请教：Android java.lang.NoClassDefFoundError:

Question

请教各位，升级Android Studio 后代码在8.0 上的版本运行无误，7.0的版本就报 java.lang.NoClassDefFoundError错误， 引用的库 Xutils报类似错误，替换为ButterKnife，问题消失，但是Eventbus还是报这个问题，注释掉Eventbus可以运行， 请教各位，是否有遇到类似问题，烦请告知解决方法 java.lang.NoClassDefFoundError: android.app.admin.ConnectEvent         at libcore.reflect.InternalNames.getClass(InternalNames.java:55)         at java.lang.Class.getDexCacheType(Class.java:2551)         at java.lang.reflect.AbstractMethod.getParameterTypes(AbstractMethod.java:169)         at java.lang.reflect.Method.getParameterTypes(Method.java:193)         at org.greenrobot.eventbus.SubscriberMethodFinder.findUsingReflectionInSingleClass(SubscriberMethodFinder.java:163)         at org.greenrobot.eventbus.SubscriberMethodFinder.findUsingInfo(SubscriberMethodFinder.java:88)         at org.greenrobot.eventbus.SubscriberMethodFinder.findSubscriberMethods(SubscriberMethodFinder.java:64)         at org.greenrobot.eventbus.EventBus.register(EventBus.java:136)         at com.iotcnn.patrolclient.base.BaseActivity.onStart(BaseActivity.java:118)         at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1254)         at android.app.Activity.performStart(Activity.java:6930)         at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2767)         at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2875)         at android.app.ActivityThread.-wrap12(ActivityThread.java)         at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1578)         at android.os.Handler.dispatchMessage(Handler.java:105)         at android.os.Looper.loop(Looper.java:156)         at android.app.ActivityThread.main(ActivityThread.java:6617)         at java.lang.reflect.Method.invoke(Native Method)         at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:942)         at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:832)      Caused by: java.lang.ClassNotFoundException: Didn't find class "android.app.admin.ConnectEvent" on path: DexPathList[[zip file "/data/app/com.iotcnn.patrolclient-2/base.apk"],nativeLibraryDirectories=[/data/app/com.iotcnn.patrolclient-2b/arm64, /systemb64, endorb64, /systemendorb64, /productb64]]         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 libcore.reflect.InternalNames.getClass(InternalNames.java:53)         at java.lang.Class.getDexCacheType(Class.java:2551)          at java.lang.reflect.AbstractMethod.getParameterTypes(AbstractMethod.java:169)          at java.lang.reflect.Method.getParameterTypes(Method.java:193)          at org.greenrobot.eventbus.SubscriberMethodFinder.findUsingReflectionInSingleClass(SubscriberMethodFinder.java:163)          at org.greenrobot.eventbus.SubscriberMethodFinder.findUsingInfo(SubscriberMethodFinder.java:88)          at org.greenrobot.eventbus.SubscriberMethodFinder.findSubscriberMethods(SubscriberMethodFinder.java:64)          at org.greenrobot.eventbus.EventBus.register(EventBus.java:136)          at com.iotcnn.patrolclient.base.BaseActivity.onStart(BaseActivity.java:118)          at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1254)          at android.app.Activity.performStart(Activity.java:6930)          at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2767)          at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2875)          at android.app.ActivityThread.-wrap12(ActivityThread.java)          at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1578)          at android.os.Handler.dispatchMessage(Handler.java:105)          at android.os.Looper.loop(Looper.java:156)          at android.app.ActivityThread.main(ActivityThread.java:6617)          at java.lang.reflect.Method.invoke(Native Method)          at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:942)          at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:832)