为iOS Xamarin表单执行远程构建时，Prism Navigation错误

Question

我已将Visual Studio与虚拟MAC机配对，创建了所需的钥匙串，并将其添加到我的项目中。我不断收到此错误：

Prism.Navigation.NavigationException: An error occurred while resolving the page. This is most likely the result of invalid XAML or other type initialization exception --->
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Reflection.TargetInvocationException: 
Exception has been thrown by the target of an invocation. ---> Microsoft.Identity.Client.MsalClientException: The application cannot access the iOS keychain for the application publisher (the TeamId is null). This is needed to enable Single Sign-On between applications of the same publisher.

我也尝试禁用Entitlements.plist中的钥匙串-不起作用。某种程度上，这似乎是Prism导航问题，因为当我消除该问题并仅导航到示例页面时，它就可以工作。

我也尝试在Physical Mac上运行我的项目，我得到了：

2020-06-01 01:45:29.879475-0700 NatWest.KeepSafe.MobileApp.iOS[6277:128192] SecTaskLoadEntitlements failed error=22 cs_flags=200, pid=6277
2020-06-01 01:45:29.880109-0700 NatWest.KeepSafe.MobileApp.iOS[6277:128192] SecTaskCopyDebugDescription: NatWest.KeepSafe[6277]/0#-1 LF=0
2020-06-01 01:45:29.897634-0700 NatWest.KeepSafe.MobileApp.iOS[6277:128192] SecTaskLoadEntitlements failed error=22 cs_flags=200, pid=6277
2020-06-01 01:45:29.897992-0700 NatWest.KeepSafe.MobileApp.iOS[6277:128192] SecTaskCopyDebugDescription: NatWest.KeepSafe[6277]/0#-1 LF=0

P.S：该代码可在物理iPhone上完美运行，但在模拟器上运行时会出现问题。

Answer 1

这与Prism完全无关。.MSAL实际上与Prism很好用，您可以看到AP.AzureADAuth模块样本。

您发布的错误实际上告诉您问题的确切原因。您的权利存在问题，导致其无法在iOS模拟器上运行。

有关更多信息，您需要在此处签出文档：

• https://docs.microsoft.com/en-us/azure/active-directory/develop/msal-net-xamarin-ios-considerations

var builder = PublicClientApplicationBuilder
     .Create(ClientId)
     .WithIosKeychainSecurityGroup("com.microsoft.adalcache")
     .Build();

并且在Entitlements.plist中，您想更新为类似内容：

<dict>
  <key>keychain-access-groups</key>
  <array>
    <string>$(AppIdentifierPrefix)com.microsoft.adalcache</string>
  </array>
</dict>