android - 为什么我在Android中“无法暂停 Activity IllegalStateException:必须仅在所有者的初始化阶段创建Restarter”？

Question

我正在使用一个片段活动，有时在crashlytics上，我可以看到一个异常
致命异常：java.lang.RuntimeException:无法暂停活动
下面是我碎片活动的暂停

@Override
protected void onPause() {
    super.onPause();
    if (EventBus.getDefault().isRegistered(this))
        EventBus.getDefault().unregister(this);
}

这是这个崩溃的堆栈跟踪。

Fatal Exception: java.lang.RuntimeException: Unable to pause activity {com.avail.easyloans.android/com.avail.easyloans.feature.marketplace.activities.ActivityMarketplace}: java.lang.IllegalStateException: Restarter must be created only during owner's initialization stage
       at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3471)
       at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3430)
       at android.app.ActivityThread.handlePauseActivity(ActivityThread.java:3402)
       at android.app.ActivityThread.access$1300(ActivityThread.java:151)
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1416)
       at android.os.Handler.dispatchMessage(Handler.java:102)
       at android.os.Looper.loop(Looper.java:157)
       at android.app.ActivityThread.main(ActivityThread.java:5601)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:774)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:652)

Caused by java.lang.IllegalStateException: Restarter must be created only during owner's initialization stage
       at androidx.savedstate.SavedStateRegistryController.performRestore(SavedStateRegistryController.java:59)
       at androidx.fragment.app.Fragment.performCreate(Fragment.java:2522)
       at androidx.fragment.app.FragmentManagerImpl.moveToState(FragmentManagerImpl.java:834)
       at androidx.fragment.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManagerImpl.java:1227)
       at androidx.fragment.app.FragmentManagerImpl.moveToState(FragmentManagerImpl.java:1293)
       at androidx.fragment.app.FragmentManagerImpl.dispatchStateChange(FragmentManagerImpl.java:2612)
       at androidx.fragment.app.FragmentManagerImpl.dispatchPause(FragmentManagerImpl.java:2588)
       at androidx.fragment.app.FragmentController.dispatchPause(FragmentController.java:279)
       at androidx.fragment.app.FragmentActivity.onPause(FragmentActivity.java:406)
       at com.avail.easyloans.feature.marketplace.activities.ActivityMarketplace.onPause(ActivityMarketplace.java:351)
       at android.app.Activity.performPause(Activity.java:6467)
       at android.app.Instrumentation.callActivityOnPause(Instrumentation.java:1312)
       at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3457)
       at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3430)
       at android.app.ActivityThread.handlePauseActivity(ActivityThread.java:3402)
       at android.app.ActivityThread.access$1300(ActivityThread.java:151)
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1416)
       at android.os.Handler.dispatchMessage(Handler.java:102)
       at android.os.Looper.loop(Looper.java:157)
       at android.app.ActivityThread.main(ActivityThread.java:5601)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:774)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:652)

这背后可能的原因是什么？我如何解决这个问题？
*我不能复制这个虫子。

Answer 1

如果在活动中使用fragmnet，则需要删除“开始”活动中活动的所有片段。

 override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main_root)

        while (supportFragmentManager.backStackEntryCount > 0) {
            supportFragmentManager.popBackStackImmediate()
        }

}

您可以在“设置”->“开发人员选项”->“不保留活动”中打开来进行检查