（本例中为401 HttpException）时，我都会遇到以下错误

• 已为RxJava调用适当地设置了所有错误处理程序
• Android sdk构建工具v26.0.1
• 试图清理、重建等
• 已尝试禁用即时运行

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这个问题由谷歌解决，并在年得到了解决

2017年8月11日，星期五

Android Studio 3.0 Beta 2现已在 金丝雀和德夫频道。此版本修复了以下问题： 导致编译器在执行以下操作时引发ClassNotFoundException 启用Java 8语言功能并指定MinSDK版本19或 这也导致一些代码分析工具，如ProGuard 失败。有关更多信息，请参阅第64527520期

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@cricket_007 401正在RxJava onError处理程序中处理。我相信问题是由以下原因引起的：

：java.lang.NoClassDefFoundError:未能解决：Lcom/google/devtools/build/android/desugar/runtime/ThrowableExtension由于代码库中唯一的变化是更新为as 3.0.0-Beta1，所以beta 1中还有另一个错误，我发现它似乎又回到了Android Studio 3.0 beta 3中，我也在beta 3中看到了它。啊。有什么已知的解决办法吗？
java.lang.IllegalStateException: Fatal Exception thrown on Scheduler.Worker thread.
    at rx.android.schedulers.LooperScheduler$ScheduledAction.run(LooperScheduler.java:114)
    at android.os.Handler.handleCallback(Handler.java:746)
    at android.os.Handler.dispatchMessage(Handler.java:95)
    at android.os.Looper.loop(Looper.java:148)
    at android.app.ActivityThread.main(ActivityThread.java:5443)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
    Caused by: rx.exceptions.OnErrorFailedException: Error occurred when trying to propagate error to Observer.onError
    at rx.observers.SafeSubscriber._onError(SafeSubscriber.java:187)
    at rx.observers.SafeSubscriber.onError(SafeSubscriber.java:115)
    at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber.checkTerminated(OperatorObserveOn.java:273)
    at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber.call(OperatorObserveOn.java:216)
    at rx.android.schedulers.LooperScheduler$ScheduledAction.run(LooperScheduler.java:107)
    at android.os.Handler.handleCallback(Handler.java:746) 
    at android.os.Handler.dispatchMessage(Handler.java:95) 
    at android.os.Looper.loop(Looper.java:148) 
    at android.app.ActivityThread.main(ActivityThread.java:5443) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 
    Caused by: rx.exceptions.CompositeException: 2 exceptions occurred. 
    at rx.observers.SafeSubscriber._onError(SafeSubscriber.java:187) 
    at rx.observers.SafeSubscriber.onError(SafeSubscriber.java:115) 
    at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber.checkTerminated(OperatorObserveOn.java:273) 
    at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber.call(OperatorObserveOn.java:216) 
    at rx.android.schedulers.LooperScheduler$ScheduledAction.run(LooperScheduler.java:107) 
    at android.os.Handler.handleCallback(Handler.java:746) 
    at android.os.Handler.dispatchMessage(Handler.java:95) 
    at android.os.Looper.loop(Looper.java:148) 
    at android.app.ActivityThread.main(ActivityThread.java:5443) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 
    Caused by: rx.exceptions.CompositeException$CompositeExceptionCausalChain: Chain of Causes for CompositeException In Order Received =>
    at android.util.Log.getStackTraceString(Log.java:522)
    at com.android.internal.os.RuntimeInit.Clog_e(RuntimeInit.java:61)
    at com.android.internal.os.RuntimeInit.-wrap0(RuntimeInit.java)
    at com.android.internal.os.RuntimeInit$UncaughtHandler.uncaughtException(RuntimeInit.java:86)
    at java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:693)
    at java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:690)
    at rx.android.schedulers.LooperScheduler$ScheduledAction.run(LooperScheduler.java:118)
    at android.os.Handler.handleCallback(Handler.java:746) 
    at android.os.Handler.dispatchMessage(Handler.java:95) 
    at android.os.Looper.loop(Looper.java:148) 
    at android.app.ActivityThread.main(ActivityThread.java:5443) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 
    Caused by: retrofit2.adapter.rxjava.HttpException: HTTP 401 Unauthorized
    at retrofit2.adapter.rxjava.OperatorMapResponseToBodyOrError$1.onNext(OperatorMapResponseToBodyOrError.java:43)
    at retrofit2.adapter.rxjava.OperatorMapResponseToBodyOrError$1.onNext(OperatorMapResponseToBodyOrError.java:38)
    at retrofit2.adapter.rxjava.RxJavaCallAdapterFactory$RequestArbiter.request(RxJavaCallAdapterFactory.java:173)
    at rx.internal.operators.OperatorSubscribeOn$SubscribeOnSubscriber$1.request(OperatorSubscribeOn.java:109)
    at rx.Subscriber.setProducer(Subscriber.java:211)
    at rx.internal.operators.OperatorSubscribeOn$SubscribeOnSubscriber.setProducer(OperatorSubscribeOn.java:105)
    at rx.Subscriber.setProducer(Subscriber.java:205)
    at retrofit2.adapter.rxjava.RxJavaCallAdapterFactory$CallOnSubscribe.call(RxJavaCallAdapterFactory.java:152)
    at retrofit2.adapter.rxjava.RxJavaCallAdapterFactory$CallOnSubscribe.call(RxJavaCallAdapterFactory.java:138)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
    at rx.Observable.unsafeSubscribe(Observable.java:10346)
    at rx.internal.operators.OperatorSubscribeOn$SubscribeOnSubscriber.call(OperatorSubscribeOn.java:100)
    at rx.internal.schedulers.CachedThreadScheduler$EventLoopWorker$1.call(CachedThreadScheduler.java:230)
    at rx.internal.schedulers.ScheduledAction.run(ScheduledAction.java:55)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:423)
    at java.util.concurrent.FutureTask.run(FutureTask.java:237)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:269)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
    at java.lang.Thread.run(Thread.java:818)
    Caused by: java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/devtools/build/android/desugar/runtime/ThrowableExtension;