| # Examples of Flutter's layered architecture |
| |
| This directory contains several self-contained examples that illustrate |
| Flutter's layered architecture. |
| |
| * [*raw/*](raw/) These examples show how to program against the lowest layer of |
| the system. They manually receive input packets and construct composited |
| scenes. |
| |
| * [*rendering/*](rendering/) These examples use Flutter's render tree to |
| structure your app using a retained tree of visual objects. These objects |
| coordinate to determine their size and position on screen and to handle |
| events. |
| |
| * [*widgets/*](widgets/) These examples use Flutter's widgets to build more |
| elaborate apps using a reactive framework. |
| |
| * [*services/*](services/) These examples use services available in Flutter to |
| interact with the host platform. |
| |
| To run each example, specify the demo file on the `flutter run` |
| command line, for example: |
| |
| ```sh |
| flutter run raw/spinning_square.dart |
| flutter run rendering/spinning_square.dart |
| flutter run widgets/spinning_square.dart |
| ``` |
