Is Xamarin Forms .NET Standard 2.0 Already Supported?

fitlg.mobile
Mon, 20 Nov 2017 04:06:25 +0000
Question & Answer

We are trying to convert our PCL xamarin forms project to use .NET Standard 2.0. We are encountering an error during build in bitrise. Seems to be related to xamarin-archive step. Here is the log.

+------------------------------------------------------------------------------+

| (7) xamarin-archive@1.5.0                                                    |
+------------------------------------------------------------------------------+
| id: xamarin-archive                                                          |
| version: 1.5.0                                                               |
| collection: https://github.com/bitrise-io/bitrise-steplib.git                |
| toolkit: go                                                                  |
| time: 2017-11-19T16:34:26-08:00                                              |
+------------------------------------------------------------------------------+
|                                                                              |
INFO[16:34:26]  * [OK] Step dependency (go) installed, available.
Configs:
- XamarinSolution: MyApp.sln
- XamarinConfiguration: Release
- XamarinPlatform: Any CPU
- ProjectTypeWhitelist: android,ios,macos,tvos
Experimental Configs:
- AndroidCustomOptions:
- IOSCustomOptions:
- TvOSCustomOptions:
- MacOSCustomOptions:
- BuildTool: msbuild
Other Configs:
- DeployDir: /Users/vagrant/deploy
Building all projects in solution: MyApp.sln
Building project: MyApp.Android
$ "/Library/Frameworks/Mono.framework/Versions/Current/Commands/msbuild" "/Users/vagrant/git/MyApp/MyApp.Android/MyApp.Android.csproj" "/target:PackageForAndroid" "/p:SolutionDir=/Users/vagrant/git" "/p:Configuration=Release"
Microsoft (R) Build Engine version 15.4.0.0 (master/f296e67b Wed Oct 18 09:47:05 EDT 2017) for Mono
Copyright (C) Microsoft Corporation. All rights reserved.
Build started 11/19/2017 4:34:30 PM.
Project "/Users/vagrant/git/MyApp/MyApp.Android/MyApp.Android.csproj" on node 1 (PackageForAndroid target(s)).
_CreatePropertiesCache:
  Creating directory "obj/Release/".
_SetLatestTargetFrameworkVersion:
   Found Android SDK. API levels: 10, 15, 17, 19, 20, 21, 22, 23, 24, 25, 26
  Found Java SDK version 1.8.0.
_ValidateAndroidPackageProperties:
    PackageName: com.flg.kubofit
/Users/vagrant/git/MyApp/MyApp.Android/Properties/AndroidManifest.xml : warning XA4211: AndroidManifest.xml //uses-sdk/@android:targetSdkVersion '23' is less than $(TargetFrameworkVersion) 'v8.0'. Using API-26 for ACW compilation. [/Users/vagrant/git/MyApp/MyApp.Android/MyApp.Android.csproj]
ProcessGoogleServicesJsonChecks:
  No GoogleServicesJson file specified.
PrepareForBuild:
  Creating directory "bin/Release/".
Project "/Users/vagrant/git/MyApp/MyApp.Android/MyApp.Android.csproj" (1) is building "/Users/vagrant/git/MyApp/MyApp/MyApp.csproj" (2:2) on node 1 (default targets).
PrepareForBuild:
  Creating directory "bin/Release/netstandard2.0/".
  Creating directory "obj/Release/netstandard2.0/".
/usr/local/share/dotnet/sdk/2.0.0/Sdks/Microsoft.NET.Sdk/build/Microsoft.PackageDependencyResolution.targets(323,5): error : Assets file '/Users/vagrant/git/MyApp/MyApp/obj/project.assets.json' not found. Run a NuGet package restore to generate this file. [/Users/vagrant/git/MyApp/MyApp/MyApp.csproj]
  Build continuing because "ContinueOnError" on the task "ReportAssetsLogMessages" is set to "ErrorAndContinue".
/usr/local/share/dotnet/sdk/2.0.0/Sdks/Microsoft.NET.Sdk/build/Microsoft.PackageDependencyResolution.targets(165,5): error : Assets file '/Users/vagrant/git/MyApp/MyApp/obj/project.assets.json' not found. Run a NuGet package restore to generate this file. [/Users/vagrant/git/MyApp/MyApp/MyApp.csproj]
Done Building Project "/Users/vagrant/git/MyApp/MyApp/MyApp.csproj" (default targets) -- FAILED.
Done Building Project "/Users/vagrant/git/MyApp/MyApp.Android/MyApp.Android.csproj" (PackageForAndroid target(s)) -- FAILED.
Build FAILED.
"/Users/vagrant/git/MyApp/MyApp.Android/MyApp.Android.csproj" (PackageForAndroid target) (1) ->
(_ValidateAndroidPackageProperties target) ->
  /Users/vagrant/git/MyApp/MyApp.Android/Properties/AndroidManifest.xml : warning XA4211: AndroidManifest.xml //uses-sdk/@android:targetSdkVersion '23' is less than $(TargetFrameworkVersion) 'v8.0'. Using API-26 for ACW compilation. [/Users/vagrant/git/MyApp/MyApp.Android/MyApp.Android.csproj]
"/Users/vagrant/git/MyApp/MyApp.Android/MyApp.Android.csproj" (PackageForAndroid target) (1) ->
"/Users/vagrant/git/MyApp/MyApp/MyApp.csproj" (default target) (2:2) ->
(ReportAssetsLogMessages target) ->
  /usr/local/share/dotnet/sdk/2.0.0/Sdks/Microsoft.NET.Sdk/build/Microsoft.PackageDependencyResolution.targets(323,5): error : Assets file '/Users/vagrant/git/MyApp/MyApp/obj/project.assets.json' not found. Run a NuGet package restore to generate this file. [/Users/vagrant/git/MyApp/MyApp/MyApp.csproj]
"/Users/vagrant/git/MyApp/MyApp.Android/MyApp.Android.csproj" (PackageForAndroid target) (1) ->
"/Users/vagrant/git/MyApp/MyApp/MyApp.csproj" (default target) (2:2) ->
(RunResolvePackageDependencies target) ->
  /usr/local/share/dotnet/sdk/2.0.0/Sdks/Microsoft.NET.Sdk/build/Microsoft.PackageDependencyResolution.targets(165,5): error : Assets file '/Users/vagrant/git/MyApp/MyApp/obj/project.assets.json' not found. Run a NuGet package restore to generate this file. [/Users/vagrant/git/MyApp/MyApp/MyApp.csproj]
    1 Warning(s)
    2 Error(s)
Time Elapsed 00:00:02.50
Build failed, error: exit status 1
|                                                                              |
+---+---------------------------------------------------------------+----------+
| x | xamarin-archive@1.5.0 (exit code: 1)                          | 7.01 sec |
+---+---------------------------------------------------------------+----------+
| Issue tracker: ...://github.com/bitrise-steplib/steps-xamarin-archive/issues |
| Source: https://github.com/bitrise-steplib/steps-xamarin-archive             |
+---+---------------------------------------------------------------+----------+

Thank you.

7 posts - 3 participants