Xamarin.forms 无法添加人脸识别服务Nuget

我正在尝试将

Microsoft认知服务Face API

集成到我的

Xamarin表单

应用程序中。我已在PCL中安装了Microsoft.ProjectOxford.Common.DotNetStandard Version=“1.0.0”，

Microsoft.ProjectOxford.Face“Version=“1.4.0”

。但每次尝试编译代码时，都会出现错误

对于iOS，我得到：

xxx.iOS/MTOUCH: Error MT2002: Failed to resolve "Microsoft.ProjectOxford.Face.IFaceServiceClient" reference from "Microsoft.ProjectOxford.Face, Version=1.4.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" (MT2002) 

对于Android，我得到：

    /Library/Frameworks/Mono.framework/External/xbuild/Xamarin/Android/Xamarin.Android.Common.targets(2,2): Error: Exception while loading assemblies: System.IO.FileNotFoundException: Could not load assembly 'Microsoft.ProjectOxford.Face, Version=1.4.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Perhaps it doesn't exist in the Mono for Android profile?
    File name: 'Microsoft.ProjectOxford.Face.dll'
      at Java.Interop.Tools.Cecil.DirectoryAssemblyResolver.Resolve (Mono.Cecil.AssemblyNameReference reference, Mono.Cecil.ReaderParameters parameters) [0x0009a] in /Users/builder/data/lanes/5945/dffc5912/source/monodroid/external/xamarin-android/external/Java.Interop/src/Java.Interop.Tools.Cecil/Java.Interop.Tools.Cecil/DirectoryAssemblyResolver.cs:229 
      at Java.Interop.Tools.Cecil.DirectoryAssemblyResolver.Resolve (Mono.Cecil.AssemblyNameReference reference) [0x00000] in /Users/builder/data/lanes/5945/dffc5912/source/monodroid/external/xamarin-android/external/Java.Interop/src/Java.Interop.Tools.Cecil/Java.Interop.Tools.Cecil/DirectoryAssemblyResolver.cs:179 
      at Xamarin.Android.Tasks.ResolveAssemblies.AddAssemblyReferences (Java.Interop.Tools.Cecil.DirectoryAssemblyResolver resolver, System.Collections.Generic.ICollection`1[T] assemblies, Mono.Cecil.AssemblyDefinition assembly, System.Boolean topLevel) [0x0014a] in <96027da06dd5411688a31011072e256f>:0 
      at Xamarin.Android.Tasks.ResolveAssemblies.Execute (Java.Interop.Tools.Cecil.DirectoryAs

semblyResolver resolver) [0x00237] in <96027da06dd5411688a31011072e256f>:0  

/Library/Frameworks/Mono.framework/External/xbuild/Xamarin/Android/Xamarin.Android.Common.targets（2,2）：错误：加载程序集时出现异常：System.IO.FileNotFoundException:无法加载程序集“Microsoft.ProjectOxford.Face，版本=1.4.0.0，区域性=中性，PublicKeyToken=31bf3856ad364e35”。可能它在Mono for Android配置文件中不存在？
文件名：“Microsoft.ProjectOxford.Face.dll”
位于Java.Interop.Tools.Cecil.directorySassemblyResolver.Resolve（Mono.Cecil.AssemblyNameReference，Mono.Cecil.ReaderParameters参数）[0x0009a]在/Users/builder/data/lanes/5945/dffc5912/source/monodroid/external/xamarin-android/external/Java.Interop/src/Java.Interop.Tools.Cecil/Java.Interop.Tools.Cecil/directorySassemblyResolver.cs:229中
在/Users/builder/data/lanes/5945/dffc5912/source/monodroid/external/xamarin-android/external/Java.Interop/src/Java.Interop.Tools.Cecil/Java.Interop.Tools.Cecil/directorySassemblyResolver.cs:179中的Java.Interop.Tools.directorySassemblyResolver.resolver（Mono.Cecil.AssemblyNameReference）[.0x00000]
在Xamarin.Android.Tasks.ResolveAssemblys.AddAssemblyReferences（Java.Interop.Tools.Cecil.directorySolver解析器，System.Collections.Generic.ICollection`1[T]Assemblys，Mono.Cecil.AssemblyDefinition assembly，System.Boolean topLevel）[0x0014a]中：0
在Xamarin.Android.Tasks.resolvestassemblies.Execute（Java.Interop.Tools.Cecil.DirectoryAs
semblyResolver解析器[0x00237]位于：0

沙马林形态：3.0.0.482510。

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有人能帮忙吗？

我想这就是你的问题所在：

我已经安装了Microsoft.ProjectOxford.Common。DotNetStandard Version=“1.0.0”，Microsoft.ProjectOxford.Face“Version=“1.4.0”在我的 PCL

您正在尝试将一个.NET标准库安装到您的PCL中，该库不保证兼容。您要么想将PCL升级到.NET标准库（无论怎样，这都是一个好主意），要么安装旧版本的NuGet软件包