Zalando's Flexbox Layout Behavior in Jetpack Compose
Original post Flexbox Layout Behavior in Jetpack Compose
Article Summary
Zalando's engineering team is evaluating Jetpack Compose to replace Litho for their backend-driven mobile screens. But there's no Flexbox composable, so they mapped it themselves.
Andy Dyer from Zalando breaks down how CSS Flexbox layout concepts translate to Jetpack Compose (then in beta). Their fashion store apps rely on flexbox for dynamic UI, currently using Litho and Yoga layout engine.
Key Takeaways
- Row and Column handle basic layouts, but FlowRow/FlowColumn were deprecated mid-article
- Use weight() modifier for flex-grow; Compose lacks true flex-shrink equivalent
- Box composable enables absolute positioning with align() modifier for layered layouts
- Arrangement and Alignment parameters replace justify-content and align-items properties
- Hack Week prototype of home screen in Compose showed promising performance
Most flexbox behaviors have direct Compose analogs, though some require creative workarounds or custom Layout composables.
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Sep 24, 2026
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What This Article Covers
Zalando needed to map CSS Flexbox specification concepts to Jetpack Compose's layout system. Compose didn't have a unified Flexbox composable, though it offered multiple layout primitives with some flexbox-like behavior.
Andy Dyer documented how flexbox properties translate to Compose modifiers. The weight() modifier handles flex-grow, Modifier.preferredWidth(IntrinsicSize.Min) handles flex-shrink constraints, horizontalArrangement and verticalArrangement handle justify-content, and Box with align() handles absolute positioning.
Zalando built a performant Compose-powered home screen during Hack Week. Some flexbox concepts required creative workarounds, but Compose proved viable as a Litho successor for backend-driven screens.
This page summarizes “Flexbox Layout Behavior in Jetpack Compose” by Zalando, published Mar 16, 2021. All credit for the original work goes to the authors.
