android bugly void android.view.View.unFocus

Question

项目上线后bugly中出现的奇怪bug :
#30018 java.lang.NullPointerException
Attempt to invoke virtual method 'void android.view.View.unFocus(android.view.View)' on a null object reference

android.view.ViewGroup.removeViewInternal(ViewGroup.java:5583)

1
android.view.ViewGroup.removeViewInternal(ViewGroup.java:5554)
2
android.view.ViewGroup.removeViewAt(ViewGroup.java:5517)
3
androidx.fragment.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManagerImpl.java:1250)
4
androidx.fragment.app.BackStackRecord.executeOps(BackStackRecord.java:434)
5
androidx.fragment.app.FragmentManagerImpl.executeOps(FragmentManagerImpl.java:2079)
6
androidx.fragment.app.FragmentManagerImpl.executeOpsTogether(FragmentManagerImpl.java:1869)
7
androidx.fragment.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManagerImpl.java:1824)
8
androidx.fragment.app.FragmentManagerImpl.execPendingActions(FragmentManagerImpl.java:1727)
9
androidx.fragment.app.FragmentManagerImpl.dispatchStateChange(FragmentManagerImpl.java:2663)
10
androidx.fragment.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManagerImpl.java:2613)
11
androidx.fragment.app.FragmentController.dispatchActivityCreated(FragmentController.java:246)
12
androidx.fragment.app.FragmentActivity.onStart(FragmentActivity.java:542)
13
androidx.appcompat.app.AppCompatActivity.onStart(AppCompatActivity.java:210)
14
android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1432)
15
android.app.Activity.performStart(Activity.java:7923)
16
android.app.ActivityThread.handleStartActivity(ActivityThread.java:3364)
17
android.app.servertransaction.TransactionExecutor.performLifecycleSequence(TransactionExecutor.java:221)
18
android.app.servertransaction.TransactionExecutor.cycleToPath(TransactionExecutor.java:201)
19
android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:173)
20
android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97)
21
android.app.ActivityThread$H.handleMessage(ActivityThread.java:2073)
22
android.os.Handler.dispatchMessage(Handler.java:107)
23
android.os.Looper.loop(Looper.java:225)
24
android.app.ActivityThread.main(ActivityThread.java:7563)
25
java.lang.reflect.Method.invoke(Native Method)
26
com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)
27
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:994)

Answer 1

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