JD Retail Technology

Jun 8, 2026 · Mobile Development

Accelerating Taro Native Static Layout Rendering on HarmonyOS

The article analyzes severe scroll jank on low‑end HarmonyOS devices caused by Taro Native's heavyweight card page, identifies main‑thread overload in layout phases 1, 4 and 5, proposes static node‑tree layout with custom measurement interception and font‑measurement caching, and reports a frame‑rate boost from 43 fps to 57 fps (~32.5% improvement).