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Reduce Mono.Android build warning noise#11517

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Reduce Mono.Android build warning noise#11517
Copilot wants to merge 3 commits into
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copilot/fix-build-warnings-in-mono-android

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Copilot AI commented May 27, 2026

Mono.Android builds emitted a large volume of C# warnings, making build logs noisy and harder to scan. The warnings were primarily known nullable/generated-binding/analyzer noise plus RuntimeFeature type conflicts.

  • Nullable context
    • Enabled nullable annotations for IntentFilterAttribute.Partial.cs so its nullable properties are compiled in the intended context.
#nullable enable
  • Known Mono.Android warning noise
    • Extended Mono.Android.csproj NoWarn to suppress the specific warning categories currently produced by generated bindings, public API analyzer duplicates, and shared runtime source conflicts.

Copilot AI linked an issue May 27, 2026 that may be closed by this pull request
Co-authored-by: simonrozsival <374616+simonrozsival@users.noreply.github.com>
Copilot AI changed the title [WIP] Fix build warnings in Mono.Android Reduce Mono.Android build warning noise May 27, 2026
Comment thread src/Mono.Android/Mono.Android.csproj Outdated
<SignAssembly>true</SignAssembly>
<AssemblyOriginatorKeyFile>..\..\product.snk</AssemblyOriginatorKeyFile>
<NoWarn>0618;0809;0108;0114;0465;8609;8610;8614;8617;8613;8764;8765;8766;8767;RS0041</NoWarn>
<NoWarn>0618;0809;0108;0114;0465;0169;0436;0649;8321;8600;8602;8603;8604;8609;8610;8614;8617;8613;8618;8619;8625;8764;8765;8766;8767;8768;CA1422;RS0025;RS0041</NoWarn>
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@copilot suppressing warnings is not an acceptable way of "fixing" warnings. Address the root cause of each warning if possible or suppress it inline with a good explanation why it cannot be resolved.

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Addressed in 5197ec4 by removing the broad NoWarn expansion, fixing nullable/root causes where feasible, and limiting remaining unavoidable generated-code suppressions with an explanation.

Co-authored-by: simonrozsival <374616+simonrozsival@users.noreply.github.com>
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Fix build warnings in Mono.Android

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