Visual Studio for Mac：Guid应该包含32个数字（4个破折号）（xxxx …）

我是一个适用于Mac的Visual Studio的菜鸟。 我的目的是检查Xamarin发展。 我的Visual Studio版本是7.3（Build 799）社区版，我已经安装在MB Pro 2015 Mid模型上。

当我尝试按照以下方式创build项目时，

• 多
  • 应用
    • 游戏（iOS，Mac）
      • SpriteKit游戏（2D）

然后继续执行步骤，直到按下创buildbutton给出项目名称，所有它只是给我以下警报，我不能创build该项目。

更新：我通过转到“打开日志目录”菜单项find以下日志。

ERROR [2017-12-14 00:46:07Z]: The project could not be created System.FormatException: Guid should contain 32 digits with 4 dashes (xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx). at System.Guid+GuidResult.SetFailure (System.Guid+ParseFailureKind failure, System.String failureMessageID, System.Object failureMessageFormatArgument, System.String failureArgumentName, System.Exception innerException) [0x00034] in /Users/builder/data/lanes/4992/mono-mac-sdk/external/bockbuild/builds/mono-x64/mcs/class/referencesource/mscorlib/system/guid.cs:200 at System.Guid+GuidResult.SetFailure (System.Guid+ParseFailureKind failure, System.String failureMessageID) [0x00000] in /Users/builder/data/lanes/4992/mono-mac-sdk/external/bockbuild/builds/mono-x64/mcs/class/referencesource/mscorlib/system/guid.cs:184 at System.Guid.TryParseGuidWithNoStyle (System.String guidString, System.Guid+GuidResult& result) [0x0000e] in /Users/builder/data/lanes/4992/mono-mac-sdk/external/bockbuild/builds/mono-x64/mcs/class/referencesource/mscorlib/system/guid.cs:611 at System.Guid.TryParseGuid (System.String g, System.Guid+GuidStyles flags, System.Guid+GuidResult& result) [0x000f8] in /Users/builder/data/lanes/4992/mono-mac-sdk/external/bockbuild/builds/mono-x64/mcs/class/referencesource/mscorlib/system/guid.cs:451 at System.Guid..ctor (System.String g) [0x00029] in /Users/builder/data/lanes/4992/mono-mac-sdk/external/bockbuild/builds/mono-x64/mcs/class/referencesource/mscorlib/system/guid.cs:244 at Xamarin.AndroidDesigner.MonoDevelop.AndroidDesignerInitializer+<>c.<SupportsObject>b__1_0 (System.String g) [0x00000] in /Users/vsts/agent/2.126.0/work/3/s/Xamarin.Designer.Android/Xamarin.AndroidDesigner.MonoDevelop/AndroidDesignerInitializer.cs:23 at System.Linq.Enumerable.Any[TSource] (System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] predicate) [0x0002c] in /Users/builder/data/lanes/4992/mono-mac-sdk/external/bockbuild/builds/mono-x64/external/corefx/src/System.Linq/src/System/Linq/AnyAll.cs:38 at Xamarin.AndroidDesigner.MonoDevelop.AndroidDesignerInitializer.SupportsObject (MonoDevelop.Projects.WorkspaceObject item) [0x00014] in /Users/vsts/agent/2.126.0/work/3/s/Xamarin.Designer.Android/Xamarin.AndroidDesigner.MonoDevelop/AndroidDesignerInitializer.cs:23 at MonoDevelop.Projects.WorkspaceObject.InitializeExtensionChain () [0x00091] in /Users/builder/data/lanes/5402/df590420/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/WorkspaceObject.cs:382 at MonoDevelop.Projects.WorkspaceObject.EnsureInitialized () [0x00021] in /Users/builder/data/lanes/5402/df590420/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/WorkspaceObject.cs:74 at MonoDevelop.Projects.MSBuild.MSBuildProjectService.CreateProject (System.String typeGuid, MonoDevelop.Projects.ProjectCreateInformation info, System.Xml.XmlElement projectOptions, System.String[] flavorGuids) [0x00046] in /Users/builder/data/lanes/5402/df590420/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects.MSBuild/MSBuildProjectService.cs:526 at MonoDevelop.Projects.ProjectService.CreateProject (System.String typeAlias, MonoDevelop.Projects.ProjectCreateInformation info, System.Xml.XmlElement projectOptions, System.String[] flavorGuids) [0x00000] in /Users/builder/data/lanes/5402/df590420/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/ProjectService.cs:341 at MonoDevelop.Ide.Templates.ProjectDescriptor.CreateItem (MonoDevelop.Projects.ProjectCreateInformation projectCreateInformation, System.String defaultLanguage) [0x0012b] in /Users/builder/data/lanes/5402/df590420/source/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Templates/ProjectDescriptor.cs:140 at MonoDevelop.Ide.Templates.SolutionDescriptor.CreateEntry (MonoDevelop.Projects.ProjectCreateInformation projectCreateInformation, System.String defaultLanguage) [0x001e9] in /Users/builder/data/lanes/5402/df590420/source/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Templates/SolutionDescriptor.cs:161 at MonoDevelop.Ide.Templates.ProjectTemplate.CreateWorkspaceItem (MonoDevelop.Projects.ProjectCreateInformation cInfo) [0x00000] in /Users/builder/data/lanes/5402/df590420/source/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Templates/ProjectTemplate.cs:311 at MonoDevelop.Ide.Templates.ProjectTemplatingProvider.ProcessTemplate (MonoDevelop.Ide.Templates.DefaultSolutionTemplate template, MonoDevelop.Ide.Projects.NewProjectConfiguration config, MonoDevelop.Projects.SolutionFolder parentFolder) [0x0000e] in /Users/builder/data/lanes/5402/df590420/source/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Templates/ProjectTemplatingProvider.cs:67 at MonoDevelop.Ide.Templates.ProjectTemplatingProvider.ProcessTemplate (MonoDevelop.Ide.Templates.SolutionTemplate template, MonoDevelop.Ide.Projects.NewProjectConfiguration config, MonoDevelop.Projects.SolutionFolder parentFolder) [0x00000] in /Users/builder/data/lanes/5402/df590420/source/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Templates/ProjectTemplatingProvider.cs:58 at MonoDevelop.Ide.Templates.TemplatingService+<ProcessTemplate>d__13.MoveNext () [0x00024] in /Users/builder/data/lanes/5402/df590420/source/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Templates/TemplatingService.cs:150 

有没有人遇到过这样的问题？ 你已经解决了任何解决scheme或解决方法？

Answer 1

所以问题似乎是，如果项目模板使用的某个项目types不受支持，则会使用空的flavor guid创build未知的项目types。 这会导致Androiddevise者发生exception。

在这种情况下，Xamarin.iOS项目types被认为是不支持的，因为Xamarin.iOS没有安装。

这似乎是Visual Studio for Mac中的一个错误。 如果项目模板不受支持，则不应尝试创buildXamarin.iOS项目，或者应该使用不使用空string的flavor guid来创build未知项目。