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Example messages
warning XA0149: Ignoring legacy Xamarin.Android environment file '__AndroidEnvironment__abc123' from NuGet package 'Some.Old.Package' version '1.2.3' in assembly '/path/to/Some.Old.Package.dll'. Environment files from Xamarin.Android class libraries are not supported in .NET for Android. Use a newer version of this NuGet package or notify the library author.
warning XA0149: Ignoring legacy Xamarin.Android environment file '__AndroidEnvironment__abc123' in assembly '/path/to/SomeLibrary.dll'. Environment files from Xamarin.Android class libraries are not supported in .NET for Android. Use a newer version of this assembly or notify the library author.
Issue
A referenced assembly (typically from an older Xamarin.Android class
library or a NuGet package targeting MonoAndroid) contains an embedded
__AndroidEnvironment__* resource. .NET for Android does not consume
environment files contributed by class libraries via this legacy
mechanism, so the file is being ignored.
This is closely related to the
NU1703
warning that NuGet emits for packages still targeting the deprecated
MonoAndroid framework.
Solution
Update to a version of the NuGet package or library that targets
net-android (.NET for Android). If you maintain the library, rebuild
it as a .NET for Android class library so that any environment variables
are produced in the supported .net/env/ AAR layout.
If the environment variables are required by your application, declare
them directly in your app project using an @(AndroidEnvironment)
item:
<ItemGroup>
<AndroidEnvironment Include="env.txt" />
</ItemGroup>