CALayer

Tencent Music Tech Team

Oct 4, 2021 · Mobile Development

Tree Structures in iOS, Android, Web, and Flutter: Views, Layers, and Rendering

The article compares the view‑and‑layer tree architectures of iOS, Android, Web, and Flutter, explaining iOS’s UIView/CALayer hierarchy, coordinate system, and model‑presentation‑render trees, while detailing Flutter’s widget, element, render‑object, and layer trees, and highlighting their shared parse‑layout‑render pipeline and differing animation approaches.