我正在开发一个应用程序来处理 Android 的库存，当它在设备本身上运行时崩溃（我使用的是三星 S 20+ 和 A 21S，但如果它在调试模式下连接到 Visual Studio，它就可以工作很好，它是一个与可观察集合相关的集合视图，视图模型有两组变量，其中包含所有记录，另一个处理过滤器，最初两者具有相同的数据子集（不应用过滤器） ，但是当我设置第二个值（即 CollectionView 上使用的值）时，应用程序崩溃了。
使用 Net Maui 8.0.60，目标是 14v min 版本 10
public InventoryViewModel()
{
if (string.IsNullOrEmpty(Title))
Title = "Inventario";
SelectionMode = SelectionMode.Multiple;
LoadInventory();
}
public void LoadInventory()
{
try
{
Inventory = new ObservableCollection<ProductsModel>();
Inventory.Add(new ProductsModel { ProductId = 1, ProductName = "Perfume 1", ProductCategory = "P", Quantity = 1, UnitPrice = 3.53M, BarCode = "1234", IsImageOnServer = false });
Inventory.Add(new ProductsModel { ProductId = 2, ProductName = "Perfume 2", ProductCategory = "P", Quantity = 2, UnitPrice = 4.63M, BarCode = "5697", IsImageOnServer = false });
Inventory.Add(new ProductsModel { ProductId = 3, ProductName = "Perfume 3", ProductCategory = "P", Quantity = 3, UnitPrice = 5.73M, BarCode = "8741", IsImageOnServer = false });
Inventory.Add(new ProductsModel { ProductId = 4, ProductName = "Perfume 4", ProductCategory = "P", Quantity = 2, UnitPrice = 6.83M, BarCode = "9965", IsImageOnServer = false });
**SearchResults = Inventory;** //Here is where the app crash.
}
catch (Exception)
{
throw;
}
}
我一直在努力：
在声明时添加一些延迟，然后添加数据，认为这是一个时间问题，但不是运气。
这是堆栈代码：
Time Device Name Type PID Tag Message
06-27 23:16:36.573 Samsung SM-A217M Error 11830 AndroidRuntime Process: com.gperfumes.crm, PID: 11830
06-27 23:16:36.607 Samsung SM-A217M Warning 5368 WindowManager Prepare app transition: mNextAppTransitionRequests=[TRANSIT_CLOSE, TRANSIT_CLOSE, TRANSIT_CLOSE], mNextAppTransitionFlags=TRANSIT_FLAG_APP_CRASHED, displayId: 0 Callers=com.android.server.wm.DisplayContent.prepareAppTransition:6369 com.android.server.wm.DisplayContent.prepareAppTransition:6364 com.android.server.wm.ActivityRecord.finishIfPossible:3650 com.android.server.wm.ActivityRecord.finishIfPossible:3456 com.android.server.wm.Task.finishTopCrashedActivityLocked:8918
06-27 23:16:36.606 Samsung SM-A217M Debug 5368 SGM:GameManager sendFocusOutConditionally() - mPrevNotiPkg: (unknown), userId: 0
handleTaskFocused(), pkgName: com.sec.android.app.launcher, userID:0 mResumedPkgMap does not containsKey.
06-27 23:16:36.606 Samsung SM-A217M Debug 5368 SGM:GameManager handleTaskFocused().
06-27 23:16:36.606 Samsung SM-A217M Debug 5368 SGM:GameManager onLooperPrepared(), msg: MSG_TASK_FOCUSED, pkgName: com.sec.android.app.launcher, userId: 0
06-27 23:16:36.605 Samsung SM-A217M Debug 5368 SGM:GameManager TaskStackListener.onTaskFocusChanged(), taskId=23936, focused=true
sendRunningComponentFocus(), pkgName: com.sec.android.app.launcher, userId: 0
06-27 23:16:36.605 Samsung SM-A217M Debug 5368 SGM:GameManager TaskStackListener.onTaskFocusChanged(), taskId=23965, focused=false
06-27 23:16:36.605 Samsung SM-A217M Debug 5368 StatusBarManagerService notifyRequestedSystemKey recent=false home=false
06-27 23:16:36.605 Samsung SM-A217M Debug 5368 MARsPolicyManager onPackageResumedFG pkgName = com.gperfumes.crm, userId = 0
06-27 23:16:36.605 Samsung SM-A217M Verbose 5368 WindowManager Changing focus from Window{dd96dcb u0 com.gperfumes.crm/crc646584e998dbc9d4ac.MainActivity} to null displayId=0 Callers=com.android.server.wm.RootWindowContainer.updateFocusedWindowLocked:583 com.android.server.wm.WindowManagerService.updateFocusedWindowLocked:6497 com.android.server.wm.ActivityTaskManagerService.setResumedActivityUncheckLocked:5498 com.android.server.wm.ActivityRecord.moveFocusableActivityToTop:3364
06-27 23:16:36.603 Samsung SM-A217M Debug 5368 InputDispatcher Focused application set to (0): 99e7e90
06-27 23:16:36.602 Samsung SM-A217M Warning 5368 WindowManager Prepare app transition: mNextAppTransitionRequests=[TRANSIT_CLOSE, TRANSIT_CLOSE], mNextAppTransitionFlags=TRANSIT_FLAG_APP_CRASHED, displayId: 0 Callers=com.android.server.wm.DisplayContent.prepareAppTransition:6369 com.android.server.wm.DisplayContent.requestTransitionAndLegacyPrepare:6384 com.android.server.wm.Task.finishTopCrashedActivityLocked:8917 com.android.server.wm.RootWindowContainer.lambda$finishTopCrashedActivities$20:2781 com.android.server.wm.RootWindowContainer$$ExternalSyntheticLambda30.accept:10
06-27 23:16:36.601 Samsung SM-A217M Warning 5368 WindowManager Prepare app transition: mNextAppTransitionRequests=[TRANSIT_CLOSE], mNextAppTransitionFlags=TRANSIT_FLAG_APP_CRASHED, displayId: 0 Callers=com.android.server.wm.DisplayContent.prepareAppTransition:6369 com.android.server.wm.Task.finishTopCrashedActivityLocked:8916 com.android.server.wm.RootWindowContainer.lambda$finishTopCrashedActivities$20:2781 com.android.server.wm.RootWindowContainer$$ExternalSyntheticLambda30.accept:10 com.android.server.wm.Task.forAllTasks:5181
06-27 23:16:36.599 Samsung SM-A217M Warning 5368 ContextImpl Calling a method in the system process without a qualified user: android.app.ContextImpl.sendBroadcast:1242 com.android.server.am.AppErrors.crashApplicationInner:724 com.android.server.am.AppErrors.crashApplication:584 com.android.server.am.ActivityManagerService.handleApplicationCrashInner:9793 com.android.server.am.ActivityManagerService.handleApplicationCrash:9672
Force finishing activity com.gperfumes.crm/crc646584e998dbc9d4ac.MainActivity
06-27 23:16:36.599 Samsung SM-A217M Warning 5368 ActivityManager crash : com.gperfumes.crm,10338
06-27 23:16:36.598 Samsung SM-A217M Debug 5368 Debug low && ship && 3rdparty app crash, do not dump
06-27 23:16:36.598 Samsung SM-A217M Info 5368 DropBoxManagerService add tag=data_app_crash isTagEnabled=true flags=0x2
06-27 23:16:36.593 Samsung SM-A217M Info 11830 MonoDroid
06-27 23:16:36.593 Samsung SM-A217M Info 11830 MonoDroid android.runtime.JavaProxyThrowable: [System.Reflection.TargetInvocationException]: Arg_TargetInvocationException
at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Unknown Source:0)
at System.RuntimeType.CreateInstanceMono(Unknown Source:0)
at System.RuntimeType.CreateInstanceDefaultCtor(Unknown Source:0)
at System.Activator.CreateInstance(Unknown Source:0)
at System.Activator.CreateInstance(Unknown Source:0)
at System.Activator.CreateInstance(Unknown Source:0)
at Microsoft.Maui.Controls.Routing+TypeRouteFactory.GetOrCreate(Unknown Source:0)
at Microsoft.Maui.Controls.Routing.GetOrCreateContent(Unknown Source:0)
at Microsoft.Maui.Controls.ShellSection.GetOrCreateFromRoute(Unknown Source:0)
at Microsoft.Maui.Controls.ShellSection+<GoToAsync>d__65.MoveNext(Unknown Source:0)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw(Unknown Source:0)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Unknown Source:0)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Unknown Source:0)
at Microsoft.Maui.Controls.ShellNavigationManager+<GoToAsync>d__14.MoveNext(Unknown Source:0)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw(Unknown Source:0)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Unknown Source:0)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Unknown Source:0)
at CRM.ViewModels.InventoryViewModel+<>c+<<get_EditProductCommand>b__41_0>d.MoveNext(Unknown Source:0)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw(Unknown Source:0)
at System.Threading.Tasks.Task+<>c.<ThrowAsync>b__128_0(Unknown Source:0)
at Android.App.SyncContext+<>c__DisplayClass2_0.<Post>b__0(Unknown Source:0)
at Java.Lang.Thread+RunnableImplementor.Run(Unknown Source:0)
at Java.Lang.IRunnableInvoker.n_Run(Unknown Source:0)
at Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PP_V(Unknown Source:0)
at mono.java.lang.RunnableImplementor.n_run(Native Method)
at mono.java.lang.RunnableImplementor.run(RunnableImplementor.java:31)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:226)
at android.os.Looper.loop(Looper.java:313)
at android.app.ActivityThread.main(ActivityThread.java:8669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:571)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1135)
06-27 23:16:36.593 Samsung SM-A217M Info 11830 MonoDroid
--- End of managed Android.Runtime.JavaProxyThrowable stack trace ---
06-27 23:16:36.592 Samsung SM-A217M Info 11830 MonoDroid android.runtime.JavaProxyThrowable: [System.Reflection.TargetInvocationException]: Arg_TargetInvocationException
at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Unknown Source:0)
at System.RuntimeType.CreateInstanceMono(Unknown Source:0)
at System.RuntimeType.CreateInstanceDefaultCtor(Unknown Source:0)
at System.Activator.CreateInstance(Unknown Source:0)
at System.Activator.CreateInstance(Unknown Source:0)
at System.Activator.CreateInstance(Unknown Source:0)
at Microsoft.Maui.Controls.Routing+TypeRouteFactory.GetOrCreate(Unknown Source:0)
at Microsoft.Maui.Controls.Routing.GetOrCreateContent(Unknown Source:0)
at Microsoft.Maui.Controls.ShellSection.GetOrCreateFromRoute(Unknown Source:0)
at Microsoft.Maui.Controls.ShellSection+<GoToAsync>d__65.MoveNext(Unknown Source:0)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw(Unknown Source:0)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Unknown Source:0)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Unknown Source:0)
at Microsoft.Maui.Controls.ShellNavigationManager+<GoToAsync>d__14.MoveNext(Unknown Source:0)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw(Unknown Source:0)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Unknown Source:0)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Unknown Source:0)
at CRM.ViewModels.InventoryViewModel+<>c+<<get_EditProductCommand>b__41_0>d.MoveNext(Unknown Source:0)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw(Unknown Source:0)
at System.Threading.Tasks.Task+<>c.<ThrowAsync>b__128_0(Unknown Source:0)
at Android.App.SyncContext+<>c__DisplayClass2_0.<Post>b__0(Unknown Source:0)
at Java.Lang.Thread+RunnableImplementor.Run(Unknown Source:0)
at Java.Lang.IRunnableInvoker.n_Run(Unknown Source:0)
at Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PP_V(Unknown Source:0)
at mono.java.lang.RunnableImplementor.n_run(Native Method)
at mono.java.lang.RunnableImplementor.run(RunnableImplementor.java:31)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:226)
at android.os.Looper.loop(Looper.java:313)
at android.app.ActivityThread.main(ActivityThread.java:8669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:571)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1135)
06-27 23:16:36.592 Samsung SM-A217M Info 11830 MonoDroid
--- End of managed Android.Runtime.JavaProxyThrowable stack trace ---
06-27 23:16:36.592 Samsung SM-A217M Info 11830 MonoDroid Android.Runtime.JavaProxyThrowable: Exception_WasThrown, Android.Runtime.JavaProxyThrowable
06-27 23:16:36.584 Samsung SM-A217M Info 11830 MonoDroid UNHANDLED EXCEPTION:
06-27 23:16:36.582 Samsung SM-A217M Warning 11830 monodroid-assembly Shared library 'liblog' not loaded, p/invoke '__android_log_print' may fail
06-27 23:16:36.573 Samsung SM-A217M Error 11830 AndroidRuntime android.runtime.JavaProxyThrowable: [System.Reflection.TargetInvocationException]: Arg_TargetInvocationException
at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Unknown Source:0)
at System.RuntimeType.CreateInstanceMono(Unknown Source:0)
at System.RuntimeType.CreateInstanceDefaultCtor(Unknown Source:0)
at System.Activator.CreateInstance(Unknown Source:0)
at System.Activator.CreateInstance(Unknown Source:0)
at System.Activator.CreateInstance(Unknown Source:0)
at Microsoft.Maui.Controls.Routing+TypeRouteFactory.GetOrCreate(Unknown Source:0)
at Microsoft.Maui.Controls.Routing.GetOrCreateContent(Unknown Source:0)
at Microsoft.Maui.Controls.ShellSection.GetOrCreateFromRoute(Unknown Source:0)
at Microsoft.Maui.Controls.ShellSection+<GoToAsync>d__65.MoveNext(Unknown Source:0)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw(Unknown Source:0)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Unknown Source:0)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Unknown Source:0)
at Microsoft.Maui.Controls.ShellNavigationManager+<GoToAsync>d__14.MoveNext(Unknown Source:0)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw(Unknown Source:0)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Unknown Source:0)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Unknown Source:0)
at CRM.ViewModels.InventoryViewModel+<>c+<<get_EditProductCommand>b__41_0>d.MoveNext(Unknown Source:0)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw(Unknown Source:0)
at System.Threading.Tasks.Task+<>c.<ThrowAsync>b__128_0(Unknown Source:0)
at Android.App.SyncContext+<>c__DisplayClass2_0.<Post>b__0(Unknown Source:0)
at Java.Lang.Thread+RunnableImplementor.Run(Unknown Source:0)
at Java.Lang.IRunnableInvoker.n_Run(Unknown Source:0)
at Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PP_V(Unknown Source:0)
at mono.java.lang.RunnableImplementor.n_run(Native Method)
at mono.java.lang.RunnableImplementor.run(RunnableImplementor.java:31)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:226)
at android.os.Looper.loop(Looper.java:313)
at android.app.ActivityThread.main(ActivityThread.java:8669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:571)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1135)
感谢大家的评论，与他们一起，我找到了问题的解决方案。
问题出在 XAML 代码中，而不是在 C# 中，collectionview 上有错误的引用，我指向了对不存在名称的引用。
我阅读了所有这篇文章，其中有人引用了一个不存在的颜色名称，我开始注释掉所有控件，然后一一启用（在 XAML 上），直到找到根本原因（我没有玩因为我认为问题出在 C# 代码而不是 XAML）
<SwipeView.RightItems>
<SwipeItems Mode="Reveal">
<SwipeItem Text="Editar"
BackgroundColor="#4CAF50"
IconImageSource="{FontImage FontFamily='AwesomeIcons', Glyph={x:Static FontHelpers:FontHelperAwesome.Pencil}, Size=30, Color=LightGreen}"
Command="{Binding BindingContext.EditTransactionCommand, **Source={x:Reference TransactionStatementCollectionView}}"** //This reference was pointing to the wrong name
CommandParameter="{Binding .}" />
</SwipeItems>
</SwipeView.RightItems>