README.md
1# Examples of Flutter's layered architecture
2
3This directory contains a number of self-contained examples that illustrate
4Flutter's layered architecture.
5
6 * [*raw/*](raw/) These examples show how to program against the lowest layer of
7 the system. They manually receive input packets and construct composited
8 scenes.
9
10 * [*rendering/*](rendering/) These examples use Flutter's render tree to
11 structure your app using a retained tree of visual objects. These objects
12 coordinate to determine their size and position on screen and to handle
13 events.
14
15 * [*widgets/*](widgets/) These examples use Flutter's widgets to build more
16 elaborate apps using a reactive framework.
17
18 * [*services/*](services/) These examples use services available in Flutter to
19 interact with the host platform.
20
21To run each example, specify the demo file on the `flutter run`
22command line, for example:
23
24```
25flutter run raw/spinning_square.dart
26flutter run rendering/spinning_square.dart
27flutter run widgets/spinning_square.dart
28```
29