当屏幕旋转时，在调用onCreate（）及其超级方法：super.onCreate（savedInstanceState）;时，将出现此异常。
它似乎与此线程相关或相同：为什么当我更改屏幕方向时会出现ClassNotFoundException？ 但不幸的是，建议的解决方案不起作用。删除AdView不会更改任何内容。
这是完整的堆栈：
E/Parcel: Class not found when unmarshalling: androidx.fragment.app.FragmentManagerState
java.lang.ClassNotFoundException: androidx.fragment.app.FragmentManagerState
at java.lang.Class.classForName(Native Method)
at java.lang.Class.forName(Class.java:453)
at android.os.Parcel.readParcelableCreator(Parcel.java:2827)
at android.os.Parcel.readParcelable(Parcel.java:2781)
at android.os.Parcel.readValue(Parcel.java:2684)
at android.os.Parcel.readArrayMapInternal(Parcel.java:3053)
at android.os.BaseBundle.initializeFromParcelLocked(BaseBundle.java:288)
at android.os.BaseBundle.unparcel(BaseBundle.java:232)
at android.os.Bundle.getBundle(Bundle.java:917)
at gh.onActivityCreated(:com.google.android.gms.dynamite_measurementdynamite@17122081@17.1.22 (100400-245988633):32)
at com.google.android.gms.measurement.internal.AppMeasurementDynamiteService.onActivityCreated(:com.google.android.gms.dynamite_measurementdynamite@17122081@17.1.22 (100400-245988633):88)
at cp.a(:com.google.android.gms.dynamite_measurementdynamite@17122081@17.1.22 (100400-245988633):169)
at j.onTransact(:com.google.android.gms.dynamite_measurementdynamite@17122081@17.1.22 (100400-245988633):4)
at android.os.Binder.transact(Binder.java:675)
at com.google.android.gms.internal.measurement.zzq.zza(Unknown Source:20)
at com.google.android.gms.internal.measurement.zzdp.onActivityCreated(Unknown Source:144)
at com.google.android.gms.internal.measurement.zzex.zzgd(Unknown Source:4)
at com.google.android.gms.internal.measurement.zzea$zzb.run(Unknown Source:11)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:764)
Caused by: java.lang.ClassNotFoundException: androidx.fragment.app.FragmentManagerState
at java.lang.Class.classForName(Native Method)
at java.lang.BootClassLoader.findClass(ClassLoader.java:1346)
at java.lang.BootClassLoader.loadClass(ClassLoader.java:1406)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
at java.lang.Class.classForName(Native …