报错： Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available

[liyujiang-gzu]

androidx.plmgrdemo E/AndroidRuntime: FATAL EXCEPTION: main
                                                                    Process: androidx.plmgrdemo, PID: 17286
                                                                    java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{androidx.plmgrdemo/androidx.pluginmgr.DynamicActivity}: java.lang.ClassNotFoundException: Didn't find class "cn.qqtheme.demo.activity.WelcomeActivity" on path: DexPathList[[zip file "/data/data/androidx.plmgrdemo/app_plugins-opt/Demo  3.0.0-dev.apk"],nativeLibraryDirectories=[/data/data/androidx.plmgrdemo/app_plugins-opt/Demo  3.0.0-dev.apk-dir/lib, /vendor/lib64, /system/lib64]]
                                                                        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2466)
                                                                        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2635)
                                                                        at android.app.ActivityThread.access$800(ActivityThread.java:188)
                                                                        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1480)
                                                                        at android.os.Handler.dispatchMessage(Handler.java:111)
                                                                        at android.os.Looper.loop(Looper.java:194)
                                                                        at android.app.ActivityThread.main(ActivityThread.java:5739)
                                                                        at java.lang.reflect.Method.invoke(Native Method)
                                                                        at java.lang.reflect.Method.invoke(Method.java:372)
                                                                        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1039)
                                                                        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:834)
                                                                     Caused by: java.lang.ClassNotFoundException: Didn't find class "cn.qqtheme.demo.activity.WelcomeActivity" on path: DexPathList[[zip file "/data/data/androidx.plmgrdemo/app_plugins-opt/Demo  3.0.0-dev.apk"],nativeLibraryDirectories=[/data/data/androidx.plmgrdemo/app_plugins-opt/Demo  3.0.0-dev.apk-dir/lib, /vendor/lib64, /system/lib64]]
                                                                        at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
                                                                        at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
                                                                        at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
                                                                        at android.app.Instrumentation.newActivity(Instrumentation.java:1071)
                                                                        at androidx.pluginmgr.delegate.DelegateInstrumentation.newActivity(DelegateInstrumentation.java:235)
                                                                        at androidx.pluginmgr.environment.PluginInstrumentation.newActivity(PluginInstrumentation.java:74)
                                                                        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2443)
                                                                        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2635) 
                                                                        at android.app.ActivityThread.access$800(ActivityThread.java:188) 
                                                                        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1480) 
                                                                        at android.os.Handler.dispatchMessage(Handler.java:111) 
                                                                        at android.os.Looper.loop(Looper.java:194) 
                                                                        at android.app.ActivityThread.main(ActivityThread.java:5739) 
                                                                        at java.lang.reflect.Method.invoke(Native Method) 
                                                                        at java.lang.reflect.Method.invoke(Method.java:372) 
                                                                        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1039) 
                                                                        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:834) 
                                                                        Suppressed: java.lang.ClassNotFoundException: cn.qqtheme.demo.activity.WelcomeActivity
                                                                        at java.lang.Class.classForName(Native Method)
                                                                        at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
                                                                        at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
                                                                        at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
                                                                                ... 15 more
                                                                     Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available