c# - Xamarin Android 文件路径太长

Question

当我尝试构建我的 Xamarin 项目时，我总是收到以下错误。

The specified path, file name, or both are too long. The fully qualified file name must be less than 260 characters, and the directory name must be less than 248 characters.

当然，我用谷歌搜索了这个错误，发现它很常见，所以我尝试了很多不同的解决方案。我将我所有的项目文件和我的 Android SDK、NDK 等直接移动到 C:。我还将我的 TEMP 文件夹设置在 C:\TEMP。然而，这些似乎都没有帮助。当我查看出现此错误的代码行时，Visual Studio 将我发送到 Xamarin.Android.Common.targets 中的这行代码。

<Target Name="_BuildAdditionalResourcesCache"
  Inputs="@(ReferencePath);@(ReferenceDependencyPaths)"
  Outputs="$(_AndroidResourcePathsCache)"
 >
 <GetAdditionalResourcesFromAssemblies
  AndroidSdkDirectory="$(_AndroidSdkDirectory)"
  AndroidNdkDirectory="$(_AndroidNdkDirectory)"
  Assemblies="@(ReferencePath);@(ReferenceDependencyPaths)"
  CacheFile="$(_AndroidResourcePathsCache)"
  Condition=" '$(DesignTimeBuild)' != 'true' "
 />
</Target>

具体错误指向第四行。我不能修改这个文件，所以我没有在这里尝试任何东西。

我真的不知道该尝试什么了，所以非常欢迎任何解决方案!我已经尝试卸载并重新安装 Visual Studio 和 Xamarin，这也没有用。该项目在其他计算机上运行良好。

编辑:我的堆栈跟踪

2>Target "_ValidateResourceCache" in file "C:\Program Files 
(x86)\MSBuild\Xamarin\Android\Xamarin.Android.Common.targets" from project "C:\MyProject\Droid\MyProject.Droid.csproj" (target "_GetAdditionalResourcesFromAssemblies" depends on it):
2>Task "ReadAdditionalResourcesFromAssemblyCache" skipped, due to false condition; (Exists('$(_AndroidResourcePathsCache)')) was evaluated as (Exists('obj\Release\resourcepaths.cache')).
2>Task "Delete" skipped, due to false condition; ( '$(_IsResourceCacheValid)' == 'False' ) was evaluated as ( '' == 'False' ).
2>Done building target "_ValidateResourceCache" in project "MyProject.Droid.csproj".
2>Target "_SetupDesignTimeBuildForIntellisense" in file "C:\Program Files (x86)\MSBuild\Xamarin\Android\Xamarin.Android.Common.targets" from project "C:\MyProject\Droid\MyProject.Droid.csproj" (target "_BuildAdditionalResourcesCache" depends on it):
2>Done building target "_SetupDesignTimeBuildForIntellisense" in project "MyProject.Droid.csproj".
2>Target "_BuildAdditionalResourcesCache" in file "C:\Program Files (x86)\MSBuild\Xamarin\Android\Xamarin.Android.Common.targets" from project "C:\MyProject\Droid\MyProject.Droid.csproj" (target "_GetAdditionalResourcesFromAssemblies" depends on it):
2>Building target "_BuildAdditionalResourcesCache" completely.
2>Output file "obj\Release\resourcepaths.cache" does not exist.
2>Using "GetAdditionalResourcesFromAssemblies" task from assembly "C:\Program Files (x86)\MSBuild\Xamarin\Android\Xamarin.Android.Build.Tasks.dll".
2>Task "GetAdditionalResourcesFromAssemblies"
2>  GetAdditionalResourcesFromAssemblies Task
2>    AndroidSdkDirectory: C:\Android\android-sdk\
2>    AndroidNdkDirectory: C:\Android\android-ndk-r10e\
2>    Assemblies: 
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Java.Interop.dll
2>      C:\MyProject\bin\Release\MyProject.dll
2>      C:\MyProject\packages\Microsoft.Bcl.Async.1.0.168\lib\portable-net45+win8+wpa81\Microsoft.Threading.Tasks.dll
2>      C:\MyProject\packages\Microsoft.Bcl.Async.1.0.168\lib\portable-net45+win8+wpa81\Microsoft.Threading.Tasks.Extensions.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v6.0\Mono.Android.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v6.0\Mono.Android.Export.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\mscorlib.dll
2>      C:\MyProject\packages\Newtonsoft.Json.8.0.3\lib\portable-net45+wp80+win8+wpa81+dnxcore50\Newtonsoft.Json.dll
2>      C:\MyProject\packages\refit.2.4.1\lib\MonoAndroid\Refit.dll
2>      C:\MyProject\packages\SQLite.Net.Core-PCL.3.1.1\lib\portable-win8+net45+wp8+wpa81+MonoAndroid1+MonoTouch1\SQLite.Net.dll
2>      C:\MyProject\packages\SQLite.Net-PCL.3.1.1\lib\MonoAndroid\SQLite.Net.Platform.XamarinAndroid.dll
2>      C:\MyProject\packages\Square.OkHttp.2.7.5.0\lib\MonoAndroid\Square.OkHttp.dll
2>      C:\MyProject\packages\Square.OkIO.1.6.0.0\lib\MonoAndroid\Square.OkIO.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\System.Core.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\System.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\System.Net.Http.dll
2>      C:\MyProject\packages\Microsoft.Net.Http.2.2.29\lib\monoandroid\System.Net.Http.Extensions.dll
2>      C:\MyProject\packages\Microsoft.Net.Http.2.2.29\lib\monoandroid\System.Net.Http.Primitives.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Runtime.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\System.Xml.dll
2>      C:\MyProject\packages\Xamarin.Bindings.UniversalImageLoader.1.0.4\lib\MonoAndroid\UniversalImageLoader.dll
2>      C:\MyProject\packages\Xamarin.Android.Support.Animated.Vector.Drawable.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.Animated.Vector.Drawable.dll
2>      C:\MyProject\packages\Xamarin.Android.Support.Design.23.3.0\lib\MonoAndroid43\Xamarin.Android.Support.Design.dll
2>      C:\MyProject\packages\Xamarin.Android.Support.Percent.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.Percent.dll
2>      C:\MyProject\packages\Xamarin.Android.Support.v13.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.v13.dll
2>      C:\MyProject\packages\Xamarin.Android.Support.v4.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.v4.dll
2>      C:\MyProject\packages\Xamarin.Android.Support.v7.AppCompat.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.v7.AppCompat.dll
2>      C:\MyProject\packages\Xamarin.Android.Support.v7.CardView.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.v7.CardView.dll
2>      C:\MyProject\packages\Xamarin.Android.Support.v7.MediaRouter.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.v7.MediaRouter.dll
2>      C:\MyProject\packages\Xamarin.Android.Support.v7.RecyclerView.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.v7.RecyclerView.dll
2>      C:\MyProject\packages\Xamarin.Android.Support.Vector.Drawable.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.Vector.Drawable.dll
2>      C:\MyProject\packages\Xamarin.GooglePlayServices.Analytics.29.0.0\lib\MonoAndroid41\Xamarin.GooglePlayServices.Analytics.dll
2>      C:\MyProject\packages\Xamarin.GooglePlayServices.Base.29.0.0\lib\MonoAndroid41\Xamarin.GooglePlayServices.Base.dll
2>      C:\MyProject\packages\Xamarin.GooglePlayServices.Basement.29.0.0\lib\MonoAndroid41\Xamarin.GooglePlayServices.Basement.dll
2>      C:\MyProject\packages\Xamarin.GooglePlayServices.Gcm.29.0.0\lib\MonoAndroid41\Xamarin.GooglePlayServices.Gcm.dll
2>      C:\MyProject\packages\Xamarin.GooglePlayServices.Location.29.0.0\lib\MonoAndroid41\Xamarin.GooglePlayServices.Location.dll
2>      C:\MyProject\packages\Xamarin.GooglePlayServices.Maps.29.0.0\lib\MonoAndroid41\Xamarin.GooglePlayServices.Maps.dll
2>      C:\MyProject\packages\Xamarin.GooglePlayServices.Measurement.29.0.0\lib\MonoAndroid41\Xamarin.GooglePlayServices.Measurement.dll
2>      C:\MyProject\packages\Xamarin.Insights.1.12.3\lib\MonoAndroid10\Xamarin.Insights.dll
2>      C:\MyProject\packages\ZXing.Net.Mobile.2.0.4.46\lib\MonoAndroid403\ZXing.Net.Mobile.Core.dll
2>      C:\MyProject\packages\ZXing.Net.Mobile.2.0.4.46\lib\MonoAndroid403\zxing.portable.dll
2>      C:\MyProject\packages\ZXing.Net.Mobile.2.0.4.46\lib\MonoAndroid403\ZXingNetMobile.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Collections.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Reflection.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Text.RegularExpressions.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Threading.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Threading.Tasks.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Diagnostics.Debug.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Linq.Expressions.dll
2>      C:\MyProject\bin\Release\SQLiteNetExtensions.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.IO.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Diagnostics.Tools.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Resources.ResourceManager.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Globalization.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Runtime.Serialization.Primitives.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Linq.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Runtime.Extensions.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Reflection.Extensions.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Net.Primitives.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Text.Encoding.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\System.Net.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Runtime.InteropServices.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Xml.XDocument.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Dynamic.Runtime.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.ObjectModel.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Xml.ReaderWriter.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Text.Encoding.Extensions.dll
2>      C:\Windows\Microsoft.Net\assembly\GAC_MSIL\Microsoft.CSharp\v4.0_4.0.0.0__b03f5f7f11d50a3a\Microsoft.CSharp.dll
2>      C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System\v4.0_4.0.0.0__b77a5c561934e089\System.dll
2>      C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Core\v4.0_4.0.0.0__b77a5c561934e089\System.Core.dll
2>      C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Dynamic\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Dynamic.dll
2>      C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Configuration\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll
2>      C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Xml\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.dll
2>      C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Numerics\v4.0_4.0.0.0__b77a5c561934e089\System.Numerics.dll
2>      C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Security\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Security.dll
2>      C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Data.SqlXml\v4.0_4.0.0.0__b77a5c561934e089\System.Data.SqlXml.dll
2>  GetAdditionalResourcesFromAssemblies Task
2>    AndroidSdkDirectory: C:\Android\android-sdk\
2>    AndroidNdkDirectory: C:\Android\android-ndk-r10e\
2>    Assemblies: 
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Java.Interop.dll
2>      C:\MyProject\bin\Release\MyProject.dll
2>      C:\MyProject\packages\Microsoft.Bcl.Async.1.0.168\lib\portable-net45+win8+wpa81\Microsoft.Threading.Tasks.dll
2>      C:\MyProject\packages\Microsoft.Bcl.Async.1.0.168\lib\portable-net45+win8+wpa81\Microsoft.Threading.Tasks.Extensions.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v6.0\Mono.Android.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v6.0\Mono.Android.Export.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\mscorlib.dll
2>      C:\MyProject\packages\Newtonsoft.Json.8.0.3\lib\portable-net45+wp80+win8+wpa81+dnxcore50\Newtonsoft.Json.dll
2>      C:\MyProject\packages\refit.2.4.1\lib\MonoAndroid\Refit.dll
2>      C:\MyProject\packages\SQLite.Net.Core-PCL.3.1.1\lib\portable-win8+net45+wp8+wpa81+MonoAndroid1+MonoTouch1\SQLite.Net.dll
2>      C:\MyProject\packages\SQLite.Net-PCL.3.1.1\lib\MonoAndroid\SQLite.Net.Platform.XamarinAndroid.dll
2>      C:\MyProject\packages\Square.OkHttp.2.7.5.0\lib\MonoAndroid\Square.OkHttp.dll
2>      C:\MyProject\packages\Square.OkIO.1.6.0.0\lib\MonoAndroid\Square.OkIO.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\System.Core.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\System.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\System.Net.Http.dll
2>      C:\MyProject\packages\Microsoft.Net.Http.2.2.29\lib\monoandroid\System.Net.Http.Extensions.dll
2>      C:\MyProject\packages\Microsoft.Net.Http.2.2.29\lib\monoandroid\System.Net.Http.Primitives.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Runtime.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\System.Xml.dll
2>      C:\MyProject\packages\Xamarin.Bindings.UniversalImageLoader.1.0.4\lib\MonoAndroid\UniversalImageLoader.dll
2>      C:\MyProject\packages\Xamarin.Android.Support.Animated.Vector.Drawable.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.Animated.Vector.Drawable.dll
2>      C:\MyProject\packages\Xamarin.Android.Support.Design.23.3.0\lib\MonoAndroid43\Xamarin.Android.Support.Design.dll
2>      C:\MyProject\packages\Xamarin.Android.Support.Percent.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.Percent.dll
2>      C:\MyProject\packages\Xamarin.Android.Support.v13.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.v13.dll
2>      C:\MyProject\packages\Xamarin.Android.Support.v4.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.v4.dll
2>      C:\MyProject\packages\Xamarin.Android.Support.v7.AppCompat.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.v7.AppCompat.dll
2>      C:\MyProject\packages\Xamarin.Android.Support.v7.CardView.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.v7.CardView.dll
2>      C:\MyProject\packages\Xamarin.Android.Support.v7.MediaRouter.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.v7.MediaRouter.dll
2>      C:\MyProject\packages\Xamarin.Android.Support.v7.RecyclerView.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.v7.RecyclerView.dll
2>      C:\MyProject\packages\Xamarin.Android.Support.Vector.Drawable.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.Vector.Drawable.dll
2>      C:\MyProject\packages\Xamarin.GooglePlayServices.Analytics.29.0.0\lib\MonoAndroid41\Xamarin.GooglePlayServices.Analytics.dll
2>      C:\MyProject\packages\Xamarin.GooglePlayServices.Base.29.0.0\lib\MonoAndroid41\Xamarin.GooglePlayServices.Base.dll
2>      C:\MyProject\packages\Xamarin.GooglePlayServices.Basement.29.0.0\lib\MonoAndroid41\Xamarin.GooglePlayServices.Basement.dll
2>      C:\MyProject\packages\Xamarin.GooglePlayServices.Gcm.29.0.0\lib\MonoAndroid41\Xamarin.GooglePlayServices.Gcm.dll
2>      C:\MyProject\packages\Xamarin.GooglePlayServices.Location.29.0.0\lib\MonoAndroid41\Xamarin.GooglePlayServices.Location.dll
2>      C:\MyProject\packages\Xamarin.GooglePlayServices.Maps.29.0.0\lib\MonoAndroid41\Xamarin.GooglePlayServices.Maps.dll
2>      C:\MyProject\packages\Xamarin.GooglePlayServices.Measurement.29.0.0\lib\MonoAndroid41\Xamarin.GooglePlayServices.Measurement.dll
2>      C:\MyProject\packages\Xamarin.Insights.1.12.3\lib\MonoAndroid10\Xamarin.Insights.dll
2>      C:\MyProject\packages\ZXing.Net.Mobile.2.0.4.46\lib\MonoAndroid403\ZXing.Net.Mobile.Core.dll
2>      C:\MyProject\packages\ZXing.Net.Mobile.2.0.4.46\lib\MonoAndroid403\zxing.portable.dll
2>      C:\MyProject\packages\ZXing.Net.Mobile.2.0.4.46\lib\MonoAndroid403\ZXingNetMobile.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Collections.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Reflection.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Text.RegularExpressions.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Threading.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Threading.Tasks.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Diagnostics.Debug.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Linq.Expressions.dll
2>      C:\MyProject\bin\Release\SQLiteNetExtensions.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.IO.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Diagnostics.Tools.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Resources.ResourceManager.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Globalization.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Runtime.Serialization.Primitives.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Linq.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Runtime.Extensions.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Reflection.Extensions.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Net.Primitives.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Text.Encoding.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\System.Net.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Runtime.InteropServices.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Xml.XDocument.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Dynamic.Runtime.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.ObjectModel.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Xml.ReaderWriter.dll
2>      C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades\System.Text.Encoding.Extensions.dll
2>      C:\Windows\Microsoft.Net\assembly\GAC_MSIL\Microsoft.CSharp\v4.0_4.0.0.0__b03f5f7f11d50a3a\Microsoft.CSharp.dll
2>      C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System\v4.0_4.0.0.0__b77a5c561934e089\System.dll
2>      C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Core\v4.0_4.0.0.0__b77a5c561934e089\System.Core.dll
2>      C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Dynamic\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Dynamic.dll
2>      C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Configuration\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll
2>      C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Xml\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.dll
2>      C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Numerics\v4.0_4.0.0.0__b77a5c561934e089\System.Numerics.dll
2>      C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Security\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Security.dll
2>      C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Data.SqlXml\v4.0_4.0.0.0__b77a5c561934e089\System.Data.SqlXml.dll
2>C:\Program Files (x86)\MSBuild\Xamarin\Android\Xamarin.Android.Common.targets(387,2): error : The specified path, file name, or both are too long. The fully qualified file name must be less than 260 characters, and the directory name must be less than 248 characters.
2>    AdditionalAndroidResourcePaths: 
2>    AdditionalJavaLibraryReferences: 
2>    AdditionalNativeLibraryReferences: 
2>Done executing task "GetAdditionalResourcesFromAssemblies" -- FAILED.
2>Done building target "_BuildAdditionalResourcesCache" in project "MyProject.Droid.csproj" -- FAILED.

Answer 1

编辑您的 Android 项目文件并添加 IntermediateOutputPath 属性以将该项目的输出重定向到较短的路径(可以是绝对路径或相对路径)。

<IntermediateOutputPath>..\..\shorter-path</IntermediateOutputPath>

来源:http://shaneneuville.com/xamarin/android/msbuild/2017/05/06/file-name-too-long.html