SpaceSpan

Xianyu Technology

Jul 31, 2019 · Mobile Development

Design and Implementation of a Powerful Rich Text Component in Flutter

To meet Xianyu’s e‑commerce product‑detail needs, the team built a custom RichText solution in Flutter that uses a zero‑width‑space placeholder (SpaceSpan) with adjustable letter‑spacing and font‑size to reserve space, then positions any widget via a Stack, enabling inline images, emojis and custom components without altering Flutter’s core rendering, though further work is needed for automatic sizing, text selection and editor integration.