Question

如何解决“软件包MvvmCross 6.4.1不兼容”错误？我正在使用NETPortable，Version = v4.6，Profile = Profile44。

以下是诊断日志：

Estou tentando atualizar o package do MvvmCross para o 6.4.1 em projeto PCL com o visual Studio for Mac:
*"Package MvvmCross 6.4.1 is not compatible with portable46-net451+win81 (.NETPortable,Version=v4.6,Profile=Profile44). Package MvvmCross 6.4.1 supports"*

Visual Studio detials:
"Visual Studio Community 2019 for Mac
Version 8.3.11 (build 1)
Installation UUID: 358942d8-ccc4-4e01-be4d-8b50089ff31c
GTK+ 2.24.23 (Raleigh theme)
Xamarin.Mac 5.16.1.24 (d16-3 / 08809f5b)

Package version: 604000208

Mono Framework MDK
Runtime:
Mono 6.4.0.208 (2019-06/07c23f2ca43) (64-bit)
Package version: 604000208

Xamarin Designer
Version: 16.3.0.256
Hash: 8a223bfd7
Branch: remotes/origin/d16-3
Build date: 2019-11-01 21:02:02 UTC

NuGet
Version: 5.3.0.6192

.NET Core SDK
SDK: /usr/local/share/dotnet/sdk/3.0.101/Sdks
SDK Versions:
3.0.101
3.0.100
MSBuild SDKs: /Library/Frameworks/Mono.framework/Versions/6.4.0/lib/mono/msbuild/Current/bin/Sdks

.NET Core Runtime
Runtime: /usr/local/share/dotnet/dotnet
Runtime Versions:
3.0.1
3.0.0
2.1.14
2.1.13

Xamarin.Profiler
Version: 1.6.12.29
Location: /Applications/Xamarin Profiler.app/Contents/MacOS/Xamarin Profiler

Updater
Version: 11

Apple Developer Tools
Xcode 11.2.1 (15526.1)
Build 11B53

Xamarin.Mac
Version: 6.6.0.12 (Visual Studio Community)
Hash: e3c2b406d
Branch: xcode11.2
Build date: 2019-11-01 00:12:07-0400

Xamarin.iOS
Version: 13.6.0.12 (Visual Studio Community)
Hash: e3c2b406d
Branch: xcode11.2
Build date: 2019-11-01 00:12:08-0400

Xamarin.Android
Not Installed

Microsoft Mobile OpenJDK
Java SDK: /Users/iterative/Library/Developer/Xamarin/jdk/microsoft_dist_openjdk_1.8.0.25
1.8.0-25
Android Designer EPL code available here:
https://github.com/xamarin/AndroidDesigner.EPL

Android SDK Manager
Version: 1.4.0.65
Hash: c33b107
Branch: remotes/origin/d16-3
Build date: 2019-11-19 20:33:22 UTC

Android Device Manager
Version: 1.2.0.116
Hash: d2b2af0
Branch: remotes/origin/d16-3
Build date: 2019-11-19 20:33:42 UTC

Xamarin Inspector
Version: 1.4.3
Hash: db27525
Branch: 1.4-release
Build date: Mon, 09 Jul 2018 21:20:18 GMT
Client compatibility: 1

Build Information
Release ID: 803110001
Git revision: 6ee6ad2ec46ae5a08a1999ee4c815ac656a35b91
Build date: 2019-12-05 16:09:27+00
Build branch: release-8.3
Xamarin extensions: 56bd70ef2e327f71c615cfc29a47fd50685fadcb

Operating System
Mac OS X 10.14.6
Darwin 18.7.0 Darwin Kernel Version 18.7.0
    Tue Aug 20 16:57:14 PDT 2019
    root:xnu-4903.271.2~2/RELEASE_X86_64 x86_64"

Answer 1

欢迎您！

出现此错误的原因是，您尝试添加的Nuget软件包的版本与项目的目标框架不兼容。您有两种选择：

您必须将项目转换为使用PCL的.NET Standard，如here所示。如果您的解决方案又大又旧，可能会很痛苦。我个人建议从空白的.NET Standard项目开始，并从现有项目中每次引入一个项目。
或者您必须使用较低版本的MVVMCross。

我建议您不要使用第二个选项，因为较低的MVVMCross软件包不支持Android Target Framework 10.0，并且在不久的将来会给您带来麻烦。

无法使用Xamarin的PCL项目更新MvvmCross 6.4.1

1 个答案: