Uploaded April 2025 | Updated September 2026, 1 week ago

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Dive into Flutter's architecture by exploring its three primary trees: Widget, Element, and RenderObject. Discover how widgets provide the declarative API for Flutter developers and see how Elements glue widgets to the rendering layer. Follow along as we also cover the role of RenderObjects in translating widget values into painting calls.

Chapters:
0:00 - Intro
0:35 - What is a widget?
1:30 - Stateless vs Stateful widgets
2:48 - The Element tree
5:43 - The Render tree

Resources:
How to build a RenderObject → https://goo.gle/4cURVXp
Lifecycle of a Widget → https://goo.gle/Widget-Lifecycle
Lifecycle of a RenderObject → https://goo.gle/RenderObject-Lifecycle

Watch more Decoding Flutter → https://goo.gle/DecodingFlutter
Subscribe to Flutter → http://goo.gle/FlutterYT

#DecodingFlutter #Flutter

Speaker: Craig Labenz
Products Mentioned: Flutter,