我的应用程序从Activity**_ A _**开始，其中包含如下初始化的FragmentContainer

<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/mainView"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <androidx.fragment.app.FragmentContainerView
        android:id="@+id/register_nav_host_fragment"
        android:name="androidx.navigation.fragment.NavHostFragment"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:defaultNavHost="true"
        tools:layout="@layout/fragment_login"
        tools:ignore="FragmentTagUsage" />
</androidx.constraintlayout.widget.ConstraintLayout>

private var navHostFragment: NavHostFragment? = null
    private var navController: NavController? = null
    private fun setNavGraph() {
        navHostFragment = supportFragmentManager.findFragmentById(R.id.register_nav_host_fragment) as NavHostFragment            
        navController = navHostFragment?.navController
        val graph = navController?.navInflater?.inflate(R.navigation.registration_process_graph)
        navController?.setGraph(graph !!, intent.extras)
 
    }

现在，当我尝试以root身份打开新活动时，出现内存泄漏
一个二个一个一个
请注意，在移动到DashboardActivity之前，我已尝试删除所有子视图并清除Activity _A_的局部变量，如下所示

navHostFragment = null
        navController = null
         val navView = findViewById<FrameLayout>(R.id.register_nav_host_fragment)
        (navView.parent as ViewManager).removeView(navView)