Xamarin
A Microsoft open-source app platform for building Android and iOS apps with .NET and C#.
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Xamarin Android error during Release compilation. XALNK7001: System.NullReferenceException at MonoDroid.Tuner.AddKeepAlivesStep.AddKeepAlives
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Bado-dev
1
Reputation point
I've an Android app that compiles and runs in Debug mode.
When I set it to Release mode, I receive following error during compilation:
XALNK7001: System.NullReferenceException: Object reference not set to an instance of an object.
at MonoDroid.Tuner.AddKeepAlivesStep.AddKeepAlives(TypeDefinition type)
at MonoDroid.Tuner.AddKeepAlivesStep.AddKeepAlives(AssemblyDefinition assembly)
at MonoDroid.Tuner.AddKeepAlivesStep.ProcessAssembly(AssemblyDefinition assembly)
at Mono.Linker.Steps.BaseStep.Process(LinkContext context)
at Mono.Linker.Pipeline.ProcessStep(LinkContext context, IStep step)
at Mono.Linker.Pipeline.Process(LinkContext context)
at MonoDroid.Tuner.Linker.Process(LinkerOptions options, ILogger logger, LinkContext& context)
at Xamarin.Android.Tasks.LinkAssemblies.Execute(DirectoryAssemblyResolver res)
at Xamarin.Android.Tasks.LinkAssemblies.RunTask()
at Microsoft.Android.Build.Tasks.AndroidTask.Execute() in /Users/runner/work/1/s/xamarin-android/external/xamarin-android-tools/src/Microsoft.Android.Build.BaseTasks/AndroidTask.cs:line 17 Jokes.Droid
Can anyone help me? What could be the reason of this error?
Xamarin
Visual Studio
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Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 42,201 Reputation points Microsoft Vendor2022-09-26T06:49:45.767+00:00 I've an Android app that compiles and runs in Debug mode.
You could try the following methods.
- You could try to delete the
binandobjfolders in your project and try to build again. - The Link All Assemblies option links all assemblies, some code may be removed if there are no static references. Try to set the option to Link SDK Assemblies.
- Did you add some NuGet PackageReferences into your project? If so, please check whether those packages support your Android API version.
- You could try to delete the
-
Bado-dev 1 Reputation point
2022-09-29T20:33:32.41+00:00 Hi @Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) ,
I tried deleting bin and obj folders without success and I set "SDK Assemblies Only" option.
I added some nuget packages and are all up to date.
What can I try to do to solve the problem? -
Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 42,201 Reputation points Microsoft Vendor
2022-09-30T08:03:05.5+00:00 Can this issue be reproducible? If so, please provide reproduction steps.
For further investigation, could you please provide more detailed information, such as your Android API version and NuGet package list?
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