Un-strip Compose Animation bindings (animation-android, animation-core-android)

[Copilot]

Xamarin.AndroidX.Compose.Animation.Android and Xamarin.AndroidX.Compose.Animation.Core.Android shipped empty — a blanket <remove-node path="/api/package" /> stripped every type in androidx.compose.animation.* and androidx.compose.animation.core.*, so nothing (Animatable, Transition, EnterTransition, animation specs, easing curves, …) was reachable from C#.

This replaces the blanket strip with surgical transforms plus the two compile dependencies that were actually missing, so the supporting type system binds.

animation-core-android — targeted remove-node transforms

Removes only nodes that genuinely can't bind due to binder limitations:

• vectorize methods — Kotlin's AnimationSpec hierarchy uses covariant generic return types (AnimationSpec→VectorizedAnimationSpec, FiniteAnimationSpec→VectorizedFiniteAnimationSpec, …), inexpressible in C# (CS0738/CS0535/CS9334).
• VectorizedAnimationSpec.isInfinite — a Kotlin default interface property mis-marked abstract by class-parse, so concrete Vectorized* classes failed to implement it.
• TransitionState.getCurrentState/getTargetState — generic erasure yields un-overridable abstract Raw*State members on the base (CS0534).
• Colliding DecayAnimation ctor — two constructors whose generic params (T / AnimationVector) both erase to Object (CS0111).

Internal packages removed

The internal Kotlin packages androidx.compose.animation.core.internal and androidx.compose.animation.internal only exposed implementation-detail facade helpers (JvmDefaultWithCompatibility_jvmAndAndroidKt, PlatformOptimizedCancellationException*), which are not useful public API. Both packages are now removed via remove-node transforms, and the corresponding AndroidX.Compose.Animation.Core.Internal / AndroidX.Compose.Animation.Internal namespaces were dropped from published-namespaces.txt and PublicAPI.Unshipped.txt. The public @InternalAnimationApi opt-in annotation lives in the core package (not core.internal) and is preserved.

Dependency additions (preserve API instead of stripping it)

Two members referenced types only reachable as second-level transitive deps, unavailable at compile time. Added via extraDependencies rather than deleting the members:

• animation-core-android → kotlinx-coroutines-core-jvm (so DeferredTargetAnimation.updateTarget(CoroutineScope) binds).
• animation-android → ui-unit-android (so SharedTransitionScope : Density and SplineBased* bind).

Packaging / metadata

• nugetVersion bumped 1.11.2 → 1.11.2.1 for both packages.
• New namespaces added to published-namespaces.txt; docs/artifact-list-with-versions.md updated.
• Regenerated PublicAPI.Unshipped.txt (core: 614 entries, animation: 227).

Known limitation

Most user-facing @Composables (AnimatedVisibility, Crossfade, …) remain stripped because their @JvmInline value class parameters block binding pending dotnet/java-interop#1440; they should reappear once it lands. The supporting types (Transition, Animatable, EnterTransition/ExitTransition, spec/easing types) and the *Kt container classes now bind regardless.

[jonathanpeppers]

@copilot should we remove the *.Internal package/namespace? If so make sure to update namespaces file

[Copilot]

@copilot should we remove the *.Internal package/namespace? If so make sure to update namespaces file

Yes — those packages (androidx.compose.animation.internal, androidx.compose.animation.core.internal) only contain internal Kotlin facade helpers (JvmDefaultWithCompatibility_jvmAndAndroidKt, PlatformOptimizedCancellationException*), so they're not useful public API. In e1c4717 I added remove-node transforms for both packages and dropped AndroidX.Compose.Animation.Internal / AndroidX.Compose.Animation.Core.Internal from published-namespaces.txt (and the matching PublicAPI.Unshipped.txt entries). The public @InternalAnimationApi opt-in annotation lives in the core package, not the core.internal package, so it's kept.