optimizing-lazy-layouts

What problem does it solve?

Lazy layouts in Jetpack Compose can suffer from scroll jank, lost item state across inserts/removals/reorders, and animations that don't run on inserts/removals when keys or contentType aren't used correctly.

Core Features & Use Cases

• Stable item keys to preserve composition state during insertions, removals, and reorders.
• contentType for heterogeneous feeds (cards, headers, ads, grids) to reuse the correct item types.
• Validation of item composable stability and hoisting heavy allocations outside the item lambda.
• Guidance for applying Modifier.animateItem() to maintain visual continuity during mutations.

Quick Start

Audit your Lazy lists to add stable keys, specify contentType for heterogeneous items, hoist heavy allocations outside item lambdas, and validate recomposition behavior with tooling.