title: "Link Assemblies" task failed unexpectedly issue while App build in Release Mode Xamarin Android
body: <p>Getting the following issue while trying to build App Release Mode in Xamarin Android.
  Why is it appearing and how can it be resolved?</p>
  
  <blockquote>
    <p>Severity  Code    Description Project File    Line    Source  Suppression State Error     </p>
    
    <p>The "Link Assemblies" task failed unexpectedly.</p>
    
    <p>Xamarin.Android.XamarinAndroidException: error XA2006: Reference to
    metadata item 'System.Void
    Android.Widget.TextView::SetTextAppearance(System.Int32)' (defined in
    'Xamarin.Forms.Platform.Android, Version=2.0.0.0, Culture=neutral,
    PublicKeyToken=null') from 'Xamarin.Forms.Platform.Android,
    Version=2.0.0.0, Culture=neutral, PublicKeyToken=null' could not be
    resolved. ---> Mono.Cecil.ResolutionException: Failed to resolve
    System.Void Android.Widget.TextView::SetTextAppearance(System.Int32) </p>
    
    <p>at Mono.Linker.Steps.MarkStep.MarkMethod(MethodReference reference)<br>
    at Mono.Linker.Steps.MarkStep.MarkInstruction(Instruction instruction)
    at Mono.Linker.Steps.MarkStep.MarkMethodBody(MethodBody body)<br>
    at Mono.Linker.Steps.MarkStep.ProcessMethod(MethodDefinition method)<br>
    at Mono.Linker.Steps.MarkStep.ProcessQueue()<br>
      at Mono.Linker.Steps.MarkStep.Process()<br>
    at Mono.Linker.Steps.MarkStep.Process(LinkContext context)<br>
      at Mono.Linker.Pipeline.Process(LinkContext context)<br>
      at MonoDroid.Tuner.Linker.Process(LinkerOptions options, LinkContext&amp;
    context)<br>
      at Xamarin.Android.Tasks.LinkAssemblies.Execute()    </p>
    
    <p>---End of inner exception stack trace --- </p>
    
    <p>at Xamarin.Android.Diagnostic.Error(Int32 code, Exception innerException,
    String message, Object[] args)<br>
      at Xamarin.Android.Tasks.LinkAssemblies.Execute()<br>
      at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
    at
    Microsoft.Build.BackEnd.TaskBuilder.d__26.MoveNext() MyApp.Droid         Build</p>
  </blockquote>
  
  <p><a href="https://i.stack.imgur.com/IE3Gn.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/IE3Gn.png" alt="enter image description here"></a></p>