“Android构建工具”在Xamarin上的过时错误

Question

当我创建一个Xamarin项目并构建Droid的时候.但是当我使用控制台添加任何nuget包时，例如：

Install Acr.UserDialogs或Install Rg.Plugins.Popup它在控制台上向我展示了以下内容：

PM> Install-Package Acr.UserDialogs
Attempting to gather dependencies information for package 'Acr.UserDialogs.6.1.1' with respect to project 'TestAcrDialogs.Droid', targeting 'MonoAndroid,Version=v7.0'
Attempting to resolve dependencies for package 'Acr.UserDialogs.6.1.1' with DependencyBehavior 'Lowest'
Resolving actions to install package 'Acr.UserDialogs.6.1.1'
Resolved actions to install package 'Acr.UserDialogs.6.1.1'
Removed package 'Xamarin.Android.Support.Design.23.0.1.3' from 'packages.config'
Successfully uninstalled 'Xamarin.Android.Support.Design.23.0.1.3' from TestAcrDialogs.Droid
Removed package 'Xamarin.Android.Support.v4.23.0.1.3' from 'packages.config'
Successfully uninstalled 'Xamarin.Android.Support.v4.23.0.1.3' from TestAcrDialogs.Droid
Removed package 'Xamarin.Android.Support.v7.AppCompat.23.0.1.3' from 'packages.config'
Successfully uninstalled 'Xamarin.Android.Support.v7.AppCompat.23.0.1.3' from TestAcrDialogs.Droid
Removed package 'Xamarin.Android.Support.v7.CardView.23.0.1.3' from 'packages.config'
Successfully uninstalled 'Xamarin.Android.Support.v7.CardView.23.0.1.3' from TestAcrDialogs.Droid
Removed package 'Xamarin.Android.Support.v7.MediaRouter.23.0.1.3' from 'packages.config'
Successfully uninstalled 'Xamarin.Android.Support.v7.MediaRouter.23.0.1.3' from TestAcrDialogs.Droid
Removed package 'Xamarin.Forms.2.0.0.6482' from 'packages.config'
Successfully uninstalled 'Xamarin.Forms.2.0.0.6482' from TestAcrDialogs.Droid
Adding package 'Acr.Support.2.1.0' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Acr.Support.2.1.0' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Acr.Support.2.1.0' to 'packages.config'
Successfully installed 'Acr.Support 2.1.0' to TestAcrDialogs.Droid
Adding package 'AndHUD.1.2.0' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'AndHUD.1.2.0' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'AndHUD.1.2.0' to 'packages.config'
Successfully installed 'AndHUD 1.2.0' to TestAcrDialogs.Droid
Adding package 'Splat.1.6.2' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Splat.1.6.2' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Splat.1.6.2' to 'packages.config'
Successfully installed 'Splat 1.6.2' to TestAcrDialogs.Droid
Adding package 'Xamarin.Android.Support.v4.23.3.0' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Xamarin.Android.Support.v4.23.3.0' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Xamarin.Android.Support.v4.23.3.0' to 'packages.config'
Successfully installed 'Xamarin.Android.Support.v4 23.3.0' to TestAcrDialogs.Droid
Adding package 'Xamarin.Android.Support.v7.CardView.23.3.0' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Xamarin.Android.Support.v7.CardView.23.3.0' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Xamarin.Android.Support.v7.CardView.23.3.0' to 'packages.config'
Successfully installed 'Xamarin.Android.Support.v7.CardView 23.3.0' to TestAcrDialogs.Droid
Adding package 'Xamarin.Android.Support.v7.RecyclerView.23.3.0' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Xamarin.Android.Support.v7.RecyclerView.23.3.0' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Xamarin.Android.Support.v7.RecyclerView.23.3.0' to 'packages.config'
Successfully installed 'Xamarin.Android.Support.v7.RecyclerView 23.3.0' to TestAcrDialogs.Droid
Adding package 'Xamarin.Android.Support.Vector.Drawable.23.3.0' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Xamarin.Android.Support.Vector.Drawable.23.3.0' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Xamarin.Android.Support.Vector.Drawable.23.3.0' to 'packages.config'
Successfully installed 'Xamarin.Android.Support.Vector.Drawable 23.3.0' to TestAcrDialogs.Droid
Adding package 'Xamarin.Android.Support.Animated.Vector.Drawable.23.3.0' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Xamarin.Android.Support.Animated.Vector.Drawable.23.3.0' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Xamarin.Android.Support.Animated.Vector.Drawable.23.3.0' to 'packages.config'
Successfully installed 'Xamarin.Android.Support.Animated.Vector.Drawable 23.3.0' to TestAcrDialogs.Droid
Adding package 'Xamarin.Android.Support.v7.AppCompat.23.3.0' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Xamarin.Android.Support.v7.AppCompat.23.3.0' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Xamarin.Android.Support.v7.AppCompat.23.3.0' to 'packages.config'
Successfully installed 'Xamarin.Android.Support.v7.AppCompat 23.3.0' to TestAcrDialogs.Droid
Adding package 'Xamarin.Android.Support.Design.23.3.0' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Xamarin.Android.Support.Design.23.3.0' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Xamarin.Android.Support.Design.23.3.0' to 'packages.config'
Successfully installed 'Xamarin.Android.Support.Design 23.3.0' to TestAcrDialogs.Droid
Adding package 'Acr.UserDialogs.6.1.1' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Acr.UserDialogs.6.1.1' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Acr.UserDialogs.6.1.1' to 'packages.config'
Successfully installed 'Acr.UserDialogs 6.1.1' to TestAcrDialogs.Droid
Adding package 'Xamarin.Android.Support.v7.MediaRouter.23.3.0' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Xamarin.Android.Support.v7.MediaRouter.23.3.0' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Xamarin.Android.Support.v7.MediaRouter.23.3.0' to 'packages.config'
Successfully installed 'Xamarin.Android.Support.v7.MediaRouter 23.3.0' to TestAcrDialogs.Droid
Adding package 'Xamarin.Forms.2.2.0.31' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Xamarin.Forms.2.2.0.31' to folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Added package 'Xamarin.Forms.2.2.0.31' to 'packages.config'
Successfully installed 'Xamarin.Forms 2.2.0.31' to TestAcrDialogs.Droid
Removing package 'Xamarin.Android.Support.Design.23.0.1.3' from folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Removed package 'Xamarin.Android.Support.Design.23.0.1.3' from folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Removing package 'Xamarin.Android.Support.v4.23.0.1.3' from folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Removed package 'Xamarin.Android.Support.v4.23.0.1.3' from folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Removing package 'Xamarin.Android.Support.v7.AppCompat.23.0.1.3' from folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Removed package 'Xamarin.Android.Support.v7.AppCompat.23.0.1.3' from folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Removing package 'Xamarin.Android.Support.v7.CardView.23.0.1.3' from folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Removed package 'Xamarin.Android.Support.v7.CardView.23.0.1.3' from folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Removing package 'Xamarin.Android.Support.v7.MediaRouter.23.0.1.3' from folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'
Removed package 'Xamarin.Android.Support.v7.MediaRouter.23.0.1.3' from folder 'C:\Programming\C#\Cross-Platform Xamarin\New\TestAcrDialogs\packages'

在此之后，我在构建Droid项目时得到了这个错误：

An outdated of 'Android SDK Build-tools' is in use which this version of Android Support Library does not support.  You must uninstall any 'Android SDK Build-tools' versions older than 23.0.0 from the 'Tools' section in your 'Android SDK Manager'      

但是我没有任何旧的构建工具.

Answer 1

我去了SDK文件夹下的Build，我有一个“Androd-6”文件夹，其中包含了Build ver23.0.3，但是由于它的文件夹名，Xamarin采用了一个旧版本。

我删除了它然后所有的事情都变得正确了..。

，所以文件夹名对Xamarin.很重要。

Answer 2

您必须打开并检查您正在使用的工具的哪个版本。如果使用Visual，甚至可以使用Android工具栏上的一个按钮( Android)从IDE中打开它。一旦打开，您就可以看到安装了哪些版本的Android构建工具，以及它们是否与您正在使用的库所需的版本相匹配。

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