Introduce $(_AndroidLatestUnstableApiLevel)

Author: jonathanpeppers

src/Xamarin.Android.Build.Tasks/Microsoft.Android.Sdk/in/Microsoft.Android.Sdk.BundledVersions.in.targets

@@ -11,15 +11,15 @@ WARNING:  DO NOT MODIFY this file unless you are knowledgeable about MSBuild and
     <AndroidNETSdkVersion>@ANDROID_PACK_VERSION_LONG@</AndroidNETSdkVersion>
     <XamarinAndroidVersion>@ANDROID_PACK_VERSION_LONG@</XamarinAndroidVersion>
     <_AndroidLatestStableApiLevel>@ANDROID_LATEST_STABLE_API_LEVEL@</_AndroidLatestStableApiLevel>
+    <_AndroidLatestUnstableApiLevel>@ANDROID_LATEST_UNSTABLE_API_LEVEL@</_AndroidLatestUnstableApiLevel>
   </PropertyGroup>
   <PropertyGroup>
     <_AndroidTargetingPackId Condition="$(TargetPlatformVersion.EndsWith('.0'))">$(TargetPlatformVersion.Substring(0, $(TargetPlatformVersion.LastIndexOf('.0'))))</_AndroidTargetingPackId>
     <_AndroidTargetingPackId Condition="'$(_AndroidTargetingPackId)' == ''">$(TargetPlatformVersion)</_AndroidTargetingPackId>
-    <!-- NOTE: adjust if a TargetFramework supports multiple API levels -->
-    <_AndroidErrorOnTargetPlatformVersion Condition=" '$(_AndroidTargetingPackId)' != '$(_AndroidLatestStableApiLevel)' ">$(_AndroidTargetingPackId)</_AndroidErrorOnTargetPlatformVersion>
-    <_AndroidTargetingPackId Condition=" '$(_AndroidTargetingPackId)' != '$(_AndroidLatestStableApiLevel)' ">$(_AndroidLatestStableApiLevel)</_AndroidTargetingPackId>
+    <_AndroidErrorOnTargetPlatformVersion Condition=" '$(_AndroidTargetingPackId)' != '$(_AndroidLatestStableApiLevel)' and '$(_AndroidTargetingPackId)' != '$(_AndroidLatestUnstableApiLevel)' ">$(_AndroidTargetingPackId)</_AndroidErrorOnTargetPlatformVersion>
+    <_AndroidTargetingPackId Condition=" '$(_AndroidTargetingPackId)' != '$(_AndroidLatestStableApiLevel)' and '$(_AndroidTargetingPackId)' != '$(_AndroidLatestUnstableApiLevel)' ">$(_AndroidLatestStableApiLevel)</_AndroidTargetingPackId>
     <_AndroidRuntimePackId Condition=" '$(_AndroidRuntimePackId)' == '' ">$(_AndroidTargetingPackId)</_AndroidRuntimePackId>
-    <_AndroidRuntimePackId Condition=" '$(_AndroidRuntimePackId)' != '$(_AndroidLatestStableApiLevel)' ">$(_AndroidLatestStableApiLevel)</_AndroidRuntimePackId>
+    <_AndroidRuntimePackId Condition=" '$(_AndroidRuntimePackId)' != '$(_AndroidLatestStableApiLevel)' and '$(_AndroidRuntimePackId)' != '$(_AndroidLatestUnstableApiLevel)' ">$(_AndroidLatestStableApiLevel)</_AndroidRuntimePackId>
   </PropertyGroup>
   <ItemGroup>
     <KnownFrameworkReference

src/Xamarin.Android.Build.Tasks/Xamarin.Android.Build.Tasks.targets

@@ -360,7 +360,7 @@
     <ReplaceFileContents
         SourceFile="$(MSBuildThisFileDirectory)Microsoft.Android.Sdk\in\Microsoft.Android.Sdk.BundledVersions.in.targets"
         DestinationFile="$(MSBuildThisFileDirectory)\Microsoft.Android.Sdk\targets\Microsoft.Android.Sdk.BundledVersions.targets"
-        Replacements="@ANDROID_PACK_VERSION_LONG@=$(AndroidPackVersionLong);@ANDROID_LATEST_STABLE_API_LEVEL@=$(AndroidLatestStableApiLevel);@DOTNET_TARGET_FRAMEWORK@=$(DotNetTargetFramework)" >
+        Replacements="@ANDROID_PACK_VERSION_LONG@=$(AndroidPackVersionLong);@ANDROID_LATEST_STABLE_API_LEVEL@=$(AndroidLatestStableApiLevel);@ANDROID_LATEST_UNSTABLE_API_LEVEL@=$(AndroidLatestUnstableApiLevel);@DOTNET_TARGET_FRAMEWORK@=$(DotNetTargetFramework)" >
     </ReplaceFileContents>
   </Target>