Android:存在类时出现ClassNotFoundException [英] Android: ClassNotFoundException while class is present

问题描述

E/AndroidRuntime: FATAL EXCEPTION: main
 Process: be.kdg.examen, PID: 4451
 java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{be.kdg.examen/be.kdg.examen.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "be.kdg.examen.MainActivity" on path: DexPathList[[zip file "/data/app/be.kdg.examen-1/base.apk"],nativeLibraryDirectories=[/data/app/be.kdg.examen-1/lib/x86, /system/lib, /vendor/lib]]
     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2567)
     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
     at android.app.ActivityThread.-wrap12(ActivityThread.java)
     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
     at android.os.Handler.dispatchMessage(Handler.java:102)
     at android.os.Looper.loop(Looper.java:154)
     at android.app.ActivityThread.main(ActivityThread.java:6119)
     at java.lang.reflect.Method.invoke(Native Method)
     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
  Caused by: java.lang.ClassNotFoundException: Didn't find class "be.kdg.examen.MainActivity" on path: DexPathList[[zip file "/data/app/be.kdg.examen-1/base.apk"],nativeLibraryDirectories=[/data/app/be.kdg.examen-1/lib/x86, /system/lib, /vendor/lib]]
     at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:380)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
     at android.app.Instrumentation.newActivity(Instrumentation.java:1078)
     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2557)
     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726) 
     at android.app.ActivityThread.-wrap12(ActivityThread.java) 
     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477) 
     at android.os.Handler.dispatchMessage(Handler.java:102) 
     at android.os.Looper.loop(Looper.java:154) 
     at android.app.ActivityThread.main(ActivityThread.java:6119) 
     at java.lang.reflect.Method.invoke(Native Method) 
     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886) 
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776) 

在尝试运行应用程序时，我总是会收到此错误.有一个MainActivity，所以我真的不知道问题出在哪里.

I always get this error while trying to run the application. There is a MainActivity so I really don't know what the problem is.

推荐答案

multidex支持似乎是一个问题.请查看以下线程

This seems to be a problem with the multidex support. Please see the following thread

致命异常:main java.lang .NoClassDefFoundError:rx.plugins.RxJavaHooks

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