NoClassDefFoundError: rx.subscriptions.CompositeSubscription

Question

我有一个使用rxjava和rxAndroid的安卓项目。我突然开始弄到那个崩溃的"NoClassDefFoundError: rx.subscriptions.CompositeSubscription"

我试着在网上查了一下，但找不到解决办法

java.lang.ExceptionInInitializerError
at rx.plugins.RxJavaSchedulersHook.createIoScheduler(RxJavaSchedulersHook.java:84)
at rx.plugins.RxJavaSchedulersHook.createIoScheduler(RxJavaSchedulersHook.java:72)
at rx.schedulers.Schedulers.<init>(Schedulers.java:70)
at rx.schedulers.Schedulers.getInstance(Schedulers.java:47)
at rx.schedulers.Schedulers.newThread(Schedulers.java:108)
at com.myPackage.controllers.modelsControllers.CountriesController.loadCountries(CountriesController.java:121)
at com.myPackage.views.fragments.ChatFragment.onCreateView(ChatFragment.java:57)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:829)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1035)
at android.app.BackStackRecord.run(BackStackRecord.java:635)
at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1397)
at android.app.Activity.performStart(Activity.java:5017)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2032)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
at android.app.ActivityThread.access$600(ActivityThread.java:130)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NoClassDefFoundError: rx.subscriptions.CompositeSubscription
at rx.internal.schedulers.CachedThreadScheduler$CachedWorkerPool.<init>(CachedThreadScheduler.java:48)
at rx.internal.schedulers.CachedThreadScheduler.<clinit>(CachedThreadScheduler.java:139)
at rx.plugins.RxJavaSchedulersHook.createIoScheduler(RxJavaSchedulersHook.java:84) 
at rx.plugins.RxJavaSchedulersHook.createIoScheduler(RxJavaSchedulersHook.java:72) 
at rx.schedulers.Schedulers.<init>(Schedulers.java:70) 
at rx.schedulers.Schedulers.getInstance(Schedulers.java:47) 
at rx.schedulers.Schedulers.newThread(Schedulers.java:108) 
at com.myPackage.controllers.modelsControllers.CountriesController.loadCountries(CountriesController.java:121) 
at com.myPackage.views.fragments.ChatFragment.onCreateView(ChatFragment.java:57) 
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:829) 
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1035) 
at android.app.BackStackRecord.run(BackStackRecord.java:635) 
at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1397) 
at android.app.Activity.performStart(Activity.java:5017) 
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2032) 
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084) 
at android.app.ActivityThread.access$600(ActivityThread.java:130) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195) 
at android.os.Handler.dispatchMessage(Handler.java:99) 
at android.os.Looper.loop(Looper.java:137) 
at android.app.ActivityThread.main(ActivityThread.java:4745) 
at java.lang.reflect.Method.invokeNative(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:511) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 
at dalvik.system.NativeStart.main(Native Method) 

我在课堂上并没有真正改变任何东西，这让我感到困惑。

在我的build.gradle中，我编译了'io.reactivex:rxandroid:1.2.1‘编译'io.reactivex:rxjava:1.1.6’

在我的可观察性中，我使用okHttp发送http请求，抛出异常的确切行是

subscribeOn(Schedulers.newThread()).observeOn(AndroidSchedulers.mainThread());

我需要任何建议^，如果你有什么问题，请告诉我。

如果可能的话，有人能解释一下那次坠机意味着什么吗？谢谢。

my build.gradle有

    compile 'io.reactivex:rxandroid:1.2.1'
// Because RxAndroid releases are few and far between, it is recommended you also
// explicitly depend on RxJava's latest version for bug fixes and new features.
    compile 'io.reactivex:rxjava:1.1.6'
    compile 'com.jakewharton.rxbinding:rxbinding-support-v4:0.4.0'
    compile 'com.trello:rxlifecycle:0.6.1'
// If you want pre-written Activities and Fragments you can subclass as providers
    compile 'com.trello:rxlifecycle-components:0.6.1'

    compile 'com.mlsdev.rximagepicker:library:1.1.9'
    compile 'com.github.zellius:rxlocationmanager:0.1.1'
    compile 'com.sdoward:rxgooglemaps:1.0@aar'

Answer 1

当构建工具和/或热交换在更改依赖项后无法更新时，通常会发生NoClassDefFoundError。

尝试一个Build > Clean Project，然后再运行。

Answer 2

如果您正在使用multidex，那么也可能会出现此问题。但在低端版本的手机里。

你所需要做的就是遵循这里给出的程序：

https://stackoverflow.com/a/26627133/842607

Answer 3

好吧，我可以解释我是怎么补救的，希望这能帮到别人。我尝试了几次清理>重建，删除了安装在c:users\userName.gradle\caches\modules\files-2.1，中的库，然后尝试检查依赖项是否存在重复(有些库可以在内部包含)，并且我总是清理和重建。最后，我重新下载了整个Android环境。

然而，出于某种原因，我记得我没有应用多重索引，我做了它，它成功了，这对我是有效的。但我还是不明白为什么，因为它在不同的pc上工作，没有多重索引。