加载android axml文件时出错Visual Studio Mac

Question

Visual Studio的Android设计人员并没有加载axml个文件。

这发生在每个Android项目上。尝试降级VS版本，从alpha通道安装新版本，尝试在设计师中选择其他主题，没有任何帮助。

这是错误：

    System.ArgumentNullException: Value cannot be null.
Parameter name: path1
  at System.IO.Path.Combine (System.String path1, System.String path2, System.String path3) [0x0002a] in /Users/builder/data/lanes/4992/mono-mac-sdk/external/bockbuild/builds/mono-x64/mcs/class/corlib/System.IO/Path.cs:849 
  at Xamarin.AndroidDesigner.DesignerProject+<>c.<GetLibraryProjectThemes>b__118_0 (System.String l) [0x00000] in /Users/vsts/agent/2.124.0/work/1/s/Xamarin.Designer.Android/Xamarin.AndroidDesigner/Xamarin.AndroidDesigner/DesignerProject.cs:532 
  at System.Linq.Enumerable+SelectListIterator`2[TSource,TResult].MoveNext () [0x00036] in /Users/builder/data/lanes/4992/mono-mac-sdk/external/bockbuild/builds/mono-x64/external/corefx/src/System.Linq/src/System/Linq/Select.cs:365 
  at System.Linq.Enumerable+WhereEnumerableIterator`1[TSource].MoveNext () [0x0004e] in /Users/builder/data/lanes/4992/mono-mac-sdk/external/bockbuild/builds/mono-x64/external/corefx/src/System.Linq/src/System/Linq/Where.cs:146 
  at System.Linq.Enumerable+SelectManySingleSelectorIterator`2[TSource,TResult].ToList () [0x0002d] in /Users/builder/data/lanes/4992/mono-mac-sdk/external/bockbuild/builds/mono-x64/external/corefx/src/System.Linq/src/System/Linq/SelectMany.cs:257 
  at System.Linq.Enumerable.ToList[TSource] (System.Collections.Generic.IEnumerable`1[T] source) [0x00015] in /Users/builder/data/lanes/4992/mono-mac-sdk/external/bockbuild/builds/mono-x64/external/corefx/src/System.Linq/src/System/Linq/ToCollection.cs:30 
  at Xamarin.AndroidDesigner.DesignerProject.GetLibraryProjectThemes () [0x00037] in /Users/vsts/agent/2.124.0/work/1/s/Xamarin.Designer.Android/Xamarin.AndroidDesigner/Xamarin.AndroidDesigner/DesignerProject.cs:531 
  at Xamarin.AndroidDesigner.DesignerProject.GetIsProjectTheme (System.String themeName) [0x0000e] in /Users/vsts/agent/2.124.0/work/1/s/Xamarin.Designer.Android/Xamarin.AndroidDesigner/Xamarin.AndroidDesigner/DesignerProject.cs:544 
  at Xamarin.AndroidDesigner.DesignerSessionParams.GetData (Xamarin.AndroidDesigner.AndroidDesignerSession session, Xamarin.AndroidDesigner.AndroidRenderSession renderer) [0x00154] in /Users/vsts/agent/2.124.0/work/1/s/Xamarin.Designer.Android/Xamarin.AndroidDesigner/Xamarin.AndroidDesigner/DesignerSessionParams.cs:209 
  at Xamarin.AndroidDesigner.AndroidRenderSession+<InitSession>d__115.MoveNext () [0x00224] in /Users/vsts/agent/2.124.0/work/1/s/Xamarin.Designer.Android/Xamarin.AndroidDesigner/Xamarin.AndroidDesigner/AndroidRenderSession.cs:783 

任何人都知道发生了什么？

Answer 1

这似乎是Visual Studio / Xamarin for mac中的一个错误，至少在beta频道上。无法访问Windows版本，因此无法说。降级至稳定，应该是固定的。我无法使用当前的稳定版本，因为它无法使用某些软件包进行编译。