Android build error "failed to create JavaTypeInfo for class" :Xamarin

Question

Following this tutorial https://github.com/Vidyo/vidyo.io-connector-xamarin I downloaded the app without making any changes.

When I build the app, I get the following error:

Severity Code Description Project File Line Suppression State Error Failed to create JavaTypeInfo for class: Android.Support.V4.View.Accessibility.AccessibilityManagerCompat/ITouchExplorationStateChangeListenerImplementor due to MAX_PATH: System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Users\User\Desktop\vidyo.io-connector-xamarin-master\vidyo.io-connector-xamarin-master\VidyoConnector.Android\obj\Debug\90\android\src\mono\android\support\v4\view\accessibility\AccessibilityManagerCompat_TouchExplorationStateChangeListenerImplementor.java'.

at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) at System.IO.File.InternalDelete(String path, Boolean checkHost) at System.IO.File.Delete(String path) at Xamarin.Android.Tools.Files.CopyIfStreamChanged(Stream stream, String destination) at Xamarin.Android.Tasks.Generator.CreateJavaSources(TaskLoggingHelper log, IEnumerable`1 javaTypes, String outputPath, String applicationJavaClass, String androidSdkPlatform, Boolean useSharedRuntime, Boolean generateOnCreateOverrides, Boolean hasExportReference) VidyoConnector.Android

What is the possible fix for this?

Answer 1

That seems a problem with long path in windows. Put the project folder on the root, say C://yourproject. Then, clean your solution and build.

Answer 2

That seems a problem with long path in windows. Put the project folder on the root, say C://yourproject. Then, clean your solution and build.

Answer 3

@LawrenceWlt is correct but I would like to add some more information.

Is is due to Maximum Path Length Limitation

In the Windows API (with some exceptions discussed in the following paragraphs), the maximum length for a path is MAX_PATH, which is defined as 260 characters.

https://learn.microsoft.com/en-us/windows/win32/fileio/maximum-file-path-limitation

https://learn.microsoft.com/en-us/windows/win32/fileio/naming-a-file#maximum-path-length-limitation

If you are on Windows 10, Version 1607 or later you can Enable Long Paths:

The registry key Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem\LongPathsEnabled (Type: REG_DWORD) must exist and be set to 1.

The application manifest must also include the longPathAware element.

<application xmlns="urn:schemas-microsoft-com:asm.v3">
    <windowsSettings xmlns:ws2="http://schemas.microsoft.com/SMI/2016/WindowsSettings">
        <ws2:longPathAware>true</ws2:longPathAware>
    </windowsSettings>
</application>

https://learn.microsoft.com/en-us/windows/win32/fileio/maximum-file-path-limitation#enable-long-paths-in-windows-10-version-1607-and-later

I got a similar error from Experimental Mobile Blazor Bindings:

https://github.com/xamarin/MobileBlazorBindings

Failed to generate Java type for class: Android.Support.V4.View.Accessibility.AccessibilityManagerCompat/IAccessibilityStateChangeListenerImplementor due to MAX_PATH: System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Users\User\Desktop\MobileBlazorBindings-master\samples\MobileBlazorBindingsXaminals\MobileBlazorBindingsXaminals.Android\obj\Debug\90\android\src\mono\android\support\v4\view\accessibility\AccessibilityManagerCompat_AccessibilityStateChangeListenerImplementor.java'. at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) at System.IO.File.InternalDelete(String path, Boolean checkHost) at System.IO.File.Delete(String path) at Xamarin.Android.Tools.Files.CopyIfStreamChanged(Stream stream, String destination) at Xamarin.Android.Tasks.GenerateJavaStubs.CreateJavaSources(IEnumerable`1 javaTypes, TypeDefinitionCache cache) MobileBlazorBindingsXaminals.Android