請教各位，升級Android?Studio?后代碼在8.0?上的版本運行無誤，7.0的版本就報?java.lang.NoClassDefFoundError錯誤， 引用的庫?Xutils報類似錯誤，替換為ButterKnife，問題消失，但是Eventbus還是報這個問題，注釋掉Eventbus可以運行， 請教各位，是否有遇到類似問題，煩請告知解決方法?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)