Maui iOS UIApplication.Main() 抛出异常

Question

我有一个 Xamarin.Forms 应用程序，我正在将其移植到 MAUI。 Android 版本运行良好且构建良好。 iOS 存在一个长期存在的问题，即 Program.Main(args) 会引发异常。在我们真正能够单步执行任何操作之前，iOS 设备上的看门狗会杀死该应用程序。

代码：

using MyMauiApp;
using ObjCRuntime;
using System.Diagnostics;
using UIKit;

namespace MyMaui
{
    public class Program
    {
        // This is the main entry point of the application.
        static void Main(string[] args)
        {
            // if you want to use a different Application Delegate class from "AppDelegate"
            // you can specify it here.
            try
            {
                UIApplication.Main(args, null, typeof(AppDelegate));
            }
            catch (Exception ex)
            {
                Debug.WriteLine("*-*-*-*-*-*-*-");
                Debug.WriteLine(ex);
                Debug.WriteLine("*-*-*-*-*-*-*-");
            }
        }
    }
}

[0:] *-*-*-*-*-*-*-
[0:] System.TypeLoadException: Could not resolve type with token 01000005 from typeref (expected class 'System.Runtime.CompilerServices.InternalsVisibleToAttribute' in assembly 'netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51')
   at System.Reflection.CustomAttribute.GetCustomAttributesBase(ICustomAttributeProvider , Type , Boolean )
   at System.Reflection.CustomAttribute.GetCustomAttributes(ICustomAttributeProvider , Type , Boolean )
   at System.Reflection.RuntimeAssembly.GetCustomAttributes(Type , Boolean )
   at Microsoft.Maui.Platform.ReflectionExtensions.GetCustomAttributesSafe(Assembly assembly, Type attrType)
   at Microsoft.Maui.Controls.Internals.Registrar.RegisterAll(Assembly[] assemblies, Assembly defaultRendererAssembly, Type[] attrTypes, InitializationFlags flags, Action`1 viewRegistered, IFontRegistrar fontRegistrar)
   at Microsoft.Maui.Controls.Internals.Registrar.RegisterAll(Type[] attrTypes, InitializationFlags flags, IFontRegistrar fontRegistrar)
   at Microsoft.Maui.Controls.Internals.Registrar.RegisterAll(Type[] attrTypes, IFontRegistrar fontRegistrar)
   at Microsoft.Maui.Controls.Compatibility.Forms.RegisterCompatRenderers(IMauiContext )
   at Microsoft.Maui.Controls.Compatibility.Forms.SetupInit(IMauiContext , Nullable`1 )
   at Microsoft.Maui.Controls.Compatibility.Forms.Init(IActivationState , Nullable`1 )
   at Microsoft.Maui.Controls.Compatibility.Hosting.AppHostBuilderExtensions.<>c.<OnConfigureLifeCycle>b__1_1(IMauiContext mauiContext)
   at Microsoft.Maui.Platform.ApplicationExtensions.<>c__DisplayClass3_0.<CreatePlatformWindow>b__0(OnMauiContextCreated del)
   at Microsoft.Maui.LifecycleEvents.LifecycleEventServiceExtensions.InvokeLifecycleEvents[OnMauiContextCreated](IServiceProvider services, Action`1 action)
   at Microsoft.Maui.Platform.ApplicationExtensions.CreatePlatformWindow(IApplication application, UIWindowScene windowScene, NSDictionary[] states)
   at Microsoft.Maui.Platform.ApplicationExtensions.CreatePlatformWindow(IUIApplicationDelegate platformApplication, IApplication application, UIApplication uiApplication, NSDictionary launchOptions)
   at Microsoft.Maui.MauiUIApplicationDelegate.FinishedLaunching(UIApplication application, NSDictionary launchOptions)
   at MauiSalesSupportApp.AppDelegate.FinishedLaunching(UIApplication app, NSDictionary options) in C:\Users\myUser\Documents\Source-Repos\myRepo\mySolution\Platforms\iOS\AppDelegate.cs:line 70
   at UIKit.UIApplication.UIApplicationMain(Int32 , String[] , IntPtr , IntPtr ) in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UIApplication.cs:line 58
   at UIKit.UIApplication.Main(String[] , Type , Type ) in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UIApplication.cs:line 94
   at myApp.Program.Main(String[] args) in C:\Users\myUser\Documents\Source-Repos\myRepo\myApp\Platforms\iOS\Program.cs:line 17
[0:] *-*-*-*-*-*-*-

我们尝试清理和重建该项目。

我正在使用.NET 8.0.303。 iOS 版本是 17.5.1。 软件包包括：ACR.UserDialogs (9.0.0)、CommunityToolkit.Maui (9.0.2)、CommunityToolkit.Mvvm (8.2.2)、FFImageLoading.Maui (1.2.6)、Microsoft.AppCenter (5.0.5)、Microsoft。 AppCenter.Crashes (5.0.5)、Microsoft.AppCenter.Analystic (5.0.5)、Microsoft.Maui.Controls (8.0.70)、Microsoft.Maui.Controls.Compatibility (8.0.70)、Microsoft.Maui.Controls.Maps (8.0.70)、Microsoft.NET.ILLink.Tasks (8.0.7)、MonkeyCache.SQLite(2.1) .1)、Newtonsoft.JSON(13.0.3)、Prism.Core (9.0.462)、Prism.DryIoc.Maui (9.0.462)、Prism.Maui (9.0.462)、Prism.Maui.Rx (9.0.462)、SkiaSharp (2.88.8)、Syncfusion.Licensing (26.1.42)、Syncfusion.Maui.Calendar (26.1. 42)、Syncfusion.Maui.Core (26.1.42), Syncfusion.Maui.Inputs (26.1.42)、Syncfusion.Maui.Popup (26.1.42)、Syncfusion.Maui.TabView (26.1.42)、Xam.Plugin.DeviceInfo (4.2.0)、ZXing.Net.Maui ( 0.4.0), ZXing.Net.Maui.Controls (0.4.0).

Answer 1

作为快速诊断步骤，请在从 Visual Studio 部署应用程序后尝试从 iPhone 启动该应用程序。当我这样做时，应用程序运行良好，但如果我尝试从 Visual Studio 进行调试，则会崩溃，这表明附加 VS 时出现问题。

我能够通过禁用热重载来解决这个问题：

1. 在 Visual Studio 中，转到“工具”->“选项”
2. 展开调试
3. 选择XAML热重载
4. 取消选中 Android 和 iOS (.NET MAUI)
5. 单击“确定”以应用选项弹出窗口中的更改

这很烦人，因为如果您正在开发 Android 项目，这也会禁用那里的热重载，但至少它使您能够在 iOS 上调试代码。