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Shadow Gadgets

A utility library for Android with various tools to help fix the elevation shadow artifacts visible on Views with transparent or translucent backgrounds.

General

• Jetpack Compose

  The modern UI toolkit makes accomplishing the core fix relatively simple, and is so new that it's arguably of little benefit to attempt to devise a one-size-fits-all, externally-applicable solution in it to add to the library. For now, the linked gist has several examples that are pretty much usable as-is.

• Layout Inflation Helpers

  These serve as another means to apply the shadow properties through layout XML and inflation, but they are mainly geared toward doing so in existing setups with minimal changes.

API Reference

• Clipped Shadows

  The three core library properties, related enum classes, etc.

• ViewGroups

  The ClippedShadowsViewGroup interface, and common XML attributes.

• Recycling ViewGroups

  The custom implementations of RecyclerView and platform AdapterView subclasses.

• Regular ViewGroups

  The various non-recycling ones, including customizations of both platform and Jetpack classes.

• ShadowDrawable

  The ShadowDrawable class.

• Layout Inflation

  The three inflation helpers for the various configurations, the TagMatcher interface and related functions, etc.