已发布的 C# MAUI 应用程序提供的 Java 调用堆栈

Question

我创建了一个 C# MAUI 应用程序，并上传到 Google Play 商店。

崩溃
没有问题的设备 4
有问题的设备 2

有问题的设备
通用小型桌面 (x86) (SmallDesktop.x86) - Android 12L
谷歌 Pixel 5（红鳍）- Android 11

例外情况
java.lang.IllegalStateException：指定的子级已经有父级。您必须首先在子级的父级上调用removeView()。
java.lang.IllegalStateException：指定的子级已经有父级。您必须首先在子级的父级上调用removeView()。

我收到以下崩溃报告：

Type: Java.Lang.IllegalStateException
Message: The specified child already has a parent. You must call removeView() on the child's parent first.
StackTrace:    at Java.Interop.JniEnvironment.InstanceMethods.CallNonvirtualVoidMethod(JniObjectReference , JniObjectReference , JniMethodInfo , JniArgumentValue* )
   at Java.Interop.JniPeerMembers.JniInstanceMethods.InvokeVirtualVoidMethod(String , IJavaPeerable , JniArgumentValue* )
   at Android.Views.ViewGroup.AddView(View , Int32 )
   at Microsoft.Maui.Controls.Handlers.Compatibility.ListViewAdapter.GetView(Int32 position, View convertView, ViewGroup parent)
   at Android.Widget.BaseAdapter.n_GetView_ILandroid_view_View_Landroid_view_ViewGroup_(IntPtr jnienv, IntPtr native__this, Int32 position, IntPtr native_convertView, IntPtr native_parent)
   at Android.Runtime.DynamicMethodNameCounter.6(IntPtr , IntPtr , Int32 , IntPtr , IntPtr )
--- End of stack trace from previous location ---
   at Java.Interop.JniEnvironment.InstanceMethods.CallNonvirtualVoidMethod(JniObjectReference , JniObjectReference , JniMethodInfo , JniArgumentValue* )
   at Java.Interop.JniPeerMembers.JniInstanceMethods.InvokeNonvirtualVoidMethod(String , IJavaPeerable , JniArgumentValue* )
   at Android.Views.ViewGroup.Layout(Int32 , Int32 , Int32 , Int32 )
   at Microsoft.Maui.Controls.Handlers.Compatibility.VisualElementRenderer`1[[Microsoft.Maui.Controls.ListView, Microsoft.Maui.Controls, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].OnLayout(Boolean changed, Int32 l, Int32 t, Int32 r, Int32 b)
   at Microsoft.Maui.Controls.Handlers.Compatibility.ListViewRenderer.OnLayout(Boolean changed, Int32 l, Int32 t, Int32 r, Int32 b)
   at Android.Views.ViewGroup.n_OnLayout_ZIIII(IntPtr jnienv, IntPtr native__this, Boolean changed, Int32 l, Int32 t, Int32 r, Int32 b)
   at Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PPZIIII_V(_JniMarshal_PPZIIII_V callback, IntPtr jnienv, IntPtr klazz, Boolean p0, Int32 p1, Int32 p2, Int32 p3, Int32 p4)
--- End of stack trace from previous location ---
   at Java.Interop.JniEnvironment.InstanceMethods.CallNonvirtualVoidMethod(JniObjectReference , JniObjectReference , JniMethodInfo , JniArgumentValue* )
   at Java.Interop.JniPeerMembers.JniInstanceMethods.InvokeNonvirtualVoidMethod(String , IJavaPeerable , JniArgumentValue* )
   at Android.Views.ViewGroup.Layout(Int32 , Int32 , Int32 , Int32 )
   at Microsoft.Maui.ViewHandlerExtensions.PlatformArrangeHandler(IViewHandler viewHandler, Rect frame)
   at Microsoft.Maui.Controls.Handlers.Compatibility.VisualElementRenderer`1[[Microsoft.Maui.Controls.ListView, Microsoft.Maui.Controls, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].Microsoft.Maui.IViewHandler.PlatformArrange(Rect rect)
   at Microsoft.Maui.Controls.VisualElement.ArrangeOverride(Rect bounds)
   at Microsoft.Maui.Controls.VisualElement.Microsoft.Maui.IView.Arrange(Rect bounds)
   at Microsoft.Maui.Layouts.LayoutExtensions.ArrangeContent(IContentView contentView, Rect bounds)
   at Microsoft.Maui.Layouts.LayoutExtensions.ArrangeContentUnbounded(IContentView contentView, Rect bounds)
   at Microsoft.Maui.Controls.ScrollView.Microsoft.Maui.ICrossPlatformLayout.CrossPlatformArrange(Rect bounds)
   at Microsoft.Maui.Handlers.ScrollViewHandler.Microsoft.Maui.ICrossPlatformLayout.CrossPlatformArrange(Rect bounds)
   at Microsoft.Maui.Platform.ContentViewGroup.CrossPlatformArrange(Rect bounds)
   at Microsoft.Maui.Platform.ContentViewGroup.OnLayout(Boolean changed, Int32 left, Int32 top, Int32 right, Int32 bottom)
   at Android.Views.ViewGroup.n_OnLayout_ZIIII(IntPtr jnienv, IntPtr native__this, Boolean changed, Int32 l, Int32 t, Int32 r, Int32 b)
   at Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PPZIIII_V(_JniMarshal_PPZIIII_V callback, IntPtr jnienv, IntPtr klazz, Boolean p0, Int32 p1, Int32 p2, Int32 p3, Int32 p4)
--- End of stack trace from previous location ---
   at Java.Interop.JniEnvironment.InstanceMethods.CallNonvirtualVoidMethod(JniObjectReference , JniObjectReference , JniMethodInfo , JniArgumentValue* )
   at Java.Interop.JniPeerMembers.JniInstanceMethods.InvokeVirtualVoidMethod(String , IJavaPeerable , JniArgumentValue* )
   at Android.Widget.FrameLayout.OnLayout(Boolean , Int32 , Int32 , Int32 , Int32 )
   at Microsoft.Maui.Platform.MauiScrollView.OnLayout(Boolean changed, Int32 left, Int32 top, Int32 right, Int32 bottom)
   at Android.Widget.FrameLayout.n_OnLayout_ZIIII(IntPtr jnienv, IntPtr native__this, Boolean changed, Int32 left, Int32 top, Int32 right, Int32 bottom)
   at Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PPZIIII_V(_JniMarshal_PPZIIII_V callback, IntPtr jnienv, IntPtr klazz, Boolean p0, Int32 p1, Int32 p2, Int32 p3, Int32 p4)
--- End of stack trace from previous location ---
   at Java.Interop.JniEnvironment.InstanceMethods.CallNonvirtualVoidMethod(JniObjectReference , JniObjectReference , JniMethodInfo , JniArgumentValue* )
   at Java.Interop.JniPeerMembers.JniInstanceMethods.InvokeNonvirtualVoidMethod(String , IJavaPeerable , JniArgumentValue* )
   at Android.Views.ViewGroup.Layout(Int32 , Int32 , Int32 , Int32 )
   at Microsoft.Maui.ViewHandlerExtensions.PlatformArrangeHandler(IViewHandler viewHandler, Rect frame)
   at Microsoft.Maui.Handlers.ViewHandler`2[[Microsoft.Maui.IScrollView, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[Microsoft.Maui.Platform.MauiScrollView, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].PlatformArrange(Rect frame)
   at Microsoft.Maui.Controls.ScrollView.ArrangeOverride(Rect bounds)
   at Microsoft.Maui.Controls.VisualElement.Microsoft.Maui.IView.Arrange(Rect bounds)
   at Microsoft.Maui.Layouts.LayoutExtensions.ArrangeContent(IContentView contentView, Rect bounds)
   at Microsoft.Maui.Controls.Border.CrossPlatformArrange(Rect bounds)
   at Microsoft.Maui.Platform.ContentViewGroup.CrossPlatformArrange(Rect bounds)
   at Microsoft.Maui.Platform.ContentViewGroup.OnLayout(Boolean changed, Int32 left, Int32 top, Int32 right, Int32 bottom)
   at Android.Views.ViewGroup.n_OnLayout_ZIIII(IntPtr jnienv, IntPtr native__this, Boolean changed, Int32 l, Int32 t, Int32 r, Int32 b)
   at Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PPZIIII_V(_JniMarshal_PPZIIII_V callback, IntPtr jnienv, IntPtr klazz, Boolean p0, Int32 p1, Int32 p2, Int32 p3, Int32 p4)
--- End of stack trace from previous location ---
   at Java.Interop.JniEnvironment.InstanceMethods.CallNonvirtualVoidMethod(JniObjectReference , JniObjectReference , JniMethodInfo , JniArgumentValue* )
   at Java.Interop.JniPeerMembers.JniInstanceMethods.InvokeNonvirtualVoidMethod(String , IJavaPeerable , JniArgumentValue* )
   at Android.Views.ViewGroup.Layout(Int32 , Int32 , Int32 , Int32 )
   at Microsoft.Maui.ViewHandlerExtensions.PlatformArrangeHandler(IViewHandler viewHandler, Rect frame)
   at Microsoft.Maui.Handlers.ViewHandler`2[[Microsoft.Maui.IBorderView, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[Microsoft.Maui.Platform.ContentViewGroup, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].PlatformArrange(Rect frame)
   at Microsoft.Maui.Controls.VisualElement.ArrangeOverride(Rect bounds)
   at Microsoft.Maui.Controls.VisualElement.Microsoft.Maui.IView.Arrange(Rect bounds)
   at Microsoft.Maui.Layouts.GridLayoutManager.ArrangeChildren(Rect bounds)
   at Microsoft.Maui.Controls.Layout.CrossPlatformArrange(Rect bounds)
   at Microsoft.Maui.Platform.LayoutViewGroup.CrossPlatformArrange(Rect bounds)
   at Microsoft.Maui.Platform.LayoutViewGroup.OnLayout(Boolean changed, Int32 l, Int32 t, Int32 r, Int32 b)
   at Android.Views.ViewGroup.n_OnLayout_ZIIII(IntPtr jnienv, IntPtr native__this, Boolean changed, Int32 l, Int32 t, Int32 r, Int32 b)
   at Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PPZIIII_V(_JniMarshal_PPZIIII_V callback, IntPtr jnienv, IntPtr klazz, Boolean p0, Int32 p1, Int32 p2, Int32 p3, Int32 p4)
--- End of stack trace from previous location ---
   at Java.Interop.JniEnvironment.InstanceMethods.CallNonvirtualVoidMethod(JniObjectReference , JniObjectReference , JniMethodInfo , JniArgumentValue* )
   at Java.Interop.JniPeerMembers.JniInstanceMethods.InvokeNonvirtualVoidMethod(String , IJavaPeerable , JniArgumentValue* )
   at Android.Views.ViewGroup.Layout(Int32 , Int32 , Int32 , Int32 )
   at Microsoft.Maui.ViewHandlerExtensions.PlatformArrangeHandler(IViewHandler viewHandler, Rect frame)
   at Microsoft.Maui.Handlers.ViewHandler`2[[Microsoft.Maui.ILayout, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[Microsoft.Maui.Platform.LayoutViewGroup, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].PlatformArrange(Rect frame)
   at Microsoft.Maui.Controls.VisualElement.ArrangeOverride(Rect bounds)
   at Microsoft.Maui.Controls.VisualElement.Microsoft.Maui.IView.Arrange(Rect bounds)
   at Microsoft.Maui.Controls.Compatibility.Layout.LayoutChildIntoBoundingRegion(VisualElement child, Rect region)
   at Microsoft.Maui.Controls.Page.LayoutChildren(Double x, Double y, Double width, Double height)
   at Microsoft.Maui.Controls.Page.UpdateChildrenLayout()
   at Microsoft.Maui.Controls.Page.OnSizeAllocated(Double width, Double height)
   at Microsoft.Maui.Controls.VisualElement.SizeAllocated(Double width, Double height)
   at Microsoft.Maui.Controls.VisualElement.UpdateBoundsComponents(Rect bounds)
   at Microsoft.Maui.Controls.VisualElement.set_Frame(Rect value)
   at Microsoft.Maui.Controls.ContentPage.Microsoft.Maui.ICrossPlatformLayout.CrossPlatformArrange(Rect bounds)
   at Microsoft.Maui.Platform.ContentViewGroup.CrossPlatformArrange(Rect bounds)
   at Microsoft.Maui.Platform.ContentViewGroup.OnLayout(Boolean changed, Int32 left, Int32 top, Int32 right, Int32 bottom)
   at Android.Views.ViewGroup.n_OnLayout_ZIIII(IntPtr jnienv, IntPtr native__this, Boolean changed, Int32 l, Int32 t, Int32 r, Int32 b)
   at Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PPZIIII_V(_JniMarshal_PPZIIII_V callback, IntPtr jnienv, IntPtr klazz, Boolean p0, Int32 p1, Int32 p2, Int32 p3, Int32 p4)
--- End of stack trace from previous location ---
   at Java.Interop.JniEnvironment.InstanceMethods.CallNonvirtualVoidMethod(JniObjectReference , JniObjectReference , JniMethodInfo , JniArgumentValue* )
   at Java.Interop.JniPeerMembers.JniInstanceMethods.InvokeNonvirtualVoidMethod(String , IJavaPeerable , JniArgumentValue* )
   at Android.Views.ViewGroup.Layout(Int32 , Int32 , Int32 , Int32 )
   at Microsoft.Maui.Controls.Platform.Compatibility.ShellPageContainer.OnLayout(Boolean changed, Int32 l, Int32 t, Int32 r, Int32 b)
   at Android.Views.ViewGroup.n_OnLayout_ZIIII(IntPtr jnienv, IntPtr native__this, Boolean changed, Int32 l, Int32 t, Int32 r, Int32 b)
   at Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PPZIIII_V(_JniMarshal_PPZIIII_V callback, IntPtr jnienv, IntPtr klazz, Boolean p0, Int32 p1, Int32 p2, Int32 p3, Int32 p4)
  --- End of managed Java.Lang.IllegalStateException stack trace ---
java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
    at android.view.ViewGroup.addViewInner(ViewGroup.java:5247)
    at android.view.ViewGroup.addView(ViewGroup.java:5076)
    at android.view.ViewGroup.addView(ViewGroup.java:5016)
    at crc64e1fb321c08285b90.ListViewAdapter.n_getView(Native Method)
    at crc64e1fb321c08285b90.ListViewAdapter.getView(ListViewAdapter.java:102)
    at android.widget.HeaderViewListAdapter.getView(HeaderViewListAdapter.java:224)
    at android.widget.AbsListView.obtainView(AbsListView.java:2398)
    at android.widget.ListView.makeAndAddView(ListView.java:2067)
    at android.widget.ListView.fillDown(ListView.java:793)
    at android.widget.ListView.fillFromTop(ListView.java:855)
    at android.widget.ListView.layoutChildren(ListView.java:1838)
    at android.widget.AbsListView.onLayout(AbsListView.java:2195)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at androidx.swiperefreshlayout.widget.SwipeRefreshLayout.onLayout(SwipeRefreshLayout.java:689)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at crc64e1fb321c08285b90.ListViewRenderer.n_onLayout(Native Method)
    at crc64e1fb321c08285b90.ListViewRenderer.onLayout(ListViewRenderer.java:75)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at crc6452ffdc5b34af3a0f.ContentViewGroup.n_onLayout(Native Method)
    at crc6452ffdc5b34af3a0f.ContentViewGroup.onLayout(ContentViewGroup.java:67)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
    at androidx.core.widget.NestedScrollView.onLayout(NestedScrollView.java:2205)
    at crc6452ffdc5b34af3a0f.MauiScrollView.n_onLayout(Native Method)
    at crc6452ffdc5b34af3a0f.MauiScrollView.onLayout(MauiScrollView.java:77)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at crc6452ffdc5b34af3a0f.ContentViewGroup.n_onLayout(Native Method)
    at crc6452ffdc5b34af3a0f.ContentViewGroup.onLayout(ContentViewGroup.java:67)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at crc6452ffdc5b34af3a0f.LayoutViewGroup.n_onLayout(Native Method)
    at crc6452ffdc5b34af3a0f.LayoutViewGroup.onLayout(LayoutViewGroup.java:67)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at crc6452ffdc5b34af3a0f.ContentViewGroup.n_onLayout(Native Method)
    at crc6452ffdc5b34af3a0f.ContentViewGroup.onLayout(ContentViewGroup.java:67)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at crc640ec207abc449b2ca.ShellPageContainer.n_onLayout(Native Method)
    at crc640ec207abc449b2ca.ShellPageContainer.onLayout(ShellPageContainer.java:58)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at androidx.recyclerview.widget.RecyclerView$LayoutManager.layoutDecoratedWithMargins(RecyclerView.java:10321)
    at androidx.recyclerview.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1720)
    at androidx.recyclerview.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1622)
    at androidx.recyclerview.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:687)
    at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:4604)
    at androidx.recyclerview.widget.RecyclerView.dispatchLayout(RecyclerView.java:4307)
    at androidx.recyclerview.widget.RecyclerView.onLayout(RecyclerView.java:4873)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at androidx.viewpager2.widget.ViewPager2.onLayout(ViewPager2.java:527)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at com.google.android.material.appbar.HeaderScrollingViewBehavior.layoutChild(HeaderScrollingViewBehavior.java:149)
    at com.google.android.material.appbar.ViewOffsetBehavior.onLayoutChild(ViewOffsetBehavior.java:43)
    at com.google.android.material.appbar.AppBarLayout$ScrollingViewBehavior.onLayoutChild(AppBarLayout.java:2376)
    at androidx.coordinatorlayout.widget.CoordinatorLayout.onLayout(CoordinatorLayout.java:953)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1829)
    at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1673)
    at android.widget.LinearLayout.onLayout(LinearLayout.java:1582)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at androidx.drawerlayout.widget.DrawerLayout.onLayout(DrawerLayout.java:1273)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1829)
    at android.widget.LinearLayout.layoutHorizontal(LinearLayout.java:1818)
    at android.widget.LinearLayout.onLayout(LinearLayout.java:1584)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1829)
    at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1673)
    at android.widget.LinearLayout.onLayout(LinearLayout.java:1582)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at com.android.internal.widget.DecorCaptionView.onLayout(DecorCaptionView.java:334)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
    at com.android.internal.policy.DecorView.onLayout(DecorView.java:797)
    at android.view.View.layout(View.java:23203)
    at android.view.ViewGroup.layout(ViewGroup.java:6412)
    at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:3749)
    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:3205)
    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:2179)
    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:8787)
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1037)
    at android.view.Choreographer.doCallbacks(Choreographer.java:845)
    at android.view.Choreographer.doFrame(Choreographer.java:780)
    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1022)
    at android.os.Handler.handleCallback(Handler.java:938)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loopOnce(Looper.java:201)
    at android.os.Looper.loop(Looper.java:288)
    at android.app.ActivityThread.main(ActivityThread.java:7870)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)

您能帮我找出导致问题的原因吗？

编辑：

我在 Android 项目设置中启用了 R8 代码压缩器，并将此行添加到我的项目文件中：

<IncludeSymbols>True</IncludeSymbols>.

Answer 1

据我所知，没有与潜在问题相关的代码，因此我将建议我如何修复此错误，并详细说明原因。这可能是情境性的并且难以在您的应用程序中重现。

如错误所述，maui 应用程序正在尝试更改已有父视图的现有视图的父视图，而不从父视图中删除子视图。这是不允许的（尽管我之前在 Xamarin Forms 中这样做没有任何问题）。

在我的实例中，当我在自定义表单的页面之间导航时，当我尝试将带有答案的视图添加回存储在视图模型中的页面时，我遇到了与上面相同的错误。为了解决我的错误，我只是检查视图是否有父级，然后再添加回新的父级（网格、堆栈布局等）。如果它们确实有父级，请使用子级检索父级，并将子级从父级的子级中删除。然后您可以自由地将现在的孤立视图添加到新的父视图中。

希望这有帮助！