[Mono.Android] Bind Android 12L Beta 1. (dotnet#6601)

Context: https://developer.android.com/about/versions/12/12L
Context: https://android-developers.googleblog.com/2021/12/beta-1-update-for-12l-feature-drop.html

Android 12L Developer Beta 1 has been released.

  * [API diff vs. API-31][0]
  * [API diff vs. Sv2 DP1][1]

The Android 12L Developer Preview Program Overview
[Timeline and updates][2] section suggests the following timeline
(which differs from ef01121):

  * October:    Developer Preview 1
  * December:   Beta 1; Final APIs (previously expected in Beta 2)
  * January:    Beta 2; Incremental beta update
  * February:   Beta 3; Incremental beta update
  * Q1 2022:    Final release

In particular, Beta 1 has "Final APIs".  We now have API-32!

Enumify API-32, and declare it stable.

As a change from "upstream Google", Classic Xamarin.Android uses
`$(TargetFrameworkVersion)`=v12.1 for API-32, as there is no way to
express "12L" in a `System.Version`.  We have decreed 12.1 as 12L.

.NET SDK for Android uses `$(TargetFramework)`=net6.0-android32.0.

However, we don't want to change the default API level for .NET 6
projects; the default will remain `net6.0-android31.0` (API-31),
using the [31.0.101-preview.11.117 binaries on NuGet.org][3].
This requires various changes to the unit test infrastructure and
.NET SDK workflow package creation.

Additionally, `d8` doesn't appear to support API-32 yet (?!);
building an app with an `AndroidManifest.xml` containing:

	<uses-sdk android:minSdkVersion="32" android:targetSdkVersion="32" />

would use `d8 --min-api 32`, which results in a warning:

	D8 : warning : An API level of 32 is not supported by this compiler.
	Please use an API level of 31 or earlier

Update the `XASdkTests.SupportedOSPlatformVersion()` test so that it
only uses API-31 and not API-32.  This avoids the above warning.

Finally, we had to update xaprepare to install the new
Android SDK Build-tools version 32.0.0, as `aapt` from previous
Build-tools versions would emit a warning when building for API-32:

	Xamarin.Android.Aapt2.targets(157,3): warning APT2000: aapt2 W 01-05 23:58:06  8352 43857 LoadedArsc.cpp:657] Unknown chunk type '200'.

Unfortunately, installing Build-tools 32.0.0 promptly broke unit
tests using `$(AndroidDexTool)`=dx, with:

	COMPILETODALVIK : error : Unable to access jarfile C:\…\android-toolchain\sdk\build-tools\32.0.0\lib\dx.jar

as Build-tools 31 and later no longer contains `lib/dx.jar`.  Update
xaprepare to install *both* Build-tools 30.0.3 *and* 32.0.0, so that
tests which require `dx.jar` continue to run, and we can get *some*
test coverage against Build-tools 32.

Co-authored-by: Jonathan Peppers <jonathan.peppers@microsoft.com>

[0]: https://developer.android.com/sdk/api_diff/32/changes
[1]: https://developer.android.com/sdk/api_diff/32-incr/changes
[2]: https://web.archive.org/web/20220113142518/https://developer.android.com/about/versions/12/12L/overview
[3]: https://www.nuget.org/packages/Microsoft.Android.Ref.31/31.0.101-preview.11.117

Configuration.Override.props.in

@@ -6,11 +6,11 @@
       kept consistent with each other, lest Bad Things Happen™
       -->
     <!-- The default Android API level to bind in src/Mono.Android -->
-    <AndroidApiLevel>31</AndroidApiLevel>
+    <AndroidApiLevel>32</AndroidApiLevel>
     <!-- The Xamarin.Android $(TargetFrameworkVersion) value that corresponds to $(AndroidApiLevel) -->
-    <AndroidFrameworkVersion>v12.0</AndroidFrameworkVersion>
+    <AndroidFrameworkVersion>v12.1</AndroidFrameworkVersion>
     <!-- The default Android API "id" that corresponds to $(AndroidApiLevel) -->
-    <AndroidPlatformId>31</AndroidPlatformId>
+    <AndroidPlatformId>32</AndroidPlatformId>
 
     <!--
       Colon-separated list of ABIs to build the mono JIT for.

Configuration.props

@@ -26,17 +26,19 @@
     <AndroidFirstFrameworkVersion Condition="'$(AndroidFirstFrameworkVersion)' == ''">v4.4</AndroidFirstFrameworkVersion>
     <AndroidFirstApiLevel Condition="'$(AndroidFirstApiLevel)' == ''">19</AndroidFirstApiLevel>
     <AndroidJavaRuntimeApiLevel Condition="'$(AndroidJavaRuntimeApiLevel)' == ''">21</AndroidJavaRuntimeApiLevel>
+    <!-- The default API level used for $(TargetPlatformVersion) -->
+    <AndroidDefaultTargetDotnetApiLevel Condition="'$(AndroidDefaultTargetDotnetApiLevel)' == ''">31</AndroidDefaultTargetDotnetApiLevel>
     <!-- The min API level supported by Microsoft.Android.Sdk, should refactor/remove when this value is the same as $(AndroidFirstApiLevel) -->
     <AndroidMinimumDotNetApiLevel Condition="'$(AndroidMinimumDotNetApiLevel)' == ''">21</AndroidMinimumDotNetApiLevel>
     <AndroidFirstPlatformId Condition="'$(AndroidFirstPlatformId)' == ''">$(AndroidFirstApiLevel)</AndroidFirstPlatformId>
     <!-- *Latest* *stable* API level binding that we support; used when building src/Xamarin.Android.Build.Tasks -->
-    <AndroidLatestStableApiLevel Condition="'$(AndroidLatestStableApiLevel)' == ''">31</AndroidLatestStableApiLevel>
+    <AndroidLatestStableApiLevel Condition="'$(AndroidLatestStableApiLevel)' == ''">32</AndroidLatestStableApiLevel>
     <AndroidLatestStablePlatformId Condition="'$(AndroidLatestStablePlatformId)' == ''">$(AndroidLatestStableApiLevel)</AndroidLatestStablePlatformId>
-    <AndroidLatestStableFrameworkVersion Condition="'$(AndroidLatestStableFrameworkVersion)'==''">v12.0</AndroidLatestStableFrameworkVersion>
+    <AndroidLatestStableFrameworkVersion Condition="'$(AndroidLatestStableFrameworkVersion)'==''">v12.1</AndroidLatestStableFrameworkVersion>
     <!-- *Latest* *unstable* API level binding that we support; this can be the same as *stable* -->
     <AndroidLatestUnstableApiLevel Condition="'$(AndroidLatestUnstableApiLevel)' == ''">32</AndroidLatestUnstableApiLevel>
-    <AndroidLatestUnstablePlatformId Condition="'$(AndroidLatestUnstablePlatformId)' == ''">Sv2</AndroidLatestUnstablePlatformId>
-    <AndroidLatestUnstableFrameworkVersion Condition="'$(AndroidLatestUnstableFrameworkVersion)'==''">v12.0.99</AndroidLatestUnstableFrameworkVersion>
+    <AndroidLatestUnstablePlatformId Condition="'$(AndroidLatestUnstablePlatformId)' == ''">32</AndroidLatestUnstablePlatformId>
+    <AndroidLatestUnstableFrameworkVersion Condition="'$(AndroidLatestUnstableFrameworkVersion)'==''">v12.1</AndroidLatestUnstableFrameworkVersion>
     <!-- The API level and TargetFrameworkVersion for the default Mono.Android.dll build -->
     <AndroidApiLevel Condition=" '$(AndroidApiLevel)' == '' ">$(AndroidLatestStableApiLevel)</AndroidApiLevel>
     <AndroidPlatformId Condition=" '$(AndroidPlatformId)' == '' ">$(AndroidLatestStablePlatformId)</AndroidPlatformId>
@@ -118,16 +120,24 @@
     <AllSupported64BitTargetAndroidAbis>arm64-v8a;x86_64</AllSupported64BitTargetAndroidAbis>
     <AllSupportedTargetAndroidAbis>$(AllSupported32BitTargetAndroidAbis);$(AllSupported64BitTargetAndroidAbis)</AllSupportedTargetAndroidAbis>
     <!--
-      For some reason, the URL for platform-tools/build-tools 30.0.3 is prefixed with what appears to be a GIT commit hash or some other checksum...
+      For some reason, the URL for platform-tools/build-tools 32.0.0 is prefixed with what appears to be a GIT commit hash or some other checksum...
       Linux packages don't have any prefix, but this forces us to have *some* mechanism to handle this...
     -->
-    <XABuildToolsPackagePrefixMacOS>f6d24b187cc6bd534c6c37604205171784ac5621.</XABuildToolsPackagePrefixMacOS>
-    <XABuildToolsPackagePrefixWindows>91936d4ee3ccc839f0addd53c9ebf087b1e39251.</XABuildToolsPackagePrefixWindows>
+    <XABuildToolsPackagePrefixMacOS>5219cc671e844de73762e969ace287c29d2e14cd.</XABuildToolsPackagePrefixMacOS>
+    <XABuildToolsPackagePrefixWindows>210b77e4bc623bd4cdda4dae790048f227972bd2.</XABuildToolsPackagePrefixWindows>
     <XABuildToolsPackagePrefixLinux></XABuildToolsPackagePrefixLinux>
     <XABuildToolsPackagePrefix Condition=" '$(HostOS)' == 'Darwin' ">$(XABuildToolsPackagePrefixMacOS)</XABuildToolsPackagePrefix>
     <XABuildToolsPackagePrefix Condition=" '$(HostOS)' == 'Windows' ">$(XABuildToolsPackagePrefixWindows)</XABuildToolsPackagePrefix>
-    <XABuildToolsVersion>30.0.3</XABuildToolsVersion>
-    <XABuildToolsFolder Condition="'$(XABuildToolsFolder)' == ''">30.0.3</XABuildToolsFolder>
+    <XABuildToolsVersion>32</XABuildToolsVersion>
+    <XABuildToolsFolder Condition="'$(XABuildToolsFolder)' == ''">32.0.0</XABuildToolsFolder>
+    <!-- build-tools 30, for DX tests -->
+    <XABuildTools30PackagePrefixMacOS>f6d24b187cc6bd534c6c37604205171784ac5621.</XABuildTools30PackagePrefixMacOS>
+    <XABuildTools30PackagePrefixWindows>91936d4ee3ccc839f0addd53c9ebf087b1e39251.</XABuildTools30PackagePrefixWindows>
+    <XABuildTools30PackagePrefixLinux></XABuildTools30PackagePrefixLinux>
+    <XABuildTools30PackagePrefix Condition=" '$(HostOS)' == 'Darwin' ">$(XABuildTools30PackagePrefixMacOS)</XABuildTools30PackagePrefix>
+    <XABuildTools30PackagePrefix Condition=" '$(HostOS)' == 'Windows' ">$(XABuildTools30PackagePrefixWindows)</XABuildTools30PackagePrefix>
+    <XABuildTools30Version>30.0.3</XABuildTools30Version>
+    <XABuildTools30Folder Condition="'$(XABuildTools30Folder)' == ''">30.0.3</XABuildTools30Folder>
     <XAPlatformToolsPackagePrefix Condition=" '$(HostOS)' == 'Darwin' ">e8b2b4cbe47c728c1e54c5f524440b52d4e1a33c.</XAPlatformToolsPackagePrefix>
     <XAPlatformToolsVersion>31.0.3</XAPlatformToolsVersion>
     <XAIncludeProprietaryBits Condition="'$(XAIncludeProprietaryBits)' == ''">False</XAIncludeProprietaryBits>

Documentation/workflow/HowToAddNewApiLevel.md

@@ -54,13 +54,174 @@ acceptable "breaks":
 
 When Google announces that the APIs are frozen, additional work such as enumification is needed.
 
----- Somewhat outdated docs below, update when we do this year's stabilization ----
+There have been many, many attempts to "automate" the enumification process in the past, to varying
+degrees of success.  The main problem is that no automated process is going to be perfect, so
+they all rely on a human verifying and modifying the results.
+
+However this verification process is long and tedious.  Doing it correctly requires almost as much
+effort as doing the full process manually.  Thus it generally isn't done correctly and many errors
+slip in, leaving our users with bad bindings that are hard to fix in the future without breaking API.
+
+Currently we have taken the opposite approach and do the process completely manually, but we 
+have invested in tooling to make the process as easy as possible.
+
+This tooling is BindingStudio:
+https://github.com/jpobst/BindingStudio
+
+It's a Winforms app, so it only runs on Windows.  It's ugly as sin, and has very poor UX.  However,
+it prompts you with the exact decisions you need to make, and handles as much dirty work as possible,
+allowing enumification to be done in a few days.
+
+### Extract constants from API
+
+Using BindingStudio:
+
+- Update `CURRENT_API_LEVEL` in MainForm.cs
+- Choose `Tools` -> `Add API Level Constants`
+  - Fill in existing `map.csv`: `xamarin-android/src/Mono.Android/map.csv`
+  - Fill in new `api.xml`: ex: `xamarin-android/src/Mono.Android/obj/Debug/net6.0/android-32/mcw/api.xml`
+- Choose `File` -> `Save`
+
+This adds all the new possible constants from the API level to `map.csv`.  They will be
+marked with a `?` indicating no determination has been made if they should be enumified or not.
+
+Example:
+```
+?,32,android/media/Spatializer.SPATIALIZER_IMMERSIVE_LEVEL_MULTICHANNEL,1,,,,
+?,32,android/media/Spatializer.SPATIALIZER_IMMERSIVE_LEVEL_NONE,0,,,,
+?,32,android/media/Spatializer.SPATIALIZER_IMMERSIVE_LEVEL_OTHER,-1,,,,
+```
+
+### Creating enums
+
+Using BindingStudio:
+
+- Choose `File` -> `Open Constant Map`
+- Choose existing `map.csv`: `xamarin-android/src/Mono.Android/map.csv`
+
+The left tree view will be populated with every type that has possible constants that require
+a decision.  Clicking a tree node will show the grid of all constants in the type.  The ones 
+that need to be handled are the ones with `Action` = `None`.  (The others are shown because
+sometimes the correct action is to add a new constant to an existing enum.)
+
+Select the row(s) containing the constants you want to act on.  (Use Control and Shift to select
+multiple rows.)  There are 3 possible options for constants:
+
+1) Ignore
+
+If the constant(s) should not be part of an enum (like `Math.PI`), click the `Ignore` toolbar 
+button to leave them as constants.
+
+2) Add to existing enum
+
+If the constant(s) should be added to an existing enum:
+- Click the `Add to existing enum` toolbar button.
+- The dialog will show all other enums in this type
+- Choose the existing enum to add the new constant(s) to
+- After accepting the dialog, you may need to click the grid to cause it to refresh
+- The constant(s) will be marked as `Enumify` with the `EnumFullType` you specified
+- The enum member names may need to be tweaked by changing the `EnumMember` column
+
+3) Create a new enum
+
+If the constant(s) should be added to a brand new enum:
+- Click the `Create Enum` toolbar button
+- In the dialog, a suggested enum namespace and name will be pre-populated. This may need to be
+  tweaked as needed.
+  - Mark `Is Flags` if this should be a `[Flags]` enum type.
+- After accepting the dialog, you may need to click the grid to cause it to refresh
+- The constant(s) will be marked as `Enumify` with the `EnumFullType` you specified
+- The enum member names may need to be tweaked by changing the `EnumMember` column
+
+Once decisions have been made for all new constants in a type, use the left tree view to move
+to the next type.  You should periodically save your progress with `File` -> `Save` in case
+BindingStudio crashes.
+
+The left tree view can be updated by saving and reopening the `map.csv` file.
+
+### Extract methods that possibly need enums
 
-5) enumification
+Using BindingStudio:
 
-See `build-tools/enumification-helpers/README`. Usually it takes many days to complete...
+- Update the file paths in `MainForm.FindAPILevelMethodsToolStripMenuItem_Click`
+- Run BindingStudio and choose `Tools` -> `Find API Level Methods`
 
-Enumification work can be delayed and only the final API has to be enumified.
+This will create a file of every method in the new API level that takes an `int` as a parameter
+or returns an `int` as a return value.  Each method will be marked with a `?` in the file
+to indicate a decision needs to be made to ignore it or map it to an enum.
+
+Example:
+```
+?,32,android/media,AudioAttributes,getSpatializationBehavior,return,
+?,32,android/media,AudioAttributes$Builder,setSpatializationBehavior,sb,
+```
+
+### Mapping methods
+
+Using BindingStudio:
+
+- Choose `File` -> `Open Constant Map`
+  - Choose existing `map.csv`: `xamarin-android/src/Mono.Android/map.csv`
+- Choose `File` -> `Open Method Map`
+  - Choose the new `.csv` created in the previous step
+
+The left tree will populate with every method that possibly should be enumified and
+needs a decision to be made.  Clicking a method shows the Android documentation for
+the method to help make the decision, as well as an area to input the decision.
+
+Note a method may show up multiple times, once for each parameter or return type 
+(Parameter Name = "return") that is an int.  Each one may require a different action.
+
+There are 3 possible options for a method parameter/return type:
+
+1) Unknown
+
+You don't how to handle this method currently, so leaving it in the initial state
+of "Unknown" will leave it alone until a decision can be made.
+
+2) Ignore
+
+The method parameter/return type should remain an `int` and not be converted to an enum.
+
+Ex: 
+```
+int Add (int value1, int value2) { ... }
+```
+
+Click the "Ignore" radio button and then the "Save" button.
+
+3) Enumify
+
+The method parameter/return type should be changed to an enum.
+
+Ex:
+```
+void AudioAttributesBuilder.SetSpatializationBehavior (int sb) { ... }
+```
+
+- Choose the "Enumify" radio option
+- Use the DropDown in the middle to select the enum to use
+  - When selected, the members of that enum will be shown in the box below the enum
+- Alternatively, search for a enum by enum member name using the Search box in the right
+  - If desired enum is found, clicking it will populate dropdown
+- Click "Save"
+
+Use `File` -> `Save` to save your work often!
+
+### Finishing the method map
+
+The official `methodmap.csv` uses a slightly different format than the one used for enumification.
+
+Using BindingStudio:
+- Ensure the "new api level method map" CSV file is loaded.
+- Choose `Tools` -> `Export Final Method Map`
+- Choose a temporary file name
+- Open the temporary file, copy the contents to the bottom of the official:
+  - xamarin-android/src/Mono.Android/methodmap.csv
+
+Congrats! Enumification is complete!
+
+---- Somewhat outdated docs below, update when we do this year's stabilization ----
 
 6) new AndroidManifest.xml elements and attributes
 

build-tools/Xamarin.Android.Tools.BootstrapTasks/Xamarin.Android.Tools.BootstrapTasks/CheckApiCompatibility.cs

@@ -29,7 +29,7 @@ public sealed class CheckApiCompatibility : Task
 			{ "v10.0", "v9.0" },
 			{ "v11.0", "v10.0" },
 			{ "v12.0", "v11.0" },
-			{ "v12.0.99", "v12.0" },
+			{ "v12.1", "v12.0" },
 		};
 
 		static readonly string assemblyToValidate = "Mono.Android.dll";

build-tools/Xamarin.Android.Tools.BootstrapTasks/Xamarin.Android.Tools.BootstrapTasks/GenerateSupportedPlatforms.cs

@@ -31,9 +31,15 @@ public class GenerateSupportedPlatforms : Task
 		[Required]
 		public int MinimumApiLevel { get; set; }
 
+		/// <summary>
+		/// Default value for $(TargetPlatformVersion), defaults to MaxStableVersion.ApiLevel
+		/// </summary>
+		public int TargetApiLevel { get; set; }
+
 		public override bool Execute ()
 		{
 			var versions = new AndroidVersions (AndroidApiInfo.Select (ToVersion));
+			int targetApiLevel = TargetApiLevel > 0 ? TargetApiLevel : versions.MaxStableVersion.ApiLevel;
 			var settings = new XmlWriterSettings {
 				OmitXmlDeclaration = true,
 				Indent = true,
@@ -56,7 +62,7 @@ public override bool Execute ()
 				writer.WriteEndElement (); // </TargetPlatformSupported>
 				writer.WriteStartElement ("TargetPlatformVersion");
 				writer.WriteAttributeString ("Condition", " '$(TargetPlatformVersion)' == '' ");
-				writer.WriteString (versions.MaxStableVersion.ApiLevel.ToString ("0.0", CultureInfo.InvariantCulture));
+				writer.WriteString (targetApiLevel.ToString ("0.0", CultureInfo.InvariantCulture));
 				writer.WriteEndElement (); // </TargetPlatformVersion>
 				writer.WriteStartElement ("AndroidMinimumSupportedApiLevel");
 				writer.WriteAttributeString ("Condition", " '$(AndroidMinimumSupportedApiLevel)' == '' ");

build-tools/api-merge/merge-configuration.xml

@@ -20,7 +20,7 @@
     <File Path="api-29.xml.in" Level="29" />
     <File Path="api-30.xml.in" Level="30" />
     <File Path="api-31.xml.in" Level="31" />
-    <File Path="api-Sv2.xml.in" Level="Sv2" />
+    <File Path="api-32.xml.in" Level="32" />
   </Inputs>
   <Outputs>
     <File Path="android-19\mcw\api.xml" LastLevel="19" />
@@ -36,6 +36,6 @@
     <File Path="android-29\mcw\api.xml" LastLevel="29" />
     <File Path="android-30\mcw\api.xml" LastLevel="30" />
     <File Path="android-31\mcw\api.xml" LastLevel="31" />
-    <File Path="android-Sv2\mcw\api.xml" LastLevel="Sv2" />
+    <File Path="android-32\mcw\api.xml" LastLevel="32" />
   </Outputs>
 </Configuration>

build-tools/api-xml-adjuster/Makefile

@@ -17,7 +17,7 @@ API_XML_TOOL = $(BUILDBIN)/api-xml-adjuster.exe
 RUNTIME = mono --debug
 RUN_CLASS_PARSE = $(RUNTIME) $(CLASS_PARSE)
 RUN_API_XML_TOOL = $(RUNTIME) $(API_XML_TOOL)
-API_LEVELS = 10 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Sv2
+API_LEVELS = 10 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
 
 XML_OUTPUT_DIR = .
 

build-tools/create-packs/Directory.Build.targets

@@ -120,6 +120,8 @@
       <_NuGetSources Include="$(OutputPath.TrimEnd('\'))" />
       <_PreviewPacks Condition=" '$(AndroidLatestStableApiLevel)' != '$(AndroidLatestUnstableApiLevel)' " Include="$(XamarinAndroidSourcePath)bin\Build$(Configuration)\nuget-unsigned\Microsoft.Android.Ref.$(AndroidLatestUnstableApiLevel).*.nupkg" />
       <_InstallArguments Include="android-aot" />
+      <!-- NOTE: temporary if $(AndroidDefaultTargetDotnetApiLevel) is not 32 -->
+      <_InstallArguments Include="android-32" />
       <_InstallArguments Include="android-$(AndroidLatestUnstableApiLevel)" Condition=" '@(_PreviewPacks->Count())' != '0' " />
       <_InstallArguments Include="--skip-manifest-update" />
       <_InstallArguments Include="--verbosity diag" />

build-tools/create-packs/Microsoft.Android.Sdk.proj

@@ -120,18 +120,23 @@ WARNING:  DO NOT MODIFY this file unless you are knowledgeable about MSBuild and
   <PropertyGroup>
     <AndroidNETSdkVersion>$(AndroidPackVersionLong)</AndroidNETSdkVersion>
     <XamarinAndroidVersion>$(AndroidPackVersionLong)</XamarinAndroidVersion>
-    <_AndroidRuntimePackId Condition=" '%24(TargetPlatformVersion)' != '$(AndroidLatestUnstableApiLevel).0' ">$(AndroidLatestStableApiLevel)</_AndroidRuntimePackId>
-    <_AndroidRuntimePackId Condition=" '%24(TargetPlatformVersion)' == '$(AndroidLatestUnstableApiLevel).0' ">$(AndroidLatestUnstableApiLevel)</_AndroidRuntimePackId>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '%24(TargetPlatformVersion)' == '31.0' ">
+    <_AndroidRuntimePackId>31</_AndroidRuntimePackId>
+    <_AndroidRuntimePackVersion>31.0.101-preview.11.117</_AndroidRuntimePackVersion>
+  </PropertyGroup>
+  <PropertyGroup>
+    <_AndroidRuntimePackId Condition=" '%24(_AndroidRuntimePackId)' == '' ">$(AndroidLatestStableApiLevel)</_AndroidRuntimePackId>
+    <_AndroidRuntimePackVersion Condition=" '%24(_AndroidRuntimePackVersion)' == '' ">**FromWorkload**</_AndroidRuntimePackVersion>
   </PropertyGroup>
   <ItemGroup>
     <KnownFrameworkReference
         Include="Microsoft.Android"
         TargetFramework="$(_AndroidNETAppTargetFramework)"
         RuntimeFrameworkName="Microsoft.Android"
-        DefaultRuntimeFrameworkVersion="**FromWorkload**"
-        LatestRuntimeFrameworkVersion="**FromWorkload**"
+        LatestRuntimeFrameworkVersion="%24(_AndroidRuntimePackVersion)"
         TargetingPackName="Microsoft.Android.Ref.%24(_AndroidRuntimePackId)"
-        TargetingPackVersion="**FromWorkload**"
+        TargetingPackVersion="%24(_AndroidRuntimePackVersion)"
         RuntimePackNamePatterns="Microsoft.Android.Runtime.%24(_AndroidRuntimePackId).**RID**"
         RuntimePackRuntimeIdentifiers="@(_AndroidNETAppRuntimePackRids, '%3B')"
         Profile="Android"

build-tools/scripts/XABuildConfig.cs.in

@@ -10,6 +10,7 @@ namespace Xamarin.Android.Tools
 		public const string NDKRelease = "@NDK_RELEASE@";
 		public const int NDKMinimumApiAvailable = @NDK_MINIMUM_API_AVAILABLE@;
 		public const int AndroidLatestStableApiLevel = @ANDROID_LATEST_STABLE_API_LEVEL@;
+		public const int AndroidDefaultTargetDotnetApiLevel = @ANDROID_DEFAULT_TARGET_DOTNET_API_LEVEL@;
 		public static readonly Version NDKVersion = new Version (@NDK_VERSION_MAJOR@, @NDK_VERSION_MINOR@, @NDK_VERSION_MICRO@);
 
 		public static readonly Dictionary <string, int> ArchAPILevels = new Dictionary <string, int> (StringComparer.Ordinal) {