android - 使用 Jetpack Navigation 时 Compose Fragment 崩溃应用程序

Question

我目前在 Jetpack Compose 中遇到了一个非常奇怪的问题。我正在使用导航组件库(在 NavHostFragment 中托管 fragment )。一些较新的 Fragment 已经在使用 Compose，但我在极少数情况下会遇到这种崩溃。通常在使用抽屉导航导航到设置页面并单击底部导航 View 中的项目时。我目前正在使用 Jetpack Compose alpha-12 和 Navigation 2.3.0。
(使用普通 ViewBinding 时不会崩溃)
https://youtu.be/__pdZmApEfE

@AndroidEntryPoint
class StatisticsFragment : Fragment() {

  override fun onCreateView(
    inflater: LayoutInflater,
    container: ViewGroup?,
    savedInstanceState: Bundle?
  ): View {
    return ComposeView(requireContext()).apply {
      setContent {
        TemporyTheme {
          Text("Hello Compose!")
        }
      }
    }
  }
}

<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.widget.DrawerLayout
    ...>

    <RelativeLayout
        ...>

        <RelativeLayout
            ...>

            <com.google.android.material.appbar.MaterialToolbar
                ... />

        </RelativeLayout>

        <!-- NavHost -->
        <androidx.fragment.app.FragmentContainerView
            android:id="@+id/nav_host_fragment"
            android:name="androidx.navigation.fragment.NavHostFragment"
            app:defaultNavHost="true"
            app:navGraph="@navigation/navigation_main"
            ... />

        <com.google.android.material.bottomnavigation.BottomNavigationView
            ... />

    </RelativeLayout>

    <com.google.android.material.navigation.NavigationView
        .../>

</androidx.drawerlayout.widget.DrawerLayout>

java.lang.NullPointerException: Attempt to invoke interface method 'void androidx.compose.runtime.MutableState.setValue(java.lang.Object)' on a null object reference
        at androidx.compose.ui.platform.AndroidComposeView.setLayoutDirection(AndroidComposeView.kt:797)
        at androidx.compose.ui.platform.AndroidComposeView.onRtlPropertiesChanged(AndroidComposeView.kt:724)
        at android.view.View.resolvePadding(View.java:20272)
        at android.view.ViewGroup.resolvePadding(ViewGroup.java:7765)
        at android.view.View.initializeScrollbarsInternal(View.java:6781)
        at android.view.View.<init>(View.java:6112)
        at android.view.ViewGroup.<init>(ViewGroup.java:697)
        at android.view.ViewGroup.<init>(ViewGroup.java:693)
        at android.view.ViewGroup.<init>(ViewGroup.java:689)
        at android.view.ViewGroup.<init>(ViewGroup.java:685)
        at androidx.compose.ui.platform.AndroidComposeView.<init>(AndroidComposeView.kt:116)
        at androidx.compose.ui.platform.WrapperKt.setContent(Wrapper.kt:123)
        at androidx.compose.ui.platform.AbstractComposeView.ensureCompositionCreated(ComposeView.kt:183)
        at androidx.compose.ui.platform.AbstractComposeView.onAttachedToWindow(ComposeView.kt:215)
        at android.view.View.dispatchAttachedToWindow(View.java:20479)
        at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3489)
        at android.view.ViewGroup.addViewInner(ViewGroup.java:5278)
        at android.view.ViewGroup.addView(ViewGroup.java:5064)
        at androidx.fragment.app.FragmentContainerView.addView(FragmentContainerView.java:290)
        at android.view.ViewGroup.addView(ViewGroup.java:5004)
        at androidx.fragment.app.FragmentStateManager.addViewToContainer(FragmentStateManager.java:830)
        at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:520)
        at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:282)
        at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2177)
        at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:2094)
        at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:1990)
        at androidx.fragment.app.FragmentManager$5.run(FragmentManager.java:524)
        at android.os.Handler.handleCallback(Handler.java:938)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:223)
        at android.app.ActivityThread.main(ActivityThread.java:7660)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)

Answer 1

该错误随着 compose 的 beta 06 消失了